[ 8654.278742][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8654.279337][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8654.279337][   T10]      dst_init+0x84/0x4a0
[ 8654.279337][   T10]      dst_alloc+0x97/0x150
[ 8654.279337][   T10]      ip6_dst_alloc+0x23/0x90
[ 8654.279337][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8654.279337][   T10]      ip6_pol_route+0x56f/0x840
[ 8654.279337][   T10]      fib6_rule_lookup+0x334/0x630
[ 8654.279337][   T10]      ip6_route_output_flags+0x259/0x480
[ 8654.279337][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8654.279337][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8654.279337][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8654.279337][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8654.279337][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.279337][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.279337][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.279337][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.279337][   T10] 
[ 8654.281832][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.281832][   T10]      dst_init+0x84/0x4a0
[ 8654.281832][   T10]      dst_alloc+0x97/0x150
[ 8654.281832][   T10]      ip6_dst_alloc+0x23/0x90
[ 8654.281832][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8654.281832][   T10]      ip6_pol_route+0x56f/0x840
[ 8654.281832][   T10]      fib6_rule_lookup+0x334/0x630
[ 8654.281832][   T10]      ip6_route_output_flags+0x259/0x480
[ 8654.281832][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8654.281832][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8654.281832][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8654.281832][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8654.281832][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8654.281832][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.281832][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.281832][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.281832][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.281832][   T10] 
[ 8654.284001][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.284001][   T10]      dst_init+0x84/0x4a0
[ 8654.284001][   T10]      dst_alloc+0x97/0x150
[ 8654.284001][   T10]      ip6_dst_alloc+0x23/0x90
[ 8654.284001][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8654.284001][   T10]      ip6_pol_route+0x56f/0x840
[ 8654.284001][   T10]      fib6_rule_lookup+0x334/0x630
[ 8654.284001][   T10]      ip6_route_output_flags+0x259/0x480
[ 8654.284001][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8654.284001][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8654.284001][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8654.284001][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8654.284001][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8654.284001][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.284001][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.284001][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.284001][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.284001][   T10] 
[ 8654.286147][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.286147][   T10]      netdev_get_by_index+0x5e/0x80
[ 8654.286147][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8654.286147][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8654.286147][   T10]      ip6_route_add+0x1c/0x140
[ 8654.286147][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8654.286147][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8654.286147][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8654.286147][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.286147][   T10]      netlink_rcv_skb+0x130/0x360
[ 8654.286147][   T10]      netlink_unicast+0x449/0x710
[ 8654.286147][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8654.286147][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.286147][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.286147][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.286147][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.286147][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.286147][   T10] 
[ 8654.288308][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.288308][   T10]      netdev_get_by_index+0x5e/0x80
[ 8654.288308][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8654.288308][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8654.288308][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8654.288308][   T10]      ipv6_add_addr+0x411/0x2000
[ 8654.288308][   T10]      inet6_addr_add+0x30e/0xa40
[ 8654.288308][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8654.288308][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.288308][   T10]      netlink_rcv_skb+0x130/0x360
[ 8654.288308][   T10]      netlink_unicast+0x449/0x710
[ 8654.288308][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8654.288308][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.288308][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.288308][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.288308][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.288308][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.288308][   T10] 
[ 8654.290456][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.290456][   T10]      netdev_get_by_index+0x5e/0x80
[ 8654.290456][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8654.290456][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8654.290456][   T10]      ip6_route_add+0x1c/0x140
[ 8654.290456][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8654.290456][   T10]      addrconf_add_dev+0xe2/0x170
[ 8654.290456][   T10]      inet6_addr_add+0x12f/0xa40
[ 8654.290456][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8654.290456][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.290456][   T10]      netlink_rcv_skb+0x130/0x360
[ 8654.290456][   T10]      netlink_unicast+0x449/0x710
[ 8654.290456][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8654.290456][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.290456][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.290456][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.290456][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.290456][   T10] 
[ 8654.292441][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.292441][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8654.292441][   T10]      ipv6_find_idev+0x102/0x170
[ 8654.292441][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8654.292441][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.292441][   T10]      netlink_rcv_skb+0x130/0x360
[ 8654.292441][   T10]      netlink_unicast+0x449/0x710
[ 8654.292441][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8654.292441][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.292441][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.292441][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.292441][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.292441][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.292441][   T10] 
[ 8654.294033][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8654.294033][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8654.294033][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8654.294033][   T10]      ipv6_find_idev+0x102/0x170
[ 8654.294033][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8654.294033][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.294033][   T10]      netlink_rcv_skb+0x130/0x360
[ 8654.294033][   T10]      netlink_unicast+0x449/0x710
[ 8654.294033][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8654.294033][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.294033][   T10]      ___sys_sendmsg+0xee/0x170
[ 8654.294033][   T10]      __sys_sendmsg+0xcd/0x170
[ 8654.294033][   T10]      do_syscall_64+0xc6/0x1e0
[ 8654.294033][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.294033][   T10] 
[ 8654.550743][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8654.551124][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8654.551124][T12167]      netdev_get_by_index+0x5e/0x80
[ 8654.551124][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8654.551124][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8654.551124][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8654.551124][T12167]      ipv6_add_addr+0x411/0x2000
[ 8654.551124][T12167]      inet6_addr_add+0x30e/0xa40
[ 8654.551124][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8654.551124][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.551124][T12167]      netlink_rcv_skb+0x130/0x360
[ 8654.551124][T12167]      netlink_unicast+0x449/0x710
[ 8654.551124][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8654.551124][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.551124][T12167]      ___sys_sendmsg+0xee/0x170
[ 8654.551124][T12167]      __sys_sendmsg+0xcd/0x170
[ 8654.551124][T12167]      do_syscall_64+0xc6/0x1e0
[ 8654.551124][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.551124][T12167] 
[ 8654.553400][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8654.553400][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8654.553400][T12167]      ipv6_find_idev+0x102/0x170
[ 8654.553400][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8654.553400][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.553400][T12167]      netlink_rcv_skb+0x130/0x360
[ 8654.553400][T12167]      netlink_unicast+0x449/0x710
[ 8654.553400][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8654.553400][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.553400][T12167]      ___sys_sendmsg+0xee/0x170
[ 8654.553400][T12167]      __sys_sendmsg+0xcd/0x170
[ 8654.553400][T12167]      do_syscall_64+0xc6/0x1e0
[ 8654.553400][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.553400][T12167] 
[ 8654.555210][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8654.555210][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8654.555210][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8654.555210][T12167]      ipv6_find_idev+0x102/0x170
[ 8654.555210][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8654.555210][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8654.555210][T12167]      netlink_rcv_skb+0x130/0x360
[ 8654.555210][T12167]      netlink_unicast+0x449/0x710
[ 8654.555210][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8654.555210][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8654.555210][T12167]      ___sys_sendmsg+0xee/0x170
[ 8654.555210][T12167]      __sys_sendmsg+0xcd/0x170
[ 8654.555210][T12167]      do_syscall_64+0xc6/0x1e0
[ 8654.555210][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8654.555210][T12167] 
[ 8664.406894][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8664.407318][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8664.407318][   T10]      dst_init+0x84/0x4a0
[ 8664.407318][   T10]      dst_alloc+0x97/0x150
[ 8664.407318][   T10]      ip6_dst_alloc+0x23/0x90
[ 8664.407318][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8664.407318][   T10]      ip6_pol_route+0x56f/0x840
[ 8664.407318][   T10]      fib6_rule_lookup+0x334/0x630
[ 8664.407318][   T10]      ip6_route_output_flags+0x259/0x480
[ 8664.407318][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8664.407318][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8664.407318][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8664.407318][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8664.407318][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.407318][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.407318][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.407318][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.407318][   T10] 
[ 8664.409270][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.409270][   T10]      dst_init+0x84/0x4a0
[ 8664.409270][   T10]      dst_alloc+0x97/0x150
[ 8664.409270][   T10]      ip6_dst_alloc+0x23/0x90
[ 8664.409270][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8664.409270][   T10]      ip6_pol_route+0x56f/0x840
[ 8664.409270][   T10]      fib6_rule_lookup+0x334/0x630
[ 8664.409270][   T10]      ip6_route_output_flags+0x259/0x480
[ 8664.409270][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8664.409270][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8664.409270][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8664.409270][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8664.409270][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8664.409270][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.409270][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.409270][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.409270][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.409270][   T10] 
[ 8664.411323][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.411323][   T10]      dst_init+0x84/0x4a0
[ 8664.411323][   T10]      dst_alloc+0x97/0x150
[ 8664.411323][   T10]      ip6_dst_alloc+0x23/0x90
[ 8664.411323][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8664.411323][   T10]      ip6_pol_route+0x56f/0x840
[ 8664.411323][   T10]      fib6_rule_lookup+0x334/0x630
[ 8664.411323][   T10]      ip6_route_output_flags+0x259/0x480
[ 8664.411323][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8664.411323][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8664.411323][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8664.411323][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8664.411323][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8664.411323][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.411323][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.411323][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.411323][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.411323][   T10] 
[ 8664.413421][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.413421][   T10]      netdev_get_by_index+0x5e/0x80
[ 8664.413421][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8664.413421][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8664.413421][   T10]      ip6_route_add+0x1c/0x140
[ 8664.413421][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8664.413421][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8664.413421][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8664.413421][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.413421][   T10]      netlink_rcv_skb+0x130/0x360
[ 8664.413421][   T10]      netlink_unicast+0x449/0x710
[ 8664.413421][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8664.413421][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.413421][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.413421][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.413421][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.413421][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.413421][   T10] 
[ 8664.415549][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.415549][   T10]      netdev_get_by_index+0x5e/0x80
[ 8664.415549][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8664.415549][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8664.415549][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8664.415549][   T10]      ipv6_add_addr+0x411/0x2000
[ 8664.415549][   T10]      inet6_addr_add+0x30e/0xa40
[ 8664.415549][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8664.415549][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.415549][   T10]      netlink_rcv_skb+0x130/0x360
[ 8664.415549][   T10]      netlink_unicast+0x449/0x710
[ 8664.415549][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8664.415549][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.415549][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.415549][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.415549][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.415549][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.415549][   T10] 
[ 8664.417696][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.417696][   T10]      netdev_get_by_index+0x5e/0x80
[ 8664.417696][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8664.417696][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8664.417696][   T10]      ip6_route_add+0x1c/0x140
[ 8664.417696][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8664.417696][   T10]      addrconf_add_dev+0xe2/0x170
[ 8664.417696][   T10]      inet6_addr_add+0x12f/0xa40
[ 8664.417696][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8664.417696][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.417696][   T10]      netlink_rcv_skb+0x130/0x360
[ 8664.417696][   T10]      netlink_unicast+0x449/0x710
[ 8664.417696][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8664.417696][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.417696][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.417696][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.417696][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.417696][   T10] 
[ 8664.419793][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.419793][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8664.419793][   T10]      ipv6_find_idev+0x102/0x170
[ 8664.419793][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8664.419793][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.419793][   T10]      netlink_rcv_skb+0x130/0x360
[ 8664.419793][   T10]      netlink_unicast+0x449/0x710
[ 8664.419793][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8664.419793][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.419793][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.419793][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.419793][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.419793][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.419793][   T10] 
[ 8664.421371][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8664.421371][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8664.421371][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8664.421371][   T10]      ipv6_find_idev+0x102/0x170
[ 8664.421371][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8664.421371][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.421371][   T10]      netlink_rcv_skb+0x130/0x360
[ 8664.421371][   T10]      netlink_unicast+0x449/0x710
[ 8664.421371][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8664.421371][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.421371][   T10]      ___sys_sendmsg+0xee/0x170
[ 8664.421371][   T10]      __sys_sendmsg+0xcd/0x170
[ 8664.421371][   T10]      do_syscall_64+0xc6/0x1e0
[ 8664.421371][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.421371][   T10] 
[ 8664.695710][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8664.696093][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8664.696093][T12167]      netdev_get_by_index+0x5e/0x80
[ 8664.696093][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8664.696093][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8664.696093][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8664.696093][T12167]      ipv6_add_addr+0x411/0x2000
[ 8664.696093][T12167]      inet6_addr_add+0x30e/0xa40
[ 8664.696093][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8664.696093][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.696093][T12167]      netlink_rcv_skb+0x130/0x360
[ 8664.696093][T12167]      netlink_unicast+0x449/0x710
[ 8664.696093][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8664.696093][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.696093][T12167]      ___sys_sendmsg+0xee/0x170
[ 8664.696093][T12167]      __sys_sendmsg+0xcd/0x170
[ 8664.696093][T12167]      do_syscall_64+0xc6/0x1e0
[ 8664.696093][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.696093][T12167] 
[ 8664.698362][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8664.698362][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8664.698362][T12167]      ipv6_find_idev+0x102/0x170
[ 8664.698362][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8664.698362][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.698362][T12167]      netlink_rcv_skb+0x130/0x360
[ 8664.698362][T12167]      netlink_unicast+0x449/0x710
[ 8664.698362][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8664.698362][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.698362][T12167]      ___sys_sendmsg+0xee/0x170
[ 8664.698362][T12167]      __sys_sendmsg+0xcd/0x170
[ 8664.698362][T12167]      do_syscall_64+0xc6/0x1e0
[ 8664.698362][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.698362][T12167] 
[ 8664.700097][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8664.700097][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8664.700097][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8664.700097][T12167]      ipv6_find_idev+0x102/0x170
[ 8664.700097][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8664.700097][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8664.700097][T12167]      netlink_rcv_skb+0x130/0x360
[ 8664.700097][T12167]      netlink_unicast+0x449/0x710
[ 8664.700097][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8664.700097][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8664.700097][T12167]      ___sys_sendmsg+0xee/0x170
[ 8664.700097][T12167]      __sys_sendmsg+0xcd/0x170
[ 8664.700097][T12167]      do_syscall_64+0xc6/0x1e0
[ 8664.700097][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8664.700097][T12167] 
[ 8668.053792][T12646] GACT probability NOT on
[ 8674.454842][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8674.455308][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8674.455308][   T10]      dst_init+0x84/0x4a0
[ 8674.455308][   T10]      dst_alloc+0x97/0x150
[ 8674.455308][   T10]      ip6_dst_alloc+0x23/0x90
[ 8674.455308][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8674.455308][   T10]      ip6_pol_route+0x56f/0x840
[ 8674.455308][   T10]      fib6_rule_lookup+0x334/0x630
[ 8674.455308][   T10]      ip6_route_output_flags+0x259/0x480
[ 8674.455308][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8674.455308][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8674.455308][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8674.455308][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8674.455308][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.455308][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.455308][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.455308][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.455308][   T10] 
[ 8674.457260][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.457260][   T10]      dst_init+0x84/0x4a0
[ 8674.457260][   T10]      dst_alloc+0x97/0x150
[ 8674.457260][   T10]      ip6_dst_alloc+0x23/0x90
[ 8674.457260][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8674.457260][   T10]      ip6_pol_route+0x56f/0x840
[ 8674.457260][   T10]      fib6_rule_lookup+0x334/0x630
[ 8674.457260][   T10]      ip6_route_output_flags+0x259/0x480
[ 8674.457260][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8674.457260][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8674.457260][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8674.457260][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8674.457260][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8674.457260][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.457260][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.457260][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.457260][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.457260][   T10] 
[ 8674.459315][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.459315][   T10]      dst_init+0x84/0x4a0
[ 8674.459315][   T10]      dst_alloc+0x97/0x150
[ 8674.459315][   T10]      ip6_dst_alloc+0x23/0x90
[ 8674.459315][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8674.459315][   T10]      ip6_pol_route+0x56f/0x840
[ 8674.459315][   T10]      fib6_rule_lookup+0x334/0x630
[ 8674.459315][   T10]      ip6_route_output_flags+0x259/0x480
[ 8674.459315][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8674.459315][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8674.459315][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8674.459315][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8674.459315][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8674.459315][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.459315][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.459315][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.459315][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.459315][   T10] 
[ 8674.461357][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.461357][   T10]      netdev_get_by_index+0x5e/0x80
[ 8674.461357][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8674.461357][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8674.461357][   T10]      ip6_route_add+0x1c/0x140
[ 8674.461357][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8674.461357][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8674.461357][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8674.461357][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.461357][   T10]      netlink_rcv_skb+0x130/0x360
[ 8674.461357][   T10]      netlink_unicast+0x449/0x710
[ 8674.461357][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8674.461357][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.461357][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.461357][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.461357][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.461357][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.461357][   T10] 
[ 8674.463390][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.463390][   T10]      netdev_get_by_index+0x5e/0x80
[ 8674.463390][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8674.463390][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8674.463390][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8674.463390][   T10]      ipv6_add_addr+0x411/0x2000
[ 8674.463390][   T10]      inet6_addr_add+0x30e/0xa40
[ 8674.463390][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8674.463390][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.463390][   T10]      netlink_rcv_skb+0x130/0x360
[ 8674.463390][   T10]      netlink_unicast+0x449/0x710
[ 8674.463390][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8674.463390][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.463390][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.463390][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.463390][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.463390][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.463390][   T10] 
[ 8674.465432][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.465432][   T10]      netdev_get_by_index+0x5e/0x80
[ 8674.465432][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8674.465432][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8674.465432][   T10]      ip6_route_add+0x1c/0x140
[ 8674.465432][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8674.465432][   T10]      addrconf_add_dev+0xe2/0x170
[ 8674.465432][   T10]      inet6_addr_add+0x12f/0xa40
[ 8674.465432][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8674.465432][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.465432][   T10]      netlink_rcv_skb+0x130/0x360
[ 8674.465432][   T10]      netlink_unicast+0x449/0x710
[ 8674.465432][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8674.465432][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.465432][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.465432][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.465432][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.465432][   T10] 
[ 8674.467411][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.467411][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8674.467411][   T10]      ipv6_find_idev+0x102/0x170
[ 8674.467411][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8674.467411][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.467411][   T10]      netlink_rcv_skb+0x130/0x360
[ 8674.467411][   T10]      netlink_unicast+0x449/0x710
[ 8674.467411][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8674.467411][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.467411][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.467411][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.467411][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.467411][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.467411][   T10] 
[ 8674.468973][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8674.468973][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8674.468973][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8674.468973][   T10]      ipv6_find_idev+0x102/0x170
[ 8674.468973][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8674.468973][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.468973][   T10]      netlink_rcv_skb+0x130/0x360
[ 8674.468973][   T10]      netlink_unicast+0x449/0x710
[ 8674.468973][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8674.468973][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.468973][   T10]      ___sys_sendmsg+0xee/0x170
[ 8674.468973][   T10]      __sys_sendmsg+0xcd/0x170
[ 8674.468973][   T10]      do_syscall_64+0xc6/0x1e0
[ 8674.468973][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.468973][   T10] 
[ 8674.742813][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8674.743254][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8674.743254][T12167]      netdev_get_by_index+0x5e/0x80
[ 8674.743254][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8674.743254][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8674.743254][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8674.743254][T12167]      ipv6_add_addr+0x411/0x2000
[ 8674.743254][T12167]      inet6_addr_add+0x30e/0xa40
[ 8674.743254][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8674.743254][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.743254][T12167]      netlink_rcv_skb+0x130/0x360
[ 8674.743254][T12167]      netlink_unicast+0x449/0x710
[ 8674.743254][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8674.743254][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.743254][T12167]      ___sys_sendmsg+0xee/0x170
[ 8674.743254][T12167]      __sys_sendmsg+0xcd/0x170
[ 8674.743254][T12167]      do_syscall_64+0xc6/0x1e0
[ 8674.743254][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.743254][T12167] 
[ 8674.745666][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8674.745666][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8674.745666][T12167]      ipv6_find_idev+0x102/0x170
[ 8674.745666][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8674.745666][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.745666][T12167]      netlink_rcv_skb+0x130/0x360
[ 8674.745666][T12167]      netlink_unicast+0x449/0x710
[ 8674.745666][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8674.745666][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.745666][T12167]      ___sys_sendmsg+0xee/0x170
[ 8674.745666][T12167]      __sys_sendmsg+0xcd/0x170
[ 8674.745666][T12167]      do_syscall_64+0xc6/0x1e0
[ 8674.745666][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.745666][T12167] 
[ 8674.747436][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8674.747436][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8674.747436][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8674.747436][T12167]      ipv6_find_idev+0x102/0x170
[ 8674.747436][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8674.747436][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8674.747436][T12167]      netlink_rcv_skb+0x130/0x360
[ 8674.747436][T12167]      netlink_unicast+0x449/0x710
[ 8674.747436][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8674.747436][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8674.747436][T12167]      ___sys_sendmsg+0xee/0x170
[ 8674.747436][T12167]      __sys_sendmsg+0xcd/0x170
[ 8674.747436][T12167]      do_syscall_64+0xc6/0x1e0
[ 8674.747436][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8674.747436][T12167] 
[ 8684.710879][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8684.711365][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8684.711365][   T10]      dst_init+0x84/0x4a0
[ 8684.711365][   T10]      dst_alloc+0x97/0x150
[ 8684.711365][   T10]      ip6_dst_alloc+0x23/0x90
[ 8684.711365][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8684.711365][   T10]      ip6_pol_route+0x56f/0x840
[ 8684.711365][   T10]      fib6_rule_lookup+0x334/0x630
[ 8684.711365][   T10]      ip6_route_output_flags+0x259/0x480
[ 8684.711365][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8684.711365][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8684.711365][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8684.711365][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8684.711365][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.711365][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.711365][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.711365][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.711365][   T10] 
[ 8684.713462][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.713462][   T10]      dst_init+0x84/0x4a0
[ 8684.713462][   T10]      dst_alloc+0x97/0x150
[ 8684.713462][   T10]      ip6_dst_alloc+0x23/0x90
[ 8684.713462][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8684.713462][   T10]      ip6_pol_route+0x56f/0x840
[ 8684.713462][   T10]      fib6_rule_lookup+0x334/0x630
[ 8684.713462][   T10]      ip6_route_output_flags+0x259/0x480
[ 8684.713462][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8684.713462][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8684.713462][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8684.713462][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8684.713462][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8684.713462][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.713462][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.713462][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.713462][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.713462][   T10] 
[ 8684.715526][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.715526][   T10]      dst_init+0x84/0x4a0
[ 8684.715526][   T10]      dst_alloc+0x97/0x150
[ 8684.715526][   T10]      ip6_dst_alloc+0x23/0x90
[ 8684.715526][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8684.715526][   T10]      ip6_pol_route+0x56f/0x840
[ 8684.715526][   T10]      fib6_rule_lookup+0x334/0x630
[ 8684.715526][   T10]      ip6_route_output_flags+0x259/0x480
[ 8684.715526][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8684.715526][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8684.715526][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8684.715526][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8684.715526][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8684.715526][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.715526][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.715526][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.715526][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.715526][   T10] 
[ 8684.717604][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.717604][   T10]      netdev_get_by_index+0x5e/0x80
[ 8684.717604][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8684.717604][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8684.717604][   T10]      ip6_route_add+0x1c/0x140
[ 8684.717604][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8684.717604][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8684.717604][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8684.717604][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.717604][   T10]      netlink_rcv_skb+0x130/0x360
[ 8684.717604][   T10]      netlink_unicast+0x449/0x710
[ 8684.717604][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8684.717604][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.717604][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.717604][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.717604][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.717604][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.717604][   T10] 
[ 8684.719660][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.719660][   T10]      netdev_get_by_index+0x5e/0x80
[ 8684.719660][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8684.719660][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8684.719660][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8684.719660][   T10]      ipv6_add_addr+0x411/0x2000
[ 8684.719660][   T10]      inet6_addr_add+0x30e/0xa40
[ 8684.719660][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8684.719660][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.719660][   T10]      netlink_rcv_skb+0x130/0x360
[ 8684.719660][   T10]      netlink_unicast+0x449/0x710
[ 8684.719660][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8684.719660][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.719660][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.719660][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.719660][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.719660][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.719660][   T10] 
[ 8684.721707][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.721707][   T10]      netdev_get_by_index+0x5e/0x80
[ 8684.721707][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8684.721707][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8684.721707][   T10]      ip6_route_add+0x1c/0x140
[ 8684.721707][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8684.721707][   T10]      addrconf_add_dev+0xe2/0x170
[ 8684.721707][   T10]      inet6_addr_add+0x12f/0xa40
[ 8684.721707][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8684.721707][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.721707][   T10]      netlink_rcv_skb+0x130/0x360
[ 8684.721707][   T10]      netlink_unicast+0x449/0x710
[ 8684.721707][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8684.721707][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.721707][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.721707][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.721707][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.721707][   T10] 
[ 8684.723741][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.723741][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8684.723741][   T10]      ipv6_find_idev+0x102/0x170
[ 8684.723741][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8684.723741][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.723741][   T10]      netlink_rcv_skb+0x130/0x360
[ 8684.723741][   T10]      netlink_unicast+0x449/0x710
[ 8684.723741][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8684.723741][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.723741][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.723741][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.723741][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.723741][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.723741][   T10] 
[ 8684.725342][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8684.725342][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8684.725342][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8684.725342][   T10]      ipv6_find_idev+0x102/0x170
[ 8684.725342][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8684.725342][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.725342][   T10]      netlink_rcv_skb+0x130/0x360
[ 8684.725342][   T10]      netlink_unicast+0x449/0x710
[ 8684.725342][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8684.725342][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.725342][   T10]      ___sys_sendmsg+0xee/0x170
[ 8684.725342][   T10]      __sys_sendmsg+0xcd/0x170
[ 8684.725342][   T10]      do_syscall_64+0xc6/0x1e0
[ 8684.725342][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.725342][   T10] 
[ 8684.990815][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8684.991197][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8684.991197][T12167]      netdev_get_by_index+0x5e/0x80
[ 8684.991197][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8684.991197][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8684.991197][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8684.991197][T12167]      ipv6_add_addr+0x411/0x2000
[ 8684.991197][T12167]      inet6_addr_add+0x30e/0xa40
[ 8684.991197][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8684.991197][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.991197][T12167]      netlink_rcv_skb+0x130/0x360
[ 8684.991197][T12167]      netlink_unicast+0x449/0x710
[ 8684.991197][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8684.991197][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.991197][T12167]      ___sys_sendmsg+0xee/0x170
[ 8684.991197][T12167]      __sys_sendmsg+0xcd/0x170
[ 8684.991197][T12167]      do_syscall_64+0xc6/0x1e0
[ 8684.991197][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.991197][T12167] 
[ 8684.993512][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8684.993512][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8684.993512][T12167]      ipv6_find_idev+0x102/0x170
[ 8684.993512][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8684.993512][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.993512][T12167]      netlink_rcv_skb+0x130/0x360
[ 8684.993512][T12167]      netlink_unicast+0x449/0x710
[ 8684.993512][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8684.993512][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.993512][T12167]      ___sys_sendmsg+0xee/0x170
[ 8684.993512][T12167]      __sys_sendmsg+0xcd/0x170
[ 8684.993512][T12167]      do_syscall_64+0xc6/0x1e0
[ 8684.993512][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.993512][T12167] 
[ 8684.995298][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8684.995298][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8684.995298][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8684.995298][T12167]      ipv6_find_idev+0x102/0x170
[ 8684.995298][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8684.995298][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8684.995298][T12167]      netlink_rcv_skb+0x130/0x360
[ 8684.995298][T12167]      netlink_unicast+0x449/0x710
[ 8684.995298][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8684.995298][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8684.995298][T12167]      ___sys_sendmsg+0xee/0x170
[ 8684.995298][T12167]      __sys_sendmsg+0xcd/0x170
[ 8684.995298][T12167]      do_syscall_64+0xc6/0x1e0
[ 8684.995298][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8684.995298][T12167] 
[ 8694.966834][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8694.967363][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8694.967363][   T10]      dst_init+0x84/0x4a0
[ 8694.967363][   T10]      dst_alloc+0x97/0x150
[ 8694.967363][   T10]      ip6_dst_alloc+0x23/0x90
[ 8694.967363][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8694.967363][   T10]      ip6_pol_route+0x56f/0x840
[ 8694.967363][   T10]      fib6_rule_lookup+0x334/0x630
[ 8694.967363][   T10]      ip6_route_output_flags+0x259/0x480
[ 8694.967363][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8694.967363][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8694.967363][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8694.967363][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8694.967363][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.967363][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.967363][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.967363][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.967363][   T10] 
[ 8694.969620][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.969620][   T10]      dst_init+0x84/0x4a0
[ 8694.969620][   T10]      dst_alloc+0x97/0x150
[ 8694.969620][   T10]      ip6_dst_alloc+0x23/0x90
[ 8694.969620][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8694.969620][   T10]      ip6_pol_route+0x56f/0x840
[ 8694.969620][   T10]      fib6_rule_lookup+0x334/0x630
[ 8694.969620][   T10]      ip6_route_output_flags+0x259/0x480
[ 8694.969620][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8694.969620][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8694.969620][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8694.969620][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8694.969620][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8694.969620][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.969620][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.969620][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.969620][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.969620][   T10] 
[ 8694.971633][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.971633][   T10]      dst_init+0x84/0x4a0
[ 8694.971633][   T10]      dst_alloc+0x97/0x150
[ 8694.971633][   T10]      ip6_dst_alloc+0x23/0x90
[ 8694.971633][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8694.971633][   T10]      ip6_pol_route+0x56f/0x840
[ 8694.971633][   T10]      fib6_rule_lookup+0x334/0x630
[ 8694.971633][   T10]      ip6_route_output_flags+0x259/0x480
[ 8694.971633][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8694.971633][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8694.971633][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8694.971633][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8694.971633][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8694.971633][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.971633][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.971633][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.971633][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.971633][   T10] 
[ 8694.973653][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.973653][   T10]      netdev_get_by_index+0x5e/0x80
[ 8694.973653][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8694.973653][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8694.973653][   T10]      ip6_route_add+0x1c/0x140
[ 8694.973653][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8694.973653][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8694.973653][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8694.973653][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8694.973653][   T10]      netlink_rcv_skb+0x130/0x360
[ 8694.973653][   T10]      netlink_unicast+0x449/0x710
[ 8694.973653][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8694.973653][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8694.973653][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.973653][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.973653][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.973653][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.973653][   T10] 
[ 8694.975683][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.975683][   T10]      netdev_get_by_index+0x5e/0x80
[ 8694.975683][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8694.975683][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8694.975683][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8694.975683][   T10]      ipv6_add_addr+0x411/0x2000
[ 8694.975683][   T10]      inet6_addr_add+0x30e/0xa40
[ 8694.975683][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8694.975683][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8694.975683][   T10]      netlink_rcv_skb+0x130/0x360
[ 8694.975683][   T10]      netlink_unicast+0x449/0x710
[ 8694.975683][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8694.975683][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8694.975683][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.975683][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.975683][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.975683][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.975683][   T10] 
[ 8694.977691][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.977691][   T10]      netdev_get_by_index+0x5e/0x80
[ 8694.977691][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8694.977691][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8694.977691][   T10]      ip6_route_add+0x1c/0x140
[ 8694.977691][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8694.977691][   T10]      addrconf_add_dev+0xe2/0x170
[ 8694.977691][   T10]      inet6_addr_add+0x12f/0xa40
[ 8694.977691][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8694.977691][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8694.977691][   T10]      netlink_rcv_skb+0x130/0x360
[ 8694.977691][   T10]      netlink_unicast+0x449/0x710
[ 8694.977691][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8694.977691][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8694.977691][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.977691][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.977691][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.977691][   T10] 
[ 8694.979676][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.979676][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8694.979676][   T10]      ipv6_find_idev+0x102/0x170
[ 8694.979676][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8694.979676][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8694.979676][   T10]      netlink_rcv_skb+0x130/0x360
[ 8694.979676][   T10]      netlink_unicast+0x449/0x710
[ 8694.979676][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8694.979676][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8694.979676][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.979676][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.979676][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.979676][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.979676][   T10] 
[ 8694.981224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8694.981224][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8694.981224][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8694.981224][   T10]      ipv6_find_idev+0x102/0x170
[ 8694.981224][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8694.981224][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8694.981224][   T10]      netlink_rcv_skb+0x130/0x360
[ 8694.981224][   T10]      netlink_unicast+0x449/0x710
[ 8694.981224][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8694.981224][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8694.981224][   T10]      ___sys_sendmsg+0xee/0x170
[ 8694.981224][   T10]      __sys_sendmsg+0xcd/0x170
[ 8694.981224][   T10]      do_syscall_64+0xc6/0x1e0
[ 8694.981224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8694.981224][   T10] 
[ 8695.254802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8695.255222][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8695.255222][T12167]      netdev_get_by_index+0x5e/0x80
[ 8695.255222][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8695.255222][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8695.255222][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8695.255222][T12167]      ipv6_add_addr+0x411/0x2000
[ 8695.255222][T12167]      inet6_addr_add+0x30e/0xa40
[ 8695.255222][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8695.255222][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8695.255222][T12167]      netlink_rcv_skb+0x130/0x360
[ 8695.255222][T12167]      netlink_unicast+0x449/0x710
[ 8695.255222][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8695.255222][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8695.255222][T12167]      ___sys_sendmsg+0xee/0x170
[ 8695.255222][T12167]      __sys_sendmsg+0xcd/0x170
[ 8695.255222][T12167]      do_syscall_64+0xc6/0x1e0
[ 8695.255222][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8695.255222][T12167] 
[ 8695.257504][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8695.257504][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8695.257504][T12167]      ipv6_find_idev+0x102/0x170
[ 8695.257504][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8695.257504][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8695.257504][T12167]      netlink_rcv_skb+0x130/0x360
[ 8695.257504][T12167]      netlink_unicast+0x449/0x710
[ 8695.257504][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8695.257504][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8695.257504][T12167]      ___sys_sendmsg+0xee/0x170
[ 8695.257504][T12167]      __sys_sendmsg+0xcd/0x170
[ 8695.257504][T12167]      do_syscall_64+0xc6/0x1e0
[ 8695.257504][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8695.257504][T12167] 
[ 8695.259234][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8695.259234][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8695.259234][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8695.259234][T12167]      ipv6_find_idev+0x102/0x170
[ 8695.259234][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8695.259234][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8695.259234][T12167]      netlink_rcv_skb+0x130/0x360
[ 8695.259234][T12167]      netlink_unicast+0x449/0x710
[ 8695.259234][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8695.259234][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8695.259234][T12167]      ___sys_sendmsg+0xee/0x170
[ 8695.259234][T12167]      __sys_sendmsg+0xcd/0x170
[ 8695.259234][T12167]      do_syscall_64+0xc6/0x1e0
[ 8695.259234][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8695.259234][T12167] 
[ 8705.230807][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8705.231209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8705.231209][   T10]      dst_init+0x84/0x4a0
[ 8705.231209][   T10]      dst_alloc+0x97/0x150
[ 8705.231209][   T10]      ip6_dst_alloc+0x23/0x90
[ 8705.231209][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8705.231209][   T10]      ip6_pol_route+0x56f/0x840
[ 8705.231209][   T10]      fib6_rule_lookup+0x334/0x630
[ 8705.231209][   T10]      ip6_route_output_flags+0x259/0x480
[ 8705.231209][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8705.231209][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8705.231209][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8705.231209][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8705.231209][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.231209][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.231209][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.231209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.231209][   T10] 
[ 8705.233137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.233137][   T10]      dst_init+0x84/0x4a0
[ 8705.233137][   T10]      dst_alloc+0x97/0x150
[ 8705.233137][   T10]      ip6_dst_alloc+0x23/0x90
[ 8705.233137][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8705.233137][   T10]      ip6_pol_route+0x56f/0x840
[ 8705.233137][   T10]      fib6_rule_lookup+0x334/0x630
[ 8705.233137][   T10]      ip6_route_output_flags+0x259/0x480
[ 8705.233137][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8705.233137][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8705.233137][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8705.233137][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8705.233137][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8705.233137][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.233137][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.233137][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.233137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.233137][   T10] 
[ 8705.235164][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.235164][   T10]      dst_init+0x84/0x4a0
[ 8705.235164][   T10]      dst_alloc+0x97/0x150
[ 8705.235164][   T10]      ip6_dst_alloc+0x23/0x90
[ 8705.235164][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8705.235164][   T10]      ip6_pol_route+0x56f/0x840
[ 8705.235164][   T10]      fib6_rule_lookup+0x334/0x630
[ 8705.235164][   T10]      ip6_route_output_flags+0x259/0x480
[ 8705.235164][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8705.235164][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8705.235164][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8705.235164][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8705.235164][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8705.235164][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.235164][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.235164][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.235164][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.235164][   T10] 
[ 8705.237183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.237183][   T10]      netdev_get_by_index+0x5e/0x80
[ 8705.237183][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8705.237183][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8705.237183][   T10]      ip6_route_add+0x1c/0x140
[ 8705.237183][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8705.237183][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8705.237183][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8705.237183][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.237183][   T10]      netlink_rcv_skb+0x130/0x360
[ 8705.237183][   T10]      netlink_unicast+0x449/0x710
[ 8705.237183][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8705.237183][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.237183][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.237183][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.237183][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.237183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.237183][   T10] 
[ 8705.239203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.239203][   T10]      netdev_get_by_index+0x5e/0x80
[ 8705.239203][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8705.239203][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8705.239203][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8705.239203][   T10]      ipv6_add_addr+0x411/0x2000
[ 8705.239203][   T10]      inet6_addr_add+0x30e/0xa40
[ 8705.239203][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8705.239203][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.239203][   T10]      netlink_rcv_skb+0x130/0x360
[ 8705.239203][   T10]      netlink_unicast+0x449/0x710
[ 8705.239203][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8705.239203][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.239203][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.239203][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.239203][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.239203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.239203][   T10] 
[ 8705.241239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.241239][   T10]      netdev_get_by_index+0x5e/0x80
[ 8705.241239][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8705.241239][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8705.241239][   T10]      ip6_route_add+0x1c/0x140
[ 8705.241239][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8705.241239][   T10]      addrconf_add_dev+0xe2/0x170
[ 8705.241239][   T10]      inet6_addr_add+0x12f/0xa40
[ 8705.241239][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8705.241239][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.241239][   T10]      netlink_rcv_skb+0x130/0x360
[ 8705.241239][   T10]      netlink_unicast+0x449/0x710
[ 8705.241239][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8705.241239][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.241239][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.241239][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.241239][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.241239][   T10] 
[ 8705.243232][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.243232][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8705.243232][   T10]      ipv6_find_idev+0x102/0x170
[ 8705.243232][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8705.243232][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.243232][   T10]      netlink_rcv_skb+0x130/0x360
[ 8705.243232][   T10]      netlink_unicast+0x449/0x710
[ 8705.243232][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8705.243232][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.243232][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.243232][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.243232][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.243232][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.243232][   T10] 
[ 8705.244793][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8705.244793][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8705.244793][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8705.244793][   T10]      ipv6_find_idev+0x102/0x170
[ 8705.244793][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8705.244793][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.244793][   T10]      netlink_rcv_skb+0x130/0x360
[ 8705.244793][   T10]      netlink_unicast+0x449/0x710
[ 8705.244793][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8705.244793][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.244793][   T10]      ___sys_sendmsg+0xee/0x170
[ 8705.244793][   T10]      __sys_sendmsg+0xcd/0x170
[ 8705.244793][   T10]      do_syscall_64+0xc6/0x1e0
[ 8705.244793][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.244793][   T10] 
[ 8705.510802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8705.511163][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8705.511163][T12167]      netdev_get_by_index+0x5e/0x80
[ 8705.511163][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8705.511163][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8705.511163][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8705.511163][T12167]      ipv6_add_addr+0x411/0x2000
[ 8705.511163][T12167]      inet6_addr_add+0x30e/0xa40
[ 8705.511163][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8705.511163][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.511163][T12167]      netlink_rcv_skb+0x130/0x360
[ 8705.511163][T12167]      netlink_unicast+0x449/0x710
[ 8705.511163][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8705.511163][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.511163][T12167]      ___sys_sendmsg+0xee/0x170
[ 8705.511163][T12167]      __sys_sendmsg+0xcd/0x170
[ 8705.511163][T12167]      do_syscall_64+0xc6/0x1e0
[ 8705.511163][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.511163][T12167] 
[ 8705.513436][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8705.513436][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8705.513436][T12167]      ipv6_find_idev+0x102/0x170
[ 8705.513436][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8705.513436][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.513436][T12167]      netlink_rcv_skb+0x130/0x360
[ 8705.513436][T12167]      netlink_unicast+0x449/0x710
[ 8705.513436][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8705.513436][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.513436][T12167]      ___sys_sendmsg+0xee/0x170
[ 8705.513436][T12167]      __sys_sendmsg+0xcd/0x170
[ 8705.513436][T12167]      do_syscall_64+0xc6/0x1e0
[ 8705.513436][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.513436][T12167] 
[ 8705.515196][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8705.515196][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8705.515196][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8705.515196][T12167]      ipv6_find_idev+0x102/0x170
[ 8705.515196][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8705.515196][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8705.515196][T12167]      netlink_rcv_skb+0x130/0x360
[ 8705.515196][T12167]      netlink_unicast+0x449/0x710
[ 8705.515196][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8705.515196][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8705.515196][T12167]      ___sys_sendmsg+0xee/0x170
[ 8705.515196][T12167]      __sys_sendmsg+0xcd/0x170
[ 8705.515196][T12167]      do_syscall_64+0xc6/0x1e0
[ 8705.515196][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8705.515196][T12167] 
[ 8715.486820][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8715.487245][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8715.487245][   T10]      dst_init+0x84/0x4a0
[ 8715.487245][   T10]      dst_alloc+0x97/0x150
[ 8715.487245][   T10]      ip6_dst_alloc+0x23/0x90
[ 8715.487245][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8715.487245][   T10]      ip6_pol_route+0x56f/0x840
[ 8715.487245][   T10]      fib6_rule_lookup+0x334/0x630
[ 8715.487245][   T10]      ip6_route_output_flags+0x259/0x480
[ 8715.487245][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8715.487245][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8715.487245][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8715.487245][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8715.487245][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.487245][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.487245][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.487245][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.487245][   T10] 
[ 8715.489193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.489193][   T10]      dst_init+0x84/0x4a0
[ 8715.489193][   T10]      dst_alloc+0x97/0x150
[ 8715.489193][   T10]      ip6_dst_alloc+0x23/0x90
[ 8715.489193][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8715.489193][   T10]      ip6_pol_route+0x56f/0x840
[ 8715.489193][   T10]      fib6_rule_lookup+0x334/0x630
[ 8715.489193][   T10]      ip6_route_output_flags+0x259/0x480
[ 8715.489193][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8715.489193][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8715.489193][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8715.489193][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8715.489193][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8715.489193][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.489193][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.489193][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.489193][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.489193][   T10] 
[ 8715.491236][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.491236][   T10]      dst_init+0x84/0x4a0
[ 8715.491236][   T10]      dst_alloc+0x97/0x150
[ 8715.491236][   T10]      ip6_dst_alloc+0x23/0x90
[ 8715.491236][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8715.491236][   T10]      ip6_pol_route+0x56f/0x840
[ 8715.491236][   T10]      fib6_rule_lookup+0x334/0x630
[ 8715.491236][   T10]      ip6_route_output_flags+0x259/0x480
[ 8715.491236][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8715.491236][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8715.491236][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8715.491236][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8715.491236][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8715.491236][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.491236][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.491236][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.491236][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.491236][   T10] 
[ 8715.493281][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.493281][   T10]      netdev_get_by_index+0x5e/0x80
[ 8715.493281][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8715.493281][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8715.493281][   T10]      ip6_route_add+0x1c/0x140
[ 8715.493281][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8715.493281][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8715.493281][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8715.493281][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.493281][   T10]      netlink_rcv_skb+0x130/0x360
[ 8715.493281][   T10]      netlink_unicast+0x449/0x710
[ 8715.493281][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8715.493281][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.493281][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.493281][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.493281][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.493281][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.493281][   T10] 
[ 8715.495333][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.495333][   T10]      netdev_get_by_index+0x5e/0x80
[ 8715.495333][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8715.495333][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8715.495333][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8715.495333][   T10]      ipv6_add_addr+0x411/0x2000
[ 8715.495333][   T10]      inet6_addr_add+0x30e/0xa40
[ 8715.495333][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8715.495333][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.495333][   T10]      netlink_rcv_skb+0x130/0x360
[ 8715.495333][   T10]      netlink_unicast+0x449/0x710
[ 8715.495333][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8715.495333][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.495333][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.495333][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.495333][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.495333][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.495333][   T10] 
[ 8715.497458][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.497458][   T10]      netdev_get_by_index+0x5e/0x80
[ 8715.497458][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8715.497458][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8715.497458][   T10]      ip6_route_add+0x1c/0x140
[ 8715.497458][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8715.497458][   T10]      addrconf_add_dev+0xe2/0x170
[ 8715.497458][   T10]      inet6_addr_add+0x12f/0xa40
[ 8715.497458][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8715.497458][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.497458][   T10]      netlink_rcv_skb+0x130/0x360
[ 8715.497458][   T10]      netlink_unicast+0x449/0x710
[ 8715.497458][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8715.497458][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.497458][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.497458][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.497458][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.497458][   T10] 
[ 8715.499462][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.499462][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8715.499462][   T10]      ipv6_find_idev+0x102/0x170
[ 8715.499462][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8715.499462][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.499462][   T10]      netlink_rcv_skb+0x130/0x360
[ 8715.499462][   T10]      netlink_unicast+0x449/0x710
[ 8715.499462][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8715.499462][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.499462][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.499462][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.499462][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.499462][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.499462][   T10] 
[ 8715.501037][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8715.501037][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8715.501037][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8715.501037][   T10]      ipv6_find_idev+0x102/0x170
[ 8715.501037][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8715.501037][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.501037][   T10]      netlink_rcv_skb+0x130/0x360
[ 8715.501037][   T10]      netlink_unicast+0x449/0x710
[ 8715.501037][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8715.501037][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.501037][   T10]      ___sys_sendmsg+0xee/0x170
[ 8715.501037][   T10]      __sys_sendmsg+0xcd/0x170
[ 8715.501037][   T10]      do_syscall_64+0xc6/0x1e0
[ 8715.501037][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.501037][   T10] 
[ 8715.766823][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8715.767249][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8715.767249][T12167]      netdev_get_by_index+0x5e/0x80
[ 8715.767249][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8715.767249][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8715.767249][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8715.767249][T12167]      ipv6_add_addr+0x411/0x2000
[ 8715.767249][T12167]      inet6_addr_add+0x30e/0xa40
[ 8715.767249][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8715.767249][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.767249][T12167]      netlink_rcv_skb+0x130/0x360
[ 8715.767249][T12167]      netlink_unicast+0x449/0x710
[ 8715.767249][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8715.767249][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.767249][T12167]      ___sys_sendmsg+0xee/0x170
[ 8715.767249][T12167]      __sys_sendmsg+0xcd/0x170
[ 8715.767249][T12167]      do_syscall_64+0xc6/0x1e0
[ 8715.767249][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.767249][T12167] 
[ 8715.769518][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8715.769518][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8715.769518][T12167]      ipv6_find_idev+0x102/0x170
[ 8715.769518][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8715.769518][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.769518][T12167]      netlink_rcv_skb+0x130/0x360
[ 8715.769518][T12167]      netlink_unicast+0x449/0x710
[ 8715.769518][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8715.769518][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.769518][T12167]      ___sys_sendmsg+0xee/0x170
[ 8715.769518][T12167]      __sys_sendmsg+0xcd/0x170
[ 8715.769518][T12167]      do_syscall_64+0xc6/0x1e0
[ 8715.769518][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.769518][T12167] 
[ 8715.771252][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8715.771252][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8715.771252][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8715.771252][T12167]      ipv6_find_idev+0x102/0x170
[ 8715.771252][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8715.771252][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8715.771252][T12167]      netlink_rcv_skb+0x130/0x360
[ 8715.771252][T12167]      netlink_unicast+0x449/0x710
[ 8715.771252][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8715.771252][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8715.771252][T12167]      ___sys_sendmsg+0xee/0x170
[ 8715.771252][T12167]      __sys_sendmsg+0xcd/0x170
[ 8715.771252][T12167]      do_syscall_64+0xc6/0x1e0
[ 8715.771252][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8715.771252][T12167] 
[ 8725.606806][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8725.607285][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8725.607285][   T10]      dst_init+0x84/0x4a0
[ 8725.607285][   T10]      dst_alloc+0x97/0x150
[ 8725.607285][   T10]      ip6_dst_alloc+0x23/0x90
[ 8725.607285][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8725.607285][   T10]      ip6_pol_route+0x56f/0x840
[ 8725.607285][   T10]      fib6_rule_lookup+0x334/0x630
[ 8725.607285][   T10]      ip6_route_output_flags+0x259/0x480
[ 8725.607285][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8725.607285][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8725.607285][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8725.607285][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8725.607285][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.607285][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.607285][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.607285][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.607285][   T10] 
[ 8725.609193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.609193][   T10]      dst_init+0x84/0x4a0
[ 8725.609193][   T10]      dst_alloc+0x97/0x150
[ 8725.609193][   T10]      ip6_dst_alloc+0x23/0x90
[ 8725.609193][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8725.609193][   T10]      ip6_pol_route+0x56f/0x840
[ 8725.609193][   T10]      fib6_rule_lookup+0x334/0x630
[ 8725.609193][   T10]      ip6_route_output_flags+0x259/0x480
[ 8725.609193][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8725.609193][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8725.609193][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8725.609193][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8725.609193][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8725.609193][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.609193][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.609193][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.609193][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.609193][   T10] 
[ 8725.611210][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.611210][   T10]      dst_init+0x84/0x4a0
[ 8725.611210][   T10]      dst_alloc+0x97/0x150
[ 8725.611210][   T10]      ip6_dst_alloc+0x23/0x90
[ 8725.611210][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8725.611210][   T10]      ip6_pol_route+0x56f/0x840
[ 8725.611210][   T10]      fib6_rule_lookup+0x334/0x630
[ 8725.611210][   T10]      ip6_route_output_flags+0x259/0x480
[ 8725.611210][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8725.611210][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8725.611210][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8725.611210][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8725.611210][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8725.611210][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.611210][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.611210][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.611210][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.611210][   T10] 
[ 8725.613220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.613220][   T10]      netdev_get_by_index+0x5e/0x80
[ 8725.613220][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8725.613220][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8725.613220][   T10]      ip6_route_add+0x1c/0x140
[ 8725.613220][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8725.613220][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8725.613220][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8725.613220][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.613220][   T10]      netlink_rcv_skb+0x130/0x360
[ 8725.613220][   T10]      netlink_unicast+0x449/0x710
[ 8725.613220][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8725.613220][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.613220][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.613220][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.613220][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.613220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.613220][   T10] 
[ 8725.615240][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.615240][   T10]      netdev_get_by_index+0x5e/0x80
[ 8725.615240][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8725.615240][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8725.615240][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8725.615240][   T10]      ipv6_add_addr+0x411/0x2000
[ 8725.615240][   T10]      inet6_addr_add+0x30e/0xa40
[ 8725.615240][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8725.615240][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.615240][   T10]      netlink_rcv_skb+0x130/0x360
[ 8725.615240][   T10]      netlink_unicast+0x449/0x710
[ 8725.615240][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8725.615240][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.615240][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.615240][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.615240][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.615240][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.615240][   T10] 
[ 8725.617317][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.617317][   T10]      netdev_get_by_index+0x5e/0x80
[ 8725.617317][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8725.617317][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8725.617317][   T10]      ip6_route_add+0x1c/0x140
[ 8725.617317][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8725.617317][   T10]      addrconf_add_dev+0xe2/0x170
[ 8725.617317][   T10]      inet6_addr_add+0x12f/0xa40
[ 8725.617317][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8725.617317][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.617317][   T10]      netlink_rcv_skb+0x130/0x360
[ 8725.617317][   T10]      netlink_unicast+0x449/0x710
[ 8725.617317][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8725.617317][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.617317][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.617317][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.617317][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.617317][   T10] 
[ 8725.619296][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.619296][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8725.619296][   T10]      ipv6_find_idev+0x102/0x170
[ 8725.619296][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8725.619296][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.619296][   T10]      netlink_rcv_skb+0x130/0x360
[ 8725.619296][   T10]      netlink_unicast+0x449/0x710
[ 8725.619296][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8725.619296][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.619296][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.619296][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.619296][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.619296][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.619296][   T10] 
[ 8725.620849][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8725.620849][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8725.620849][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8725.620849][   T10]      ipv6_find_idev+0x102/0x170
[ 8725.620849][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8725.620849][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.620849][   T10]      netlink_rcv_skb+0x130/0x360
[ 8725.620849][   T10]      netlink_unicast+0x449/0x710
[ 8725.620849][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8725.620849][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.620849][   T10]      ___sys_sendmsg+0xee/0x170
[ 8725.620849][   T10]      __sys_sendmsg+0xcd/0x170
[ 8725.620849][   T10]      do_syscall_64+0xc6/0x1e0
[ 8725.620849][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.620849][   T10] 
[ 8725.878856][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8725.879287][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8725.879287][T12167]      netdev_get_by_index+0x5e/0x80
[ 8725.879287][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8725.879287][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8725.879287][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8725.879287][T12167]      ipv6_add_addr+0x411/0x2000
[ 8725.879287][T12167]      inet6_addr_add+0x30e/0xa40
[ 8725.879287][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8725.879287][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.879287][T12167]      netlink_rcv_skb+0x130/0x360
[ 8725.879287][T12167]      netlink_unicast+0x449/0x710
[ 8725.879287][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8725.879287][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.879287][T12167]      ___sys_sendmsg+0xee/0x170
[ 8725.879287][T12167]      __sys_sendmsg+0xcd/0x170
[ 8725.879287][T12167]      do_syscall_64+0xc6/0x1e0
[ 8725.879287][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.879287][T12167] 
[ 8725.881568][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8725.881568][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8725.881568][T12167]      ipv6_find_idev+0x102/0x170
[ 8725.881568][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8725.881568][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.881568][T12167]      netlink_rcv_skb+0x130/0x360
[ 8725.881568][T12167]      netlink_unicast+0x449/0x710
[ 8725.881568][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8725.881568][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.881568][T12167]      ___sys_sendmsg+0xee/0x170
[ 8725.881568][T12167]      __sys_sendmsg+0xcd/0x170
[ 8725.881568][T12167]      do_syscall_64+0xc6/0x1e0
[ 8725.881568][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.881568][T12167] 
[ 8725.883300][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8725.883300][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8725.883300][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8725.883300][T12167]      ipv6_find_idev+0x102/0x170
[ 8725.883300][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8725.883300][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8725.883300][T12167]      netlink_rcv_skb+0x130/0x360
[ 8725.883300][T12167]      netlink_unicast+0x449/0x710
[ 8725.883300][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8725.883300][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8725.883300][T12167]      ___sys_sendmsg+0xee/0x170
[ 8725.883300][T12167]      __sys_sendmsg+0xcd/0x170
[ 8725.883300][T12167]      do_syscall_64+0xc6/0x1e0
[ 8725.883300][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8725.883300][T12167] 
[ 8735.862812][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8735.863220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8735.863220][   T10]      dst_init+0x84/0x4a0
[ 8735.863220][   T10]      dst_alloc+0x97/0x150
[ 8735.863220][   T10]      ip6_dst_alloc+0x23/0x90
[ 8735.863220][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8735.863220][   T10]      ip6_pol_route+0x56f/0x840
[ 8735.863220][   T10]      fib6_rule_lookup+0x334/0x630
[ 8735.863220][   T10]      ip6_route_output_flags+0x259/0x480
[ 8735.863220][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8735.863220][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8735.863220][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8735.863220][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8735.863220][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.863220][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.863220][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.863220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.863220][   T10] 
[ 8735.865160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.865160][   T10]      dst_init+0x84/0x4a0
[ 8735.865160][   T10]      dst_alloc+0x97/0x150
[ 8735.865160][   T10]      ip6_dst_alloc+0x23/0x90
[ 8735.865160][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8735.865160][   T10]      ip6_pol_route+0x56f/0x840
[ 8735.865160][   T10]      fib6_rule_lookup+0x334/0x630
[ 8735.865160][   T10]      ip6_route_output_flags+0x259/0x480
[ 8735.865160][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8735.865160][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8735.865160][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8735.865160][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8735.865160][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8735.865160][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.865160][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.865160][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.865160][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.865160][   T10] 
[ 8735.867182][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.867182][   T10]      dst_init+0x84/0x4a0
[ 8735.867182][   T10]      dst_alloc+0x97/0x150
[ 8735.867182][   T10]      ip6_dst_alloc+0x23/0x90
[ 8735.867182][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8735.867182][   T10]      ip6_pol_route+0x56f/0x840
[ 8735.867182][   T10]      fib6_rule_lookup+0x334/0x630
[ 8735.867182][   T10]      ip6_route_output_flags+0x259/0x480
[ 8735.867182][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8735.867182][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8735.867182][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8735.867182][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8735.867182][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8735.867182][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.867182][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.867182][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.867182][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.867182][   T10] 
[ 8735.869194][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.869194][   T10]      netdev_get_by_index+0x5e/0x80
[ 8735.869194][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8735.869194][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8735.869194][   T10]      ip6_route_add+0x1c/0x140
[ 8735.869194][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8735.869194][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8735.869194][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8735.869194][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.869194][   T10]      netlink_rcv_skb+0x130/0x360
[ 8735.869194][   T10]      netlink_unicast+0x449/0x710
[ 8735.869194][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8735.869194][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.869194][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.869194][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.869194][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.869194][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.869194][   T10] 
[ 8735.871201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.871201][   T10]      netdev_get_by_index+0x5e/0x80
[ 8735.871201][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8735.871201][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8735.871201][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8735.871201][   T10]      ipv6_add_addr+0x411/0x2000
[ 8735.871201][   T10]      inet6_addr_add+0x30e/0xa40
[ 8735.871201][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8735.871201][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.871201][   T10]      netlink_rcv_skb+0x130/0x360
[ 8735.871201][   T10]      netlink_unicast+0x449/0x710
[ 8735.871201][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8735.871201][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.871201][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.871201][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.871201][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.871201][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.871201][   T10] 
[ 8735.873204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.873204][   T10]      netdev_get_by_index+0x5e/0x80
[ 8735.873204][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8735.873204][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8735.873204][   T10]      ip6_route_add+0x1c/0x140
[ 8735.873204][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8735.873204][   T10]      addrconf_add_dev+0xe2/0x170
[ 8735.873204][   T10]      inet6_addr_add+0x12f/0xa40
[ 8735.873204][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8735.873204][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.873204][   T10]      netlink_rcv_skb+0x130/0x360
[ 8735.873204][   T10]      netlink_unicast+0x449/0x710
[ 8735.873204][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8735.873204][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.873204][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.873204][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.873204][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.873204][   T10] 
[ 8735.875184][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.875184][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8735.875184][   T10]      ipv6_find_idev+0x102/0x170
[ 8735.875184][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8735.875184][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.875184][   T10]      netlink_rcv_skb+0x130/0x360
[ 8735.875184][   T10]      netlink_unicast+0x449/0x710
[ 8735.875184][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8735.875184][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.875184][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.875184][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.875184][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.875184][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.875184][   T10] 
[ 8735.876745][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8735.876745][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8735.876745][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8735.876745][   T10]      ipv6_find_idev+0x102/0x170
[ 8735.876745][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8735.876745][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.876745][   T10]      netlink_rcv_skb+0x130/0x360
[ 8735.876745][   T10]      netlink_unicast+0x449/0x710
[ 8735.876745][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8735.876745][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.876745][   T10]      ___sys_sendmsg+0xee/0x170
[ 8735.876745][   T10]      __sys_sendmsg+0xcd/0x170
[ 8735.876745][   T10]      do_syscall_64+0xc6/0x1e0
[ 8735.876745][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.876745][   T10] 
[ 8735.886875][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8735.887224][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8735.887224][T12167]      netdev_get_by_index+0x5e/0x80
[ 8735.887224][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8735.887224][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8735.887224][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8735.887224][T12167]      ipv6_add_addr+0x411/0x2000
[ 8735.887224][T12167]      inet6_addr_add+0x30e/0xa40
[ 8735.887224][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8735.887224][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.887224][T12167]      netlink_rcv_skb+0x130/0x360
[ 8735.887224][T12167]      netlink_unicast+0x449/0x710
[ 8735.887224][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8735.887224][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.887224][T12167]      ___sys_sendmsg+0xee/0x170
[ 8735.887224][T12167]      __sys_sendmsg+0xcd/0x170
[ 8735.887224][T12167]      do_syscall_64+0xc6/0x1e0
[ 8735.887224][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.887224][T12167] 
[ 8735.889492][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8735.889492][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8735.889492][T12167]      ipv6_find_idev+0x102/0x170
[ 8735.889492][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8735.889492][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.889492][T12167]      netlink_rcv_skb+0x130/0x360
[ 8735.889492][T12167]      netlink_unicast+0x449/0x710
[ 8735.889492][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8735.889492][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.889492][T12167]      ___sys_sendmsg+0xee/0x170
[ 8735.889492][T12167]      __sys_sendmsg+0xcd/0x170
[ 8735.889492][T12167]      do_syscall_64+0xc6/0x1e0
[ 8735.889492][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.889492][T12167] 
[ 8735.891231][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8735.891231][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8735.891231][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8735.891231][T12167]      ipv6_find_idev+0x102/0x170
[ 8735.891231][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8735.891231][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8735.891231][T12167]      netlink_rcv_skb+0x130/0x360
[ 8735.891231][T12167]      netlink_unicast+0x449/0x710
[ 8735.891231][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8735.891231][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8735.891231][T12167]      ___sys_sendmsg+0xee/0x170
[ 8735.891231][T12167]      __sys_sendmsg+0xcd/0x170
[ 8735.891231][T12167]      do_syscall_64+0xc6/0x1e0
[ 8735.891231][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8735.891231][T12167] 
[ 8746.126899][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8746.127307][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8746.127307][   T10]      dst_init+0x84/0x4a0
[ 8746.127307][   T10]      dst_alloc+0x97/0x150
[ 8746.127307][   T10]      ip6_dst_alloc+0x23/0x90
[ 8746.127307][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8746.127307][   T10]      ip6_pol_route+0x56f/0x840
[ 8746.127307][   T10]      fib6_rule_lookup+0x334/0x630
[ 8746.127307][   T10]      ip6_route_output_flags+0x259/0x480
[ 8746.127307][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8746.127307][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8746.127307][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8746.127307][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8746.127307][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.127307][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.127307][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.127307][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.127307][   T10] 
[ 8746.129229][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.129229][   T10]      dst_init+0x84/0x4a0
[ 8746.129229][   T10]      dst_alloc+0x97/0x150
[ 8746.129229][   T10]      ip6_dst_alloc+0x23/0x90
[ 8746.129229][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8746.129229][   T10]      ip6_pol_route+0x56f/0x840
[ 8746.129229][   T10]      fib6_rule_lookup+0x334/0x630
[ 8746.129229][   T10]      ip6_route_output_flags+0x259/0x480
[ 8746.129229][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8746.129229][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8746.129229][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8746.129229][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8746.129229][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8746.129229][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.129229][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.129229][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.129229][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.129229][   T10] 
[ 8746.131255][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.131255][   T10]      dst_init+0x84/0x4a0
[ 8746.131255][   T10]      dst_alloc+0x97/0x150
[ 8746.131255][   T10]      ip6_dst_alloc+0x23/0x90
[ 8746.131255][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8746.131255][   T10]      ip6_pol_route+0x56f/0x840
[ 8746.131255][   T10]      fib6_rule_lookup+0x334/0x630
[ 8746.131255][   T10]      ip6_route_output_flags+0x259/0x480
[ 8746.131255][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8746.131255][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8746.131255][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8746.131255][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8746.131255][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8746.131255][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.131255][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.131255][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.131255][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.131255][   T10] 
[ 8746.133274][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.133274][   T10]      netdev_get_by_index+0x5e/0x80
[ 8746.133274][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8746.133274][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8746.133274][   T10]      ip6_route_add+0x1c/0x140
[ 8746.133274][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8746.133274][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8746.133274][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8746.133274][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.133274][   T10]      netlink_rcv_skb+0x130/0x360
[ 8746.133274][   T10]      netlink_unicast+0x449/0x710
[ 8746.133274][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8746.133274][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.133274][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.133274][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.133274][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.133274][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.133274][   T10] 
[ 8746.134762][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8746.135300][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.135300][   T10]      netdev_get_by_index+0x5e/0x80
[ 8746.135300][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8746.135300][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8746.135300][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8746.135300][   T10]      ipv6_add_addr+0x411/0x2000
[ 8746.135300][   T10]      inet6_addr_add+0x30e/0xa40
[ 8746.135300][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8746.135300][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.135300][   T10]      netlink_rcv_skb+0x130/0x360
[ 8746.135300][   T10]      netlink_unicast+0x449/0x710
[ 8746.135300][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8746.135300][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.135300][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.135300][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.135300][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.135300][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.135300][   T10] 
[ 8746.135806][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8746.135806][T12167]      netdev_get_by_index+0x5e/0x80
[ 8746.135806][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8746.135806][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8746.135806][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8746.135806][T12167]      ipv6_add_addr+0x411/0x2000
[ 8746.135806][T12167]      inet6_addr_add+0x30e/0xa40
[ 8746.135806][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8746.135806][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.135806][T12167]      netlink_rcv_skb+0x130/0x360
[ 8746.135806][T12167]      netlink_unicast+0x449/0x710
[ 8746.135806][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8746.135806][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.135806][T12167]      ___sys_sendmsg+0xee/0x170
[ 8746.135806][T12167]      __sys_sendmsg+0xcd/0x170
[ 8746.135806][T12167]      do_syscall_64+0xc6/0x1e0
[ 8746.135806][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.135806][T12167] 
[ 8746.137709][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.137709][   T10]      netdev_get_by_index+0x5e/0x80
[ 8746.137709][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8746.137709][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8746.137709][   T10]      ip6_route_add+0x1c/0x140
[ 8746.137709][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8746.137709][   T10]      addrconf_add_dev+0xe2/0x170
[ 8746.137709][   T10]      inet6_addr_add+0x12f/0xa40
[ 8746.137709][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8746.137709][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.137709][   T10]      netlink_rcv_skb+0x130/0x360
[ 8746.137709][   T10]      netlink_unicast+0x449/0x710
[ 8746.137709][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8746.137709][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.137709][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.137709][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.137709][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.137709][   T10] 
[ 8746.141308][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8746.141308][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8746.141308][T12167]      ipv6_find_idev+0x102/0x170
[ 8746.141308][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8746.141308][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.141308][T12167]      netlink_rcv_skb+0x130/0x360
[ 8746.141308][T12167]      netlink_unicast+0x449/0x710
[ 8746.141308][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8746.141308][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.141308][T12167]      ___sys_sendmsg+0xee/0x170
[ 8746.141308][T12167]      __sys_sendmsg+0xcd/0x170
[ 8746.141308][T12167]      do_syscall_64+0xc6/0x1e0
[ 8746.141308][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.141308][T12167] 
[ 8746.143255][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.143255][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8746.143255][   T10]      ipv6_find_idev+0x102/0x170
[ 8746.143255][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8746.143255][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.143255][   T10]      netlink_rcv_skb+0x130/0x360
[ 8746.143255][   T10]      netlink_unicast+0x449/0x710
[ 8746.143255][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8746.143255][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.143255][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.143255][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.143255][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.143255][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.143255][   T10] 
[ 8746.146069][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8746.146069][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8746.146069][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8746.146069][T12167]      ipv6_find_idev+0x102/0x170
[ 8746.146069][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8746.146069][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.146069][T12167]      netlink_rcv_skb+0x130/0x360
[ 8746.146069][T12167]      netlink_unicast+0x449/0x710
[ 8746.146069][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8746.146069][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.146069][T12167]      ___sys_sendmsg+0xee/0x170
[ 8746.146069][T12167]      __sys_sendmsg+0xcd/0x170
[ 8746.146069][T12167]      do_syscall_64+0xc6/0x1e0
[ 8746.146069][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.146069][T12167] 
[ 8746.147591][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8746.147591][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8746.147591][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8746.147591][   T10]      ipv6_find_idev+0x102/0x170
[ 8746.147591][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8746.147591][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8746.147591][   T10]      netlink_rcv_skb+0x130/0x360
[ 8746.147591][   T10]      netlink_unicast+0x449/0x710
[ 8746.147591][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8746.147591][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8746.147591][   T10]      ___sys_sendmsg+0xee/0x170
[ 8746.147591][   T10]      __sys_sendmsg+0xcd/0x170
[ 8746.147591][   T10]      do_syscall_64+0xc6/0x1e0
[ 8746.147591][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8746.147591][   T10] 
[ 8756.390811][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8756.390823][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8756.391276][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8756.391276][T12167]      netdev_get_by_index+0x5e/0x80
[ 8756.391276][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8756.391276][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8756.391276][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8756.391276][T12167]      ipv6_add_addr+0x411/0x2000
[ 8756.391276][T12167]      inet6_addr_add+0x30e/0xa40
[ 8756.391276][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8756.391276][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.391276][T12167]      netlink_rcv_skb+0x130/0x360
[ 8756.391276][T12167]      netlink_unicast+0x449/0x710
[ 8756.391276][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8756.391276][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.391276][T12167]      ___sys_sendmsg+0xee/0x170
[ 8756.391276][T12167]      __sys_sendmsg+0xcd/0x170
[ 8756.391276][T12167]      do_syscall_64+0xc6/0x1e0
[ 8756.391276][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.391276][T12167] 
[ 8756.391492][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8756.391492][   T10]      dst_init+0x84/0x4a0
[ 8756.391492][   T10]      dst_alloc+0x97/0x150
[ 8756.391492][   T10]      ip6_dst_alloc+0x23/0x90
[ 8756.391492][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8756.391492][   T10]      ip6_pol_route+0x56f/0x840
[ 8756.391492][   T10]      fib6_rule_lookup+0x334/0x630
[ 8756.391492][   T10]      ip6_route_output_flags+0x259/0x480
[ 8756.391492][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8756.391492][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8756.391492][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8756.391492][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8756.391492][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.391492][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.391492][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.391492][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.391492][   T10] 
[ 8756.393695][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8756.393695][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8756.393695][T12167]      ipv6_find_idev+0x102/0x170
[ 8756.393695][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8756.393695][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.393695][T12167]      netlink_rcv_skb+0x130/0x360
[ 8756.393695][T12167]      netlink_unicast+0x449/0x710
[ 8756.393695][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8756.393695][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.393695][T12167]      ___sys_sendmsg+0xee/0x170
[ 8756.393695][T12167]      __sys_sendmsg+0xcd/0x170
[ 8756.393695][T12167]      do_syscall_64+0xc6/0x1e0
[ 8756.393695][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.393695][T12167] 
[ 8756.395619][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.395619][   T10]      dst_init+0x84/0x4a0
[ 8756.395619][   T10]      dst_alloc+0x97/0x150
[ 8756.395619][   T10]      ip6_dst_alloc+0x23/0x90
[ 8756.395619][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8756.395619][   T10]      ip6_pol_route+0x56f/0x840
[ 8756.395619][   T10]      fib6_rule_lookup+0x334/0x630
[ 8756.395619][   T10]      ip6_route_output_flags+0x259/0x480
[ 8756.395619][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8756.395619][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8756.395619][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8756.395619][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8756.395619][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8756.395619][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.395619][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.395619][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.395619][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.395619][   T10] 
[ 8756.397332][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8756.397332][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8756.397332][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8756.397332][T12167]      ipv6_find_idev+0x102/0x170
[ 8756.397332][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8756.397332][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.397332][T12167]      netlink_rcv_skb+0x130/0x360
[ 8756.397332][T12167]      netlink_unicast+0x449/0x710
[ 8756.397332][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8756.397332][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.397332][T12167]      ___sys_sendmsg+0xee/0x170
[ 8756.397332][T12167]      __sys_sendmsg+0xcd/0x170
[ 8756.397332][T12167]      do_syscall_64+0xc6/0x1e0
[ 8756.397332][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.397332][T12167] 
[ 8756.399324][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.399324][   T10]      dst_init+0x84/0x4a0
[ 8756.399324][   T10]      dst_alloc+0x97/0x150
[ 8756.399324][   T10]      ip6_dst_alloc+0x23/0x90
[ 8756.399324][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8756.399324][   T10]      ip6_pol_route+0x56f/0x840
[ 8756.399324][   T10]      fib6_rule_lookup+0x334/0x630
[ 8756.399324][   T10]      ip6_route_output_flags+0x259/0x480
[ 8756.399324][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8756.399324][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8756.399324][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8756.399324][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8756.399324][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8756.399324][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.399324][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.399324][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.399324][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.399324][   T10] 
[ 8756.403193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.403193][   T10]      netdev_get_by_index+0x5e/0x80
[ 8756.403193][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8756.403193][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8756.403193][   T10]      ip6_route_add+0x1c/0x140
[ 8756.403193][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8756.403193][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8756.403193][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8756.403193][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.403193][   T10]      netlink_rcv_skb+0x130/0x360
[ 8756.403193][   T10]      netlink_unicast+0x449/0x710
[ 8756.403193][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8756.403193][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.403193][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.403193][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.403193][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.403193][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.403193][   T10] 
[ 8756.405204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.405204][   T10]      netdev_get_by_index+0x5e/0x80
[ 8756.405204][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8756.405204][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8756.405204][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8756.405204][   T10]      ipv6_add_addr+0x411/0x2000
[ 8756.405204][   T10]      inet6_addr_add+0x30e/0xa40
[ 8756.405204][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8756.405204][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.405204][   T10]      netlink_rcv_skb+0x130/0x360
[ 8756.405204][   T10]      netlink_unicast+0x449/0x710
[ 8756.405204][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8756.405204][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.405204][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.405204][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.405204][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.405204][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.405204][   T10] 
[ 8756.407252][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.407252][   T10]      netdev_get_by_index+0x5e/0x80
[ 8756.407252][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8756.407252][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8756.407252][   T10]      ip6_route_add+0x1c/0x140
[ 8756.407252][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8756.407252][   T10]      addrconf_add_dev+0xe2/0x170
[ 8756.407252][   T10]      inet6_addr_add+0x12f/0xa40
[ 8756.407252][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8756.407252][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.407252][   T10]      netlink_rcv_skb+0x130/0x360
[ 8756.407252][   T10]      netlink_unicast+0x449/0x710
[ 8756.407252][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8756.407252][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.407252][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.407252][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.407252][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.407252][   T10] 
[ 8756.409221][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.409221][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8756.409221][   T10]      ipv6_find_idev+0x102/0x170
[ 8756.409221][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8756.409221][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.409221][   T10]      netlink_rcv_skb+0x130/0x360
[ 8756.409221][   T10]      netlink_unicast+0x449/0x710
[ 8756.409221][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8756.409221][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.409221][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.409221][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.409221][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.409221][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.409221][   T10] 
[ 8756.411137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8756.411137][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8756.411137][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8756.411137][   T10]      ipv6_find_idev+0x102/0x170
[ 8756.411137][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8756.411137][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8756.411137][   T10]      netlink_rcv_skb+0x130/0x360
[ 8756.411137][   T10]      netlink_unicast+0x449/0x710
[ 8756.411137][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8756.411137][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8756.411137][   T10]      ___sys_sendmsg+0xee/0x170
[ 8756.411137][   T10]      __sys_sendmsg+0xcd/0x170
[ 8756.411137][   T10]      do_syscall_64+0xc6/0x1e0
[ 8756.411137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8756.411137][   T10] 
[ 8766.638838][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8766.639267][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8766.639267][T12167]      netdev_get_by_index+0x5e/0x80
[ 8766.639267][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8766.639267][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8766.639267][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8766.639267][T12167]      ipv6_add_addr+0x411/0x2000
[ 8766.639267][T12167]      inet6_addr_add+0x30e/0xa40
[ 8766.639267][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8766.639267][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.639267][T12167]      netlink_rcv_skb+0x130/0x360
[ 8766.639267][T12167]      netlink_unicast+0x449/0x710
[ 8766.639267][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8766.639267][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.639267][T12167]      ___sys_sendmsg+0xee/0x170
[ 8766.639267][T12167]      __sys_sendmsg+0xcd/0x170
[ 8766.639267][T12167]      do_syscall_64+0xc6/0x1e0
[ 8766.639267][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.639267][T12167] 
[ 8766.641541][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8766.641541][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8766.641541][T12167]      ipv6_find_idev+0x102/0x170
[ 8766.641541][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8766.641541][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.641541][T12167]      netlink_rcv_skb+0x130/0x360
[ 8766.641541][T12167]      netlink_unicast+0x449/0x710
[ 8766.641541][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8766.641541][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.641541][T12167]      ___sys_sendmsg+0xee/0x170
[ 8766.641541][T12167]      __sys_sendmsg+0xcd/0x170
[ 8766.641541][T12167]      do_syscall_64+0xc6/0x1e0
[ 8766.641541][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.641541][T12167] 
[ 8766.643285][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8766.643285][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8766.643285][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8766.643285][T12167]      ipv6_find_idev+0x102/0x170
[ 8766.643285][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8766.643285][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.643285][T12167]      netlink_rcv_skb+0x130/0x360
[ 8766.643285][T12167]      netlink_unicast+0x449/0x710
[ 8766.643285][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8766.643285][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.643285][T12167]      ___sys_sendmsg+0xee/0x170
[ 8766.643285][T12167]      __sys_sendmsg+0xcd/0x170
[ 8766.643285][T12167]      do_syscall_64+0xc6/0x1e0
[ 8766.643285][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.643285][T12167] 
[ 8766.654716][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8766.655020][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8766.655020][   T10]      dst_init+0x84/0x4a0
[ 8766.655020][   T10]      dst_alloc+0x97/0x150
[ 8766.655020][   T10]      ip6_dst_alloc+0x23/0x90
[ 8766.655020][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8766.655020][   T10]      ip6_pol_route+0x56f/0x840
[ 8766.655020][   T10]      fib6_rule_lookup+0x334/0x630
[ 8766.655020][   T10]      ip6_route_output_flags+0x259/0x480
[ 8766.655020][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8766.655020][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8766.655020][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8766.655020][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8766.655020][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.655020][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.655020][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.655020][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.655020][   T10] 
[ 8766.656903][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.656903][   T10]      dst_init+0x84/0x4a0
[ 8766.656903][   T10]      dst_alloc+0x97/0x150
[ 8766.656903][   T10]      ip6_dst_alloc+0x23/0x90
[ 8766.656903][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8766.656903][   T10]      ip6_pol_route+0x56f/0x840
[ 8766.656903][   T10]      fib6_rule_lookup+0x334/0x630
[ 8766.656903][   T10]      ip6_route_output_flags+0x259/0x480
[ 8766.656903][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8766.656903][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8766.656903][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8766.656903][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8766.656903][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8766.656903][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.656903][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.656903][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.656903][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.656903][   T10] 
[ 8766.658908][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.658908][   T10]      dst_init+0x84/0x4a0
[ 8766.658908][   T10]      dst_alloc+0x97/0x150
[ 8766.658908][   T10]      ip6_dst_alloc+0x23/0x90
[ 8766.658908][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8766.658908][   T10]      ip6_pol_route+0x56f/0x840
[ 8766.658908][   T10]      fib6_rule_lookup+0x334/0x630
[ 8766.658908][   T10]      ip6_route_output_flags+0x259/0x480
[ 8766.658908][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8766.658908][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8766.658908][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8766.658908][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8766.658908][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8766.658908][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.658908][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.658908][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.658908][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.658908][   T10] 
[ 8766.660906][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.660906][   T10]      netdev_get_by_index+0x5e/0x80
[ 8766.660906][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8766.660906][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8766.660906][   T10]      ip6_route_add+0x1c/0x140
[ 8766.660906][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8766.660906][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8766.660906][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8766.660906][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.660906][   T10]      netlink_rcv_skb+0x130/0x360
[ 8766.660906][   T10]      netlink_unicast+0x449/0x710
[ 8766.660906][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8766.660906][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.660906][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.660906][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.660906][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.660906][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.660906][   T10] 
[ 8766.662912][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.662912][   T10]      netdev_get_by_index+0x5e/0x80
[ 8766.662912][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8766.662912][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8766.662912][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8766.662912][   T10]      ipv6_add_addr+0x411/0x2000
[ 8766.662912][   T10]      inet6_addr_add+0x30e/0xa40
[ 8766.662912][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8766.662912][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.662912][   T10]      netlink_rcv_skb+0x130/0x360
[ 8766.662912][   T10]      netlink_unicast+0x449/0x710
[ 8766.662912][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8766.662912][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.662912][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.662912][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.662912][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.662912][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.662912][   T10] 
[ 8766.664998][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.664998][   T10]      netdev_get_by_index+0x5e/0x80
[ 8766.664998][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8766.664998][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8766.664998][   T10]      ip6_route_add+0x1c/0x140
[ 8766.664998][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8766.664998][   T10]      addrconf_add_dev+0xe2/0x170
[ 8766.664998][   T10]      inet6_addr_add+0x12f/0xa40
[ 8766.664998][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8766.664998][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.664998][   T10]      netlink_rcv_skb+0x130/0x360
[ 8766.664998][   T10]      netlink_unicast+0x449/0x710
[ 8766.664998][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8766.664998][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.664998][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.664998][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.664998][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.664998][   T10] 
[ 8766.666963][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.666963][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8766.666963][   T10]      ipv6_find_idev+0x102/0x170
[ 8766.666963][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8766.666963][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.666963][   T10]      netlink_rcv_skb+0x130/0x360
[ 8766.666963][   T10]      netlink_unicast+0x449/0x710
[ 8766.666963][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8766.666963][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.666963][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.666963][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.666963][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.666963][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.666963][   T10] 
[ 8766.668506][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8766.668506][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8766.668506][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8766.668506][   T10]      ipv6_find_idev+0x102/0x170
[ 8766.668506][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8766.668506][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8766.668506][   T10]      netlink_rcv_skb+0x130/0x360
[ 8766.668506][   T10]      netlink_unicast+0x449/0x710
[ 8766.668506][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8766.668506][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8766.668506][   T10]      ___sys_sendmsg+0xee/0x170
[ 8766.668506][   T10]      __sys_sendmsg+0xcd/0x170
[ 8766.668506][   T10]      do_syscall_64+0xc6/0x1e0
[ 8766.668506][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8766.668506][   T10] 
[ 8776.894745][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8776.895185][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8776.895185][T12167]      netdev_get_by_index+0x5e/0x80
[ 8776.895185][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8776.895185][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8776.895185][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8776.895185][T12167]      ipv6_add_addr+0x411/0x2000
[ 8776.895185][T12167]      inet6_addr_add+0x30e/0xa40
[ 8776.895185][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8776.895185][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.895185][T12167]      netlink_rcv_skb+0x130/0x360
[ 8776.895185][T12167]      netlink_unicast+0x449/0x710
[ 8776.895185][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8776.895185][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.895185][T12167]      ___sys_sendmsg+0xee/0x170
[ 8776.895185][T12167]      __sys_sendmsg+0xcd/0x170
[ 8776.895185][T12167]      do_syscall_64+0xc6/0x1e0
[ 8776.895185][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.895185][T12167] 
[ 8776.897548][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8776.897548][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8776.897548][T12167]      ipv6_find_idev+0x102/0x170
[ 8776.897548][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8776.897548][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.897548][T12167]      netlink_rcv_skb+0x130/0x360
[ 8776.897548][T12167]      netlink_unicast+0x449/0x710
[ 8776.897548][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8776.897548][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.897548][T12167]      ___sys_sendmsg+0xee/0x170
[ 8776.897548][T12167]      __sys_sendmsg+0xcd/0x170
[ 8776.897548][T12167]      do_syscall_64+0xc6/0x1e0
[ 8776.897548][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.897548][T12167] 
[ 8776.899288][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8776.899288][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8776.899288][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8776.899288][T12167]      ipv6_find_idev+0x102/0x170
[ 8776.899288][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8776.899288][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.899288][T12167]      netlink_rcv_skb+0x130/0x360
[ 8776.899288][T12167]      netlink_unicast+0x449/0x710
[ 8776.899288][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8776.899288][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.899288][T12167]      ___sys_sendmsg+0xee/0x170
[ 8776.899288][T12167]      __sys_sendmsg+0xcd/0x170
[ 8776.899288][T12167]      do_syscall_64+0xc6/0x1e0
[ 8776.899288][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.899288][T12167] 
[ 8776.910805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8776.911179][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8776.911179][   T10]      dst_init+0x84/0x4a0
[ 8776.911179][   T10]      dst_alloc+0x97/0x150
[ 8776.911179][   T10]      ip6_dst_alloc+0x23/0x90
[ 8776.911179][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8776.911179][   T10]      ip6_pol_route+0x56f/0x840
[ 8776.911179][   T10]      fib6_rule_lookup+0x334/0x630
[ 8776.911179][   T10]      ip6_route_output_flags+0x259/0x480
[ 8776.911179][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8776.911179][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8776.911179][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8776.911179][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8776.911179][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.911179][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.911179][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.911179][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.911179][   T10] 
[ 8776.913106][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.913106][   T10]      dst_init+0x84/0x4a0
[ 8776.913106][   T10]      dst_alloc+0x97/0x150
[ 8776.913106][   T10]      ip6_dst_alloc+0x23/0x90
[ 8776.913106][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8776.913106][   T10]      ip6_pol_route+0x56f/0x840
[ 8776.913106][   T10]      fib6_rule_lookup+0x334/0x630
[ 8776.913106][   T10]      ip6_route_output_flags+0x259/0x480
[ 8776.913106][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8776.913106][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8776.913106][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8776.913106][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8776.913106][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8776.913106][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.913106][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.913106][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.913106][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.913106][   T10] 
[ 8776.915113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.915113][   T10]      dst_init+0x84/0x4a0
[ 8776.915113][   T10]      dst_alloc+0x97/0x150
[ 8776.915113][   T10]      ip6_dst_alloc+0x23/0x90
[ 8776.915113][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8776.915113][   T10]      ip6_pol_route+0x56f/0x840
[ 8776.915113][   T10]      fib6_rule_lookup+0x334/0x630
[ 8776.915113][   T10]      ip6_route_output_flags+0x259/0x480
[ 8776.915113][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8776.915113][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8776.915113][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8776.915113][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8776.915113][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8776.915113][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.915113][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.915113][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.915113][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.915113][   T10] 
[ 8776.917113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.917113][   T10]      netdev_get_by_index+0x5e/0x80
[ 8776.917113][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8776.917113][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8776.917113][   T10]      ip6_route_add+0x1c/0x140
[ 8776.917113][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8776.917113][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8776.917113][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8776.917113][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.917113][   T10]      netlink_rcv_skb+0x130/0x360
[ 8776.917113][   T10]      netlink_unicast+0x449/0x710
[ 8776.917113][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8776.917113][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.917113][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.917113][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.917113][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.917113][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.917113][   T10] 
[ 8776.919119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.919119][   T10]      netdev_get_by_index+0x5e/0x80
[ 8776.919119][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8776.919119][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8776.919119][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8776.919119][   T10]      ipv6_add_addr+0x411/0x2000
[ 8776.919119][   T10]      inet6_addr_add+0x30e/0xa40
[ 8776.919119][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8776.919119][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.919119][   T10]      netlink_rcv_skb+0x130/0x360
[ 8776.919119][   T10]      netlink_unicast+0x449/0x710
[ 8776.919119][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8776.919119][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.919119][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.919119][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.919119][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.919119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.919119][   T10] 
[ 8776.921117][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.921117][   T10]      netdev_get_by_index+0x5e/0x80
[ 8776.921117][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8776.921117][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8776.921117][   T10]      ip6_route_add+0x1c/0x140
[ 8776.921117][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8776.921117][   T10]      addrconf_add_dev+0xe2/0x170
[ 8776.921117][   T10]      inet6_addr_add+0x12f/0xa40
[ 8776.921117][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8776.921117][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.921117][   T10]      netlink_rcv_skb+0x130/0x360
[ 8776.921117][   T10]      netlink_unicast+0x449/0x710
[ 8776.921117][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8776.921117][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.921117][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.921117][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.921117][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.921117][   T10] 
[ 8776.923080][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.923080][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8776.923080][   T10]      ipv6_find_idev+0x102/0x170
[ 8776.923080][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8776.923080][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.923080][   T10]      netlink_rcv_skb+0x130/0x360
[ 8776.923080][   T10]      netlink_unicast+0x449/0x710
[ 8776.923080][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8776.923080][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.923080][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.923080][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.923080][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.923080][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.923080][   T10] 
[ 8776.924628][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8776.924628][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8776.924628][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8776.924628][   T10]      ipv6_find_idev+0x102/0x170
[ 8776.924628][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8776.924628][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8776.924628][   T10]      netlink_rcv_skb+0x130/0x360
[ 8776.924628][   T10]      netlink_unicast+0x449/0x710
[ 8776.924628][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8776.924628][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8776.924628][   T10]      ___sys_sendmsg+0xee/0x170
[ 8776.924628][   T10]      __sys_sendmsg+0xcd/0x170
[ 8776.924628][   T10]      do_syscall_64+0xc6/0x1e0
[ 8776.924628][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8776.924628][   T10] 
[ 8786.982810][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8786.982809][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8786.982931][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8786.982931][T12167]      netdev_get_by_index+0x5e/0x80
[ 8786.982931][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8786.982931][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8786.982931][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8786.982931][T12167]      ipv6_add_addr+0x411/0x2000
[ 8786.982931][T12167]      inet6_addr_add+0x30e/0xa40
[ 8786.982931][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8786.982931][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.982931][T12167]      netlink_rcv_skb+0x130/0x360
[ 8786.982931][T12167]      netlink_unicast+0x449/0x710
[ 8786.982931][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8786.982931][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.982931][T12167]      ___sys_sendmsg+0xee/0x170
[ 8786.982931][T12167]      __sys_sendmsg+0xcd/0x170
[ 8786.982931][T12167]      do_syscall_64+0xc6/0x1e0
[ 8786.982931][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.982931][T12167] 
[ 8786.983287][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8786.983287][   T10]      dst_init+0x84/0x4a0
[ 8786.983287][   T10]      dst_alloc+0x97/0x150
[ 8786.983287][   T10]      ip6_dst_alloc+0x23/0x90
[ 8786.983287][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8786.983287][   T10]      ip6_pol_route+0x56f/0x840
[ 8786.983287][   T10]      fib6_rule_lookup+0x334/0x630
[ 8786.983287][   T10]      ip6_route_output_flags+0x259/0x480
[ 8786.983287][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8786.983287][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8786.983287][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8786.983287][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8786.983287][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.983287][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.983287][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.983287][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.983287][   T10] 
[ 8786.983467][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8786.983467][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8786.983467][T12167]      ipv6_find_idev+0x102/0x170
[ 8786.983467][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8786.983467][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.983467][T12167]      netlink_rcv_skb+0x130/0x360
[ 8786.983467][T12167]      netlink_unicast+0x449/0x710
[ 8786.983467][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8786.983467][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.983467][T12167]      ___sys_sendmsg+0xee/0x170
[ 8786.983467][T12167]      __sys_sendmsg+0xcd/0x170
[ 8786.983467][T12167]      do_syscall_64+0xc6/0x1e0
[ 8786.983467][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.983467][T12167] 
[ 8786.985521][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8786.985521][   T10]      dst_init+0x84/0x4a0
[ 8786.985521][   T10]      dst_alloc+0x97/0x150
[ 8786.985521][   T10]      ip6_dst_alloc+0x23/0x90
[ 8786.985521][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8786.985521][   T10]      ip6_pol_route+0x56f/0x840
[ 8786.985521][   T10]      fib6_rule_lookup+0x334/0x630
[ 8786.985521][   T10]      ip6_route_output_flags+0x259/0x480
[ 8786.985521][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8786.985521][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8786.985521][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8786.985521][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8786.985521][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8786.985521][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.985521][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.985521][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.985521][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.985521][   T10] 
[ 8786.987612][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8786.987612][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8786.987612][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8786.987612][T12167]      ipv6_find_idev+0x102/0x170
[ 8786.987612][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8786.987612][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.987612][T12167]      netlink_rcv_skb+0x130/0x360
[ 8786.987612][T12167]      netlink_unicast+0x449/0x710
[ 8786.987612][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8786.987612][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.987612][T12167]      ___sys_sendmsg+0xee/0x170
[ 8786.987612][T12167]      __sys_sendmsg+0xcd/0x170
[ 8786.987612][T12167]      do_syscall_64+0xc6/0x1e0
[ 8786.987612][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.987612][T12167] 
[ 8786.989158][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8786.989158][   T10]      dst_init+0x84/0x4a0
[ 8786.989158][   T10]      dst_alloc+0x97/0x150
[ 8786.989158][   T10]      ip6_dst_alloc+0x23/0x90
[ 8786.989158][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8786.989158][   T10]      ip6_pol_route+0x56f/0x840
[ 8786.989158][   T10]      fib6_rule_lookup+0x334/0x630
[ 8786.989158][   T10]      ip6_route_output_flags+0x259/0x480
[ 8786.989158][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8786.989158][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8786.989158][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8786.989158][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8786.989158][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8786.989158][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.989158][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.989158][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.989158][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.989158][   T10] 
[ 8786.995096][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8786.995096][   T10]      netdev_get_by_index+0x5e/0x80
[ 8786.995096][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8786.995096][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8786.995096][   T10]      ip6_route_add+0x1c/0x140
[ 8786.995096][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8786.995096][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8786.995096][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8786.995096][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.995096][   T10]      netlink_rcv_skb+0x130/0x360
[ 8786.995096][   T10]      netlink_unicast+0x449/0x710
[ 8786.995096][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8786.995096][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.995096][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.995096][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.995096][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.995096][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.995096][   T10] 
[ 8786.997139][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8786.997139][   T10]      netdev_get_by_index+0x5e/0x80
[ 8786.997139][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8786.997139][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8786.997139][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8786.997139][   T10]      ipv6_add_addr+0x411/0x2000
[ 8786.997139][   T10]      inet6_addr_add+0x30e/0xa40
[ 8786.997139][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8786.997139][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.997139][   T10]      netlink_rcv_skb+0x130/0x360
[ 8786.997139][   T10]      netlink_unicast+0x449/0x710
[ 8786.997139][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8786.997139][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.997139][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.997139][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.997139][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.997139][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8786.997139][   T10] 
[ 8786.999176][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8786.999176][   T10]      netdev_get_by_index+0x5e/0x80
[ 8786.999176][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8786.999176][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8786.999176][   T10]      ip6_route_add+0x1c/0x140
[ 8786.999176][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8786.999176][   T10]      addrconf_add_dev+0xe2/0x170
[ 8786.999176][   T10]      inet6_addr_add+0x12f/0xa40
[ 8786.999176][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8786.999176][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8786.999176][   T10]      netlink_rcv_skb+0x130/0x360
[ 8786.999176][   T10]      netlink_unicast+0x449/0x710
[ 8786.999176][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8786.999176][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8786.999176][   T10]      ___sys_sendmsg+0xee/0x170
[ 8786.999176][   T10]      __sys_sendmsg+0xcd/0x170
[ 8786.999176][   T10]      do_syscall_64+0xc6/0x1e0
[ 8786.999176][   T10] 
[ 8787.001166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8787.001166][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8787.001166][   T10]      ipv6_find_idev+0x102/0x170
[ 8787.001166][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8787.001166][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8787.001166][   T10]      netlink_rcv_skb+0x130/0x360
[ 8787.001166][   T10]      netlink_unicast+0x449/0x710
[ 8787.001166][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8787.001166][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8787.001166][   T10]      ___sys_sendmsg+0xee/0x170
[ 8787.001166][   T10]      __sys_sendmsg+0xcd/0x170
[ 8787.001166][   T10]      do_syscall_64+0xc6/0x1e0
[ 8787.001166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8787.001166][   T10] 
[ 8787.002724][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8787.002724][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8787.002724][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8787.002724][   T10]      ipv6_find_idev+0x102/0x170
[ 8787.002724][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8787.002724][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8787.002724][   T10]      netlink_rcv_skb+0x130/0x360
[ 8787.002724][   T10]      netlink_unicast+0x449/0x710
[ 8787.002724][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8787.002724][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8787.002724][   T10]      ___sys_sendmsg+0xee/0x170
[ 8787.002724][   T10]      __sys_sendmsg+0xcd/0x170
[ 8787.002724][   T10]      do_syscall_64+0xc6/0x1e0
[ 8787.002724][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8787.002724][   T10] 
[ 8797.014747][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8797.015260][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8797.015260][   T10]      dst_init+0x84/0x4a0
[ 8797.015260][   T10]      dst_alloc+0x97/0x150
[ 8797.015260][   T10]      ip6_dst_alloc+0x23/0x90
[ 8797.015260][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8797.015260][   T10]      ip6_pol_route+0x56f/0x840
[ 8797.015260][   T10]      fib6_rule_lookup+0x334/0x630
[ 8797.015260][   T10]      ip6_route_output_flags+0x259/0x480
[ 8797.015260][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8797.015260][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8797.015260][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8797.015260][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8797.015260][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.015260][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.015260][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.015260][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.015260][   T10] 
[ 8797.017207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.017207][   T10]      dst_init+0x84/0x4a0
[ 8797.017207][   T10]      dst_alloc+0x97/0x150
[ 8797.017207][   T10]      ip6_dst_alloc+0x23/0x90
[ 8797.017207][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8797.017207][   T10]      ip6_pol_route+0x56f/0x840
[ 8797.017207][   T10]      fib6_rule_lookup+0x334/0x630
[ 8797.017207][   T10]      ip6_route_output_flags+0x259/0x480
[ 8797.017207][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8797.017207][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8797.017207][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8797.017207][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8797.017207][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8797.017207][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.017207][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.017207][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.017207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.017207][   T10] 
[ 8797.019239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.019239][   T10]      dst_init+0x84/0x4a0
[ 8797.019239][   T10]      dst_alloc+0x97/0x150
[ 8797.019239][   T10]      ip6_dst_alloc+0x23/0x90
[ 8797.019239][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8797.019239][   T10]      ip6_pol_route+0x56f/0x840
[ 8797.019239][   T10]      fib6_rule_lookup+0x334/0x630
[ 8797.019239][   T10]      ip6_route_output_flags+0x259/0x480
[ 8797.019239][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8797.019239][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8797.019239][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8797.019239][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8797.019239][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8797.019239][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.019239][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.019239][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.019239][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.019239][   T10] 
[ 8797.021285][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.021285][   T10]      netdev_get_by_index+0x5e/0x80
[ 8797.021285][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8797.021285][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8797.021285][   T10]      ip6_route_add+0x1c/0x140
[ 8797.021285][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8797.021285][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8797.021285][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8797.021285][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.021285][   T10]      netlink_rcv_skb+0x130/0x360
[ 8797.021285][   T10]      netlink_unicast+0x449/0x710
[ 8797.021285][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8797.021285][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.021285][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.021285][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.021285][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.021285][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.021285][   T10] 
[ 8797.023329][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.023329][   T10]      netdev_get_by_index+0x5e/0x80
[ 8797.023329][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8797.023329][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8797.023329][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8797.023329][   T10]      ipv6_add_addr+0x411/0x2000
[ 8797.023329][   T10]      inet6_addr_add+0x30e/0xa40
[ 8797.023329][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8797.023329][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.023329][   T10]      netlink_rcv_skb+0x130/0x360
[ 8797.023329][   T10]      netlink_unicast+0x449/0x710
[ 8797.023329][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8797.023329][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.023329][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.023329][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.023329][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.023329][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.023329][   T10] 
[ 8797.025361][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.025361][   T10]      netdev_get_by_index+0x5e/0x80
[ 8797.025361][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8797.025361][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8797.025361][   T10]      ip6_route_add+0x1c/0x140
[ 8797.025361][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8797.025361][   T10]      addrconf_add_dev+0xe2/0x170
[ 8797.025361][   T10]      inet6_addr_add+0x12f/0xa40
[ 8797.025361][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8797.025361][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.025361][   T10]      netlink_rcv_skb+0x130/0x360
[ 8797.025361][   T10]      netlink_unicast+0x449/0x710
[ 8797.025361][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8797.025361][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.025361][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.025361][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.025361][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.025361][   T10] 
[ 8797.027355][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.027355][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8797.027355][   T10]      ipv6_find_idev+0x102/0x170
[ 8797.027355][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8797.027355][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.027355][   T10]      netlink_rcv_skb+0x130/0x360
[ 8797.027355][   T10]      netlink_unicast+0x449/0x710
[ 8797.027355][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8797.027355][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.027355][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.027355][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.027355][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.027355][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.027355][   T10] 
[ 8797.028925][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8797.028925][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8797.028925][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8797.028925][   T10]      ipv6_find_idev+0x102/0x170
[ 8797.028925][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8797.028925][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.028925][   T10]      netlink_rcv_skb+0x130/0x360
[ 8797.028925][   T10]      netlink_unicast+0x449/0x710
[ 8797.028925][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8797.028925][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.028925][   T10]      ___sys_sendmsg+0xee/0x170
[ 8797.028925][   T10]      __sys_sendmsg+0xcd/0x170
[ 8797.028925][   T10]      do_syscall_64+0xc6/0x1e0
[ 8797.028925][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.028925][   T10] 
[ 8797.230833][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8797.231257][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8797.231257][T12167]      netdev_get_by_index+0x5e/0x80
[ 8797.231257][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8797.231257][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8797.231257][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8797.231257][T12167]      ipv6_add_addr+0x411/0x2000
[ 8797.231257][T12167]      inet6_addr_add+0x30e/0xa40
[ 8797.231257][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8797.231257][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.231257][T12167]      netlink_rcv_skb+0x130/0x360
[ 8797.231257][T12167]      netlink_unicast+0x449/0x710
[ 8797.231257][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8797.231257][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.231257][T12167]      ___sys_sendmsg+0xee/0x170
[ 8797.231257][T12167]      __sys_sendmsg+0xcd/0x170
[ 8797.231257][T12167]      do_syscall_64+0xc6/0x1e0
[ 8797.231257][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.231257][T12167] 
[ 8797.233544][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8797.233544][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8797.233544][T12167]      ipv6_find_idev+0x102/0x170
[ 8797.233544][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8797.233544][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.233544][T12167]      netlink_rcv_skb+0x130/0x360
[ 8797.233544][T12167]      netlink_unicast+0x449/0x710
[ 8797.233544][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8797.233544][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.233544][T12167]      ___sys_sendmsg+0xee/0x170
[ 8797.233544][T12167]      __sys_sendmsg+0xcd/0x170
[ 8797.233544][T12167]      do_syscall_64+0xc6/0x1e0
[ 8797.233544][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.233544][T12167] 
[ 8797.235279][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8797.235279][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8797.235279][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8797.235279][T12167]      ipv6_find_idev+0x102/0x170
[ 8797.235279][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8797.235279][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8797.235279][T12167]      netlink_rcv_skb+0x130/0x360
[ 8797.235279][T12167]      netlink_unicast+0x449/0x710
[ 8797.235279][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8797.235279][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8797.235279][T12167]      ___sys_sendmsg+0xee/0x170
[ 8797.235279][T12167]      __sys_sendmsg+0xcd/0x170
[ 8797.235279][T12167]      do_syscall_64+0xc6/0x1e0
[ 8797.235279][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8797.235279][T12167] 
[ 8807.270807][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8807.271270][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8807.271270][   T10]      dst_init+0x84/0x4a0
[ 8807.271270][   T10]      dst_alloc+0x97/0x150
[ 8807.271270][   T10]      ip6_dst_alloc+0x23/0x90
[ 8807.271270][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8807.271270][   T10]      ip6_pol_route+0x56f/0x840
[ 8807.271270][   T10]      fib6_rule_lookup+0x334/0x630
[ 8807.271270][   T10]      ip6_route_output_flags+0x259/0x480
[ 8807.271270][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8807.271270][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8807.271270][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8807.271270][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8807.271270][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.271270][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.271270][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.271270][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.271270][   T10] 
[ 8807.273204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.273204][   T10]      dst_init+0x84/0x4a0
[ 8807.273204][   T10]      dst_alloc+0x97/0x150
[ 8807.273204][   T10]      ip6_dst_alloc+0x23/0x90
[ 8807.273204][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8807.273204][   T10]      ip6_pol_route+0x56f/0x840
[ 8807.273204][   T10]      fib6_rule_lookup+0x334/0x630
[ 8807.273204][   T10]      ip6_route_output_flags+0x259/0x480
[ 8807.273204][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8807.273204][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8807.273204][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8807.273204][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8807.273204][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8807.273204][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.273204][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.273204][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.273204][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.273204][   T10] 
[ 8807.275251][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.275251][   T10]      dst_init+0x84/0x4a0
[ 8807.275251][   T10]      dst_alloc+0x97/0x150
[ 8807.275251][   T10]      ip6_dst_alloc+0x23/0x90
[ 8807.275251][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8807.275251][   T10]      ip6_pol_route+0x56f/0x840
[ 8807.275251][   T10]      fib6_rule_lookup+0x334/0x630
[ 8807.275251][   T10]      ip6_route_output_flags+0x259/0x480
[ 8807.275251][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8807.275251][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8807.275251][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8807.275251][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8807.275251][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8807.275251][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.275251][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.275251][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.275251][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.275251][   T10] 
[ 8807.277264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.277264][   T10]      netdev_get_by_index+0x5e/0x80
[ 8807.277264][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8807.277264][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8807.277264][   T10]      ip6_route_add+0x1c/0x140
[ 8807.277264][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8807.277264][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8807.277264][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8807.277264][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.277264][   T10]      netlink_rcv_skb+0x130/0x360
[ 8807.277264][   T10]      netlink_unicast+0x449/0x710
[ 8807.277264][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8807.277264][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.277264][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.277264][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.277264][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.277264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.277264][   T10] 
[ 8807.279284][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.279284][   T10]      netdev_get_by_index+0x5e/0x80
[ 8807.279284][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8807.279284][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8807.279284][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8807.279284][   T10]      ipv6_add_addr+0x411/0x2000
[ 8807.279284][   T10]      inet6_addr_add+0x30e/0xa40
[ 8807.279284][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8807.279284][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.279284][   T10]      netlink_rcv_skb+0x130/0x360
[ 8807.279284][   T10]      netlink_unicast+0x449/0x710
[ 8807.279284][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8807.279284][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.279284][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.279284][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.279284][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.279284][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.279284][   T10] 
[ 8807.281299][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.281299][   T10]      netdev_get_by_index+0x5e/0x80
[ 8807.281299][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8807.281299][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8807.281299][   T10]      ip6_route_add+0x1c/0x140
[ 8807.281299][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8807.281299][   T10]      addrconf_add_dev+0xe2/0x170
[ 8807.281299][   T10]      inet6_addr_add+0x12f/0xa40
[ 8807.281299][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8807.281299][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.281299][   T10]      netlink_rcv_skb+0x130/0x360
[ 8807.281299][   T10]      netlink_unicast+0x449/0x710
[ 8807.281299][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8807.281299][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.281299][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.281299][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.281299][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.281299][   T10] 
[ 8807.283264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.283264][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8807.283264][   T10]      ipv6_find_idev+0x102/0x170
[ 8807.283264][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8807.283264][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.283264][   T10]      netlink_rcv_skb+0x130/0x360
[ 8807.283264][   T10]      netlink_unicast+0x449/0x710
[ 8807.283264][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8807.283264][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.283264][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.283264][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.283264][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.283264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.283264][   T10] 
[ 8807.284810][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8807.284810][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8807.284810][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8807.284810][   T10]      ipv6_find_idev+0x102/0x170
[ 8807.284810][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8807.284810][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.284810][   T10]      netlink_rcv_skb+0x130/0x360
[ 8807.284810][   T10]      netlink_unicast+0x449/0x710
[ 8807.284810][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8807.284810][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.284810][   T10]      ___sys_sendmsg+0xee/0x170
[ 8807.284810][   T10]      __sys_sendmsg+0xcd/0x170
[ 8807.284810][   T10]      do_syscall_64+0xc6/0x1e0
[ 8807.284810][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.284810][   T10] 
[ 8807.479219][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8807.479637][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8807.479637][T12167]      netdev_get_by_index+0x5e/0x80
[ 8807.479637][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8807.479637][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8807.479637][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8807.479637][T12167]      ipv6_add_addr+0x411/0x2000
[ 8807.479637][T12167]      inet6_addr_add+0x30e/0xa40
[ 8807.479637][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8807.479637][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.479637][T12167]      netlink_rcv_skb+0x130/0x360
[ 8807.479637][T12167]      netlink_unicast+0x449/0x710
[ 8807.479637][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8807.479637][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.479637][T12167]      ___sys_sendmsg+0xee/0x170
[ 8807.479637][T12167]      __sys_sendmsg+0xcd/0x170
[ 8807.479637][T12167]      do_syscall_64+0xc6/0x1e0
[ 8807.479637][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.479637][T12167] 
[ 8807.481888][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8807.481888][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8807.481888][T12167]      ipv6_find_idev+0x102/0x170
[ 8807.481888][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8807.481888][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.481888][T12167]      netlink_rcv_skb+0x130/0x360
[ 8807.481888][T12167]      netlink_unicast+0x449/0x710
[ 8807.481888][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8807.481888][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.481888][T12167]      ___sys_sendmsg+0xee/0x170
[ 8807.481888][T12167]      __sys_sendmsg+0xcd/0x170
[ 8807.481888][T12167]      do_syscall_64+0xc6/0x1e0
[ 8807.481888][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.481888][T12167] 
[ 8807.483633][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8807.483633][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8807.483633][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8807.483633][T12167]      ipv6_find_idev+0x102/0x170
[ 8807.483633][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8807.483633][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8807.483633][T12167]      netlink_rcv_skb+0x130/0x360
[ 8807.483633][T12167]      netlink_unicast+0x449/0x710
[ 8807.483633][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8807.483633][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8807.483633][T12167]      ___sys_sendmsg+0xee/0x170
[ 8807.483633][T12167]      __sys_sendmsg+0xcd/0x170
[ 8807.483633][T12167]      do_syscall_64+0xc6/0x1e0
[ 8807.483633][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8807.483633][T12167] 
[ 8817.526841][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8817.527234][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8817.527234][   T10]      dst_init+0x84/0x4a0
[ 8817.527234][   T10]      dst_alloc+0x97/0x150
[ 8817.527234][   T10]      ip6_dst_alloc+0x23/0x90
[ 8817.527234][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8817.527234][   T10]      ip6_pol_route+0x56f/0x840
[ 8817.527234][   T10]      fib6_rule_lookup+0x334/0x630
[ 8817.527234][   T10]      ip6_route_output_flags+0x259/0x480
[ 8817.527234][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8817.527234][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8817.527234][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8817.527234][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8817.527234][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.527234][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.527234][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.527234][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.527234][   T10] 
[ 8817.529153][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.529153][   T10]      dst_init+0x84/0x4a0
[ 8817.529153][   T10]      dst_alloc+0x97/0x150
[ 8817.529153][   T10]      ip6_dst_alloc+0x23/0x90
[ 8817.529153][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8817.529153][   T10]      ip6_pol_route+0x56f/0x840
[ 8817.529153][   T10]      fib6_rule_lookup+0x334/0x630
[ 8817.529153][   T10]      ip6_route_output_flags+0x259/0x480
[ 8817.529153][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8817.529153][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8817.529153][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8817.529153][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8817.529153][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8817.529153][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.529153][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.529153][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.529153][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.529153][   T10] 
[ 8817.531175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.531175][   T10]      dst_init+0x84/0x4a0
[ 8817.531175][   T10]      dst_alloc+0x97/0x150
[ 8817.531175][   T10]      ip6_dst_alloc+0x23/0x90
[ 8817.531175][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8817.531175][   T10]      ip6_pol_route+0x56f/0x840
[ 8817.531175][   T10]      fib6_rule_lookup+0x334/0x630
[ 8817.531175][   T10]      ip6_route_output_flags+0x259/0x480
[ 8817.531175][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8817.531175][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8817.531175][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8817.531175][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8817.531175][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8817.531175][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.531175][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.531175][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.531175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.531175][   T10] 
[ 8817.533198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.533198][   T10]      netdev_get_by_index+0x5e/0x80
[ 8817.533198][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8817.533198][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8817.533198][   T10]      ip6_route_add+0x1c/0x140
[ 8817.533198][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8817.533198][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8817.533198][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8817.533198][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.533198][   T10]      netlink_rcv_skb+0x130/0x360
[ 8817.533198][   T10]      netlink_unicast+0x449/0x710
[ 8817.533198][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8817.533198][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.533198][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.533198][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.533198][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.533198][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.533198][   T10] 
[ 8817.535216][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.535216][   T10]      netdev_get_by_index+0x5e/0x80
[ 8817.535216][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8817.535216][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8817.535216][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8817.535216][   T10]      ipv6_add_addr+0x411/0x2000
[ 8817.535216][   T10]      inet6_addr_add+0x30e/0xa40
[ 8817.535216][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8817.535216][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.535216][   T10]      netlink_rcv_skb+0x130/0x360
[ 8817.535216][   T10]      netlink_unicast+0x449/0x710
[ 8817.535216][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8817.535216][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.535216][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.535216][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.535216][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.535216][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.535216][   T10] 
[ 8817.537233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.537233][   T10]      netdev_get_by_index+0x5e/0x80
[ 8817.537233][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8817.537233][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8817.537233][   T10]      ip6_route_add+0x1c/0x140
[ 8817.537233][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8817.537233][   T10]      addrconf_add_dev+0xe2/0x170
[ 8817.537233][   T10]      inet6_addr_add+0x12f/0xa40
[ 8817.537233][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8817.537233][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.537233][   T10]      netlink_rcv_skb+0x130/0x360
[ 8817.537233][   T10]      netlink_unicast+0x449/0x710
[ 8817.537233][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8817.537233][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.537233][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.537233][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.537233][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.537233][   T10] 
[ 8817.539209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.539209][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8817.539209][   T10]      ipv6_find_idev+0x102/0x170
[ 8817.539209][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8817.539209][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.539209][   T10]      netlink_rcv_skb+0x130/0x360
[ 8817.539209][   T10]      netlink_unicast+0x449/0x710
[ 8817.539209][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8817.539209][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.539209][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.539209][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.539209][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.539209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.539209][   T10] 
[ 8817.540754][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8817.540754][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8817.540754][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8817.540754][   T10]      ipv6_find_idev+0x102/0x170
[ 8817.540754][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8817.540754][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.540754][   T10]      netlink_rcv_skb+0x130/0x360
[ 8817.540754][   T10]      netlink_unicast+0x449/0x710
[ 8817.540754][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8817.540754][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.540754][   T10]      ___sys_sendmsg+0xee/0x170
[ 8817.540754][   T10]      __sys_sendmsg+0xcd/0x170
[ 8817.540754][   T10]      do_syscall_64+0xc6/0x1e0
[ 8817.540754][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.540754][   T10] 
[ 8817.734800][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8817.735220][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8817.735220][T12167]      netdev_get_by_index+0x5e/0x80
[ 8817.735220][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8817.735220][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8817.735220][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8817.735220][T12167]      ipv6_add_addr+0x411/0x2000
[ 8817.735220][T12167]      inet6_addr_add+0x30e/0xa40
[ 8817.735220][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8817.735220][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.735220][T12167]      netlink_rcv_skb+0x130/0x360
[ 8817.735220][T12167]      netlink_unicast+0x449/0x710
[ 8817.735220][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8817.735220][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.735220][T12167]      ___sys_sendmsg+0xee/0x170
[ 8817.735220][T12167]      __sys_sendmsg+0xcd/0x170
[ 8817.735220][T12167]      do_syscall_64+0xc6/0x1e0
[ 8817.735220][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.735220][T12167] 
[ 8817.737494][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8817.737494][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8817.737494][T12167]      ipv6_find_idev+0x102/0x170
[ 8817.737494][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8817.737494][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.737494][T12167]      netlink_rcv_skb+0x130/0x360
[ 8817.737494][T12167]      netlink_unicast+0x449/0x710
[ 8817.737494][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8817.737494][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.737494][T12167]      ___sys_sendmsg+0xee/0x170
[ 8817.737494][T12167]      __sys_sendmsg+0xcd/0x170
[ 8817.737494][T12167]      do_syscall_64+0xc6/0x1e0
[ 8817.737494][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.737494][T12167] 
[ 8817.739220][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8817.739220][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8817.739220][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8817.739220][T12167]      ipv6_find_idev+0x102/0x170
[ 8817.739220][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8817.739220][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8817.739220][T12167]      netlink_rcv_skb+0x130/0x360
[ 8817.739220][T12167]      netlink_unicast+0x449/0x710
[ 8817.739220][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8817.739220][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8817.739220][T12167]      ___sys_sendmsg+0xee/0x170
[ 8817.739220][T12167]      __sys_sendmsg+0xcd/0x170
[ 8817.739220][T12167]      do_syscall_64+0xc6/0x1e0
[ 8817.739220][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8817.739220][T12167] 
[ 8827.782830][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8827.783327][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8827.783327][   T10]      dst_init+0x84/0x4a0
[ 8827.783327][   T10]      dst_alloc+0x97/0x150
[ 8827.783327][   T10]      ip6_dst_alloc+0x23/0x90
[ 8827.783327][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8827.783327][   T10]      ip6_pol_route+0x56f/0x840
[ 8827.783327][   T10]      fib6_rule_lookup+0x334/0x630
[ 8827.783327][   T10]      ip6_route_output_flags+0x259/0x480
[ 8827.783327][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8827.783327][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8827.783327][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8827.783327][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8827.783327][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.783327][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.783327][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.783327][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.783327][   T10] 
[ 8827.785261][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.785261][   T10]      dst_init+0x84/0x4a0
[ 8827.785261][   T10]      dst_alloc+0x97/0x150
[ 8827.785261][   T10]      ip6_dst_alloc+0x23/0x90
[ 8827.785261][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8827.785261][   T10]      ip6_pol_route+0x56f/0x840
[ 8827.785261][   T10]      fib6_rule_lookup+0x334/0x630
[ 8827.785261][   T10]      ip6_route_output_flags+0x259/0x480
[ 8827.785261][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8827.785261][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8827.785261][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8827.785261][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8827.785261][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8827.785261][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.785261][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.785261][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.785261][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.785261][   T10] 
[ 8827.787272][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.787272][   T10]      dst_init+0x84/0x4a0
[ 8827.787272][   T10]      dst_alloc+0x97/0x150
[ 8827.787272][   T10]      ip6_dst_alloc+0x23/0x90
[ 8827.787272][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8827.787272][   T10]      ip6_pol_route+0x56f/0x840
[ 8827.787272][   T10]      fib6_rule_lookup+0x334/0x630
[ 8827.787272][   T10]      ip6_route_output_flags+0x259/0x480
[ 8827.787272][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8827.787272][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8827.787272][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8827.787272][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8827.787272][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8827.787272][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.787272][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.787272][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.787272][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.787272][   T10] 
[ 8827.789290][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.789290][   T10]      netdev_get_by_index+0x5e/0x80
[ 8827.789290][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8827.789290][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8827.789290][   T10]      ip6_route_add+0x1c/0x140
[ 8827.789290][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8827.789290][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8827.789290][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8827.789290][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.789290][   T10]      netlink_rcv_skb+0x130/0x360
[ 8827.789290][   T10]      netlink_unicast+0x449/0x710
[ 8827.789290][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8827.789290][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.789290][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.789290][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.789290][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.789290][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.789290][   T10] 
[ 8827.791308][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.791308][   T10]      netdev_get_by_index+0x5e/0x80
[ 8827.791308][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8827.791308][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8827.791308][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8827.791308][   T10]      ipv6_add_addr+0x411/0x2000
[ 8827.791308][   T10]      inet6_addr_add+0x30e/0xa40
[ 8827.791308][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8827.791308][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.791308][   T10]      netlink_rcv_skb+0x130/0x360
[ 8827.791308][   T10]      netlink_unicast+0x449/0x710
[ 8827.791308][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8827.791308][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.791308][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.791308][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.791308][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.791308][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.791308][   T10] 
[ 8827.793312][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.793312][   T10]      netdev_get_by_index+0x5e/0x80
[ 8827.793312][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8827.793312][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8827.793312][   T10]      ip6_route_add+0x1c/0x140
[ 8827.793312][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8827.793312][   T10]      addrconf_add_dev+0xe2/0x170
[ 8827.793312][   T10]      inet6_addr_add+0x12f/0xa40
[ 8827.793312][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8827.793312][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.793312][   T10]      netlink_rcv_skb+0x130/0x360
[ 8827.793312][   T10]      netlink_unicast+0x449/0x710
[ 8827.793312][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8827.793312][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.793312][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.793312][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.793312][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.793312][   T10] 
[ 8827.795300][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.795300][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8827.795300][   T10]      ipv6_find_idev+0x102/0x170
[ 8827.795300][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8827.795300][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.795300][   T10]      netlink_rcv_skb+0x130/0x360
[ 8827.795300][   T10]      netlink_unicast+0x449/0x710
[ 8827.795300][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8827.795300][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.795300][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.795300][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.795300][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.795300][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.795300][   T10] 
[ 8827.797222][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8827.797222][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8827.797222][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8827.797222][   T10]      ipv6_find_idev+0x102/0x170
[ 8827.797222][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8827.797222][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.797222][   T10]      netlink_rcv_skb+0x130/0x360
[ 8827.797222][   T10]      netlink_unicast+0x449/0x710
[ 8827.797222][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8827.797222][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.797222][   T10]      ___sys_sendmsg+0xee/0x170
[ 8827.797222][   T10]      __sys_sendmsg+0xcd/0x170
[ 8827.797222][   T10]      do_syscall_64+0xc6/0x1e0
[ 8827.797222][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.797222][   T10] 
[ 8827.982814][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8827.983247][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8827.983247][T12167]      netdev_get_by_index+0x5e/0x80
[ 8827.983247][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8827.983247][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8827.983247][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8827.983247][T12167]      ipv6_add_addr+0x411/0x2000
[ 8827.983247][T12167]      inet6_addr_add+0x30e/0xa40
[ 8827.983247][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8827.983247][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.983247][T12167]      netlink_rcv_skb+0x130/0x360
[ 8827.983247][T12167]      netlink_unicast+0x449/0x710
[ 8827.983247][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8827.983247][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.983247][T12167]      ___sys_sendmsg+0xee/0x170
[ 8827.983247][T12167]      __sys_sendmsg+0xcd/0x170
[ 8827.983247][T12167]      do_syscall_64+0xc6/0x1e0
[ 8827.983247][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.983247][T12167] 
[ 8827.985509][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8827.985509][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8827.985509][T12167]      ipv6_find_idev+0x102/0x170
[ 8827.985509][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8827.985509][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.985509][T12167]      netlink_rcv_skb+0x130/0x360
[ 8827.985509][T12167]      netlink_unicast+0x449/0x710
[ 8827.985509][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8827.985509][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.985509][T12167]      ___sys_sendmsg+0xee/0x170
[ 8827.985509][T12167]      __sys_sendmsg+0xcd/0x170
[ 8827.985509][T12167]      do_syscall_64+0xc6/0x1e0
[ 8827.985509][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.985509][T12167] 
[ 8827.987243][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8827.987243][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8827.987243][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8827.987243][T12167]      ipv6_find_idev+0x102/0x170
[ 8827.987243][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8827.987243][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8827.987243][T12167]      netlink_rcv_skb+0x130/0x360
[ 8827.987243][T12167]      netlink_unicast+0x449/0x710
[ 8827.987243][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8827.987243][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8827.987243][T12167]      ___sys_sendmsg+0xee/0x170
[ 8827.987243][T12167]      __sys_sendmsg+0xcd/0x170
[ 8827.987243][T12167]      do_syscall_64+0xc6/0x1e0
[ 8827.987243][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8827.987243][T12167] 
[ 8837.990811][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8837.991213][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8837.991247][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8837.991247][T12167]      netdev_get_by_index+0x5e/0x80
[ 8837.991247][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8837.991247][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8837.991247][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8837.991247][T12167]      ipv6_add_addr+0x411/0x2000
[ 8837.991247][T12167]      inet6_addr_add+0x30e/0xa40
[ 8837.991247][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8837.991247][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8837.991247][T12167]      netlink_rcv_skb+0x130/0x360
[ 8837.991247][T12167]      netlink_unicast+0x449/0x710
[ 8837.991247][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8837.991247][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8837.991247][T12167]      ___sys_sendmsg+0xee/0x170
[ 8837.991247][T12167]      __sys_sendmsg+0xcd/0x170
[ 8837.991247][T12167]      do_syscall_64+0xc6/0x1e0
[ 8837.991247][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.991247][T12167] 
[ 8837.991525][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8837.991525][   T10]      dst_init+0x84/0x4a0
[ 8837.991525][   T10]      dst_alloc+0x97/0x150
[ 8837.991525][   T10]      ip6_dst_alloc+0x23/0x90
[ 8837.991525][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8837.991525][   T10]      ip6_pol_route+0x56f/0x840
[ 8837.991525][   T10]      fib6_rule_lookup+0x334/0x630
[ 8837.991525][   T10]      ip6_route_output_flags+0x259/0x480
[ 8837.991525][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8837.991525][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8837.991525][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8837.991525][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8837.991525][   T10]      ___sys_sendmsg+0xee/0x170
[ 8837.991525][   T10]      __sys_sendmsg+0xcd/0x170
[ 8837.991525][   T10]      do_syscall_64+0xc6/0x1e0
[ 8837.991525][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.991525][   T10] 
[ 8837.993701][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8837.993701][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8837.993701][T12167]      ipv6_find_idev+0x102/0x170
[ 8837.993701][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8837.993701][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8837.993701][T12167]      netlink_rcv_skb+0x130/0x360
[ 8837.993701][T12167]      netlink_unicast+0x449/0x710
[ 8837.993701][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8837.993701][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8837.993701][T12167]      ___sys_sendmsg+0xee/0x170
[ 8837.993701][T12167]      __sys_sendmsg+0xcd/0x170
[ 8837.993701][T12167]      do_syscall_64+0xc6/0x1e0
[ 8837.993701][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.993701][T12167] 
[ 8837.995590][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8837.995590][   T10]      dst_init+0x84/0x4a0
[ 8837.995590][   T10]      dst_alloc+0x97/0x150
[ 8837.995590][   T10]      ip6_dst_alloc+0x23/0x90
[ 8837.995590][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8837.995590][   T10]      ip6_pol_route+0x56f/0x840
[ 8837.995590][   T10]      fib6_rule_lookup+0x334/0x630
[ 8837.995590][   T10]      ip6_route_output_flags+0x259/0x480
[ 8837.995590][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8837.995590][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8837.995590][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8837.995590][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8837.995590][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8837.995590][   T10]      ___sys_sendmsg+0xee/0x170
[ 8837.995590][   T10]      __sys_sendmsg+0xcd/0x170
[ 8837.995590][   T10]      do_syscall_64+0xc6/0x1e0
[ 8837.995590][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.995590][   T10] 
[ 8837.997304][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8837.997304][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8837.997304][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8837.997304][T12167]      ipv6_find_idev+0x102/0x170
[ 8837.997304][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8837.997304][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8837.997304][T12167]      netlink_rcv_skb+0x130/0x360
[ 8837.997304][T12167]      netlink_unicast+0x449/0x710
[ 8837.997304][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8837.997304][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8837.997304][T12167]      ___sys_sendmsg+0xee/0x170
[ 8837.997304][T12167]      __sys_sendmsg+0xcd/0x170
[ 8837.997304][T12167]      do_syscall_64+0xc6/0x1e0
[ 8837.997304][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.997304][T12167] 
[ 8837.999319][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8837.999319][   T10]      dst_init+0x84/0x4a0
[ 8837.999319][   T10]      dst_alloc+0x97/0x150
[ 8837.999319][   T10]      ip6_dst_alloc+0x23/0x90
[ 8837.999319][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8837.999319][   T10]      ip6_pol_route+0x56f/0x840
[ 8837.999319][   T10]      fib6_rule_lookup+0x334/0x630
[ 8837.999319][   T10]      ip6_route_output_flags+0x259/0x480
[ 8837.999319][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8837.999319][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8837.999319][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8837.999319][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8837.999319][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8837.999319][   T10]      ___sys_sendmsg+0xee/0x170
[ 8837.999319][   T10]      __sys_sendmsg+0xcd/0x170
[ 8837.999319][   T10]      do_syscall_64+0xc6/0x1e0
[ 8837.999319][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8837.999319][   T10] 
[ 8838.003176][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8838.003176][   T10]      netdev_get_by_index+0x5e/0x80
[ 8838.003176][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8838.003176][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8838.003176][   T10]      ip6_route_add+0x1c/0x140
[ 8838.003176][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8838.003176][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8838.003176][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8838.003176][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8838.003176][   T10]      netlink_rcv_skb+0x130/0x360
[ 8838.003176][   T10]      netlink_unicast+0x449/0x710
[ 8838.003176][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8838.003176][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8838.003176][   T10]      ___sys_sendmsg+0xee/0x170
[ 8838.003176][   T10]      __sys_sendmsg+0xcd/0x170
[ 8838.003176][   T10]      do_syscall_64+0xc6/0x1e0
[ 8838.003176][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8838.003176][   T10] 
[ 8838.005186][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8838.005186][   T10]      netdev_get_by_index+0x5e/0x80
[ 8838.005186][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8838.005186][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8838.005186][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8838.005186][   T10]      ipv6_add_addr+0x411/0x2000
[ 8838.005186][   T10]      inet6_addr_add+0x30e/0xa40
[ 8838.005186][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8838.005186][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8838.005186][   T10]      netlink_rcv_skb+0x130/0x360
[ 8838.005186][   T10]      netlink_unicast+0x449/0x710
[ 8838.005186][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8838.005186][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8838.005186][   T10]      ___sys_sendmsg+0xee/0x170
[ 8838.005186][   T10]      __sys_sendmsg+0xcd/0x170
[ 8838.005186][   T10]      do_syscall_64+0xc6/0x1e0
[ 8838.005186][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8838.005186][   T10] 
[ 8838.007190][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8838.007190][   T10]      netdev_get_by_index+0x5e/0x80
[ 8838.007190][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8838.007190][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8838.007190][   T10]      ip6_route_add+0x1c/0x140
[ 8838.007190][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8838.007190][   T10]      addrconf_add_dev+0xe2/0x170
[ 8838.007190][   T10]      inet6_addr_add+0x12f/0xa40
[ 8838.007190][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8838.007190][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8838.007190][   T10]      netlink_rcv_skb+0x130/0x360
[ 8838.007190][   T10]      netlink_unicast+0x449/0x710
[ 8838.007190][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8838.007190][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8838.007190][   T10]      ___sys_sendmsg+0xee/0x170
[ 8838.007190][   T10]      __sys_sendmsg+0xcd/0x170
[ 8838.007190][   T10]      do_syscall_64+0xc6/0x1e0
[ 8838.007190][   T10] 
[ 8838.009159][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8838.009159][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8838.009159][   T10]      ipv6_find_idev+0x102/0x170
[ 8838.009159][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8838.009159][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8838.009159][   T10]      netlink_rcv_skb+0x130/0x360
[ 8838.009159][   T10]      netlink_unicast+0x449/0x710
[ 8838.009159][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8838.009159][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8838.009159][   T10]      ___sys_sendmsg+0xee/0x170
[ 8838.009159][   T10]      __sys_sendmsg+0xcd/0x170
[ 8838.009159][   T10]      do_syscall_64+0xc6/0x1e0
[ 8838.009159][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8838.009159][   T10] 
[ 8838.010716][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8838.010716][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8838.010716][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8838.010716][   T10]      ipv6_find_idev+0x102/0x170
[ 8838.010716][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8838.010716][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8838.010716][   T10]      netlink_rcv_skb+0x130/0x360
[ 8838.010716][   T10]      netlink_unicast+0x449/0x710
[ 8838.010716][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8838.010716][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8838.010716][   T10]      ___sys_sendmsg+0xee/0x170
[ 8838.010716][   T10]      __sys_sendmsg+0xcd/0x170
[ 8838.010716][   T10]      do_syscall_64+0xc6/0x1e0
[ 8838.010716][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8838.010716][   T10] 
[ 8848.054846][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8848.055286][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8848.055286][T12167]      netdev_get_by_index+0x5e/0x80
[ 8848.055286][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8848.055286][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8848.055286][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8848.055286][T12167]      ipv6_add_addr+0x411/0x2000
[ 8848.055286][T12167]      inet6_addr_add+0x30e/0xa40
[ 8848.055286][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8848.055286][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.055286][T12167]      netlink_rcv_skb+0x130/0x360
[ 8848.055286][T12167]      netlink_unicast+0x449/0x710
[ 8848.055286][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8848.055286][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.055286][T12167]      ___sys_sendmsg+0xee/0x170
[ 8848.055286][T12167]      __sys_sendmsg+0xcd/0x170
[ 8848.055286][T12167]      do_syscall_64+0xc6/0x1e0
[ 8848.055286][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.055286][T12167] 
[ 8848.057580][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8848.057580][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8848.057580][T12167]      ipv6_find_idev+0x102/0x170
[ 8848.057580][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8848.057580][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.057580][T12167]      netlink_rcv_skb+0x130/0x360
[ 8848.057580][T12167]      netlink_unicast+0x449/0x710
[ 8848.057580][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8848.057580][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.057580][T12167]      ___sys_sendmsg+0xee/0x170
[ 8848.057580][T12167]      __sys_sendmsg+0xcd/0x170
[ 8848.057580][T12167]      do_syscall_64+0xc6/0x1e0
[ 8848.057580][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.057580][T12167] 
[ 8848.059326][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8848.059326][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8848.059326][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8848.059326][T12167]      ipv6_find_idev+0x102/0x170
[ 8848.059326][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8848.059326][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.059326][T12167]      netlink_rcv_skb+0x130/0x360
[ 8848.059326][T12167]      netlink_unicast+0x449/0x710
[ 8848.059326][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8848.059326][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.059326][T12167]      ___sys_sendmsg+0xee/0x170
[ 8848.059326][T12167]      __sys_sendmsg+0xcd/0x170
[ 8848.059326][T12167]      do_syscall_64+0xc6/0x1e0
[ 8848.059326][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.059326][T12167] 
[ 8848.062734][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8848.063042][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8848.063042][   T10]      dst_init+0x84/0x4a0
[ 8848.063042][   T10]      dst_alloc+0x97/0x150
[ 8848.063042][   T10]      ip6_dst_alloc+0x23/0x90
[ 8848.063042][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8848.063042][   T10]      ip6_pol_route+0x56f/0x840
[ 8848.063042][   T10]      fib6_rule_lookup+0x334/0x630
[ 8848.063042][   T10]      ip6_route_output_flags+0x259/0x480
[ 8848.063042][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8848.063042][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8848.063042][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8848.063042][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8848.063042][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.063042][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.063042][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.063042][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.063042][   T10] 
[ 8848.064978][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.064978][   T10]      dst_init+0x84/0x4a0
[ 8848.064978][   T10]      dst_alloc+0x97/0x150
[ 8848.064978][   T10]      ip6_dst_alloc+0x23/0x90
[ 8848.064978][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8848.064978][   T10]      ip6_pol_route+0x56f/0x840
[ 8848.064978][   T10]      fib6_rule_lookup+0x334/0x630
[ 8848.064978][   T10]      ip6_route_output_flags+0x259/0x480
[ 8848.064978][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8848.064978][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8848.064978][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8848.064978][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8848.064978][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8848.064978][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.064978][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.064978][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.064978][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.064978][   T10] 
[ 8848.067020][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.067020][   T10]      dst_init+0x84/0x4a0
[ 8848.067020][   T10]      dst_alloc+0x97/0x150
[ 8848.067020][   T10]      ip6_dst_alloc+0x23/0x90
[ 8848.067020][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8848.067020][   T10]      ip6_pol_route+0x56f/0x840
[ 8848.067020][   T10]      fib6_rule_lookup+0x334/0x630
[ 8848.067020][   T10]      ip6_route_output_flags+0x259/0x480
[ 8848.067020][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8848.067020][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8848.067020][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8848.067020][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8848.067020][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8848.067020][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.067020][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.067020][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.067020][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.067020][   T10] 
[ 8848.069047][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.069047][   T10]      netdev_get_by_index+0x5e/0x80
[ 8848.069047][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8848.069047][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8848.069047][   T10]      ip6_route_add+0x1c/0x140
[ 8848.069047][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8848.069047][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8848.069047][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8848.069047][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.069047][   T10]      netlink_rcv_skb+0x130/0x360
[ 8848.069047][   T10]      netlink_unicast+0x449/0x710
[ 8848.069047][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8848.069047][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.069047][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.069047][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.069047][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.069047][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.069047][   T10] 
[ 8848.071077][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.071077][   T10]      netdev_get_by_index+0x5e/0x80
[ 8848.071077][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8848.071077][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8848.071077][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8848.071077][   T10]      ipv6_add_addr+0x411/0x2000
[ 8848.071077][   T10]      inet6_addr_add+0x30e/0xa40
[ 8848.071077][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8848.071077][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.071077][   T10]      netlink_rcv_skb+0x130/0x360
[ 8848.071077][   T10]      netlink_unicast+0x449/0x710
[ 8848.071077][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8848.071077][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.071077][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.071077][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.071077][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.071077][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.071077][   T10] 
[ 8848.073113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.073113][   T10]      netdev_get_by_index+0x5e/0x80
[ 8848.073113][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8848.073113][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8848.073113][   T10]      ip6_route_add+0x1c/0x140
[ 8848.073113][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8848.073113][   T10]      addrconf_add_dev+0xe2/0x170
[ 8848.073113][   T10]      inet6_addr_add+0x12f/0xa40
[ 8848.073113][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8848.073113][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.073113][   T10]      netlink_rcv_skb+0x130/0x360
[ 8848.073113][   T10]      netlink_unicast+0x449/0x710
[ 8848.073113][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8848.073113][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.073113][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.073113][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.073113][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.073113][   T10] 
[ 8848.075114][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.075114][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8848.075114][   T10]      ipv6_find_idev+0x102/0x170
[ 8848.075114][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8848.075114][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.075114][   T10]      netlink_rcv_skb+0x130/0x360
[ 8848.075114][   T10]      netlink_unicast+0x449/0x710
[ 8848.075114][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8848.075114][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.075114][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.075114][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.075114][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.075114][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.075114][   T10] 
[ 8848.076671][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8848.076671][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8848.076671][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8848.076671][   T10]      ipv6_find_idev+0x102/0x170
[ 8848.076671][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8848.076671][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8848.076671][   T10]      netlink_rcv_skb+0x130/0x360
[ 8848.076671][   T10]      netlink_unicast+0x449/0x710
[ 8848.076671][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8848.076671][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8848.076671][   T10]      ___sys_sendmsg+0xee/0x170
[ 8848.076671][   T10]      __sys_sendmsg+0xcd/0x170
[ 8848.076671][   T10]      do_syscall_64+0xc6/0x1e0
[ 8848.076671][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.076671][   T10] 
[ 8848.678763][   T42] INFO: task modprobe:12646 blocked for more than 122 seconds.
[ 8848.679227][   T42]       Not tainted 6.8.0-virtme #1
[ 8848.679665][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 8848.679889][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 8848.680149][   T42] Call Trace:
[ 8848.680258][   T42]  <TASK>
[ 8848.680333][   T42]  __schedule+0x705/0x1ac0
[ 8848.680470][   T42]  ? __pfx___schedule+0x10/0x10
[ 8848.680598][   T42]  ? schedule+0x1a5/0x210
[ 8848.680711][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 8848.680843][   T42]  ? mark_lock+0x38/0x3e0
[ 8848.680937][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 8848.681063][   T42]  ? schedule+0x1a5/0x210
[ 8848.681324][   T42]  schedule+0xdf/0x210
[ 8848.681420][   T42]  schedule_preempt_disabled+0x15/0x30
[ 8848.681549][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 8848.681677][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 8848.681842][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 8848.681967][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 8848.682100][   T42]  ? lock_acquire+0x1c1/0x220
[ 8848.682222][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 8848.682351][   T42]  down_write+0x1c9/0x200
[ 8848.682452][   T42]  ? __pfx_down_write+0x10/0x10
[ 8848.682575][   T42]  ? __pfx__printk+0x10/0x10
[ 8848.682714][   T42]  ? __pfx___lock_release+0x10/0x10
[ 8848.682841][   T42]  register_pernet_subsys+0x1a/0x50
[ 8848.682967][   T42]  tcf_register_action+0xa3/0x600
[ 8848.683092][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 8848.683251][   T42]  do_one_initcall+0xc8/0x3f0
[ 8848.683378][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 8848.683508][   T42]  ? __create_object+0x5e/0xb0
[ 8848.683637][   T42]  ? kasan_unpoison+0x27/0x60
[ 8848.683776][   T42]  do_init_module+0x233/0x740
[ 8848.683910][   T42]  load_module+0x16b5/0x2350
[ 8848.684056][   T42]  ? __pfx_load_module+0x10/0x10
[ 8848.684179][   T42]  ? kernel_read_file+0x3d2/0x520
[ 8848.684307][   T42]  ? kernel_read_file+0x300/0x520
[ 8848.684433][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 8848.684567][   T42]  ? init_module_from_file+0xd2/0x130
[ 8848.684704][   T42]  init_module_from_file+0xd2/0x130
[ 8848.684828][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 8848.684981][   T42]  ? __lock_release+0x103/0x460
[ 8848.685103][   T42]  ? idempotent_init_module+0x32a/0x620
[ 8848.685238][   T42]  ? idempotent_init_module+0x32a/0x620
[ 8848.685364][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 8848.685490][   T42]  idempotent_init_module+0x342/0x620
[ 8848.685618][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 8848.685800][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 8848.685936][   T42]  do_syscall_64+0xc6/0x1e0
[ 8848.686062][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8848.686217][   T42] RIP: 0033:0x7fac120f1e5d
[ 8848.686352][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 8848.686562][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 8848.686772][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 8848.686962][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 8848.687148][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 8848.687332][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 8848.687531][   T42]  </TASK>
[ 8848.687631][   T42] 
[ 8848.687631][   T42] Showing all locks held in the system:
[ 8848.687822][   T42] 3 locks held by kworker/u16:0/10:
[ 8848.687945][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 8848.688198][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 8848.688414][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 8848.688641][   T42] 1 lock held by khungtaskd/42:
[ 8848.688765][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 8848.688984][   T42] 2 locks held by kworker/u17:1/44:
[ 8848.689101][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 8848.689349][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 8848.689632][   T42] 1 lock held by modprobe/12646:
[ 8848.689758][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 8848.690001][   T42] 
[ 8848.690066][   T42] =============================================
[ 8848.690066][   T42] 
[ 8858.062827][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8858.063314][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8858.063314][T12167]      netdev_get_by_index+0x5e/0x80
[ 8858.063314][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8858.063314][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8858.063314][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8858.063314][T12167]      ipv6_add_addr+0x411/0x2000
[ 8858.063314][T12167]      inet6_addr_add+0x30e/0xa40
[ 8858.063314][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8858.063314][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.063314][T12167]      netlink_rcv_skb+0x130/0x360
[ 8858.063314][T12167]      netlink_unicast+0x449/0x710
[ 8858.063314][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8858.063314][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.063314][T12167]      ___sys_sendmsg+0xee/0x170
[ 8858.063314][T12167]      __sys_sendmsg+0xcd/0x170
[ 8858.063314][T12167]      do_syscall_64+0xc6/0x1e0
[ 8858.063314][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.063314][T12167] 
[ 8858.065598][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8858.065598][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8858.065598][T12167]      ipv6_find_idev+0x102/0x170
[ 8858.065598][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8858.065598][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.065598][T12167]      netlink_rcv_skb+0x130/0x360
[ 8858.065598][T12167]      netlink_unicast+0x449/0x710
[ 8858.065598][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8858.065598][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.065598][T12167]      ___sys_sendmsg+0xee/0x170
[ 8858.065598][T12167]      __sys_sendmsg+0xcd/0x170
[ 8858.065598][T12167]      do_syscall_64+0xc6/0x1e0
[ 8858.065598][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.065598][T12167] 
[ 8858.067331][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8858.067331][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8858.067331][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8858.067331][T12167]      ipv6_find_idev+0x102/0x170
[ 8858.067331][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8858.067331][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.067331][T12167]      netlink_rcv_skb+0x130/0x360
[ 8858.067331][T12167]      netlink_unicast+0x449/0x710
[ 8858.067331][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8858.067331][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.067331][T12167]      ___sys_sendmsg+0xee/0x170
[ 8858.067331][T12167]      __sys_sendmsg+0xcd/0x170
[ 8858.067331][T12167]      do_syscall_64+0xc6/0x1e0
[ 8858.067331][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.067331][T12167] 
[ 8858.318896][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8858.319304][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8858.319304][   T10]      dst_init+0x84/0x4a0
[ 8858.319304][   T10]      dst_alloc+0x97/0x150
[ 8858.319304][   T10]      ip6_dst_alloc+0x23/0x90
[ 8858.319304][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8858.319304][   T10]      ip6_pol_route+0x56f/0x840
[ 8858.319304][   T10]      fib6_rule_lookup+0x334/0x630
[ 8858.319304][   T10]      ip6_route_output_flags+0x259/0x480
[ 8858.319304][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8858.319304][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8858.319304][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8858.319304][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8858.319304][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.319304][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.319304][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.319304][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.319304][   T10] 
[ 8858.321277][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.321277][   T10]      dst_init+0x84/0x4a0
[ 8858.321277][   T10]      dst_alloc+0x97/0x150
[ 8858.321277][   T10]      ip6_dst_alloc+0x23/0x90
[ 8858.321277][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8858.321277][   T10]      ip6_pol_route+0x56f/0x840
[ 8858.321277][   T10]      fib6_rule_lookup+0x334/0x630
[ 8858.321277][   T10]      ip6_route_output_flags+0x259/0x480
[ 8858.321277][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8858.321277][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8858.321277][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8858.321277][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8858.321277][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8858.321277][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.321277][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.321277][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.321277][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.321277][   T10] 
[ 8858.323295][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.323295][   T10]      dst_init+0x84/0x4a0
[ 8858.323295][   T10]      dst_alloc+0x97/0x150
[ 8858.323295][   T10]      ip6_dst_alloc+0x23/0x90
[ 8858.323295][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8858.323295][   T10]      ip6_pol_route+0x56f/0x840
[ 8858.323295][   T10]      fib6_rule_lookup+0x334/0x630
[ 8858.323295][   T10]      ip6_route_output_flags+0x259/0x480
[ 8858.323295][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8858.323295][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8858.323295][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8858.323295][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8858.323295][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8858.323295][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.323295][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.323295][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.323295][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.323295][   T10] 
[ 8858.325686][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.325686][   T10]      netdev_get_by_index+0x5e/0x80
[ 8858.325686][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8858.325686][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8858.325686][   T10]      ip6_route_add+0x1c/0x140
[ 8858.325686][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8858.325686][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8858.325686][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8858.325686][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.325686][   T10]      netlink_rcv_skb+0x130/0x360
[ 8858.325686][   T10]      netlink_unicast+0x449/0x710
[ 8858.325686][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8858.325686][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.325686][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.325686][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.325686][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.325686][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.325686][   T10] 
[ 8858.327717][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.327717][   T10]      netdev_get_by_index+0x5e/0x80
[ 8858.327717][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8858.327717][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8858.327717][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8858.327717][   T10]      ipv6_add_addr+0x411/0x2000
[ 8858.327717][   T10]      inet6_addr_add+0x30e/0xa40
[ 8858.327717][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8858.327717][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.327717][   T10]      netlink_rcv_skb+0x130/0x360
[ 8858.327717][   T10]      netlink_unicast+0x449/0x710
[ 8858.327717][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8858.327717][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.327717][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.327717][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.327717][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.327717][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.327717][   T10] 
[ 8858.329731][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.329731][   T10]      netdev_get_by_index+0x5e/0x80
[ 8858.329731][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8858.329731][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8858.329731][   T10]      ip6_route_add+0x1c/0x140
[ 8858.329731][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8858.329731][   T10]      addrconf_add_dev+0xe2/0x170
[ 8858.329731][   T10]      inet6_addr_add+0x12f/0xa40
[ 8858.329731][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8858.329731][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.329731][   T10]      netlink_rcv_skb+0x130/0x360
[ 8858.329731][   T10]      netlink_unicast+0x449/0x710
[ 8858.329731][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8858.329731][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.329731][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.329731][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.329731][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.329731][   T10] 
[ 8858.331721][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.331721][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8858.331721][   T10]      ipv6_find_idev+0x102/0x170
[ 8858.331721][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8858.331721][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.331721][   T10]      netlink_rcv_skb+0x130/0x360
[ 8858.331721][   T10]      netlink_unicast+0x449/0x710
[ 8858.331721][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8858.331721][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.331721][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.331721][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.331721][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.331721][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.331721][   T10] 
[ 8858.333272][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8858.333272][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8858.333272][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8858.333272][   T10]      ipv6_find_idev+0x102/0x170
[ 8858.333272][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8858.333272][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8858.333272][   T10]      netlink_rcv_skb+0x130/0x360
[ 8858.333272][   T10]      netlink_unicast+0x449/0x710
[ 8858.333272][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8858.333272][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8858.333272][   T10]      ___sys_sendmsg+0xee/0x170
[ 8858.333272][   T10]      __sys_sendmsg+0xcd/0x170
[ 8858.333272][   T10]      do_syscall_64+0xc6/0x1e0
[ 8858.333272][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8858.333272][   T10] 
[ 8868.070743][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8868.071249][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8868.071249][T12167]      netdev_get_by_index+0x5e/0x80
[ 8868.071249][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8868.071249][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8868.071249][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8868.071249][T12167]      ipv6_add_addr+0x411/0x2000
[ 8868.071249][T12167]      inet6_addr_add+0x30e/0xa40
[ 8868.071249][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8868.071249][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.071249][T12167]      netlink_rcv_skb+0x130/0x360
[ 8868.071249][T12167]      netlink_unicast+0x449/0x710
[ 8868.071249][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8868.071249][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.071249][T12167]      ___sys_sendmsg+0xee/0x170
[ 8868.071249][T12167]      __sys_sendmsg+0xcd/0x170
[ 8868.071249][T12167]      do_syscall_64+0xc6/0x1e0
[ 8868.071249][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.071249][T12167] 
[ 8868.073526][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8868.073526][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8868.073526][T12167]      ipv6_find_idev+0x102/0x170
[ 8868.073526][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8868.073526][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.073526][T12167]      netlink_rcv_skb+0x130/0x360
[ 8868.073526][T12167]      netlink_unicast+0x449/0x710
[ 8868.073526][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8868.073526][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.073526][T12167]      ___sys_sendmsg+0xee/0x170
[ 8868.073526][T12167]      __sys_sendmsg+0xcd/0x170
[ 8868.073526][T12167]      do_syscall_64+0xc6/0x1e0
[ 8868.073526][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.073526][T12167] 
[ 8868.075272][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8868.075272][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8868.075272][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8868.075272][T12167]      ipv6_find_idev+0x102/0x170
[ 8868.075272][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8868.075272][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.075272][T12167]      netlink_rcv_skb+0x130/0x360
[ 8868.075272][T12167]      netlink_unicast+0x449/0x710
[ 8868.075272][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8868.075272][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.075272][T12167]      ___sys_sendmsg+0xee/0x170
[ 8868.075272][T12167]      __sys_sendmsg+0xcd/0x170
[ 8868.075272][T12167]      do_syscall_64+0xc6/0x1e0
[ 8868.075272][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.075272][T12167] 
[ 8868.582827][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8868.583366][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8868.583366][   T10]      dst_init+0x84/0x4a0
[ 8868.583366][   T10]      dst_alloc+0x97/0x150
[ 8868.583366][   T10]      ip6_dst_alloc+0x23/0x90
[ 8868.583366][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8868.583366][   T10]      ip6_pol_route+0x56f/0x840
[ 8868.583366][   T10]      fib6_rule_lookup+0x334/0x630
[ 8868.583366][   T10]      ip6_route_output_flags+0x259/0x480
[ 8868.583366][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8868.583366][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8868.583366][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8868.583366][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8868.583366][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.583366][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.583366][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.583366][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.583366][   T10] 
[ 8868.585312][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.585312][   T10]      dst_init+0x84/0x4a0
[ 8868.585312][   T10]      dst_alloc+0x97/0x150
[ 8868.585312][   T10]      ip6_dst_alloc+0x23/0x90
[ 8868.585312][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8868.585312][   T10]      ip6_pol_route+0x56f/0x840
[ 8868.585312][   T10]      fib6_rule_lookup+0x334/0x630
[ 8868.585312][   T10]      ip6_route_output_flags+0x259/0x480
[ 8868.585312][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8868.585312][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8868.585312][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8868.585312][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8868.585312][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8868.585312][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.585312][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.585312][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.585312][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.585312][   T10] 
[ 8868.587321][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.587321][   T10]      dst_init+0x84/0x4a0
[ 8868.587321][   T10]      dst_alloc+0x97/0x150
[ 8868.587321][   T10]      ip6_dst_alloc+0x23/0x90
[ 8868.587321][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8868.587321][   T10]      ip6_pol_route+0x56f/0x840
[ 8868.587321][   T10]      fib6_rule_lookup+0x334/0x630
[ 8868.587321][   T10]      ip6_route_output_flags+0x259/0x480
[ 8868.587321][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8868.587321][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8868.587321][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8868.587321][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8868.587321][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8868.587321][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.587321][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.587321][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.587321][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.587321][   T10] 
[ 8868.589339][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.589339][   T10]      netdev_get_by_index+0x5e/0x80
[ 8868.589339][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8868.589339][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8868.589339][   T10]      ip6_route_add+0x1c/0x140
[ 8868.589339][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8868.589339][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8868.589339][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8868.589339][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.589339][   T10]      netlink_rcv_skb+0x130/0x360
[ 8868.589339][   T10]      netlink_unicast+0x449/0x710
[ 8868.589339][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8868.589339][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.589339][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.589339][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.589339][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.589339][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.589339][   T10] 
[ 8868.591346][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.591346][   T10]      netdev_get_by_index+0x5e/0x80
[ 8868.591346][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8868.591346][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8868.591346][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8868.591346][   T10]      ipv6_add_addr+0x411/0x2000
[ 8868.591346][   T10]      inet6_addr_add+0x30e/0xa40
[ 8868.591346][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8868.591346][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.591346][   T10]      netlink_rcv_skb+0x130/0x360
[ 8868.591346][   T10]      netlink_unicast+0x449/0x710
[ 8868.591346][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8868.591346][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.591346][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.591346][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.591346][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.591346][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.591346][   T10] 
[ 8868.593706][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.593706][   T10]      netdev_get_by_index+0x5e/0x80
[ 8868.593706][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8868.593706][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8868.593706][   T10]      ip6_route_add+0x1c/0x140
[ 8868.593706][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8868.593706][   T10]      addrconf_add_dev+0xe2/0x170
[ 8868.593706][   T10]      inet6_addr_add+0x12f/0xa40
[ 8868.593706][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8868.593706][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.593706][   T10]      netlink_rcv_skb+0x130/0x360
[ 8868.593706][   T10]      netlink_unicast+0x449/0x710
[ 8868.593706][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8868.593706][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.593706][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.593706][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.593706][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.593706][   T10] 
[ 8868.596085][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.596085][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8868.596085][   T10]      ipv6_find_idev+0x102/0x170
[ 8868.596085][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8868.596085][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.596085][   T10]      netlink_rcv_skb+0x130/0x360
[ 8868.596085][   T10]      netlink_unicast+0x449/0x710
[ 8868.596085][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8868.596085][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.596085][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.596085][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.596085][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.596085][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.596085][   T10] 
[ 8868.597946][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8868.597946][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8868.597946][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8868.597946][   T10]      ipv6_find_idev+0x102/0x170
[ 8868.597946][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8868.597946][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8868.597946][   T10]      netlink_rcv_skb+0x130/0x360
[ 8868.597946][   T10]      netlink_unicast+0x449/0x710
[ 8868.597946][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8868.597946][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8868.597946][   T10]      ___sys_sendmsg+0xee/0x170
[ 8868.597946][   T10]      __sys_sendmsg+0xcd/0x170
[ 8868.597946][   T10]      do_syscall_64+0xc6/0x1e0
[ 8868.597946][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8868.597946][   T10] 
[ 8878.150833][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8878.151336][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8878.151336][T12167]      netdev_get_by_index+0x5e/0x80
[ 8878.151336][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8878.151336][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8878.151336][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8878.151336][T12167]      ipv6_add_addr+0x411/0x2000
[ 8878.151336][T12167]      inet6_addr_add+0x30e/0xa40
[ 8878.151336][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8878.151336][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.151336][T12167]      netlink_rcv_skb+0x130/0x360
[ 8878.151336][T12167]      netlink_unicast+0x449/0x710
[ 8878.151336][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8878.151336][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.151336][T12167]      ___sys_sendmsg+0xee/0x170
[ 8878.151336][T12167]      __sys_sendmsg+0xcd/0x170
[ 8878.151336][T12167]      do_syscall_64+0xc6/0x1e0
[ 8878.151336][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.151336][T12167] 
[ 8878.153608][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8878.153608][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8878.153608][T12167]      ipv6_find_idev+0x102/0x170
[ 8878.153608][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8878.153608][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.153608][T12167]      netlink_rcv_skb+0x130/0x360
[ 8878.153608][T12167]      netlink_unicast+0x449/0x710
[ 8878.153608][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8878.153608][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.153608][T12167]      ___sys_sendmsg+0xee/0x170
[ 8878.153608][T12167]      __sys_sendmsg+0xcd/0x170
[ 8878.153608][T12167]      do_syscall_64+0xc6/0x1e0
[ 8878.153608][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.153608][T12167] 
[ 8878.155344][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8878.155344][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8878.155344][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8878.155344][T12167]      ipv6_find_idev+0x102/0x170
[ 8878.155344][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8878.155344][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.155344][T12167]      netlink_rcv_skb+0x130/0x360
[ 8878.155344][T12167]      netlink_unicast+0x449/0x710
[ 8878.155344][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8878.155344][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.155344][T12167]      ___sys_sendmsg+0xee/0x170
[ 8878.155344][T12167]      __sys_sendmsg+0xcd/0x170
[ 8878.155344][T12167]      do_syscall_64+0xc6/0x1e0
[ 8878.155344][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.155344][T12167] 
[ 8878.662883][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8878.663656][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8878.663656][   T10]      dst_init+0x84/0x4a0
[ 8878.663656][   T10]      dst_alloc+0x97/0x150
[ 8878.663656][   T10]      ip6_dst_alloc+0x23/0x90
[ 8878.663656][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8878.663656][   T10]      ip6_pol_route+0x56f/0x840
[ 8878.663656][   T10]      fib6_rule_lookup+0x334/0x630
[ 8878.663656][   T10]      ip6_route_output_flags+0x259/0x480
[ 8878.663656][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8878.663656][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8878.663656][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8878.663656][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8878.663656][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.663656][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.663656][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.663656][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.663656][   T10] 
[ 8878.665577][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.665577][   T10]      dst_init+0x84/0x4a0
[ 8878.665577][   T10]      dst_alloc+0x97/0x150
[ 8878.665577][   T10]      ip6_dst_alloc+0x23/0x90
[ 8878.665577][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8878.665577][   T10]      ip6_pol_route+0x56f/0x840
[ 8878.665577][   T10]      fib6_rule_lookup+0x334/0x630
[ 8878.665577][   T10]      ip6_route_output_flags+0x259/0x480
[ 8878.665577][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8878.665577][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8878.665577][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8878.665577][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8878.665577][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8878.665577][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.665577][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.665577][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.665577][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.665577][   T10] 
[ 8878.667594][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.667594][   T10]      dst_init+0x84/0x4a0
[ 8878.667594][   T10]      dst_alloc+0x97/0x150
[ 8878.667594][   T10]      ip6_dst_alloc+0x23/0x90
[ 8878.667594][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8878.667594][   T10]      ip6_pol_route+0x56f/0x840
[ 8878.667594][   T10]      fib6_rule_lookup+0x334/0x630
[ 8878.667594][   T10]      ip6_route_output_flags+0x259/0x480
[ 8878.667594][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8878.667594][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8878.667594][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8878.667594][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8878.667594][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8878.667594][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.667594][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.667594][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.667594][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.667594][   T10] 
[ 8878.669619][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.669619][   T10]      netdev_get_by_index+0x5e/0x80
[ 8878.669619][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8878.669619][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8878.669619][   T10]      ip6_route_add+0x1c/0x140
[ 8878.669619][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8878.669619][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8878.669619][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8878.669619][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.669619][   T10]      netlink_rcv_skb+0x130/0x360
[ 8878.669619][   T10]      netlink_unicast+0x449/0x710
[ 8878.669619][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8878.669619][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.669619][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.669619][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.669619][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.669619][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.669619][   T10] 
[ 8878.671652][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.671652][   T10]      netdev_get_by_index+0x5e/0x80
[ 8878.671652][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8878.671652][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8878.671652][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8878.671652][   T10]      ipv6_add_addr+0x411/0x2000
[ 8878.671652][   T10]      inet6_addr_add+0x30e/0xa40
[ 8878.671652][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8878.671652][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.671652][   T10]      netlink_rcv_skb+0x130/0x360
[ 8878.671652][   T10]      netlink_unicast+0x449/0x710
[ 8878.671652][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8878.671652][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.671652][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.671652][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.671652][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.671652][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.671652][   T10] 
[ 8878.673680][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.673680][   T10]      netdev_get_by_index+0x5e/0x80
[ 8878.673680][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8878.673680][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8878.673680][   T10]      ip6_route_add+0x1c/0x140
[ 8878.673680][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8878.673680][   T10]      addrconf_add_dev+0xe2/0x170
[ 8878.673680][   T10]      inet6_addr_add+0x12f/0xa40
[ 8878.673680][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8878.673680][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.673680][   T10]      netlink_rcv_skb+0x130/0x360
[ 8878.673680][   T10]      netlink_unicast+0x449/0x710
[ 8878.673680][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8878.673680][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.673680][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.673680][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.673680][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.673680][   T10] 
[ 8878.675677][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.675677][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8878.675677][   T10]      ipv6_find_idev+0x102/0x170
[ 8878.675677][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8878.675677][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.675677][   T10]      netlink_rcv_skb+0x130/0x360
[ 8878.675677][   T10]      netlink_unicast+0x449/0x710
[ 8878.675677][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8878.675677][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.675677][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.675677][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.675677][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.675677][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.675677][   T10] 
[ 8878.677238][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8878.677238][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8878.677238][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8878.677238][   T10]      ipv6_find_idev+0x102/0x170
[ 8878.677238][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8878.677238][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8878.677238][   T10]      netlink_rcv_skb+0x130/0x360
[ 8878.677238][   T10]      netlink_unicast+0x449/0x710
[ 8878.677238][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8878.677238][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8878.677238][   T10]      ___sys_sendmsg+0xee/0x170
[ 8878.677238][   T10]      __sys_sendmsg+0xcd/0x170
[ 8878.677238][   T10]      do_syscall_64+0xc6/0x1e0
[ 8878.677238][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8878.677238][   T10] 
[ 8888.398837][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8888.399324][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8888.399324][T12167]      netdev_get_by_index+0x5e/0x80
[ 8888.399324][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8888.399324][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8888.399324][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8888.399324][T12167]      ipv6_add_addr+0x411/0x2000
[ 8888.399324][T12167]      inet6_addr_add+0x30e/0xa40
[ 8888.399324][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8888.399324][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.399324][T12167]      netlink_rcv_skb+0x130/0x360
[ 8888.399324][T12167]      netlink_unicast+0x449/0x710
[ 8888.399324][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8888.399324][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.399324][T12167]      ___sys_sendmsg+0xee/0x170
[ 8888.399324][T12167]      __sys_sendmsg+0xcd/0x170
[ 8888.399324][T12167]      do_syscall_64+0xc6/0x1e0
[ 8888.399324][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.399324][T12167] 
[ 8888.401594][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8888.401594][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8888.401594][T12167]      ipv6_find_idev+0x102/0x170
[ 8888.401594][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8888.401594][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.401594][T12167]      netlink_rcv_skb+0x130/0x360
[ 8888.401594][T12167]      netlink_unicast+0x449/0x710
[ 8888.401594][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8888.401594][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.401594][T12167]      ___sys_sendmsg+0xee/0x170
[ 8888.401594][T12167]      __sys_sendmsg+0xcd/0x170
[ 8888.401594][T12167]      do_syscall_64+0xc6/0x1e0
[ 8888.401594][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.401594][T12167] 
[ 8888.403325][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8888.403325][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8888.403325][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8888.403325][T12167]      ipv6_find_idev+0x102/0x170
[ 8888.403325][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8888.403325][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.403325][T12167]      netlink_rcv_skb+0x130/0x360
[ 8888.403325][T12167]      netlink_unicast+0x449/0x710
[ 8888.403325][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8888.403325][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.403325][T12167]      ___sys_sendmsg+0xee/0x170
[ 8888.403325][T12167]      __sys_sendmsg+0xcd/0x170
[ 8888.403325][T12167]      do_syscall_64+0xc6/0x1e0
[ 8888.403325][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.403325][T12167] 
[ 8888.926812][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8888.927209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8888.927209][   T10]      dst_init+0x84/0x4a0
[ 8888.927209][   T10]      dst_alloc+0x97/0x150
[ 8888.927209][   T10]      ip6_dst_alloc+0x23/0x90
[ 8888.927209][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8888.927209][   T10]      ip6_pol_route+0x56f/0x840
[ 8888.927209][   T10]      fib6_rule_lookup+0x334/0x630
[ 8888.927209][   T10]      ip6_route_output_flags+0x259/0x480
[ 8888.927209][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8888.927209][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8888.927209][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8888.927209][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8888.927209][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.927209][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.927209][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.927209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.927209][   T10] 
[ 8888.929104][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.929104][   T10]      dst_init+0x84/0x4a0
[ 8888.929104][   T10]      dst_alloc+0x97/0x150
[ 8888.929104][   T10]      ip6_dst_alloc+0x23/0x90
[ 8888.929104][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8888.929104][   T10]      ip6_pol_route+0x56f/0x840
[ 8888.929104][   T10]      fib6_rule_lookup+0x334/0x630
[ 8888.929104][   T10]      ip6_route_output_flags+0x259/0x480
[ 8888.929104][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8888.929104][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8888.929104][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8888.929104][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8888.929104][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8888.929104][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.929104][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.929104][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.929104][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.929104][   T10] 
[ 8888.931100][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.931100][   T10]      dst_init+0x84/0x4a0
[ 8888.931100][   T10]      dst_alloc+0x97/0x150
[ 8888.931100][   T10]      ip6_dst_alloc+0x23/0x90
[ 8888.931100][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8888.931100][   T10]      ip6_pol_route+0x56f/0x840
[ 8888.931100][   T10]      fib6_rule_lookup+0x334/0x630
[ 8888.931100][   T10]      ip6_route_output_flags+0x259/0x480
[ 8888.931100][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8888.931100][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8888.931100][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8888.931100][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8888.931100][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8888.931100][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.931100][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.931100][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.931100][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.931100][   T10] 
[ 8888.933115][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.933115][   T10]      netdev_get_by_index+0x5e/0x80
[ 8888.933115][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8888.933115][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8888.933115][   T10]      ip6_route_add+0x1c/0x140
[ 8888.933115][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8888.933115][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8888.933115][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8888.933115][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.933115][   T10]      netlink_rcv_skb+0x130/0x360
[ 8888.933115][   T10]      netlink_unicast+0x449/0x710
[ 8888.933115][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8888.933115][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.933115][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.933115][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.933115][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.933115][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.933115][   T10] 
[ 8888.935130][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.935130][   T10]      netdev_get_by_index+0x5e/0x80
[ 8888.935130][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8888.935130][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8888.935130][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8888.935130][   T10]      ipv6_add_addr+0x411/0x2000
[ 8888.935130][   T10]      inet6_addr_add+0x30e/0xa40
[ 8888.935130][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8888.935130][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.935130][   T10]      netlink_rcv_skb+0x130/0x360
[ 8888.935130][   T10]      netlink_unicast+0x449/0x710
[ 8888.935130][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8888.935130][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.935130][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.935130][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.935130][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.935130][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.935130][   T10] 
[ 8888.937127][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.937127][   T10]      netdev_get_by_index+0x5e/0x80
[ 8888.937127][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8888.937127][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8888.937127][   T10]      ip6_route_add+0x1c/0x140
[ 8888.937127][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8888.937127][   T10]      addrconf_add_dev+0xe2/0x170
[ 8888.937127][   T10]      inet6_addr_add+0x12f/0xa40
[ 8888.937127][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8888.937127][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.937127][   T10]      netlink_rcv_skb+0x130/0x360
[ 8888.937127][   T10]      netlink_unicast+0x449/0x710
[ 8888.937127][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8888.937127][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.937127][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.937127][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.937127][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.937127][   T10] 
[ 8888.939092][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.939092][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8888.939092][   T10]      ipv6_find_idev+0x102/0x170
[ 8888.939092][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8888.939092][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.939092][   T10]      netlink_rcv_skb+0x130/0x360
[ 8888.939092][   T10]      netlink_unicast+0x449/0x710
[ 8888.939092][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8888.939092][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.939092][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.939092][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.939092][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.939092][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.939092][   T10] 
[ 8888.940635][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8888.940635][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8888.940635][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8888.940635][   T10]      ipv6_find_idev+0x102/0x170
[ 8888.940635][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8888.940635][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8888.940635][   T10]      netlink_rcv_skb+0x130/0x360
[ 8888.940635][   T10]      netlink_unicast+0x449/0x710
[ 8888.940635][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8888.940635][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8888.940635][   T10]      ___sys_sendmsg+0xee/0x170
[ 8888.940635][   T10]      __sys_sendmsg+0xcd/0x170
[ 8888.940635][   T10]      do_syscall_64+0xc6/0x1e0
[ 8888.940635][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8888.940635][   T10] 
[ 8898.654824][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8898.655315][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8898.655315][T12167]      netdev_get_by_index+0x5e/0x80
[ 8898.655315][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8898.655315][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8898.655315][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8898.655315][T12167]      ipv6_add_addr+0x411/0x2000
[ 8898.655315][T12167]      inet6_addr_add+0x30e/0xa40
[ 8898.655315][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8898.655315][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8898.655315][T12167]      netlink_rcv_skb+0x130/0x360
[ 8898.655315][T12167]      netlink_unicast+0x449/0x710
[ 8898.655315][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8898.655315][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8898.655315][T12167]      ___sys_sendmsg+0xee/0x170
[ 8898.655315][T12167]      __sys_sendmsg+0xcd/0x170
[ 8898.655315][T12167]      do_syscall_64+0xc6/0x1e0
[ 8898.655315][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8898.655315][T12167] 
[ 8898.657594][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8898.657594][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8898.657594][T12167]      ipv6_find_idev+0x102/0x170
[ 8898.657594][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8898.657594][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8898.657594][T12167]      netlink_rcv_skb+0x130/0x360
[ 8898.657594][T12167]      netlink_unicast+0x449/0x710
[ 8898.657594][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8898.657594][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8898.657594][T12167]      ___sys_sendmsg+0xee/0x170
[ 8898.657594][T12167]      __sys_sendmsg+0xcd/0x170
[ 8898.657594][T12167]      do_syscall_64+0xc6/0x1e0
[ 8898.657594][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8898.657594][T12167] 
[ 8898.659328][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8898.659328][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8898.659328][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8898.659328][T12167]      ipv6_find_idev+0x102/0x170
[ 8898.659328][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8898.659328][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8898.659328][T12167]      netlink_rcv_skb+0x130/0x360
[ 8898.659328][T12167]      netlink_unicast+0x449/0x710
[ 8898.659328][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8898.659328][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8898.659328][T12167]      ___sys_sendmsg+0xee/0x170
[ 8898.659328][T12167]      __sys_sendmsg+0xcd/0x170
[ 8898.659328][T12167]      do_syscall_64+0xc6/0x1e0
[ 8898.659328][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8898.659328][T12167] 
[ 8899.094873][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8899.095270][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8899.095270][   T10]      dst_init+0x84/0x4a0
[ 8899.095270][   T10]      dst_alloc+0x97/0x150
[ 8899.095270][   T10]      ip6_dst_alloc+0x23/0x90
[ 8899.095270][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8899.095270][   T10]      ip6_pol_route+0x56f/0x840
[ 8899.095270][   T10]      fib6_rule_lookup+0x334/0x630
[ 8899.095270][   T10]      ip6_route_output_flags+0x259/0x480
[ 8899.095270][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8899.095270][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8899.095270][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8899.095270][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8899.095270][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.095270][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.095270][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.095270][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.095270][   T10] 
[ 8899.097188][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.097188][   T10]      dst_init+0x84/0x4a0
[ 8899.097188][   T10]      dst_alloc+0x97/0x150
[ 8899.097188][   T10]      ip6_dst_alloc+0x23/0x90
[ 8899.097188][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8899.097188][   T10]      ip6_pol_route+0x56f/0x840
[ 8899.097188][   T10]      fib6_rule_lookup+0x334/0x630
[ 8899.097188][   T10]      ip6_route_output_flags+0x259/0x480
[ 8899.097188][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8899.097188][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8899.097188][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8899.097188][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8899.097188][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8899.097188][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.097188][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.097188][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.097188][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.097188][   T10] 
[ 8899.099192][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.099192][   T10]      dst_init+0x84/0x4a0
[ 8899.099192][   T10]      dst_alloc+0x97/0x150
[ 8899.099192][   T10]      ip6_dst_alloc+0x23/0x90
[ 8899.099192][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8899.099192][   T10]      ip6_pol_route+0x56f/0x840
[ 8899.099192][   T10]      fib6_rule_lookup+0x334/0x630
[ 8899.099192][   T10]      ip6_route_output_flags+0x259/0x480
[ 8899.099192][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8899.099192][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8899.099192][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8899.099192][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8899.099192][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8899.099192][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.099192][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.099192][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.099192][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.099192][   T10] 
[ 8899.101195][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.101195][   T10]      netdev_get_by_index+0x5e/0x80
[ 8899.101195][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8899.101195][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8899.101195][   T10]      ip6_route_add+0x1c/0x140
[ 8899.101195][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8899.101195][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8899.101195][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8899.101195][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8899.101195][   T10]      netlink_rcv_skb+0x130/0x360
[ 8899.101195][   T10]      netlink_unicast+0x449/0x710
[ 8899.101195][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8899.101195][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8899.101195][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.101195][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.101195][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.101195][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.101195][   T10] 
[ 8899.103215][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.103215][   T10]      netdev_get_by_index+0x5e/0x80
[ 8899.103215][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8899.103215][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8899.103215][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8899.103215][   T10]      ipv6_add_addr+0x411/0x2000
[ 8899.103215][   T10]      inet6_addr_add+0x30e/0xa40
[ 8899.103215][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8899.103215][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8899.103215][   T10]      netlink_rcv_skb+0x130/0x360
[ 8899.103215][   T10]      netlink_unicast+0x449/0x710
[ 8899.103215][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8899.103215][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8899.103215][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.103215][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.103215][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.103215][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.103215][   T10] 
[ 8899.105226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.105226][   T10]      netdev_get_by_index+0x5e/0x80
[ 8899.105226][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8899.105226][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8899.105226][   T10]      ip6_route_add+0x1c/0x140
[ 8899.105226][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8899.105226][   T10]      addrconf_add_dev+0xe2/0x170
[ 8899.105226][   T10]      inet6_addr_add+0x12f/0xa40
[ 8899.105226][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8899.105226][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8899.105226][   T10]      netlink_rcv_skb+0x130/0x360
[ 8899.105226][   T10]      netlink_unicast+0x449/0x710
[ 8899.105226][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8899.105226][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8899.105226][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.105226][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.105226][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.105226][   T10] 
[ 8899.107191][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.107191][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8899.107191][   T10]      ipv6_find_idev+0x102/0x170
[ 8899.107191][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8899.107191][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8899.107191][   T10]      netlink_rcv_skb+0x130/0x360
[ 8899.107191][   T10]      netlink_unicast+0x449/0x710
[ 8899.107191][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8899.107191][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8899.107191][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.107191][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.107191][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.107191][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.107191][   T10] 
[ 8899.108733][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8899.108733][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8899.108733][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8899.108733][   T10]      ipv6_find_idev+0x102/0x170
[ 8899.108733][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8899.108733][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8899.108733][   T10]      netlink_rcv_skb+0x130/0x360
[ 8899.108733][   T10]      netlink_unicast+0x449/0x710
[ 8899.108733][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8899.108733][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8899.108733][   T10]      ___sys_sendmsg+0xee/0x170
[ 8899.108733][   T10]      __sys_sendmsg+0xcd/0x170
[ 8899.108733][   T10]      do_syscall_64+0xc6/0x1e0
[ 8899.108733][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8899.108733][   T10] 
[ 8908.902826][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8908.903259][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8908.903259][T12167]      netdev_get_by_index+0x5e/0x80
[ 8908.903259][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8908.903259][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8908.903259][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8908.903259][T12167]      ipv6_add_addr+0x411/0x2000
[ 8908.903259][T12167]      inet6_addr_add+0x30e/0xa40
[ 8908.903259][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8908.903259][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8908.903259][T12167]      netlink_rcv_skb+0x130/0x360
[ 8908.903259][T12167]      netlink_unicast+0x449/0x710
[ 8908.903259][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8908.903259][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8908.903259][T12167]      ___sys_sendmsg+0xee/0x170
[ 8908.903259][T12167]      __sys_sendmsg+0xcd/0x170
[ 8908.903259][T12167]      do_syscall_64+0xc6/0x1e0
[ 8908.903259][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8908.903259][T12167] 
[ 8908.905536][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8908.905536][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8908.905536][T12167]      ipv6_find_idev+0x102/0x170
[ 8908.905536][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8908.905536][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8908.905536][T12167]      netlink_rcv_skb+0x130/0x360
[ 8908.905536][T12167]      netlink_unicast+0x449/0x710
[ 8908.905536][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8908.905536][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8908.905536][T12167]      ___sys_sendmsg+0xee/0x170
[ 8908.905536][T12167]      __sys_sendmsg+0xcd/0x170
[ 8908.905536][T12167]      do_syscall_64+0xc6/0x1e0
[ 8908.905536][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8908.905536][T12167] 
[ 8908.907269][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8908.907269][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8908.907269][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8908.907269][T12167]      ipv6_find_idev+0x102/0x170
[ 8908.907269][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8908.907269][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8908.907269][T12167]      netlink_rcv_skb+0x130/0x360
[ 8908.907269][T12167]      netlink_unicast+0x449/0x710
[ 8908.907269][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8908.907269][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8908.907269][T12167]      ___sys_sendmsg+0xee/0x170
[ 8908.907269][T12167]      __sys_sendmsg+0xcd/0x170
[ 8908.907269][T12167]      do_syscall_64+0xc6/0x1e0
[ 8908.907269][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8908.907269][T12167] 
[ 8909.110872][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8909.111267][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8909.111267][   T10]      dst_init+0x84/0x4a0
[ 8909.111267][   T10]      dst_alloc+0x97/0x150
[ 8909.111267][   T10]      ip6_dst_alloc+0x23/0x90
[ 8909.111267][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8909.111267][   T10]      ip6_pol_route+0x56f/0x840
[ 8909.111267][   T10]      fib6_rule_lookup+0x334/0x630
[ 8909.111267][   T10]      ip6_route_output_flags+0x259/0x480
[ 8909.111267][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8909.111267][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8909.111267][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8909.111267][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8909.111267][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.111267][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.111267][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.111267][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.111267][   T10] 
[ 8909.113166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.113166][   T10]      dst_init+0x84/0x4a0
[ 8909.113166][   T10]      dst_alloc+0x97/0x150
[ 8909.113166][   T10]      ip6_dst_alloc+0x23/0x90
[ 8909.113166][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8909.113166][   T10]      ip6_pol_route+0x56f/0x840
[ 8909.113166][   T10]      fib6_rule_lookup+0x334/0x630
[ 8909.113166][   T10]      ip6_route_output_flags+0x259/0x480
[ 8909.113166][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8909.113166][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8909.113166][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8909.113166][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8909.113166][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8909.113166][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.113166][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.113166][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.113166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.113166][   T10] 
[ 8909.115177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.115177][   T10]      dst_init+0x84/0x4a0
[ 8909.115177][   T10]      dst_alloc+0x97/0x150
[ 8909.115177][   T10]      ip6_dst_alloc+0x23/0x90
[ 8909.115177][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8909.115177][   T10]      ip6_pol_route+0x56f/0x840
[ 8909.115177][   T10]      fib6_rule_lookup+0x334/0x630
[ 8909.115177][   T10]      ip6_route_output_flags+0x259/0x480
[ 8909.115177][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8909.115177][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8909.115177][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8909.115177][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8909.115177][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8909.115177][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.115177][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.115177][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.115177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.115177][   T10] 
[ 8909.117177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.117177][   T10]      netdev_get_by_index+0x5e/0x80
[ 8909.117177][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8909.117177][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8909.117177][   T10]      ip6_route_add+0x1c/0x140
[ 8909.117177][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8909.117177][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8909.117177][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8909.117177][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8909.117177][   T10]      netlink_rcv_skb+0x130/0x360
[ 8909.117177][   T10]      netlink_unicast+0x449/0x710
[ 8909.117177][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8909.117177][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8909.117177][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.117177][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.117177][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.117177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.117177][   T10] 
[ 8909.119180][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.119180][   T10]      netdev_get_by_index+0x5e/0x80
[ 8909.119180][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8909.119180][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8909.119180][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8909.119180][   T10]      ipv6_add_addr+0x411/0x2000
[ 8909.119180][   T10]      inet6_addr_add+0x30e/0xa40
[ 8909.119180][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8909.119180][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8909.119180][   T10]      netlink_rcv_skb+0x130/0x360
[ 8909.119180][   T10]      netlink_unicast+0x449/0x710
[ 8909.119180][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8909.119180][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8909.119180][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.119180][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.119180][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.119180][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.119180][   T10] 
[ 8909.121181][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.121181][   T10]      netdev_get_by_index+0x5e/0x80
[ 8909.121181][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8909.121181][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8909.121181][   T10]      ip6_route_add+0x1c/0x140
[ 8909.121181][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8909.121181][   T10]      addrconf_add_dev+0xe2/0x170
[ 8909.121181][   T10]      inet6_addr_add+0x12f/0xa40
[ 8909.121181][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8909.121181][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8909.121181][   T10]      netlink_rcv_skb+0x130/0x360
[ 8909.121181][   T10]      netlink_unicast+0x449/0x710
[ 8909.121181][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8909.121181][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8909.121181][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.121181][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.121181][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.121181][   T10] 
[ 8909.123146][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.123146][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8909.123146][   T10]      ipv6_find_idev+0x102/0x170
[ 8909.123146][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8909.123146][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8909.123146][   T10]      netlink_rcv_skb+0x130/0x360
[ 8909.123146][   T10]      netlink_unicast+0x449/0x710
[ 8909.123146][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8909.123146][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8909.123146][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.123146][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.123146][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.123146][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.123146][   T10] 
[ 8909.124696][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8909.124696][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8909.124696][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8909.124696][   T10]      ipv6_find_idev+0x102/0x170
[ 8909.124696][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8909.124696][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8909.124696][   T10]      netlink_rcv_skb+0x130/0x360
[ 8909.124696][   T10]      netlink_unicast+0x449/0x710
[ 8909.124696][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8909.124696][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8909.124696][   T10]      ___sys_sendmsg+0xee/0x170
[ 8909.124696][   T10]      __sys_sendmsg+0xcd/0x170
[ 8909.124696][   T10]      do_syscall_64+0xc6/0x1e0
[ 8909.124696][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8909.124696][   T10] 
[ 8919.150812][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8919.151304][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8919.151304][T12167]      netdev_get_by_index+0x5e/0x80
[ 8919.151304][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8919.151304][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8919.151304][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8919.151304][T12167]      ipv6_add_addr+0x411/0x2000
[ 8919.151304][T12167]      inet6_addr_add+0x30e/0xa40
[ 8919.151304][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8919.151304][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.151304][T12167]      netlink_rcv_skb+0x130/0x360
[ 8919.151304][T12167]      netlink_unicast+0x449/0x710
[ 8919.151304][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8919.151304][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.151304][T12167]      ___sys_sendmsg+0xee/0x170
[ 8919.151304][T12167]      __sys_sendmsg+0xcd/0x170
[ 8919.151304][T12167]      do_syscall_64+0xc6/0x1e0
[ 8919.151304][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.151304][T12167] 
[ 8919.153574][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8919.153574][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8919.153574][T12167]      ipv6_find_idev+0x102/0x170
[ 8919.153574][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8919.153574][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.153574][T12167]      netlink_rcv_skb+0x130/0x360
[ 8919.153574][T12167]      netlink_unicast+0x449/0x710
[ 8919.153574][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8919.153574][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.153574][T12167]      ___sys_sendmsg+0xee/0x170
[ 8919.153574][T12167]      __sys_sendmsg+0xcd/0x170
[ 8919.153574][T12167]      do_syscall_64+0xc6/0x1e0
[ 8919.153574][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.153574][T12167] 
[ 8919.155326][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8919.155326][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8919.155326][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8919.155326][T12167]      ipv6_find_idev+0x102/0x170
[ 8919.155326][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8919.155326][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.155326][T12167]      netlink_rcv_skb+0x130/0x360
[ 8919.155326][T12167]      netlink_unicast+0x449/0x710
[ 8919.155326][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8919.155326][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.155326][T12167]      ___sys_sendmsg+0xee/0x170
[ 8919.155326][T12167]      __sys_sendmsg+0xcd/0x170
[ 8919.155326][T12167]      do_syscall_64+0xc6/0x1e0
[ 8919.155326][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.155326][T12167] 
[ 8919.374789][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8919.375328][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8919.375328][   T10]      dst_init+0x84/0x4a0
[ 8919.375328][   T10]      dst_alloc+0x97/0x150
[ 8919.375328][   T10]      ip6_dst_alloc+0x23/0x90
[ 8919.375328][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8919.375328][   T10]      ip6_pol_route+0x56f/0x840
[ 8919.375328][   T10]      fib6_rule_lookup+0x334/0x630
[ 8919.375328][   T10]      ip6_route_output_flags+0x259/0x480
[ 8919.375328][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8919.375328][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8919.375328][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8919.375328][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8919.375328][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.375328][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.375328][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.375328][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.375328][   T10] 
[ 8919.378301][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.378301][   T10]      dst_init+0x84/0x4a0
[ 8919.378301][   T10]      dst_alloc+0x97/0x150
[ 8919.378301][   T10]      ip6_dst_alloc+0x23/0x90
[ 8919.378301][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8919.378301][   T10]      ip6_pol_route+0x56f/0x840
[ 8919.378301][   T10]      fib6_rule_lookup+0x334/0x630
[ 8919.378301][   T10]      ip6_route_output_flags+0x259/0x480
[ 8919.378301][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8919.378301][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8919.378301][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8919.378301][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8919.378301][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8919.378301][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.378301][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.378301][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.378301][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.378301][   T10] 
[ 8919.381448][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.381448][   T10]      dst_init+0x84/0x4a0
[ 8919.381448][   T10]      dst_alloc+0x97/0x150
[ 8919.381448][   T10]      ip6_dst_alloc+0x23/0x90
[ 8919.381448][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8919.381448][   T10]      ip6_pol_route+0x56f/0x840
[ 8919.381448][   T10]      fib6_rule_lookup+0x334/0x630
[ 8919.381448][   T10]      ip6_route_output_flags+0x259/0x480
[ 8919.381448][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8919.381448][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8919.381448][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8919.381448][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8919.381448][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8919.381448][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.381448][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.381448][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.381448][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.381448][   T10] 
[ 8919.384605][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.384605][   T10]      netdev_get_by_index+0x5e/0x80
[ 8919.384605][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8919.384605][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8919.384605][   T10]      ip6_route_add+0x1c/0x140
[ 8919.384605][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8919.384605][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8919.384605][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8919.384605][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.384605][   T10]      netlink_rcv_skb+0x130/0x360
[ 8919.384605][   T10]      netlink_unicast+0x449/0x710
[ 8919.384605][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8919.384605][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.384605][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.384605][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.384605][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.384605][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.384605][   T10] 
[ 8919.387752][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.387752][   T10]      netdev_get_by_index+0x5e/0x80
[ 8919.387752][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8919.387752][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8919.387752][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8919.387752][   T10]      ipv6_add_addr+0x411/0x2000
[ 8919.387752][   T10]      inet6_addr_add+0x30e/0xa40
[ 8919.387752][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8919.387752][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.387752][   T10]      netlink_rcv_skb+0x130/0x360
[ 8919.387752][   T10]      netlink_unicast+0x449/0x710
[ 8919.387752][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8919.387752][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.387752][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.387752][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.387752][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.387752][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.387752][   T10] 
[ 8919.390900][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.390900][   T10]      netdev_get_by_index+0x5e/0x80
[ 8919.390900][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8919.390900][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8919.390900][   T10]      ip6_route_add+0x1c/0x140
[ 8919.390900][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8919.390900][   T10]      addrconf_add_dev+0xe2/0x170
[ 8919.390900][   T10]      inet6_addr_add+0x12f/0xa40
[ 8919.390900][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8919.390900][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.390900][   T10]      netlink_rcv_skb+0x130/0x360
[ 8919.390900][   T10]      netlink_unicast+0x449/0x710
[ 8919.390900][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8919.390900][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.390900][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.390900][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.390900][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.390900][   T10] 
[ 8919.394003][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.394003][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8919.394003][   T10]      ipv6_find_idev+0x102/0x170
[ 8919.394003][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8919.394003][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.394003][   T10]      netlink_rcv_skb+0x130/0x360
[ 8919.394003][   T10]      netlink_unicast+0x449/0x710
[ 8919.394003][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8919.394003][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.394003][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.394003][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.394003][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.394003][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.394003][   T10] 
[ 8919.396438][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8919.396438][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8919.396438][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8919.396438][   T10]      ipv6_find_idev+0x102/0x170
[ 8919.396438][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8919.396438][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8919.396438][   T10]      netlink_rcv_skb+0x130/0x360
[ 8919.396438][   T10]      netlink_unicast+0x449/0x710
[ 8919.396438][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8919.396438][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8919.396438][   T10]      ___sys_sendmsg+0xee/0x170
[ 8919.396438][   T10]      __sys_sendmsg+0xcd/0x170
[ 8919.396438][   T10]      do_syscall_64+0xc6/0x1e0
[ 8919.396438][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8919.396438][   T10] 
[ 8929.174888][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8929.175369][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8929.175369][T12167]      netdev_get_by_index+0x5e/0x80
[ 8929.175369][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8929.175369][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8929.175369][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8929.175369][T12167]      ipv6_add_addr+0x411/0x2000
[ 8929.175369][T12167]      inet6_addr_add+0x30e/0xa40
[ 8929.175369][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8929.175369][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.175369][T12167]      netlink_rcv_skb+0x130/0x360
[ 8929.175369][T12167]      netlink_unicast+0x449/0x710
[ 8929.175369][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8929.175369][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.175369][T12167]      ___sys_sendmsg+0xee/0x170
[ 8929.175369][T12167]      __sys_sendmsg+0xcd/0x170
[ 8929.175369][T12167]      do_syscall_64+0xc6/0x1e0
[ 8929.175369][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.175369][T12167] 
[ 8929.177643][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8929.177643][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8929.177643][T12167]      ipv6_find_idev+0x102/0x170
[ 8929.177643][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8929.177643][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.177643][T12167]      netlink_rcv_skb+0x130/0x360
[ 8929.177643][T12167]      netlink_unicast+0x449/0x710
[ 8929.177643][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8929.177643][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.177643][T12167]      ___sys_sendmsg+0xee/0x170
[ 8929.177643][T12167]      __sys_sendmsg+0xcd/0x170
[ 8929.177643][T12167]      do_syscall_64+0xc6/0x1e0
[ 8929.177643][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.177643][T12167] 
[ 8929.179380][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8929.179380][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8929.179380][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8929.179380][T12167]      ipv6_find_idev+0x102/0x170
[ 8929.179380][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8929.179380][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.179380][T12167]      netlink_rcv_skb+0x130/0x360
[ 8929.179380][T12167]      netlink_unicast+0x449/0x710
[ 8929.179380][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8929.179380][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.179380][T12167]      ___sys_sendmsg+0xee/0x170
[ 8929.179380][T12167]      __sys_sendmsg+0xcd/0x170
[ 8929.179380][T12167]      do_syscall_64+0xc6/0x1e0
[ 8929.179380][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.179380][T12167] 
[ 8929.430797][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8929.431204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8929.431204][   T10]      dst_init+0x84/0x4a0
[ 8929.431204][   T10]      dst_alloc+0x97/0x150
[ 8929.431204][   T10]      ip6_dst_alloc+0x23/0x90
[ 8929.431204][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8929.431204][   T10]      ip6_pol_route+0x56f/0x840
[ 8929.431204][   T10]      fib6_rule_lookup+0x334/0x630
[ 8929.431204][   T10]      ip6_route_output_flags+0x259/0x480
[ 8929.431204][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8929.431204][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8929.431204][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8929.431204][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8929.431204][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.431204][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.431204][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.431204][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.431204][   T10] 
[ 8929.433100][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.433100][   T10]      dst_init+0x84/0x4a0
[ 8929.433100][   T10]      dst_alloc+0x97/0x150
[ 8929.433100][   T10]      ip6_dst_alloc+0x23/0x90
[ 8929.433100][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8929.433100][   T10]      ip6_pol_route+0x56f/0x840
[ 8929.433100][   T10]      fib6_rule_lookup+0x334/0x630
[ 8929.433100][   T10]      ip6_route_output_flags+0x259/0x480
[ 8929.433100][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8929.433100][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8929.433100][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8929.433100][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8929.433100][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8929.433100][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.433100][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.433100][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.433100][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.433100][   T10] 
[ 8929.435105][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.435105][   T10]      dst_init+0x84/0x4a0
[ 8929.435105][   T10]      dst_alloc+0x97/0x150
[ 8929.435105][   T10]      ip6_dst_alloc+0x23/0x90
[ 8929.435105][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8929.435105][   T10]      ip6_pol_route+0x56f/0x840
[ 8929.435105][   T10]      fib6_rule_lookup+0x334/0x630
[ 8929.435105][   T10]      ip6_route_output_flags+0x259/0x480
[ 8929.435105][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8929.435105][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8929.435105][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8929.435105][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8929.435105][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8929.435105][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.435105][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.435105][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.435105][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.435105][   T10] 
[ 8929.437111][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.437111][   T10]      netdev_get_by_index+0x5e/0x80
[ 8929.437111][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8929.437111][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8929.437111][   T10]      ip6_route_add+0x1c/0x140
[ 8929.437111][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8929.437111][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8929.437111][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8929.437111][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.437111][   T10]      netlink_rcv_skb+0x130/0x360
[ 8929.437111][   T10]      netlink_unicast+0x449/0x710
[ 8929.437111][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8929.437111][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.437111][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.437111][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.437111][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.437111][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.437111][   T10] 
[ 8929.439108][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.439108][   T10]      netdev_get_by_index+0x5e/0x80
[ 8929.439108][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8929.439108][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8929.439108][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8929.439108][   T10]      ipv6_add_addr+0x411/0x2000
[ 8929.439108][   T10]      inet6_addr_add+0x30e/0xa40
[ 8929.439108][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8929.439108][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.439108][   T10]      netlink_rcv_skb+0x130/0x360
[ 8929.439108][   T10]      netlink_unicast+0x449/0x710
[ 8929.439108][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8929.439108][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.439108][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.439108][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.439108][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.439108][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.439108][   T10] 
[ 8929.441142][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.441142][   T10]      netdev_get_by_index+0x5e/0x80
[ 8929.441142][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8929.441142][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8929.441142][   T10]      ip6_route_add+0x1c/0x140
[ 8929.441142][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8929.441142][   T10]      addrconf_add_dev+0xe2/0x170
[ 8929.441142][   T10]      inet6_addr_add+0x12f/0xa40
[ 8929.441142][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8929.441142][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.441142][   T10]      netlink_rcv_skb+0x130/0x360
[ 8929.441142][   T10]      netlink_unicast+0x449/0x710
[ 8929.441142][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8929.441142][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.441142][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.441142][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.441142][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.441142][   T10] 
[ 8929.443105][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.443105][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8929.443105][   T10]      ipv6_find_idev+0x102/0x170
[ 8929.443105][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8929.443105][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.443105][   T10]      netlink_rcv_skb+0x130/0x360
[ 8929.443105][   T10]      netlink_unicast+0x449/0x710
[ 8929.443105][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8929.443105][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.443105][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.443105][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.443105][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.443105][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.443105][   T10] 
[ 8929.444654][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8929.444654][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8929.444654][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8929.444654][   T10]      ipv6_find_idev+0x102/0x170
[ 8929.444654][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8929.444654][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8929.444654][   T10]      netlink_rcv_skb+0x130/0x360
[ 8929.444654][   T10]      netlink_unicast+0x449/0x710
[ 8929.444654][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8929.444654][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8929.444654][   T10]      ___sys_sendmsg+0xee/0x170
[ 8929.444654][   T10]      __sys_sendmsg+0xcd/0x170
[ 8929.444654][   T10]      do_syscall_64+0xc6/0x1e0
[ 8929.444654][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8929.444654][   T10] 
[ 8939.430798][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8939.431227][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8939.431227][T12167]      netdev_get_by_index+0x5e/0x80
[ 8939.431227][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8939.431227][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8939.431227][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8939.431227][T12167]      ipv6_add_addr+0x411/0x2000
[ 8939.431227][T12167]      inet6_addr_add+0x30e/0xa40
[ 8939.431227][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8939.431227][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.431227][T12167]      netlink_rcv_skb+0x130/0x360
[ 8939.431227][T12167]      netlink_unicast+0x449/0x710
[ 8939.431227][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8939.431227][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.431227][T12167]      ___sys_sendmsg+0xee/0x170
[ 8939.431227][T12167]      __sys_sendmsg+0xcd/0x170
[ 8939.431227][T12167]      do_syscall_64+0xc6/0x1e0
[ 8939.431227][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.431227][T12167] 
[ 8939.433632][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8939.433632][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8939.433632][T12167]      ipv6_find_idev+0x102/0x170
[ 8939.433632][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8939.433632][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.433632][T12167]      netlink_rcv_skb+0x130/0x360
[ 8939.433632][T12167]      netlink_unicast+0x449/0x710
[ 8939.433632][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8939.433632][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.433632][T12167]      ___sys_sendmsg+0xee/0x170
[ 8939.433632][T12167]      __sys_sendmsg+0xcd/0x170
[ 8939.433632][T12167]      do_syscall_64+0xc6/0x1e0
[ 8939.433632][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.433632][T12167] 
[ 8939.435374][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8939.435374][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8939.435374][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8939.435374][T12167]      ipv6_find_idev+0x102/0x170
[ 8939.435374][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8939.435374][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.435374][T12167]      netlink_rcv_skb+0x130/0x360
[ 8939.435374][T12167]      netlink_unicast+0x449/0x710
[ 8939.435374][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8939.435374][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.435374][T12167]      ___sys_sendmsg+0xee/0x170
[ 8939.435374][T12167]      __sys_sendmsg+0xcd/0x170
[ 8939.435374][T12167]      do_syscall_64+0xc6/0x1e0
[ 8939.435374][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.435374][T12167] 
[ 8939.694814][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8939.695238][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8939.695238][   T10]      dst_init+0x84/0x4a0
[ 8939.695238][   T10]      dst_alloc+0x97/0x150
[ 8939.695238][   T10]      ip6_dst_alloc+0x23/0x90
[ 8939.695238][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8939.695238][   T10]      ip6_pol_route+0x56f/0x840
[ 8939.695238][   T10]      fib6_rule_lookup+0x334/0x630
[ 8939.695238][   T10]      ip6_route_output_flags+0x259/0x480
[ 8939.695238][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8939.695238][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8939.695238][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8939.695238][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8939.695238][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.695238][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.695238][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.695238][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.695238][   T10] 
[ 8939.697119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.697119][   T10]      dst_init+0x84/0x4a0
[ 8939.697119][   T10]      dst_alloc+0x97/0x150
[ 8939.697119][   T10]      ip6_dst_alloc+0x23/0x90
[ 8939.697119][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8939.697119][   T10]      ip6_pol_route+0x56f/0x840
[ 8939.697119][   T10]      fib6_rule_lookup+0x334/0x630
[ 8939.697119][   T10]      ip6_route_output_flags+0x259/0x480
[ 8939.697119][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8939.697119][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8939.697119][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8939.697119][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8939.697119][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8939.697119][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.697119][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.697119][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.697119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.697119][   T10] 
[ 8939.699109][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.699109][   T10]      dst_init+0x84/0x4a0
[ 8939.699109][   T10]      dst_alloc+0x97/0x150
[ 8939.699109][   T10]      ip6_dst_alloc+0x23/0x90
[ 8939.699109][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8939.699109][   T10]      ip6_pol_route+0x56f/0x840
[ 8939.699109][   T10]      fib6_rule_lookup+0x334/0x630
[ 8939.699109][   T10]      ip6_route_output_flags+0x259/0x480
[ 8939.699109][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8939.699109][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8939.699109][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8939.699109][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8939.699109][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8939.699109][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.699109][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.699109][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.699109][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.699109][   T10] 
[ 8939.701096][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.701096][   T10]      netdev_get_by_index+0x5e/0x80
[ 8939.701096][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8939.701096][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8939.701096][   T10]      ip6_route_add+0x1c/0x140
[ 8939.701096][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8939.701096][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8939.701096][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8939.701096][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.701096][   T10]      netlink_rcv_skb+0x130/0x360
[ 8939.701096][   T10]      netlink_unicast+0x449/0x710
[ 8939.701096][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8939.701096][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.701096][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.701096][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.701096][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.701096][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.701096][   T10] 
[ 8939.703091][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.703091][   T10]      netdev_get_by_index+0x5e/0x80
[ 8939.703091][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8939.703091][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8939.703091][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8939.703091][   T10]      ipv6_add_addr+0x411/0x2000
[ 8939.703091][   T10]      inet6_addr_add+0x30e/0xa40
[ 8939.703091][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8939.703091][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.703091][   T10]      netlink_rcv_skb+0x130/0x360
[ 8939.703091][   T10]      netlink_unicast+0x449/0x710
[ 8939.703091][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8939.703091][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.703091][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.703091][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.703091][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.703091][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.703091][   T10] 
[ 8939.705132][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.705132][   T10]      netdev_get_by_index+0x5e/0x80
[ 8939.705132][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8939.705132][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8939.705132][   T10]      ip6_route_add+0x1c/0x140
[ 8939.705132][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8939.705132][   T10]      addrconf_add_dev+0xe2/0x170
[ 8939.705132][   T10]      inet6_addr_add+0x12f/0xa40
[ 8939.705132][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8939.705132][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.705132][   T10]      netlink_rcv_skb+0x130/0x360
[ 8939.705132][   T10]      netlink_unicast+0x449/0x710
[ 8939.705132][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8939.705132][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.705132][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.705132][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.705132][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.705132][   T10] 
[ 8939.707107][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.707107][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8939.707107][   T10]      ipv6_find_idev+0x102/0x170
[ 8939.707107][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8939.707107][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.707107][   T10]      netlink_rcv_skb+0x130/0x360
[ 8939.707107][   T10]      netlink_unicast+0x449/0x710
[ 8939.707107][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8939.707107][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.707107][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.707107][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.707107][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.707107][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.707107][   T10] 
[ 8939.708640][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8939.708640][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8939.708640][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8939.708640][   T10]      ipv6_find_idev+0x102/0x170
[ 8939.708640][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8939.708640][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8939.708640][   T10]      netlink_rcv_skb+0x130/0x360
[ 8939.708640][   T10]      netlink_unicast+0x449/0x710
[ 8939.708640][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8939.708640][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8939.708640][   T10]      ___sys_sendmsg+0xee/0x170
[ 8939.708640][   T10]      __sys_sendmsg+0xcd/0x170
[ 8939.708640][   T10]      do_syscall_64+0xc6/0x1e0
[ 8939.708640][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8939.708640][   T10] 
[ 8949.590827][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8949.591320][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8949.591320][T12167]      netdev_get_by_index+0x5e/0x80
[ 8949.591320][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8949.591320][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8949.591320][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8949.591320][T12167]      ipv6_add_addr+0x411/0x2000
[ 8949.591320][T12167]      inet6_addr_add+0x30e/0xa40
[ 8949.591320][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8949.591320][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.591320][T12167]      netlink_rcv_skb+0x130/0x360
[ 8949.591320][T12167]      netlink_unicast+0x449/0x710
[ 8949.591320][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8949.591320][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.591320][T12167]      ___sys_sendmsg+0xee/0x170
[ 8949.591320][T12167]      __sys_sendmsg+0xcd/0x170
[ 8949.591320][T12167]      do_syscall_64+0xc6/0x1e0
[ 8949.591320][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.591320][T12167] 
[ 8949.593604][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8949.593604][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8949.593604][T12167]      ipv6_find_idev+0x102/0x170
[ 8949.593604][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8949.593604][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.593604][T12167]      netlink_rcv_skb+0x130/0x360
[ 8949.593604][T12167]      netlink_unicast+0x449/0x710
[ 8949.593604][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8949.593604][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.593604][T12167]      ___sys_sendmsg+0xee/0x170
[ 8949.593604][T12167]      __sys_sendmsg+0xcd/0x170
[ 8949.593604][T12167]      do_syscall_64+0xc6/0x1e0
[ 8949.593604][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.593604][T12167] 
[ 8949.595346][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8949.595346][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8949.595346][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8949.595346][T12167]      ipv6_find_idev+0x102/0x170
[ 8949.595346][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8949.595346][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.595346][T12167]      netlink_rcv_skb+0x130/0x360
[ 8949.595346][T12167]      netlink_unicast+0x449/0x710
[ 8949.595346][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8949.595346][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.595346][T12167]      ___sys_sendmsg+0xee/0x170
[ 8949.595346][T12167]      __sys_sendmsg+0xcd/0x170
[ 8949.595346][T12167]      do_syscall_64+0xc6/0x1e0
[ 8949.595346][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.595346][T12167] 
[ 8949.846799][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8949.847200][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8949.847200][   T10]      dst_init+0x84/0x4a0
[ 8949.847200][   T10]      dst_alloc+0x97/0x150
[ 8949.847200][   T10]      ip6_dst_alloc+0x23/0x90
[ 8949.847200][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8949.847200][   T10]      ip6_pol_route+0x56f/0x840
[ 8949.847200][   T10]      fib6_rule_lookup+0x334/0x630
[ 8949.847200][   T10]      ip6_route_output_flags+0x259/0x480
[ 8949.847200][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8949.847200][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8949.847200][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8949.847200][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8949.847200][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.847200][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.847200][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.847200][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.847200][   T10] 
[ 8949.849109][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.849109][   T10]      dst_init+0x84/0x4a0
[ 8949.849109][   T10]      dst_alloc+0x97/0x150
[ 8949.849109][   T10]      ip6_dst_alloc+0x23/0x90
[ 8949.849109][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8949.849109][   T10]      ip6_pol_route+0x56f/0x840
[ 8949.849109][   T10]      fib6_rule_lookup+0x334/0x630
[ 8949.849109][   T10]      ip6_route_output_flags+0x259/0x480
[ 8949.849109][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8949.849109][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8949.849109][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8949.849109][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8949.849109][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8949.849109][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.849109][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.849109][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.849109][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.849109][   T10] 
[ 8949.851122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.851122][   T10]      dst_init+0x84/0x4a0
[ 8949.851122][   T10]      dst_alloc+0x97/0x150
[ 8949.851122][   T10]      ip6_dst_alloc+0x23/0x90
[ 8949.851122][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8949.851122][   T10]      ip6_pol_route+0x56f/0x840
[ 8949.851122][   T10]      fib6_rule_lookup+0x334/0x630
[ 8949.851122][   T10]      ip6_route_output_flags+0x259/0x480
[ 8949.851122][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8949.851122][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8949.851122][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8949.851122][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8949.851122][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8949.851122][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.851122][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.851122][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.851122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.851122][   T10] 
[ 8949.853148][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.853148][   T10]      netdev_get_by_index+0x5e/0x80
[ 8949.853148][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8949.853148][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8949.853148][   T10]      ip6_route_add+0x1c/0x140
[ 8949.853148][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8949.853148][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8949.853148][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8949.853148][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.853148][   T10]      netlink_rcv_skb+0x130/0x360
[ 8949.853148][   T10]      netlink_unicast+0x449/0x710
[ 8949.853148][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8949.853148][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.853148][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.853148][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.853148][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.853148][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.853148][   T10] 
[ 8949.855178][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.855178][   T10]      netdev_get_by_index+0x5e/0x80
[ 8949.855178][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8949.855178][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8949.855178][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8949.855178][   T10]      ipv6_add_addr+0x411/0x2000
[ 8949.855178][   T10]      inet6_addr_add+0x30e/0xa40
[ 8949.855178][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8949.855178][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.855178][   T10]      netlink_rcv_skb+0x130/0x360
[ 8949.855178][   T10]      netlink_unicast+0x449/0x710
[ 8949.855178][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8949.855178][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.855178][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.855178][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.855178][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.855178][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.855178][   T10] 
[ 8949.857216][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.857216][   T10]      netdev_get_by_index+0x5e/0x80
[ 8949.857216][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8949.857216][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8949.857216][   T10]      ip6_route_add+0x1c/0x140
[ 8949.857216][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8949.857216][   T10]      addrconf_add_dev+0xe2/0x170
[ 8949.857216][   T10]      inet6_addr_add+0x12f/0xa40
[ 8949.857216][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8949.857216][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.857216][   T10]      netlink_rcv_skb+0x130/0x360
[ 8949.857216][   T10]      netlink_unicast+0x449/0x710
[ 8949.857216][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8949.857216][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.857216][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.857216][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.857216][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.857216][   T10] 
[ 8949.859209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.859209][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8949.859209][   T10]      ipv6_find_idev+0x102/0x170
[ 8949.859209][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8949.859209][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.859209][   T10]      netlink_rcv_skb+0x130/0x360
[ 8949.859209][   T10]      netlink_unicast+0x449/0x710
[ 8949.859209][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8949.859209][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.859209][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.859209][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.859209][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.859209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.859209][   T10] 
[ 8949.860771][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8949.860771][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8949.860771][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8949.860771][   T10]      ipv6_find_idev+0x102/0x170
[ 8949.860771][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8949.860771][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8949.860771][   T10]      netlink_rcv_skb+0x130/0x360
[ 8949.860771][   T10]      netlink_unicast+0x449/0x710
[ 8949.860771][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8949.860771][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8949.860771][   T10]      ___sys_sendmsg+0xee/0x170
[ 8949.860771][   T10]      __sys_sendmsg+0xcd/0x170
[ 8949.860771][   T10]      do_syscall_64+0xc6/0x1e0
[ 8949.860771][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8949.860771][   T10] 
[ 8959.598825][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8959.599315][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8959.599315][T12167]      netdev_get_by_index+0x5e/0x80
[ 8959.599315][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8959.599315][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8959.599315][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8959.599315][T12167]      ipv6_add_addr+0x411/0x2000
[ 8959.599315][T12167]      inet6_addr_add+0x30e/0xa40
[ 8959.599315][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8959.599315][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8959.599315][T12167]      netlink_rcv_skb+0x130/0x360
[ 8959.599315][T12167]      netlink_unicast+0x449/0x710
[ 8959.599315][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8959.599315][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8959.599315][T12167]      ___sys_sendmsg+0xee/0x170
[ 8959.599315][T12167]      __sys_sendmsg+0xcd/0x170
[ 8959.599315][T12167]      do_syscall_64+0xc6/0x1e0
[ 8959.599315][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8959.599315][T12167] 
[ 8959.601584][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8959.601584][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8959.601584][T12167]      ipv6_find_idev+0x102/0x170
[ 8959.601584][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8959.601584][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8959.601584][T12167]      netlink_rcv_skb+0x130/0x360
[ 8959.601584][T12167]      netlink_unicast+0x449/0x710
[ 8959.601584][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8959.601584][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8959.601584][T12167]      ___sys_sendmsg+0xee/0x170
[ 8959.601584][T12167]      __sys_sendmsg+0xcd/0x170
[ 8959.601584][T12167]      do_syscall_64+0xc6/0x1e0
[ 8959.601584][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8959.601584][T12167] 
[ 8959.603319][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8959.603319][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8959.603319][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8959.603319][T12167]      ipv6_find_idev+0x102/0x170
[ 8959.603319][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8959.603319][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8959.603319][T12167]      netlink_rcv_skb+0x130/0x360
[ 8959.603319][T12167]      netlink_unicast+0x449/0x710
[ 8959.603319][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8959.603319][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8959.603319][T12167]      ___sys_sendmsg+0xee/0x170
[ 8959.603319][T12167]      __sys_sendmsg+0xcd/0x170
[ 8959.603319][T12167]      do_syscall_64+0xc6/0x1e0
[ 8959.603319][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8959.603319][T12167] 
[ 8960.102871][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8960.103270][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8960.103270][   T10]      dst_init+0x84/0x4a0
[ 8960.103270][   T10]      dst_alloc+0x97/0x150
[ 8960.103270][   T10]      ip6_dst_alloc+0x23/0x90
[ 8960.103270][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8960.103270][   T10]      ip6_pol_route+0x56f/0x840
[ 8960.103270][   T10]      fib6_rule_lookup+0x334/0x630
[ 8960.103270][   T10]      ip6_route_output_flags+0x259/0x480
[ 8960.103270][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8960.103270][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8960.103270][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8960.103270][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8960.103270][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.103270][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.103270][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.103270][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.103270][   T10] 
[ 8960.105199][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.105199][   T10]      dst_init+0x84/0x4a0
[ 8960.105199][   T10]      dst_alloc+0x97/0x150
[ 8960.105199][   T10]      ip6_dst_alloc+0x23/0x90
[ 8960.105199][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8960.105199][   T10]      ip6_pol_route+0x56f/0x840
[ 8960.105199][   T10]      fib6_rule_lookup+0x334/0x630
[ 8960.105199][   T10]      ip6_route_output_flags+0x259/0x480
[ 8960.105199][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8960.105199][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8960.105199][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8960.105199][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8960.105199][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8960.105199][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.105199][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.105199][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.105199][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.105199][   T10] 
[ 8960.107206][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.107206][   T10]      dst_init+0x84/0x4a0
[ 8960.107206][   T10]      dst_alloc+0x97/0x150
[ 8960.107206][   T10]      ip6_dst_alloc+0x23/0x90
[ 8960.107206][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8960.107206][   T10]      ip6_pol_route+0x56f/0x840
[ 8960.107206][   T10]      fib6_rule_lookup+0x334/0x630
[ 8960.107206][   T10]      ip6_route_output_flags+0x259/0x480
[ 8960.107206][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8960.107206][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8960.107206][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8960.107206][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8960.107206][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8960.107206][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.107206][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.107206][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.107206][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.107206][   T10] 
[ 8960.109226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.109226][   T10]      netdev_get_by_index+0x5e/0x80
[ 8960.109226][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8960.109226][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8960.109226][   T10]      ip6_route_add+0x1c/0x140
[ 8960.109226][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8960.109226][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8960.109226][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8960.109226][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8960.109226][   T10]      netlink_rcv_skb+0x130/0x360
[ 8960.109226][   T10]      netlink_unicast+0x449/0x710
[ 8960.109226][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8960.109226][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8960.109226][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.109226][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.109226][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.109226][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.109226][   T10] 
[ 8960.111244][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.111244][   T10]      netdev_get_by_index+0x5e/0x80
[ 8960.111244][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8960.111244][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8960.111244][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8960.111244][   T10]      ipv6_add_addr+0x411/0x2000
[ 8960.111244][   T10]      inet6_addr_add+0x30e/0xa40
[ 8960.111244][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8960.111244][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8960.111244][   T10]      netlink_rcv_skb+0x130/0x360
[ 8960.111244][   T10]      netlink_unicast+0x449/0x710
[ 8960.111244][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8960.111244][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8960.111244][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.111244][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.111244][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.111244][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.111244][   T10] 
[ 8960.113271][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.113271][   T10]      netdev_get_by_index+0x5e/0x80
[ 8960.113271][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8960.113271][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8960.113271][   T10]      ip6_route_add+0x1c/0x140
[ 8960.113271][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8960.113271][   T10]      addrconf_add_dev+0xe2/0x170
[ 8960.113271][   T10]      inet6_addr_add+0x12f/0xa40
[ 8960.113271][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8960.113271][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8960.113271][   T10]      netlink_rcv_skb+0x130/0x360
[ 8960.113271][   T10]      netlink_unicast+0x449/0x710
[ 8960.113271][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8960.113271][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8960.113271][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.113271][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.113271][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.113271][   T10] 
[ 8960.115264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.115264][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8960.115264][   T10]      ipv6_find_idev+0x102/0x170
[ 8960.115264][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8960.115264][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8960.115264][   T10]      netlink_rcv_skb+0x130/0x360
[ 8960.115264][   T10]      netlink_unicast+0x449/0x710
[ 8960.115264][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8960.115264][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8960.115264][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.115264][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.115264][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.115264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.115264][   T10] 
[ 8960.116815][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8960.116815][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8960.116815][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8960.116815][   T10]      ipv6_find_idev+0x102/0x170
[ 8960.116815][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8960.116815][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8960.116815][   T10]      netlink_rcv_skb+0x130/0x360
[ 8960.116815][   T10]      netlink_unicast+0x449/0x710
[ 8960.116815][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8960.116815][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8960.116815][   T10]      ___sys_sendmsg+0xee/0x170
[ 8960.116815][   T10]      __sys_sendmsg+0xcd/0x170
[ 8960.116815][   T10]      do_syscall_64+0xc6/0x1e0
[ 8960.116815][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8960.116815][   T10] 
[ 8969.718814][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8969.719311][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8969.719311][T12167]      netdev_get_by_index+0x5e/0x80
[ 8969.719311][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8969.719311][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8969.719311][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8969.719311][T12167]      ipv6_add_addr+0x411/0x2000
[ 8969.719311][T12167]      inet6_addr_add+0x30e/0xa40
[ 8969.719311][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8969.719311][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8969.719311][T12167]      netlink_rcv_skb+0x130/0x360
[ 8969.719311][T12167]      netlink_unicast+0x449/0x710
[ 8969.719311][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8969.719311][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8969.719311][T12167]      ___sys_sendmsg+0xee/0x170
[ 8969.719311][T12167]      __sys_sendmsg+0xcd/0x170
[ 8969.719311][T12167]      do_syscall_64+0xc6/0x1e0
[ 8969.719311][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8969.719311][T12167] 
[ 8969.721578][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8969.721578][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8969.721578][T12167]      ipv6_find_idev+0x102/0x170
[ 8969.721578][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8969.721578][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8969.721578][T12167]      netlink_rcv_skb+0x130/0x360
[ 8969.721578][T12167]      netlink_unicast+0x449/0x710
[ 8969.721578][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8969.721578][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8969.721578][T12167]      ___sys_sendmsg+0xee/0x170
[ 8969.721578][T12167]      __sys_sendmsg+0xcd/0x170
[ 8969.721578][T12167]      do_syscall_64+0xc6/0x1e0
[ 8969.721578][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8969.721578][T12167] 
[ 8969.723311][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8969.723311][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8969.723311][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8969.723311][T12167]      ipv6_find_idev+0x102/0x170
[ 8969.723311][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8969.723311][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8969.723311][T12167]      netlink_rcv_skb+0x130/0x360
[ 8969.723311][T12167]      netlink_unicast+0x449/0x710
[ 8969.723311][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8969.723311][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8969.723311][T12167]      ___sys_sendmsg+0xee/0x170
[ 8969.723311][T12167]      __sys_sendmsg+0xcd/0x170
[ 8969.723311][T12167]      do_syscall_64+0xc6/0x1e0
[ 8969.723311][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8969.723311][T12167] 
[ 8970.222882][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8970.223290][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8970.223290][   T10]      dst_init+0x84/0x4a0
[ 8970.223290][   T10]      dst_alloc+0x97/0x150
[ 8970.223290][   T10]      ip6_dst_alloc+0x23/0x90
[ 8970.223290][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8970.223290][   T10]      ip6_pol_route+0x56f/0x840
[ 8970.223290][   T10]      fib6_rule_lookup+0x334/0x630
[ 8970.223290][   T10]      ip6_route_output_flags+0x259/0x480
[ 8970.223290][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8970.223290][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8970.223290][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8970.223290][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8970.223290][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.223290][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.223290][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.223290][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.223290][   T10] 
[ 8970.225197][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.225197][   T10]      dst_init+0x84/0x4a0
[ 8970.225197][   T10]      dst_alloc+0x97/0x150
[ 8970.225197][   T10]      ip6_dst_alloc+0x23/0x90
[ 8970.225197][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8970.225197][   T10]      ip6_pol_route+0x56f/0x840
[ 8970.225197][   T10]      fib6_rule_lookup+0x334/0x630
[ 8970.225197][   T10]      ip6_route_output_flags+0x259/0x480
[ 8970.225197][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8970.225197][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8970.225197][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8970.225197][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8970.225197][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8970.225197][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.225197][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.225197][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.225197][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.225197][   T10] 
[ 8970.227194][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.227194][   T10]      dst_init+0x84/0x4a0
[ 8970.227194][   T10]      dst_alloc+0x97/0x150
[ 8970.227194][   T10]      ip6_dst_alloc+0x23/0x90
[ 8970.227194][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8970.227194][   T10]      ip6_pol_route+0x56f/0x840
[ 8970.227194][   T10]      fib6_rule_lookup+0x334/0x630
[ 8970.227194][   T10]      ip6_route_output_flags+0x259/0x480
[ 8970.227194][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8970.227194][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8970.227194][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8970.227194][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8970.227194][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8970.227194][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.227194][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.227194][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.227194][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.227194][   T10] 
[ 8970.229188][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.229188][   T10]      netdev_get_by_index+0x5e/0x80
[ 8970.229188][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8970.229188][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8970.229188][   T10]      ip6_route_add+0x1c/0x140
[ 8970.229188][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8970.229188][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8970.229188][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8970.229188][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8970.229188][   T10]      netlink_rcv_skb+0x130/0x360
[ 8970.229188][   T10]      netlink_unicast+0x449/0x710
[ 8970.229188][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8970.229188][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8970.229188][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.229188][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.229188][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.229188][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.229188][   T10] 
[ 8970.231190][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.231190][   T10]      netdev_get_by_index+0x5e/0x80
[ 8970.231190][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8970.231190][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8970.231190][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8970.231190][   T10]      ipv6_add_addr+0x411/0x2000
[ 8970.231190][   T10]      inet6_addr_add+0x30e/0xa40
[ 8970.231190][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8970.231190][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8970.231190][   T10]      netlink_rcv_skb+0x130/0x360
[ 8970.231190][   T10]      netlink_unicast+0x449/0x710
[ 8970.231190][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8970.231190][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8970.231190][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.231190][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.231190][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.231190][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.231190][   T10] 
[ 8970.233184][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.233184][   T10]      netdev_get_by_index+0x5e/0x80
[ 8970.233184][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8970.233184][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8970.233184][   T10]      ip6_route_add+0x1c/0x140
[ 8970.233184][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8970.233184][   T10]      addrconf_add_dev+0xe2/0x170
[ 8970.233184][   T10]      inet6_addr_add+0x12f/0xa40
[ 8970.233184][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8970.233184][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8970.233184][   T10]      netlink_rcv_skb+0x130/0x360
[ 8970.233184][   T10]      netlink_unicast+0x449/0x710
[ 8970.233184][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8970.233184][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8970.233184][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.233184][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.233184][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.233184][   T10] 
[ 8970.235155][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.235155][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8970.235155][   T10]      ipv6_find_idev+0x102/0x170
[ 8970.235155][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8970.235155][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8970.235155][   T10]      netlink_rcv_skb+0x130/0x360
[ 8970.235155][   T10]      netlink_unicast+0x449/0x710
[ 8970.235155][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8970.235155][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8970.235155][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.235155][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.235155][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.235155][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.235155][   T10] 
[ 8970.236692][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8970.236692][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8970.236692][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8970.236692][   T10]      ipv6_find_idev+0x102/0x170
[ 8970.236692][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8970.236692][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8970.236692][   T10]      netlink_rcv_skb+0x130/0x360
[ 8970.236692][   T10]      netlink_unicast+0x449/0x710
[ 8970.236692][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8970.236692][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8970.236692][   T10]      ___sys_sendmsg+0xee/0x170
[ 8970.236692][   T10]      __sys_sendmsg+0xcd/0x170
[ 8970.236692][   T10]      do_syscall_64+0xc6/0x1e0
[ 8970.236692][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8970.236692][   T10] 
[ 8971.558769][   T42] INFO: task modprobe:12646 blocked for more than 245 seconds.
[ 8971.559052][   T42]       Not tainted 6.8.0-virtme #1
[ 8971.559176][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 8971.559376][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 8971.559623][   T42] Call Trace:
[ 8971.559741][   T42]  <TASK>
[ 8971.559812][   T42]  __schedule+0x705/0x1ac0
[ 8971.559949][   T42]  ? __pfx___schedule+0x10/0x10
[ 8971.560073][   T42]  ? schedule+0x1a5/0x210
[ 8971.560170][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 8971.560301][   T42]  ? mark_lock+0x38/0x3e0
[ 8971.560397][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 8971.560525][   T42]  ? schedule+0x1a5/0x210
[ 8971.560626][   T42]  schedule+0xdf/0x210
[ 8971.560734][   T42]  schedule_preempt_disabled+0x15/0x30
[ 8971.560856][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 8971.560985][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 8971.561140][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 8971.561264][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 8971.561396][   T42]  ? lock_acquire+0x1c1/0x220
[ 8971.561521][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 8971.561651][   T42]  down_write+0x1c9/0x200
[ 8971.561757][   T42]  ? __pfx_down_write+0x10/0x10
[ 8971.561879][   T42]  ? __pfx__printk+0x10/0x10
[ 8971.562007][   T42]  ? __pfx___lock_release+0x10/0x10
[ 8971.562133][   T42]  register_pernet_subsys+0x1a/0x50
[ 8971.562257][   T42]  tcf_register_action+0xa3/0x600
[ 8971.562388][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 8971.562551][   T42]  do_one_initcall+0xc8/0x3f0
[ 8971.562676][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 8971.562811][   T42]  ? __create_object+0x5e/0xb0
[ 8971.562940][   T42]  ? kasan_unpoison+0x27/0x60
[ 8971.563069][   T42]  do_init_module+0x233/0x740
[ 8971.563207][   T42]  load_module+0x16b5/0x2350
[ 8971.563343][   T42]  ? __pfx_load_module+0x10/0x10
[ 8971.563485][   T42]  ? kernel_read_file+0x3d2/0x520
[ 8971.563623][   T42]  ? kernel_read_file+0x300/0x520
[ 8971.563757][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 8971.563888][   T42]  ? init_module_from_file+0xd2/0x130
[ 8971.564016][   T42]  init_module_from_file+0xd2/0x130
[ 8971.564139][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 8971.564291][   T42]  ? __lock_release+0x103/0x460
[ 8971.564413][   T42]  ? idempotent_init_module+0x32a/0x620
[ 8971.564552][   T42]  ? idempotent_init_module+0x32a/0x620
[ 8971.564675][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 8971.564813][   T42]  idempotent_init_module+0x342/0x620
[ 8971.564939][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 8971.565112][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 8971.565237][   T42]  do_syscall_64+0xc6/0x1e0
[ 8971.565363][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8971.565516][   T42] RIP: 0033:0x7fac120f1e5d
[ 8971.565650][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 8971.565843][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 8971.566026][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 8971.566209][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 8971.566394][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 8971.566577][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 8971.566784][   T42]  </TASK>
[ 8971.566878][   T42] 
[ 8971.566878][   T42] Showing all locks held in the system:
[ 8971.567051][   T42] 3 locks held by kworker/u16:0/10:
[ 8971.567174][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 8971.567426][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 8971.567641][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 8971.567870][   T42] 1 lock held by khungtaskd/42:
[ 8971.567990][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 8971.568208][   T42] 2 locks held by kworker/u17:1/44:
[ 8971.568328][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 8971.568570][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 8971.568922][   T42] 1 lock held by modprobe/12646:
[ 8971.569039][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 8971.569283][   T42] 
[ 8971.569348][   T42] =============================================
[ 8971.569348][   T42] 
[ 8979.966807][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8979.967321][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8979.967321][T12167]      netdev_get_by_index+0x5e/0x80
[ 8979.967321][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8979.967321][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8979.967321][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8979.967321][T12167]      ipv6_add_addr+0x411/0x2000
[ 8979.967321][T12167]      inet6_addr_add+0x30e/0xa40
[ 8979.967321][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8979.967321][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8979.967321][T12167]      netlink_rcv_skb+0x130/0x360
[ 8979.967321][T12167]      netlink_unicast+0x449/0x710
[ 8979.967321][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8979.967321][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8979.967321][T12167]      ___sys_sendmsg+0xee/0x170
[ 8979.967321][T12167]      __sys_sendmsg+0xcd/0x170
[ 8979.967321][T12167]      do_syscall_64+0xc6/0x1e0
[ 8979.967321][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8979.967321][T12167] 
[ 8979.969623][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8979.969623][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8979.969623][T12167]      ipv6_find_idev+0x102/0x170
[ 8979.969623][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8979.969623][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8979.969623][T12167]      netlink_rcv_skb+0x130/0x360
[ 8979.969623][T12167]      netlink_unicast+0x449/0x710
[ 8979.969623][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8979.969623][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8979.969623][T12167]      ___sys_sendmsg+0xee/0x170
[ 8979.969623][T12167]      __sys_sendmsg+0xcd/0x170
[ 8979.969623][T12167]      do_syscall_64+0xc6/0x1e0
[ 8979.969623][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8979.969623][T12167] 
[ 8979.971451][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8979.971451][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8979.971451][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8979.971451][T12167]      ipv6_find_idev+0x102/0x170
[ 8979.971451][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8979.971451][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8979.971451][T12167]      netlink_rcv_skb+0x130/0x360
[ 8979.971451][T12167]      netlink_unicast+0x449/0x710
[ 8979.971451][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8979.971451][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8979.971451][T12167]      ___sys_sendmsg+0xee/0x170
[ 8979.971451][T12167]      __sys_sendmsg+0xcd/0x170
[ 8979.971451][T12167]      do_syscall_64+0xc6/0x1e0
[ 8979.971451][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8979.971451][T12167] 
[ 8980.478802][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8980.479221][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8980.479221][   T10]      dst_init+0x84/0x4a0
[ 8980.479221][   T10]      dst_alloc+0x97/0x150
[ 8980.479221][   T10]      ip6_dst_alloc+0x23/0x90
[ 8980.479221][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8980.479221][   T10]      ip6_pol_route+0x56f/0x840
[ 8980.479221][   T10]      fib6_rule_lookup+0x334/0x630
[ 8980.479221][   T10]      ip6_route_output_flags+0x259/0x480
[ 8980.479221][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8980.479221][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8980.479221][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8980.479221][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8980.479221][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.479221][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.479221][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.479221][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.479221][   T10] 
[ 8980.481115][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.481115][   T10]      dst_init+0x84/0x4a0
[ 8980.481115][   T10]      dst_alloc+0x97/0x150
[ 8980.481115][   T10]      ip6_dst_alloc+0x23/0x90
[ 8980.481115][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8980.481115][   T10]      ip6_pol_route+0x56f/0x840
[ 8980.481115][   T10]      fib6_rule_lookup+0x334/0x630
[ 8980.481115][   T10]      ip6_route_output_flags+0x259/0x480
[ 8980.481115][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8980.481115][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8980.481115][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8980.481115][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8980.481115][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8980.481115][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.481115][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.481115][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.481115][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.481115][   T10] 
[ 8980.483115][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.483115][   T10]      dst_init+0x84/0x4a0
[ 8980.483115][   T10]      dst_alloc+0x97/0x150
[ 8980.483115][   T10]      ip6_dst_alloc+0x23/0x90
[ 8980.483115][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8980.483115][   T10]      ip6_pol_route+0x56f/0x840
[ 8980.483115][   T10]      fib6_rule_lookup+0x334/0x630
[ 8980.483115][   T10]      ip6_route_output_flags+0x259/0x480
[ 8980.483115][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8980.483115][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8980.483115][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8980.483115][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8980.483115][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8980.483115][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.483115][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.483115][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.483115][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.483115][   T10] 
[ 8980.485130][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.485130][   T10]      netdev_get_by_index+0x5e/0x80
[ 8980.485130][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8980.485130][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8980.485130][   T10]      ip6_route_add+0x1c/0x140
[ 8980.485130][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8980.485130][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8980.485130][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8980.485130][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8980.485130][   T10]      netlink_rcv_skb+0x130/0x360
[ 8980.485130][   T10]      netlink_unicast+0x449/0x710
[ 8980.485130][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8980.485130][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8980.485130][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.485130][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.485130][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.485130][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.485130][   T10] 
[ 8980.487129][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.487129][   T10]      netdev_get_by_index+0x5e/0x80
[ 8980.487129][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8980.487129][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8980.487129][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8980.487129][   T10]      ipv6_add_addr+0x411/0x2000
[ 8980.487129][   T10]      inet6_addr_add+0x30e/0xa40
[ 8980.487129][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8980.487129][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8980.487129][   T10]      netlink_rcv_skb+0x130/0x360
[ 8980.487129][   T10]      netlink_unicast+0x449/0x710
[ 8980.487129][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8980.487129][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8980.487129][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.487129][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.487129][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.487129][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.487129][   T10] 
[ 8980.489126][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.489126][   T10]      netdev_get_by_index+0x5e/0x80
[ 8980.489126][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8980.489126][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8980.489126][   T10]      ip6_route_add+0x1c/0x140
[ 8980.489126][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8980.489126][   T10]      addrconf_add_dev+0xe2/0x170
[ 8980.489126][   T10]      inet6_addr_add+0x12f/0xa40
[ 8980.489126][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8980.489126][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8980.489126][   T10]      netlink_rcv_skb+0x130/0x360
[ 8980.489126][   T10]      netlink_unicast+0x449/0x710
[ 8980.489126][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8980.489126][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8980.489126][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.489126][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.489126][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.489126][   T10] 
[ 8980.491097][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.491097][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8980.491097][   T10]      ipv6_find_idev+0x102/0x170
[ 8980.491097][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8980.491097][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8980.491097][   T10]      netlink_rcv_skb+0x130/0x360
[ 8980.491097][   T10]      netlink_unicast+0x449/0x710
[ 8980.491097][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8980.491097][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8980.491097][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.491097][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.491097][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.491097][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.491097][   T10] 
[ 8980.492640][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8980.492640][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8980.492640][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8980.492640][   T10]      ipv6_find_idev+0x102/0x170
[ 8980.492640][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8980.492640][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8980.492640][   T10]      netlink_rcv_skb+0x130/0x360
[ 8980.492640][   T10]      netlink_unicast+0x449/0x710
[ 8980.492640][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8980.492640][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8980.492640][   T10]      ___sys_sendmsg+0xee/0x170
[ 8980.492640][   T10]      __sys_sendmsg+0xcd/0x170
[ 8980.492640][   T10]      do_syscall_64+0xc6/0x1e0
[ 8980.492640][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8980.492640][   T10] 
[ 8990.102907][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 8990.103422][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8990.103422][T12167]      netdev_get_by_index+0x5e/0x80
[ 8990.103422][T12167]      fib6_nh_init+0x3d8/0x1580
[ 8990.103422][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 8990.103422][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 8990.103422][T12167]      ipv6_add_addr+0x411/0x2000
[ 8990.103422][T12167]      inet6_addr_add+0x30e/0xa40
[ 8990.103422][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 8990.103422][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.103422][T12167]      netlink_rcv_skb+0x130/0x360
[ 8990.103422][T12167]      netlink_unicast+0x449/0x710
[ 8990.103422][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8990.103422][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.103422][T12167]      ___sys_sendmsg+0xee/0x170
[ 8990.103422][T12167]      __sys_sendmsg+0xcd/0x170
[ 8990.103422][T12167]      do_syscall_64+0xc6/0x1e0
[ 8990.103422][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.103422][T12167] 
[ 8990.105883][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8990.105883][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 8990.105883][T12167]      ipv6_find_idev+0x102/0x170
[ 8990.105883][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8990.105883][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.105883][T12167]      netlink_rcv_skb+0x130/0x360
[ 8990.105883][T12167]      netlink_unicast+0x449/0x710
[ 8990.105883][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8990.105883][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.105883][T12167]      ___sys_sendmsg+0xee/0x170
[ 8990.105883][T12167]      __sys_sendmsg+0xcd/0x170
[ 8990.105883][T12167]      do_syscall_64+0xc6/0x1e0
[ 8990.105883][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.105883][T12167] 
[ 8990.107676][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 8990.107676][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 8990.107676][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 8990.107676][T12167]      ipv6_find_idev+0x102/0x170
[ 8990.107676][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8990.107676][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.107676][T12167]      netlink_rcv_skb+0x130/0x360
[ 8990.107676][T12167]      netlink_unicast+0x449/0x710
[ 8990.107676][T12167]      netlink_sendmsg+0x723/0xbe0
[ 8990.107676][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.107676][T12167]      ___sys_sendmsg+0xee/0x170
[ 8990.107676][T12167]      __sys_sendmsg+0xcd/0x170
[ 8990.107676][T12167]      do_syscall_64+0xc6/0x1e0
[ 8990.107676][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.107676][T12167] 
[ 8990.614813][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 8990.615220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 8990.615220][   T10]      dst_init+0x84/0x4a0
[ 8990.615220][   T10]      dst_alloc+0x97/0x150
[ 8990.615220][   T10]      ip6_dst_alloc+0x23/0x90
[ 8990.615220][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8990.615220][   T10]      ip6_pol_route+0x56f/0x840
[ 8990.615220][   T10]      fib6_rule_lookup+0x334/0x630
[ 8990.615220][   T10]      ip6_route_output_flags+0x259/0x480
[ 8990.615220][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8990.615220][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8990.615220][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 8990.615220][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8990.615220][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.615220][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.615220][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.615220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.615220][   T10] 
[ 8990.617166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.617166][   T10]      dst_init+0x84/0x4a0
[ 8990.617166][   T10]      dst_alloc+0x97/0x150
[ 8990.617166][   T10]      ip6_dst_alloc+0x23/0x90
[ 8990.617166][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8990.617166][   T10]      ip6_pol_route+0x56f/0x840
[ 8990.617166][   T10]      fib6_rule_lookup+0x334/0x630
[ 8990.617166][   T10]      ip6_route_output_flags+0x259/0x480
[ 8990.617166][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8990.617166][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8990.617166][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8990.617166][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 8990.617166][   T10]      ____sys_sendmsg+0x772/0xa10
[ 8990.617166][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.617166][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.617166][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.617166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.617166][   T10] 
[ 8990.619224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.619224][   T10]      dst_init+0x84/0x4a0
[ 8990.619224][   T10]      dst_alloc+0x97/0x150
[ 8990.619224][   T10]      ip6_dst_alloc+0x23/0x90
[ 8990.619224][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 8990.619224][   T10]      ip6_pol_route+0x56f/0x840
[ 8990.619224][   T10]      fib6_rule_lookup+0x334/0x630
[ 8990.619224][   T10]      ip6_route_output_flags+0x259/0x480
[ 8990.619224][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 8990.619224][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 8990.619224][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 8990.619224][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 8990.619224][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 8990.619224][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.619224][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.619224][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.619224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.619224][   T10] 
[ 8990.621228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.621228][   T10]      netdev_get_by_index+0x5e/0x80
[ 8990.621228][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8990.621228][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8990.621228][   T10]      ip6_route_add+0x1c/0x140
[ 8990.621228][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 8990.621228][   T10]      inet6_addr_add+0x4f8/0xa40
[ 8990.621228][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8990.621228][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.621228][   T10]      netlink_rcv_skb+0x130/0x360
[ 8990.621228][   T10]      netlink_unicast+0x449/0x710
[ 8990.621228][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8990.621228][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.621228][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.621228][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.621228][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.621228][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.621228][   T10] 
[ 8990.623261][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.623261][   T10]      netdev_get_by_index+0x5e/0x80
[ 8990.623261][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8990.623261][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8990.623261][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 8990.623261][   T10]      ipv6_add_addr+0x411/0x2000
[ 8990.623261][   T10]      inet6_addr_add+0x30e/0xa40
[ 8990.623261][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8990.623261][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.623261][   T10]      netlink_rcv_skb+0x130/0x360
[ 8990.623261][   T10]      netlink_unicast+0x449/0x710
[ 8990.623261][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8990.623261][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.623261][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.623261][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.623261][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.623261][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.623261][   T10] 
[ 8990.625312][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.625312][   T10]      netdev_get_by_index+0x5e/0x80
[ 8990.625312][   T10]      fib6_nh_init+0x3d8/0x1580
[ 8990.625312][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 8990.625312][   T10]      ip6_route_add+0x1c/0x140
[ 8990.625312][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 8990.625312][   T10]      addrconf_add_dev+0xe2/0x170
[ 8990.625312][   T10]      inet6_addr_add+0x12f/0xa40
[ 8990.625312][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 8990.625312][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.625312][   T10]      netlink_rcv_skb+0x130/0x360
[ 8990.625312][   T10]      netlink_unicast+0x449/0x710
[ 8990.625312][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8990.625312][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.625312][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.625312][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.625312][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.625312][   T10] 
[ 8990.627292][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.627292][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 8990.627292][   T10]      ipv6_find_idev+0x102/0x170
[ 8990.627292][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8990.627292][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.627292][   T10]      netlink_rcv_skb+0x130/0x360
[ 8990.627292][   T10]      netlink_unicast+0x449/0x710
[ 8990.627292][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8990.627292][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.627292][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.627292][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.627292][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.627292][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.627292][   T10] 
[ 8990.628851][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 8990.628851][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 8990.628851][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 8990.628851][   T10]      ipv6_find_idev+0x102/0x170
[ 8990.628851][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 8990.628851][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 8990.628851][   T10]      netlink_rcv_skb+0x130/0x360
[ 8990.628851][   T10]      netlink_unicast+0x449/0x710
[ 8990.628851][   T10]      netlink_sendmsg+0x723/0xbe0
[ 8990.628851][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 8990.628851][   T10]      ___sys_sendmsg+0xee/0x170
[ 8990.628851][   T10]      __sys_sendmsg+0xcd/0x170
[ 8990.628851][   T10]      do_syscall_64+0xc6/0x1e0
[ 8990.628851][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 8990.628851][   T10] 
[ 9000.350800][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9000.351311][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9000.351311][T12167]      netdev_get_by_index+0x5e/0x80
[ 9000.351311][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9000.351311][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9000.351311][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9000.351311][T12167]      ipv6_add_addr+0x411/0x2000
[ 9000.351311][T12167]      inet6_addr_add+0x30e/0xa40
[ 9000.351311][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9000.351311][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.351311][T12167]      netlink_rcv_skb+0x130/0x360
[ 9000.351311][T12167]      netlink_unicast+0x449/0x710
[ 9000.351311][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9000.351311][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.351311][T12167]      ___sys_sendmsg+0xee/0x170
[ 9000.351311][T12167]      __sys_sendmsg+0xcd/0x170
[ 9000.351311][T12167]      do_syscall_64+0xc6/0x1e0
[ 9000.351311][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.351311][T12167] 
[ 9000.353646][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9000.353646][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9000.353646][T12167]      ipv6_find_idev+0x102/0x170
[ 9000.353646][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9000.353646][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.353646][T12167]      netlink_rcv_skb+0x130/0x360
[ 9000.353646][T12167]      netlink_unicast+0x449/0x710
[ 9000.353646][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9000.353646][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.353646][T12167]      ___sys_sendmsg+0xee/0x170
[ 9000.353646][T12167]      __sys_sendmsg+0xcd/0x170
[ 9000.353646][T12167]      do_syscall_64+0xc6/0x1e0
[ 9000.353646][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.353646][T12167] 
[ 9000.355415][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9000.355415][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9000.355415][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9000.355415][T12167]      ipv6_find_idev+0x102/0x170
[ 9000.355415][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9000.355415][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.355415][T12167]      netlink_rcv_skb+0x130/0x360
[ 9000.355415][T12167]      netlink_unicast+0x449/0x710
[ 9000.355415][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9000.355415][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.355415][T12167]      ___sys_sendmsg+0xee/0x170
[ 9000.355415][T12167]      __sys_sendmsg+0xcd/0x170
[ 9000.355415][T12167]      do_syscall_64+0xc6/0x1e0
[ 9000.355415][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.355415][T12167] 
[ 9000.878847][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9000.879250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9000.879250][   T10]      dst_init+0x84/0x4a0
[ 9000.879250][   T10]      dst_alloc+0x97/0x150
[ 9000.879250][   T10]      ip6_dst_alloc+0x23/0x90
[ 9000.879250][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9000.879250][   T10]      ip6_pol_route+0x56f/0x840
[ 9000.879250][   T10]      fib6_rule_lookup+0x334/0x630
[ 9000.879250][   T10]      ip6_route_output_flags+0x259/0x480
[ 9000.879250][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9000.879250][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9000.879250][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9000.879250][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9000.879250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.879250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.879250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.879250][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.879250][   T10] 
[ 9000.881160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.881160][   T10]      dst_init+0x84/0x4a0
[ 9000.881160][   T10]      dst_alloc+0x97/0x150
[ 9000.881160][   T10]      ip6_dst_alloc+0x23/0x90
[ 9000.881160][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9000.881160][   T10]      ip6_pol_route+0x56f/0x840
[ 9000.881160][   T10]      fib6_rule_lookup+0x334/0x630
[ 9000.881160][   T10]      ip6_route_output_flags+0x259/0x480
[ 9000.881160][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9000.881160][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9000.881160][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9000.881160][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9000.881160][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9000.881160][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.881160][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.881160][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.881160][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.881160][   T10] 
[ 9000.883163][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.883163][   T10]      dst_init+0x84/0x4a0
[ 9000.883163][   T10]      dst_alloc+0x97/0x150
[ 9000.883163][   T10]      ip6_dst_alloc+0x23/0x90
[ 9000.883163][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9000.883163][   T10]      ip6_pol_route+0x56f/0x840
[ 9000.883163][   T10]      fib6_rule_lookup+0x334/0x630
[ 9000.883163][   T10]      ip6_route_output_flags+0x259/0x480
[ 9000.883163][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9000.883163][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9000.883163][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9000.883163][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9000.883163][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9000.883163][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.883163][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.883163][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.883163][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.883163][   T10] 
[ 9000.885195][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.885195][   T10]      netdev_get_by_index+0x5e/0x80
[ 9000.885195][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9000.885195][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9000.885195][   T10]      ip6_route_add+0x1c/0x140
[ 9000.885195][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9000.885195][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9000.885195][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9000.885195][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.885195][   T10]      netlink_rcv_skb+0x130/0x360
[ 9000.885195][   T10]      netlink_unicast+0x449/0x710
[ 9000.885195][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9000.885195][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.885195][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.885195][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.885195][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.885195][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.885195][   T10] 
[ 9000.887313][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.887313][   T10]      netdev_get_by_index+0x5e/0x80
[ 9000.887313][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9000.887313][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9000.887313][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9000.887313][   T10]      ipv6_add_addr+0x411/0x2000
[ 9000.887313][   T10]      inet6_addr_add+0x30e/0xa40
[ 9000.887313][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9000.887313][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.887313][   T10]      netlink_rcv_skb+0x130/0x360
[ 9000.887313][   T10]      netlink_unicast+0x449/0x710
[ 9000.887313][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9000.887313][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.887313][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.887313][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.887313][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.887313][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.887313][   T10] 
[ 9000.889325][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.889325][   T10]      netdev_get_by_index+0x5e/0x80
[ 9000.889325][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9000.889325][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9000.889325][   T10]      ip6_route_add+0x1c/0x140
[ 9000.889325][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9000.889325][   T10]      addrconf_add_dev+0xe2/0x170
[ 9000.889325][   T10]      inet6_addr_add+0x12f/0xa40
[ 9000.889325][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9000.889325][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.889325][   T10]      netlink_rcv_skb+0x130/0x360
[ 9000.889325][   T10]      netlink_unicast+0x449/0x710
[ 9000.889325][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9000.889325][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.889325][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.889325][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.889325][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.889325][   T10] 
[ 9000.891302][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.891302][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9000.891302][   T10]      ipv6_find_idev+0x102/0x170
[ 9000.891302][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9000.891302][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.891302][   T10]      netlink_rcv_skb+0x130/0x360
[ 9000.891302][   T10]      netlink_unicast+0x449/0x710
[ 9000.891302][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9000.891302][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.891302][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.891302][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.891302][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.891302][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.891302][   T10] 
[ 9000.892840][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9000.892840][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9000.892840][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9000.892840][   T10]      ipv6_find_idev+0x102/0x170
[ 9000.892840][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9000.892840][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9000.892840][   T10]      netlink_rcv_skb+0x130/0x360
[ 9000.892840][   T10]      netlink_unicast+0x449/0x710
[ 9000.892840][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9000.892840][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9000.892840][   T10]      ___sys_sendmsg+0xee/0x170
[ 9000.892840][   T10]      __sys_sendmsg+0xcd/0x170
[ 9000.892840][   T10]      do_syscall_64+0xc6/0x1e0
[ 9000.892840][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9000.892840][   T10] 
[ 9010.606813][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9010.607295][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9010.607295][T12167]      netdev_get_by_index+0x5e/0x80
[ 9010.607295][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9010.607295][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9010.607295][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9010.607295][T12167]      ipv6_add_addr+0x411/0x2000
[ 9010.607295][T12167]      inet6_addr_add+0x30e/0xa40
[ 9010.607295][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9010.607295][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9010.607295][T12167]      netlink_rcv_skb+0x130/0x360
[ 9010.607295][T12167]      netlink_unicast+0x449/0x710
[ 9010.607295][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9010.607295][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9010.607295][T12167]      ___sys_sendmsg+0xee/0x170
[ 9010.607295][T12167]      __sys_sendmsg+0xcd/0x170
[ 9010.607295][T12167]      do_syscall_64+0xc6/0x1e0
[ 9010.607295][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9010.607295][T12167] 
[ 9010.609606][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9010.609606][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9010.609606][T12167]      ipv6_find_idev+0x102/0x170
[ 9010.609606][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9010.609606][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9010.609606][T12167]      netlink_rcv_skb+0x130/0x360
[ 9010.609606][T12167]      netlink_unicast+0x449/0x710
[ 9010.609606][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9010.609606][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9010.609606][T12167]      ___sys_sendmsg+0xee/0x170
[ 9010.609606][T12167]      __sys_sendmsg+0xcd/0x170
[ 9010.609606][T12167]      do_syscall_64+0xc6/0x1e0
[ 9010.609606][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9010.609606][T12167] 
[ 9010.611368][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9010.611368][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9010.611368][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9010.611368][T12167]      ipv6_find_idev+0x102/0x170
[ 9010.611368][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9010.611368][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9010.611368][T12167]      netlink_rcv_skb+0x130/0x360
[ 9010.611368][T12167]      netlink_unicast+0x449/0x710
[ 9010.611368][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9010.611368][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9010.611368][T12167]      ___sys_sendmsg+0xee/0x170
[ 9010.611368][T12167]      __sys_sendmsg+0xcd/0x170
[ 9010.611368][T12167]      do_syscall_64+0xc6/0x1e0
[ 9010.611368][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9010.611368][T12167] 
[ 9011.142828][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9011.143180][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9011.143180][   T10]      dst_init+0x84/0x4a0
[ 9011.143180][   T10]      dst_alloc+0x97/0x150
[ 9011.143180][   T10]      ip6_dst_alloc+0x23/0x90
[ 9011.143180][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9011.143180][   T10]      ip6_pol_route+0x56f/0x840
[ 9011.143180][   T10]      fib6_rule_lookup+0x334/0x630
[ 9011.143180][   T10]      ip6_route_output_flags+0x259/0x480
[ 9011.143180][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9011.143180][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9011.143180][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9011.143180][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9011.143180][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.143180][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.143180][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.143180][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.143180][   T10] 
[ 9011.145096][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.145096][   T10]      dst_init+0x84/0x4a0
[ 9011.145096][   T10]      dst_alloc+0x97/0x150
[ 9011.145096][   T10]      ip6_dst_alloc+0x23/0x90
[ 9011.145096][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9011.145096][   T10]      ip6_pol_route+0x56f/0x840
[ 9011.145096][   T10]      fib6_rule_lookup+0x334/0x630
[ 9011.145096][   T10]      ip6_route_output_flags+0x259/0x480
[ 9011.145096][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9011.145096][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9011.145096][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9011.145096][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9011.145096][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9011.145096][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.145096][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.145096][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.145096][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.145096][   T10] 
[ 9011.147104][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.147104][   T10]      dst_init+0x84/0x4a0
[ 9011.147104][   T10]      dst_alloc+0x97/0x150
[ 9011.147104][   T10]      ip6_dst_alloc+0x23/0x90
[ 9011.147104][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9011.147104][   T10]      ip6_pol_route+0x56f/0x840
[ 9011.147104][   T10]      fib6_rule_lookup+0x334/0x630
[ 9011.147104][   T10]      ip6_route_output_flags+0x259/0x480
[ 9011.147104][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9011.147104][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9011.147104][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9011.147104][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9011.147104][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9011.147104][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.147104][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.147104][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.147104][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.147104][   T10] 
[ 9011.149107][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.149107][   T10]      netdev_get_by_index+0x5e/0x80
[ 9011.149107][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9011.149107][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9011.149107][   T10]      ip6_route_add+0x1c/0x140
[ 9011.149107][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9011.149107][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9011.149107][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9011.149107][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9011.149107][   T10]      netlink_rcv_skb+0x130/0x360
[ 9011.149107][   T10]      netlink_unicast+0x449/0x710
[ 9011.149107][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9011.149107][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9011.149107][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.149107][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.149107][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.149107][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.149107][   T10] 
[ 9011.151116][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.151116][   T10]      netdev_get_by_index+0x5e/0x80
[ 9011.151116][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9011.151116][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9011.151116][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9011.151116][   T10]      ipv6_add_addr+0x411/0x2000
[ 9011.151116][   T10]      inet6_addr_add+0x30e/0xa40
[ 9011.151116][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9011.151116][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9011.151116][   T10]      netlink_rcv_skb+0x130/0x360
[ 9011.151116][   T10]      netlink_unicast+0x449/0x710
[ 9011.151116][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9011.151116][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9011.151116][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.151116][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.151116][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.151116][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.151116][   T10] 
[ 9011.153117][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.153117][   T10]      netdev_get_by_index+0x5e/0x80
[ 9011.153117][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9011.153117][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9011.153117][   T10]      ip6_route_add+0x1c/0x140
[ 9011.153117][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9011.153117][   T10]      addrconf_add_dev+0xe2/0x170
[ 9011.153117][   T10]      inet6_addr_add+0x12f/0xa40
[ 9011.153117][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9011.153117][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9011.153117][   T10]      netlink_rcv_skb+0x130/0x360
[ 9011.153117][   T10]      netlink_unicast+0x449/0x710
[ 9011.153117][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9011.153117][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9011.153117][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.153117][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.153117][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.153117][   T10] 
[ 9011.155102][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.155102][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9011.155102][   T10]      ipv6_find_idev+0x102/0x170
[ 9011.155102][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9011.155102][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9011.155102][   T10]      netlink_rcv_skb+0x130/0x360
[ 9011.155102][   T10]      netlink_unicast+0x449/0x710
[ 9011.155102][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9011.155102][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9011.155102][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.155102][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.155102][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.155102][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.155102][   T10] 
[ 9011.156646][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9011.156646][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9011.156646][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9011.156646][   T10]      ipv6_find_idev+0x102/0x170
[ 9011.156646][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9011.156646][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9011.156646][   T10]      netlink_rcv_skb+0x130/0x360
[ 9011.156646][   T10]      netlink_unicast+0x449/0x710
[ 9011.156646][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9011.156646][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9011.156646][   T10]      ___sys_sendmsg+0xee/0x170
[ 9011.156646][   T10]      __sys_sendmsg+0xcd/0x170
[ 9011.156646][   T10]      do_syscall_64+0xc6/0x1e0
[ 9011.156646][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9011.156646][   T10] 
[ 9020.862824][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9020.863322][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9020.863322][T12167]      netdev_get_by_index+0x5e/0x80
[ 9020.863322][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9020.863322][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9020.863322][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9020.863322][T12167]      ipv6_add_addr+0x411/0x2000
[ 9020.863322][T12167]      inet6_addr_add+0x30e/0xa40
[ 9020.863322][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9020.863322][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9020.863322][T12167]      netlink_rcv_skb+0x130/0x360
[ 9020.863322][T12167]      netlink_unicast+0x449/0x710
[ 9020.863322][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9020.863322][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9020.863322][T12167]      ___sys_sendmsg+0xee/0x170
[ 9020.863322][T12167]      __sys_sendmsg+0xcd/0x170
[ 9020.863322][T12167]      do_syscall_64+0xc6/0x1e0
[ 9020.863322][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9020.863322][T12167] 
[ 9020.865605][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9020.865605][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9020.865605][T12167]      ipv6_find_idev+0x102/0x170
[ 9020.865605][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9020.865605][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9020.865605][T12167]      netlink_rcv_skb+0x130/0x360
[ 9020.865605][T12167]      netlink_unicast+0x449/0x710
[ 9020.865605][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9020.865605][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9020.865605][T12167]      ___sys_sendmsg+0xee/0x170
[ 9020.865605][T12167]      __sys_sendmsg+0xcd/0x170
[ 9020.865605][T12167]      do_syscall_64+0xc6/0x1e0
[ 9020.865605][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9020.865605][T12167] 
[ 9020.867355][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9020.867355][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9020.867355][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9020.867355][T12167]      ipv6_find_idev+0x102/0x170
[ 9020.867355][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9020.867355][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9020.867355][T12167]      netlink_rcv_skb+0x130/0x360
[ 9020.867355][T12167]      netlink_unicast+0x449/0x710
[ 9020.867355][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9020.867355][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9020.867355][T12167]      ___sys_sendmsg+0xee/0x170
[ 9020.867355][T12167]      __sys_sendmsg+0xcd/0x170
[ 9020.867355][T12167]      do_syscall_64+0xc6/0x1e0
[ 9020.867355][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9020.867355][T12167] 
[ 9021.406800][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9021.407197][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9021.407197][   T10]      dst_init+0x84/0x4a0
[ 9021.407197][   T10]      dst_alloc+0x97/0x150
[ 9021.407197][   T10]      ip6_dst_alloc+0x23/0x90
[ 9021.407197][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9021.407197][   T10]      ip6_pol_route+0x56f/0x840
[ 9021.407197][   T10]      fib6_rule_lookup+0x334/0x630
[ 9021.407197][   T10]      ip6_route_output_flags+0x259/0x480
[ 9021.407197][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9021.407197][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9021.407197][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9021.407197][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9021.407197][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.407197][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.407197][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.407197][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.407197][   T10] 
[ 9021.409114][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.409114][   T10]      dst_init+0x84/0x4a0
[ 9021.409114][   T10]      dst_alloc+0x97/0x150
[ 9021.409114][   T10]      ip6_dst_alloc+0x23/0x90
[ 9021.409114][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9021.409114][   T10]      ip6_pol_route+0x56f/0x840
[ 9021.409114][   T10]      fib6_rule_lookup+0x334/0x630
[ 9021.409114][   T10]      ip6_route_output_flags+0x259/0x480
[ 9021.409114][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9021.409114][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9021.409114][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9021.409114][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9021.409114][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9021.409114][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.409114][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.409114][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.409114][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.409114][   T10] 
[ 9021.411121][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.411121][   T10]      dst_init+0x84/0x4a0
[ 9021.411121][   T10]      dst_alloc+0x97/0x150
[ 9021.411121][   T10]      ip6_dst_alloc+0x23/0x90
[ 9021.411121][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9021.411121][   T10]      ip6_pol_route+0x56f/0x840
[ 9021.411121][   T10]      fib6_rule_lookup+0x334/0x630
[ 9021.411121][   T10]      ip6_route_output_flags+0x259/0x480
[ 9021.411121][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9021.411121][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9021.411121][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9021.411121][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9021.411121][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9021.411121][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.411121][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.411121][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.411121][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.411121][   T10] 
[ 9021.413122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.413122][   T10]      netdev_get_by_index+0x5e/0x80
[ 9021.413122][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9021.413122][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9021.413122][   T10]      ip6_route_add+0x1c/0x140
[ 9021.413122][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9021.413122][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9021.413122][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9021.413122][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9021.413122][   T10]      netlink_rcv_skb+0x130/0x360
[ 9021.413122][   T10]      netlink_unicast+0x449/0x710
[ 9021.413122][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9021.413122][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9021.413122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.413122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.413122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.413122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.413122][   T10] 
[ 9021.415139][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.415139][   T10]      netdev_get_by_index+0x5e/0x80
[ 9021.415139][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9021.415139][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9021.415139][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9021.415139][   T10]      ipv6_add_addr+0x411/0x2000
[ 9021.415139][   T10]      inet6_addr_add+0x30e/0xa40
[ 9021.415139][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9021.415139][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9021.415139][   T10]      netlink_rcv_skb+0x130/0x360
[ 9021.415139][   T10]      netlink_unicast+0x449/0x710
[ 9021.415139][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9021.415139][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9021.415139][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.415139][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.415139][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.415139][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.415139][   T10] 
[ 9021.417133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.417133][   T10]      netdev_get_by_index+0x5e/0x80
[ 9021.417133][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9021.417133][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9021.417133][   T10]      ip6_route_add+0x1c/0x140
[ 9021.417133][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9021.417133][   T10]      addrconf_add_dev+0xe2/0x170
[ 9021.417133][   T10]      inet6_addr_add+0x12f/0xa40
[ 9021.417133][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9021.417133][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9021.417133][   T10]      netlink_rcv_skb+0x130/0x360
[ 9021.417133][   T10]      netlink_unicast+0x449/0x710
[ 9021.417133][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9021.417133][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9021.417133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.417133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.417133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.417133][   T10] 
[ 9021.419100][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.419100][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9021.419100][   T10]      ipv6_find_idev+0x102/0x170
[ 9021.419100][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9021.419100][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9021.419100][   T10]      netlink_rcv_skb+0x130/0x360
[ 9021.419100][   T10]      netlink_unicast+0x449/0x710
[ 9021.419100][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9021.419100][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9021.419100][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.419100][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.419100][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.419100][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.419100][   T10] 
[ 9021.420761][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9021.420761][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9021.420761][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9021.420761][   T10]      ipv6_find_idev+0x102/0x170
[ 9021.420761][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9021.420761][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9021.420761][   T10]      netlink_rcv_skb+0x130/0x360
[ 9021.420761][   T10]      netlink_unicast+0x449/0x710
[ 9021.420761][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9021.420761][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9021.420761][   T10]      ___sys_sendmsg+0xee/0x170
[ 9021.420761][   T10]      __sys_sendmsg+0xcd/0x170
[ 9021.420761][   T10]      do_syscall_64+0xc6/0x1e0
[ 9021.420761][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9021.420761][   T10] 
[ 9031.118851][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9031.119293][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9031.119293][T12167]      netdev_get_by_index+0x5e/0x80
[ 9031.119293][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9031.119293][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9031.119293][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9031.119293][T12167]      ipv6_add_addr+0x411/0x2000
[ 9031.119293][T12167]      inet6_addr_add+0x30e/0xa40
[ 9031.119293][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9031.119293][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.119293][T12167]      netlink_rcv_skb+0x130/0x360
[ 9031.119293][T12167]      netlink_unicast+0x449/0x710
[ 9031.119293][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9031.119293][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.119293][T12167]      ___sys_sendmsg+0xee/0x170
[ 9031.119293][T12167]      __sys_sendmsg+0xcd/0x170
[ 9031.119293][T12167]      do_syscall_64+0xc6/0x1e0
[ 9031.119293][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.119293][T12167] 
[ 9031.121581][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9031.121581][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9031.121581][T12167]      ipv6_find_idev+0x102/0x170
[ 9031.121581][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9031.121581][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.121581][T12167]      netlink_rcv_skb+0x130/0x360
[ 9031.121581][T12167]      netlink_unicast+0x449/0x710
[ 9031.121581][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9031.121581][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.121581][T12167]      ___sys_sendmsg+0xee/0x170
[ 9031.121581][T12167]      __sys_sendmsg+0xcd/0x170
[ 9031.121581][T12167]      do_syscall_64+0xc6/0x1e0
[ 9031.121581][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.121581][T12167] 
[ 9031.123350][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9031.123350][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9031.123350][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9031.123350][T12167]      ipv6_find_idev+0x102/0x170
[ 9031.123350][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9031.123350][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.123350][T12167]      netlink_rcv_skb+0x130/0x360
[ 9031.123350][T12167]      netlink_unicast+0x449/0x710
[ 9031.123350][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9031.123350][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.123350][T12167]      ___sys_sendmsg+0xee/0x170
[ 9031.123350][T12167]      __sys_sendmsg+0xcd/0x170
[ 9031.123350][T12167]      do_syscall_64+0xc6/0x1e0
[ 9031.123350][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.123350][T12167] 
[ 9031.670715][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9031.671160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9031.671160][   T10]      dst_init+0x84/0x4a0
[ 9031.671160][   T10]      dst_alloc+0x97/0x150
[ 9031.671160][   T10]      ip6_dst_alloc+0x23/0x90
[ 9031.671160][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9031.671160][   T10]      ip6_pol_route+0x56f/0x840
[ 9031.671160][   T10]      fib6_rule_lookup+0x334/0x630
[ 9031.671160][   T10]      ip6_route_output_flags+0x259/0x480
[ 9031.671160][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9031.671160][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9031.671160][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9031.671160][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9031.671160][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.671160][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.671160][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.671160][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.671160][   T10] 
[ 9031.673065][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.673065][   T10]      dst_init+0x84/0x4a0
[ 9031.673065][   T10]      dst_alloc+0x97/0x150
[ 9031.673065][   T10]      ip6_dst_alloc+0x23/0x90
[ 9031.673065][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9031.673065][   T10]      ip6_pol_route+0x56f/0x840
[ 9031.673065][   T10]      fib6_rule_lookup+0x334/0x630
[ 9031.673065][   T10]      ip6_route_output_flags+0x259/0x480
[ 9031.673065][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9031.673065][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9031.673065][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9031.673065][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9031.673065][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9031.673065][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.673065][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.673065][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.673065][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.673065][   T10] 
[ 9031.675098][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.675098][   T10]      dst_init+0x84/0x4a0
[ 9031.675098][   T10]      dst_alloc+0x97/0x150
[ 9031.675098][   T10]      ip6_dst_alloc+0x23/0x90
[ 9031.675098][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9031.675098][   T10]      ip6_pol_route+0x56f/0x840
[ 9031.675098][   T10]      fib6_rule_lookup+0x334/0x630
[ 9031.675098][   T10]      ip6_route_output_flags+0x259/0x480
[ 9031.675098][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9031.675098][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9031.675098][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9031.675098][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9031.675098][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9031.675098][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.675098][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.675098][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.675098][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.675098][   T10] 
[ 9031.677127][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.677127][   T10]      netdev_get_by_index+0x5e/0x80
[ 9031.677127][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9031.677127][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9031.677127][   T10]      ip6_route_add+0x1c/0x140
[ 9031.677127][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9031.677127][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9031.677127][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9031.677127][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.677127][   T10]      netlink_rcv_skb+0x130/0x360
[ 9031.677127][   T10]      netlink_unicast+0x449/0x710
[ 9031.677127][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9031.677127][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.677127][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.677127][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.677127][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.677127][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.677127][   T10] 
[ 9031.679165][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.679165][   T10]      netdev_get_by_index+0x5e/0x80
[ 9031.679165][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9031.679165][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9031.679165][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9031.679165][   T10]      ipv6_add_addr+0x411/0x2000
[ 9031.679165][   T10]      inet6_addr_add+0x30e/0xa40
[ 9031.679165][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9031.679165][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.679165][   T10]      netlink_rcv_skb+0x130/0x360
[ 9031.679165][   T10]      netlink_unicast+0x449/0x710
[ 9031.679165][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9031.679165][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.679165][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.679165][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.679165][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.679165][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.679165][   T10] 
[ 9031.681195][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.681195][   T10]      netdev_get_by_index+0x5e/0x80
[ 9031.681195][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9031.681195][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9031.681195][   T10]      ip6_route_add+0x1c/0x140
[ 9031.681195][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9031.681195][   T10]      addrconf_add_dev+0xe2/0x170
[ 9031.681195][   T10]      inet6_addr_add+0x12f/0xa40
[ 9031.681195][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9031.681195][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.681195][   T10]      netlink_rcv_skb+0x130/0x360
[ 9031.681195][   T10]      netlink_unicast+0x449/0x710
[ 9031.681195][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9031.681195][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.681195][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.681195][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.681195][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.681195][   T10] 
[ 9031.683198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.683198][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9031.683198][   T10]      ipv6_find_idev+0x102/0x170
[ 9031.683198][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9031.683198][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.683198][   T10]      netlink_rcv_skb+0x130/0x360
[ 9031.683198][   T10]      netlink_unicast+0x449/0x710
[ 9031.683198][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9031.683198][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.683198][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.683198][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.683198][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.683198][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.683198][   T10] 
[ 9031.684757][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9031.684757][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9031.684757][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9031.684757][   T10]      ipv6_find_idev+0x102/0x170
[ 9031.684757][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9031.684757][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9031.684757][   T10]      netlink_rcv_skb+0x130/0x360
[ 9031.684757][   T10]      netlink_unicast+0x449/0x710
[ 9031.684757][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9031.684757][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9031.684757][   T10]      ___sys_sendmsg+0xee/0x170
[ 9031.684757][   T10]      __sys_sendmsg+0xcd/0x170
[ 9031.684757][   T10]      do_syscall_64+0xc6/0x1e0
[ 9031.684757][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9031.684757][   T10] 
[ 9041.158796][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9041.159293][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9041.159293][T12167]      netdev_get_by_index+0x5e/0x80
[ 9041.159293][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9041.159293][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9041.159293][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9041.159293][T12167]      ipv6_add_addr+0x411/0x2000
[ 9041.159293][T12167]      inet6_addr_add+0x30e/0xa40
[ 9041.159293][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9041.159293][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.159293][T12167]      netlink_rcv_skb+0x130/0x360
[ 9041.159293][T12167]      netlink_unicast+0x449/0x710
[ 9041.159293][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9041.159293][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.159293][T12167]      ___sys_sendmsg+0xee/0x170
[ 9041.159293][T12167]      __sys_sendmsg+0xcd/0x170
[ 9041.159293][T12167]      do_syscall_64+0xc6/0x1e0
[ 9041.159293][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.159293][T12167] 
[ 9041.161616][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9041.161616][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9041.161616][T12167]      ipv6_find_idev+0x102/0x170
[ 9041.161616][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9041.161616][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.161616][T12167]      netlink_rcv_skb+0x130/0x360
[ 9041.161616][T12167]      netlink_unicast+0x449/0x710
[ 9041.161616][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9041.161616][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.161616][T12167]      ___sys_sendmsg+0xee/0x170
[ 9041.161616][T12167]      __sys_sendmsg+0xcd/0x170
[ 9041.161616][T12167]      do_syscall_64+0xc6/0x1e0
[ 9041.161616][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.161616][T12167] 
[ 9041.163382][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9041.163382][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9041.163382][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9041.163382][T12167]      ipv6_find_idev+0x102/0x170
[ 9041.163382][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9041.163382][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.163382][T12167]      netlink_rcv_skb+0x130/0x360
[ 9041.163382][T12167]      netlink_unicast+0x449/0x710
[ 9041.163382][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9041.163382][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.163382][T12167]      ___sys_sendmsg+0xee/0x170
[ 9041.163382][T12167]      __sys_sendmsg+0xcd/0x170
[ 9041.163382][T12167]      do_syscall_64+0xc6/0x1e0
[ 9041.163382][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.163382][T12167] 
[ 9041.694803][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9041.695209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9041.695209][   T10]      dst_init+0x84/0x4a0
[ 9041.695209][   T10]      dst_alloc+0x97/0x150
[ 9041.695209][   T10]      ip6_dst_alloc+0x23/0x90
[ 9041.695209][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9041.695209][   T10]      ip6_pol_route+0x56f/0x840
[ 9041.695209][   T10]      fib6_rule_lookup+0x334/0x630
[ 9041.695209][   T10]      ip6_route_output_flags+0x259/0x480
[ 9041.695209][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9041.695209][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9041.695209][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9041.695209][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9041.695209][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.695209][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.695209][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.695209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.695209][   T10] 
[ 9041.697138][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.697138][   T10]      dst_init+0x84/0x4a0
[ 9041.697138][   T10]      dst_alloc+0x97/0x150
[ 9041.697138][   T10]      ip6_dst_alloc+0x23/0x90
[ 9041.697138][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9041.697138][   T10]      ip6_pol_route+0x56f/0x840
[ 9041.697138][   T10]      fib6_rule_lookup+0x334/0x630
[ 9041.697138][   T10]      ip6_route_output_flags+0x259/0x480
[ 9041.697138][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9041.697138][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9041.697138][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9041.697138][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9041.697138][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9041.697138][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.697138][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.697138][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.697138][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.697138][   T10] 
[ 9041.699163][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.699163][   T10]      dst_init+0x84/0x4a0
[ 9041.699163][   T10]      dst_alloc+0x97/0x150
[ 9041.699163][   T10]      ip6_dst_alloc+0x23/0x90
[ 9041.699163][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9041.699163][   T10]      ip6_pol_route+0x56f/0x840
[ 9041.699163][   T10]      fib6_rule_lookup+0x334/0x630
[ 9041.699163][   T10]      ip6_route_output_flags+0x259/0x480
[ 9041.699163][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9041.699163][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9041.699163][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9041.699163][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9041.699163][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9041.699163][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.699163][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.699163][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.699163][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.699163][   T10] 
[ 9041.701212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.701212][   T10]      netdev_get_by_index+0x5e/0x80
[ 9041.701212][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9041.701212][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9041.701212][   T10]      ip6_route_add+0x1c/0x140
[ 9041.701212][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9041.701212][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9041.701212][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9041.701212][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.701212][   T10]      netlink_rcv_skb+0x130/0x360
[ 9041.701212][   T10]      netlink_unicast+0x449/0x710
[ 9041.701212][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9041.701212][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.701212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.701212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.701212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.701212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.701212][   T10] 
[ 9041.703272][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.703272][   T10]      netdev_get_by_index+0x5e/0x80
[ 9041.703272][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9041.703272][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9041.703272][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9041.703272][   T10]      ipv6_add_addr+0x411/0x2000
[ 9041.703272][   T10]      inet6_addr_add+0x30e/0xa40
[ 9041.703272][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9041.703272][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.703272][   T10]      netlink_rcv_skb+0x130/0x360
[ 9041.703272][   T10]      netlink_unicast+0x449/0x710
[ 9041.703272][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9041.703272][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.703272][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.703272][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.703272][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.703272][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.703272][   T10] 
[ 9041.705323][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.705323][   T10]      netdev_get_by_index+0x5e/0x80
[ 9041.705323][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9041.705323][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9041.705323][   T10]      ip6_route_add+0x1c/0x140
[ 9041.705323][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9041.705323][   T10]      addrconf_add_dev+0xe2/0x170
[ 9041.705323][   T10]      inet6_addr_add+0x12f/0xa40
[ 9041.705323][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9041.705323][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.705323][   T10]      netlink_rcv_skb+0x130/0x360
[ 9041.705323][   T10]      netlink_unicast+0x449/0x710
[ 9041.705323][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9041.705323][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.705323][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.705323][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.705323][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.705323][   T10] 
[ 9041.707340][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.707340][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9041.707340][   T10]      ipv6_find_idev+0x102/0x170
[ 9041.707340][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9041.707340][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.707340][   T10]      netlink_rcv_skb+0x130/0x360
[ 9041.707340][   T10]      netlink_unicast+0x449/0x710
[ 9041.707340][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9041.707340][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.707340][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.707340][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.707340][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.707340][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.707340][   T10] 
[ 9041.708915][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9041.708915][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9041.708915][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9041.708915][   T10]      ipv6_find_idev+0x102/0x170
[ 9041.708915][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9041.708915][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9041.708915][   T10]      netlink_rcv_skb+0x130/0x360
[ 9041.708915][   T10]      netlink_unicast+0x449/0x710
[ 9041.708915][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9041.708915][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9041.708915][   T10]      ___sys_sendmsg+0xee/0x170
[ 9041.708915][   T10]      __sys_sendmsg+0xcd/0x170
[ 9041.708915][   T10]      do_syscall_64+0xc6/0x1e0
[ 9041.708915][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9041.708915][   T10] 
[ 9051.406799][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9051.407217][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9051.407217][T12167]      netdev_get_by_index+0x5e/0x80
[ 9051.407217][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9051.407217][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9051.407217][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9051.407217][T12167]      ipv6_add_addr+0x411/0x2000
[ 9051.407217][T12167]      inet6_addr_add+0x30e/0xa40
[ 9051.407217][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9051.407217][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.407217][T12167]      netlink_rcv_skb+0x130/0x360
[ 9051.407217][T12167]      netlink_unicast+0x449/0x710
[ 9051.407217][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9051.407217][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.407217][T12167]      ___sys_sendmsg+0xee/0x170
[ 9051.407217][T12167]      __sys_sendmsg+0xcd/0x170
[ 9051.407217][T12167]      do_syscall_64+0xc6/0x1e0
[ 9051.407217][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.407217][T12167] 
[ 9051.409520][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9051.409520][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9051.409520][T12167]      ipv6_find_idev+0x102/0x170
[ 9051.409520][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9051.409520][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.409520][T12167]      netlink_rcv_skb+0x130/0x360
[ 9051.409520][T12167]      netlink_unicast+0x449/0x710
[ 9051.409520][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9051.409520][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.409520][T12167]      ___sys_sendmsg+0xee/0x170
[ 9051.409520][T12167]      __sys_sendmsg+0xcd/0x170
[ 9051.409520][T12167]      do_syscall_64+0xc6/0x1e0
[ 9051.409520][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.409520][T12167] 
[ 9051.411254][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9051.411254][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9051.411254][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9051.411254][T12167]      ipv6_find_idev+0x102/0x170
[ 9051.411254][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9051.411254][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.411254][T12167]      netlink_rcv_skb+0x130/0x360
[ 9051.411254][T12167]      netlink_unicast+0x449/0x710
[ 9051.411254][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9051.411254][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.411254][T12167]      ___sys_sendmsg+0xee/0x170
[ 9051.411254][T12167]      __sys_sendmsg+0xcd/0x170
[ 9051.411254][T12167]      do_syscall_64+0xc6/0x1e0
[ 9051.411254][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.411254][T12167] 
[ 9051.950796][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9051.951202][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9051.951202][   T10]      dst_init+0x84/0x4a0
[ 9051.951202][   T10]      dst_alloc+0x97/0x150
[ 9051.951202][   T10]      ip6_dst_alloc+0x23/0x90
[ 9051.951202][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9051.951202][   T10]      ip6_pol_route+0x56f/0x840
[ 9051.951202][   T10]      fib6_rule_lookup+0x334/0x630
[ 9051.951202][   T10]      ip6_route_output_flags+0x259/0x480
[ 9051.951202][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9051.951202][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9051.951202][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9051.951202][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9051.951202][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.951202][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.951202][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.951202][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.951202][   T10] 
[ 9051.953122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.953122][   T10]      dst_init+0x84/0x4a0
[ 9051.953122][   T10]      dst_alloc+0x97/0x150
[ 9051.953122][   T10]      ip6_dst_alloc+0x23/0x90
[ 9051.953122][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9051.953122][   T10]      ip6_pol_route+0x56f/0x840
[ 9051.953122][   T10]      fib6_rule_lookup+0x334/0x630
[ 9051.953122][   T10]      ip6_route_output_flags+0x259/0x480
[ 9051.953122][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9051.953122][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9051.953122][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9051.953122][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9051.953122][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9051.953122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.953122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.953122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.953122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.953122][   T10] 
[ 9051.955114][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.955114][   T10]      dst_init+0x84/0x4a0
[ 9051.955114][   T10]      dst_alloc+0x97/0x150
[ 9051.955114][   T10]      ip6_dst_alloc+0x23/0x90
[ 9051.955114][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9051.955114][   T10]      ip6_pol_route+0x56f/0x840
[ 9051.955114][   T10]      fib6_rule_lookup+0x334/0x630
[ 9051.955114][   T10]      ip6_route_output_flags+0x259/0x480
[ 9051.955114][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9051.955114][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9051.955114][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9051.955114][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9051.955114][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9051.955114][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.955114][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.955114][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.955114][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.955114][   T10] 
[ 9051.957129][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.957129][   T10]      netdev_get_by_index+0x5e/0x80
[ 9051.957129][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9051.957129][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9051.957129][   T10]      ip6_route_add+0x1c/0x140
[ 9051.957129][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9051.957129][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9051.957129][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9051.957129][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.957129][   T10]      netlink_rcv_skb+0x130/0x360
[ 9051.957129][   T10]      netlink_unicast+0x449/0x710
[ 9051.957129][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9051.957129][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.957129][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.957129][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.957129][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.957129][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.957129][   T10] 
[ 9051.959166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.959166][   T10]      netdev_get_by_index+0x5e/0x80
[ 9051.959166][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9051.959166][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9051.959166][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9051.959166][   T10]      ipv6_add_addr+0x411/0x2000
[ 9051.959166][   T10]      inet6_addr_add+0x30e/0xa40
[ 9051.959166][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9051.959166][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.959166][   T10]      netlink_rcv_skb+0x130/0x360
[ 9051.959166][   T10]      netlink_unicast+0x449/0x710
[ 9051.959166][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9051.959166][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.959166][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.959166][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.959166][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.959166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.959166][   T10] 
[ 9051.961165][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.961165][   T10]      netdev_get_by_index+0x5e/0x80
[ 9051.961165][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9051.961165][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9051.961165][   T10]      ip6_route_add+0x1c/0x140
[ 9051.961165][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9051.961165][   T10]      addrconf_add_dev+0xe2/0x170
[ 9051.961165][   T10]      inet6_addr_add+0x12f/0xa40
[ 9051.961165][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9051.961165][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.961165][   T10]      netlink_rcv_skb+0x130/0x360
[ 9051.961165][   T10]      netlink_unicast+0x449/0x710
[ 9051.961165][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9051.961165][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.961165][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.961165][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.961165][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.961165][   T10] 
[ 9051.963137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.963137][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9051.963137][   T10]      ipv6_find_idev+0x102/0x170
[ 9051.963137][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9051.963137][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.963137][   T10]      netlink_rcv_skb+0x130/0x360
[ 9051.963137][   T10]      netlink_unicast+0x449/0x710
[ 9051.963137][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9051.963137][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.963137][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.963137][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.963137][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.963137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.963137][   T10] 
[ 9051.964681][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9051.964681][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9051.964681][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9051.964681][   T10]      ipv6_find_idev+0x102/0x170
[ 9051.964681][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9051.964681][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9051.964681][   T10]      netlink_rcv_skb+0x130/0x360
[ 9051.964681][   T10]      netlink_unicast+0x449/0x710
[ 9051.964681][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9051.964681][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9051.964681][   T10]      ___sys_sendmsg+0xee/0x170
[ 9051.964681][   T10]      __sys_sendmsg+0xcd/0x170
[ 9051.964681][   T10]      do_syscall_64+0xc6/0x1e0
[ 9051.964681][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9051.964681][   T10] 
[ 9061.654830][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9061.655249][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9061.655249][T12167]      netdev_get_by_index+0x5e/0x80
[ 9061.655249][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9061.655249][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9061.655249][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9061.655249][T12167]      ipv6_add_addr+0x411/0x2000
[ 9061.655249][T12167]      inet6_addr_add+0x30e/0xa40
[ 9061.655249][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9061.655249][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9061.655249][T12167]      netlink_rcv_skb+0x130/0x360
[ 9061.655249][T12167]      netlink_unicast+0x449/0x710
[ 9061.655249][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9061.655249][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9061.655249][T12167]      ___sys_sendmsg+0xee/0x170
[ 9061.655249][T12167]      __sys_sendmsg+0xcd/0x170
[ 9061.655249][T12167]      do_syscall_64+0xc6/0x1e0
[ 9061.655249][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9061.655249][T12167] 
[ 9061.657637][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9061.657637][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9061.657637][T12167]      ipv6_find_idev+0x102/0x170
[ 9061.657637][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9061.657637][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9061.657637][T12167]      netlink_rcv_skb+0x130/0x360
[ 9061.657637][T12167]      netlink_unicast+0x449/0x710
[ 9061.657637][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9061.657637][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9061.657637][T12167]      ___sys_sendmsg+0xee/0x170
[ 9061.657637][T12167]      __sys_sendmsg+0xcd/0x170
[ 9061.657637][T12167]      do_syscall_64+0xc6/0x1e0
[ 9061.657637][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9061.657637][T12167] 
[ 9061.659382][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9061.659382][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9061.659382][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9061.659382][T12167]      ipv6_find_idev+0x102/0x170
[ 9061.659382][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9061.659382][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9061.659382][T12167]      netlink_rcv_skb+0x130/0x360
[ 9061.659382][T12167]      netlink_unicast+0x449/0x710
[ 9061.659382][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9061.659382][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9061.659382][T12167]      ___sys_sendmsg+0xee/0x170
[ 9061.659382][T12167]      __sys_sendmsg+0xcd/0x170
[ 9061.659382][T12167]      do_syscall_64+0xc6/0x1e0
[ 9061.659382][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9061.659382][T12167] 
[ 9062.126847][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9062.127175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9062.127175][   T10]      dst_init+0x84/0x4a0
[ 9062.127175][   T10]      dst_alloc+0x97/0x150
[ 9062.127175][   T10]      ip6_dst_alloc+0x23/0x90
[ 9062.127175][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9062.127175][   T10]      ip6_pol_route+0x56f/0x840
[ 9062.127175][   T10]      fib6_rule_lookup+0x334/0x630
[ 9062.127175][   T10]      ip6_route_output_flags+0x259/0x480
[ 9062.127175][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9062.127175][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9062.127175][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9062.127175][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9062.127175][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.127175][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.127175][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.127175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.127175][   T10] 
[ 9062.129165][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.129165][   T10]      dst_init+0x84/0x4a0
[ 9062.129165][   T10]      dst_alloc+0x97/0x150
[ 9062.129165][   T10]      ip6_dst_alloc+0x23/0x90
[ 9062.129165][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9062.129165][   T10]      ip6_pol_route+0x56f/0x840
[ 9062.129165][   T10]      fib6_rule_lookup+0x334/0x630
[ 9062.129165][   T10]      ip6_route_output_flags+0x259/0x480
[ 9062.129165][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9062.129165][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9062.129165][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9062.129165][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9062.129165][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9062.129165][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.129165][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.129165][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.129165][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.129165][   T10] 
[ 9062.131156][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.131156][   T10]      dst_init+0x84/0x4a0
[ 9062.131156][   T10]      dst_alloc+0x97/0x150
[ 9062.131156][   T10]      ip6_dst_alloc+0x23/0x90
[ 9062.131156][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9062.131156][   T10]      ip6_pol_route+0x56f/0x840
[ 9062.131156][   T10]      fib6_rule_lookup+0x334/0x630
[ 9062.131156][   T10]      ip6_route_output_flags+0x259/0x480
[ 9062.131156][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9062.131156][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9062.131156][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9062.131156][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9062.131156][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9062.131156][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.131156][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.131156][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.131156][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.131156][   T10] 
[ 9062.133159][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.133159][   T10]      netdev_get_by_index+0x5e/0x80
[ 9062.133159][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9062.133159][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9062.133159][   T10]      ip6_route_add+0x1c/0x140
[ 9062.133159][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9062.133159][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9062.133159][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9062.133159][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9062.133159][   T10]      netlink_rcv_skb+0x130/0x360
[ 9062.133159][   T10]      netlink_unicast+0x449/0x710
[ 9062.133159][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9062.133159][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9062.133159][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.133159][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.133159][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.133159][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.133159][   T10] 
[ 9062.135164][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.135164][   T10]      netdev_get_by_index+0x5e/0x80
[ 9062.135164][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9062.135164][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9062.135164][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9062.135164][   T10]      ipv6_add_addr+0x411/0x2000
[ 9062.135164][   T10]      inet6_addr_add+0x30e/0xa40
[ 9062.135164][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9062.135164][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9062.135164][   T10]      netlink_rcv_skb+0x130/0x360
[ 9062.135164][   T10]      netlink_unicast+0x449/0x710
[ 9062.135164][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9062.135164][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9062.135164][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.135164][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.135164][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.135164][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.135164][   T10] 
[ 9062.137167][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.137167][   T10]      netdev_get_by_index+0x5e/0x80
[ 9062.137167][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9062.137167][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9062.137167][   T10]      ip6_route_add+0x1c/0x140
[ 9062.137167][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9062.137167][   T10]      addrconf_add_dev+0xe2/0x170
[ 9062.137167][   T10]      inet6_addr_add+0x12f/0xa40
[ 9062.137167][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9062.137167][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9062.137167][   T10]      netlink_rcv_skb+0x130/0x360
[ 9062.137167][   T10]      netlink_unicast+0x449/0x710
[ 9062.137167][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9062.137167][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9062.137167][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.137167][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.137167][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.137167][   T10] 
[ 9062.139133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.139133][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9062.139133][   T10]      ipv6_find_idev+0x102/0x170
[ 9062.139133][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9062.139133][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9062.139133][   T10]      netlink_rcv_skb+0x130/0x360
[ 9062.139133][   T10]      netlink_unicast+0x449/0x710
[ 9062.139133][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9062.139133][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9062.139133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.139133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.139133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.139133][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.139133][   T10] 
[ 9062.140674][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9062.140674][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9062.140674][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9062.140674][   T10]      ipv6_find_idev+0x102/0x170
[ 9062.140674][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9062.140674][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9062.140674][   T10]      netlink_rcv_skb+0x130/0x360
[ 9062.140674][   T10]      netlink_unicast+0x449/0x710
[ 9062.140674][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9062.140674][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9062.140674][   T10]      ___sys_sendmsg+0xee/0x170
[ 9062.140674][   T10]      __sys_sendmsg+0xcd/0x170
[ 9062.140674][   T10]      do_syscall_64+0xc6/0x1e0
[ 9062.140674][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9062.140674][   T10] 
[ 9071.902800][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9071.903327][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9071.903327][T12167]      netdev_get_by_index+0x5e/0x80
[ 9071.903327][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9071.903327][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9071.903327][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9071.903327][T12167]      ipv6_add_addr+0x411/0x2000
[ 9071.903327][T12167]      inet6_addr_add+0x30e/0xa40
[ 9071.903327][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9071.903327][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9071.903327][T12167]      netlink_rcv_skb+0x130/0x360
[ 9071.903327][T12167]      netlink_unicast+0x449/0x710
[ 9071.903327][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9071.903327][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9071.903327][T12167]      ___sys_sendmsg+0xee/0x170
[ 9071.903327][T12167]      __sys_sendmsg+0xcd/0x170
[ 9071.903327][T12167]      do_syscall_64+0xc6/0x1e0
[ 9071.903327][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9071.903327][T12167] 
[ 9071.905594][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9071.905594][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9071.905594][T12167]      ipv6_find_idev+0x102/0x170
[ 9071.905594][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9071.905594][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9071.905594][T12167]      netlink_rcv_skb+0x130/0x360
[ 9071.905594][T12167]      netlink_unicast+0x449/0x710
[ 9071.905594][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9071.905594][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9071.905594][T12167]      ___sys_sendmsg+0xee/0x170
[ 9071.905594][T12167]      __sys_sendmsg+0xcd/0x170
[ 9071.905594][T12167]      do_syscall_64+0xc6/0x1e0
[ 9071.905594][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9071.905594][T12167] 
[ 9071.907328][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9071.907328][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9071.907328][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9071.907328][T12167]      ipv6_find_idev+0x102/0x170
[ 9071.907328][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9071.907328][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9071.907328][T12167]      netlink_rcv_skb+0x130/0x360
[ 9071.907328][T12167]      netlink_unicast+0x449/0x710
[ 9071.907328][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9071.907328][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9071.907328][T12167]      ___sys_sendmsg+0xee/0x170
[ 9071.907328][T12167]      __sys_sendmsg+0xcd/0x170
[ 9071.907328][T12167]      do_syscall_64+0xc6/0x1e0
[ 9071.907328][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9071.907328][T12167] 
[ 9072.390841][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9072.391253][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9072.391253][   T10]      dst_init+0x84/0x4a0
[ 9072.391253][   T10]      dst_alloc+0x97/0x150
[ 9072.391253][   T10]      ip6_dst_alloc+0x23/0x90
[ 9072.391253][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9072.391253][   T10]      ip6_pol_route+0x56f/0x840
[ 9072.391253][   T10]      fib6_rule_lookup+0x334/0x630
[ 9072.391253][   T10]      ip6_route_output_flags+0x259/0x480
[ 9072.391253][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9072.391253][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9072.391253][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9072.391253][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9072.391253][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.391253][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.391253][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.391253][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.391253][   T10] 
[ 9072.393155][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.393155][   T10]      dst_init+0x84/0x4a0
[ 9072.393155][   T10]      dst_alloc+0x97/0x150
[ 9072.393155][   T10]      ip6_dst_alloc+0x23/0x90
[ 9072.393155][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9072.393155][   T10]      ip6_pol_route+0x56f/0x840
[ 9072.393155][   T10]      fib6_rule_lookup+0x334/0x630
[ 9072.393155][   T10]      ip6_route_output_flags+0x259/0x480
[ 9072.393155][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9072.393155][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9072.393155][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9072.393155][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9072.393155][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9072.393155][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.393155][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.393155][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.393155][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.393155][   T10] 
[ 9072.395147][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.395147][   T10]      dst_init+0x84/0x4a0
[ 9072.395147][   T10]      dst_alloc+0x97/0x150
[ 9072.395147][   T10]      ip6_dst_alloc+0x23/0x90
[ 9072.395147][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9072.395147][   T10]      ip6_pol_route+0x56f/0x840
[ 9072.395147][   T10]      fib6_rule_lookup+0x334/0x630
[ 9072.395147][   T10]      ip6_route_output_flags+0x259/0x480
[ 9072.395147][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9072.395147][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9072.395147][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9072.395147][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9072.395147][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9072.395147][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.395147][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.395147][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.395147][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.395147][   T10] 
[ 9072.397145][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.397145][   T10]      netdev_get_by_index+0x5e/0x80
[ 9072.397145][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9072.397145][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9072.397145][   T10]      ip6_route_add+0x1c/0x140
[ 9072.397145][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9072.397145][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9072.397145][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9072.397145][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9072.397145][   T10]      netlink_rcv_skb+0x130/0x360
[ 9072.397145][   T10]      netlink_unicast+0x449/0x710
[ 9072.397145][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9072.397145][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9072.397145][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.397145][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.397145][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.397145][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.397145][   T10] 
[ 9072.399157][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.399157][   T10]      netdev_get_by_index+0x5e/0x80
[ 9072.399157][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9072.399157][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9072.399157][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9072.399157][   T10]      ipv6_add_addr+0x411/0x2000
[ 9072.399157][   T10]      inet6_addr_add+0x30e/0xa40
[ 9072.399157][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9072.399157][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9072.399157][   T10]      netlink_rcv_skb+0x130/0x360
[ 9072.399157][   T10]      netlink_unicast+0x449/0x710
[ 9072.399157][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9072.399157][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9072.399157][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.399157][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.399157][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.399157][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.399157][   T10] 
[ 9072.401169][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.401169][   T10]      netdev_get_by_index+0x5e/0x80
[ 9072.401169][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9072.401169][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9072.401169][   T10]      ip6_route_add+0x1c/0x140
[ 9072.401169][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9072.401169][   T10]      addrconf_add_dev+0xe2/0x170
[ 9072.401169][   T10]      inet6_addr_add+0x12f/0xa40
[ 9072.401169][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9072.401169][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9072.401169][   T10]      netlink_rcv_skb+0x130/0x360
[ 9072.401169][   T10]      netlink_unicast+0x449/0x710
[ 9072.401169][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9072.401169][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9072.401169][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.401169][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.401169][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.401169][   T10] 
[ 9072.403146][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.403146][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9072.403146][   T10]      ipv6_find_idev+0x102/0x170
[ 9072.403146][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9072.403146][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9072.403146][   T10]      netlink_rcv_skb+0x130/0x360
[ 9072.403146][   T10]      netlink_unicast+0x449/0x710
[ 9072.403146][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9072.403146][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9072.403146][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.403146][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.403146][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.403146][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.403146][   T10] 
[ 9072.404692][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9072.404692][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9072.404692][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9072.404692][   T10]      ipv6_find_idev+0x102/0x170
[ 9072.404692][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9072.404692][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9072.404692][   T10]      netlink_rcv_skb+0x130/0x360
[ 9072.404692][   T10]      netlink_unicast+0x449/0x710
[ 9072.404692][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9072.404692][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9072.404692][   T10]      ___sys_sendmsg+0xee/0x170
[ 9072.404692][   T10]      __sys_sendmsg+0xcd/0x170
[ 9072.404692][   T10]      do_syscall_64+0xc6/0x1e0
[ 9072.404692][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9072.404692][   T10] 
[ 9082.150722][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9082.151225][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9082.151225][T12167]      netdev_get_by_index+0x5e/0x80
[ 9082.151225][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9082.151225][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9082.151225][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9082.151225][T12167]      ipv6_add_addr+0x411/0x2000
[ 9082.151225][T12167]      inet6_addr_add+0x30e/0xa40
[ 9082.151225][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9082.151225][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.151225][T12167]      netlink_rcv_skb+0x130/0x360
[ 9082.151225][T12167]      netlink_unicast+0x449/0x710
[ 9082.151225][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9082.151225][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.151225][T12167]      ___sys_sendmsg+0xee/0x170
[ 9082.151225][T12167]      __sys_sendmsg+0xcd/0x170
[ 9082.151225][T12167]      do_syscall_64+0xc6/0x1e0
[ 9082.151225][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.151225][T12167] 
[ 9082.153506][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9082.153506][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9082.153506][T12167]      ipv6_find_idev+0x102/0x170
[ 9082.153506][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9082.153506][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.153506][T12167]      netlink_rcv_skb+0x130/0x360
[ 9082.153506][T12167]      netlink_unicast+0x449/0x710
[ 9082.153506][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9082.153506][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.153506][T12167]      ___sys_sendmsg+0xee/0x170
[ 9082.153506][T12167]      __sys_sendmsg+0xcd/0x170
[ 9082.153506][T12167]      do_syscall_64+0xc6/0x1e0
[ 9082.153506][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.153506][T12167] 
[ 9082.155252][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9082.155252][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9082.155252][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9082.155252][T12167]      ipv6_find_idev+0x102/0x170
[ 9082.155252][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9082.155252][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.155252][T12167]      netlink_rcv_skb+0x130/0x360
[ 9082.155252][T12167]      netlink_unicast+0x449/0x710
[ 9082.155252][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9082.155252][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.155252][T12167]      ___sys_sendmsg+0xee/0x170
[ 9082.155252][T12167]      __sys_sendmsg+0xcd/0x170
[ 9082.155252][T12167]      do_syscall_64+0xc6/0x1e0
[ 9082.155252][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.155252][T12167] 
[ 9082.422896][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9082.423310][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9082.423310][   T10]      dst_init+0x84/0x4a0
[ 9082.423310][   T10]      dst_alloc+0x97/0x150
[ 9082.423310][   T10]      ip6_dst_alloc+0x23/0x90
[ 9082.423310][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9082.423310][   T10]      ip6_pol_route+0x56f/0x840
[ 9082.423310][   T10]      fib6_rule_lookup+0x334/0x630
[ 9082.423310][   T10]      ip6_route_output_flags+0x259/0x480
[ 9082.423310][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9082.423310][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9082.423310][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9082.423310][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9082.423310][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.423310][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.423310][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.423310][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.423310][   T10] 
[ 9082.425207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.425207][   T10]      dst_init+0x84/0x4a0
[ 9082.425207][   T10]      dst_alloc+0x97/0x150
[ 9082.425207][   T10]      ip6_dst_alloc+0x23/0x90
[ 9082.425207][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9082.425207][   T10]      ip6_pol_route+0x56f/0x840
[ 9082.425207][   T10]      fib6_rule_lookup+0x334/0x630
[ 9082.425207][   T10]      ip6_route_output_flags+0x259/0x480
[ 9082.425207][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9082.425207][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9082.425207][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9082.425207][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9082.425207][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9082.425207][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.425207][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.425207][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.425207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.425207][   T10] 
[ 9082.427211][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.427211][   T10]      dst_init+0x84/0x4a0
[ 9082.427211][   T10]      dst_alloc+0x97/0x150
[ 9082.427211][   T10]      ip6_dst_alloc+0x23/0x90
[ 9082.427211][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9082.427211][   T10]      ip6_pol_route+0x56f/0x840
[ 9082.427211][   T10]      fib6_rule_lookup+0x334/0x630
[ 9082.427211][   T10]      ip6_route_output_flags+0x259/0x480
[ 9082.427211][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9082.427211][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9082.427211][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9082.427211][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9082.427211][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9082.427211][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.427211][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.427211][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.427211][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.427211][   T10] 
[ 9082.429211][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.429211][   T10]      netdev_get_by_index+0x5e/0x80
[ 9082.429211][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9082.429211][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9082.429211][   T10]      ip6_route_add+0x1c/0x140
[ 9082.429211][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9082.429211][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9082.429211][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9082.429211][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.429211][   T10]      netlink_rcv_skb+0x130/0x360
[ 9082.429211][   T10]      netlink_unicast+0x449/0x710
[ 9082.429211][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9082.429211][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.429211][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.429211][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.429211][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.429211][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.429211][   T10] 
[ 9082.431214][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.431214][   T10]      netdev_get_by_index+0x5e/0x80
[ 9082.431214][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9082.431214][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9082.431214][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9082.431214][   T10]      ipv6_add_addr+0x411/0x2000
[ 9082.431214][   T10]      inet6_addr_add+0x30e/0xa40
[ 9082.431214][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9082.431214][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.431214][   T10]      netlink_rcv_skb+0x130/0x360
[ 9082.431214][   T10]      netlink_unicast+0x449/0x710
[ 9082.431214][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9082.431214][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.431214][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.431214][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.431214][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.431214][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.431214][   T10] 
[ 9082.433239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.433239][   T10]      netdev_get_by_index+0x5e/0x80
[ 9082.433239][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9082.433239][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9082.433239][   T10]      ip6_route_add+0x1c/0x140
[ 9082.433239][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9082.433239][   T10]      addrconf_add_dev+0xe2/0x170
[ 9082.433239][   T10]      inet6_addr_add+0x12f/0xa40
[ 9082.433239][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9082.433239][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.433239][   T10]      netlink_rcv_skb+0x130/0x360
[ 9082.433239][   T10]      netlink_unicast+0x449/0x710
[ 9082.433239][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9082.433239][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.433239][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.433239][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.433239][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.433239][   T10] 
[ 9082.435213][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.435213][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9082.435213][   T10]      ipv6_find_idev+0x102/0x170
[ 9082.435213][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9082.435213][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.435213][   T10]      netlink_rcv_skb+0x130/0x360
[ 9082.435213][   T10]      netlink_unicast+0x449/0x710
[ 9082.435213][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9082.435213][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.435213][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.435213][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.435213][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.435213][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.435213][   T10] 
[ 9082.436763][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9082.436763][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9082.436763][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9082.436763][   T10]      ipv6_find_idev+0x102/0x170
[ 9082.436763][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9082.436763][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9082.436763][   T10]      netlink_rcv_skb+0x130/0x360
[ 9082.436763][   T10]      netlink_unicast+0x449/0x710
[ 9082.436763][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9082.436763][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9082.436763][   T10]      ___sys_sendmsg+0xee/0x170
[ 9082.436763][   T10]      __sys_sendmsg+0xcd/0x170
[ 9082.436763][   T10]      do_syscall_64+0xc6/0x1e0
[ 9082.436763][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9082.436763][   T10] 
[ 9092.398870][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9092.399397][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9092.399397][T12167]      netdev_get_by_index+0x5e/0x80
[ 9092.399397][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9092.399397][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9092.399397][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9092.399397][T12167]      ipv6_add_addr+0x411/0x2000
[ 9092.399397][T12167]      inet6_addr_add+0x30e/0xa40
[ 9092.399397][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9092.399397][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.399397][T12167]      netlink_rcv_skb+0x130/0x360
[ 9092.399397][T12167]      netlink_unicast+0x449/0x710
[ 9092.399397][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9092.399397][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.399397][T12167]      ___sys_sendmsg+0xee/0x170
[ 9092.399397][T12167]      __sys_sendmsg+0xcd/0x170
[ 9092.399397][T12167]      do_syscall_64+0xc6/0x1e0
[ 9092.399397][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.399397][T12167] 
[ 9092.401717][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9092.401717][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9092.401717][T12167]      ipv6_find_idev+0x102/0x170
[ 9092.401717][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9092.401717][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.401717][T12167]      netlink_rcv_skb+0x130/0x360
[ 9092.401717][T12167]      netlink_unicast+0x449/0x710
[ 9092.401717][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9092.401717][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.401717][T12167]      ___sys_sendmsg+0xee/0x170
[ 9092.401717][T12167]      __sys_sendmsg+0xcd/0x170
[ 9092.401717][T12167]      do_syscall_64+0xc6/0x1e0
[ 9092.401717][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.401717][T12167] 
[ 9092.403493][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9092.403493][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9092.403493][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9092.403493][T12167]      ipv6_find_idev+0x102/0x170
[ 9092.403493][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9092.403493][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.403493][T12167]      netlink_rcv_skb+0x130/0x360
[ 9092.403493][T12167]      netlink_unicast+0x449/0x710
[ 9092.403493][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9092.403493][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.403493][T12167]      ___sys_sendmsg+0xee/0x170
[ 9092.403493][T12167]      __sys_sendmsg+0xcd/0x170
[ 9092.403493][T12167]      do_syscall_64+0xc6/0x1e0
[ 9092.403493][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.403493][T12167] 
[ 9092.686829][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9092.687235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9092.687235][   T10]      dst_init+0x84/0x4a0
[ 9092.687235][   T10]      dst_alloc+0x97/0x150
[ 9092.687235][   T10]      ip6_dst_alloc+0x23/0x90
[ 9092.687235][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9092.687235][   T10]      ip6_pol_route+0x56f/0x840
[ 9092.687235][   T10]      fib6_rule_lookup+0x334/0x630
[ 9092.687235][   T10]      ip6_route_output_flags+0x259/0x480
[ 9092.687235][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9092.687235][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9092.687235][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9092.687235][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9092.687235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.687235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.687235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.687235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.687235][   T10] 
[ 9092.689130][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.689130][   T10]      dst_init+0x84/0x4a0
[ 9092.689130][   T10]      dst_alloc+0x97/0x150
[ 9092.689130][   T10]      ip6_dst_alloc+0x23/0x90
[ 9092.689130][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9092.689130][   T10]      ip6_pol_route+0x56f/0x840
[ 9092.689130][   T10]      fib6_rule_lookup+0x334/0x630
[ 9092.689130][   T10]      ip6_route_output_flags+0x259/0x480
[ 9092.689130][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9092.689130][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9092.689130][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9092.689130][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9092.689130][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9092.689130][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.689130][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.689130][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.689130][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.689130][   T10] 
[ 9092.691141][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.691141][   T10]      dst_init+0x84/0x4a0
[ 9092.691141][   T10]      dst_alloc+0x97/0x150
[ 9092.691141][   T10]      ip6_dst_alloc+0x23/0x90
[ 9092.691141][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9092.691141][   T10]      ip6_pol_route+0x56f/0x840
[ 9092.691141][   T10]      fib6_rule_lookup+0x334/0x630
[ 9092.691141][   T10]      ip6_route_output_flags+0x259/0x480
[ 9092.691141][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9092.691141][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9092.691141][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9092.691141][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9092.691141][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9092.691141][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.691141][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.691141][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.691141][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.691141][   T10] 
[ 9092.693197][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.693197][   T10]      netdev_get_by_index+0x5e/0x80
[ 9092.693197][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9092.693197][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9092.693197][   T10]      ip6_route_add+0x1c/0x140
[ 9092.693197][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9092.693197][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9092.693197][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9092.693197][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.693197][   T10]      netlink_rcv_skb+0x130/0x360
[ 9092.693197][   T10]      netlink_unicast+0x449/0x710
[ 9092.693197][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9092.693197][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.693197][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.693197][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.693197][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.693197][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.693197][   T10] 
[ 9092.695207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.695207][   T10]      netdev_get_by_index+0x5e/0x80
[ 9092.695207][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9092.695207][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9092.695207][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9092.695207][   T10]      ipv6_add_addr+0x411/0x2000
[ 9092.695207][   T10]      inet6_addr_add+0x30e/0xa40
[ 9092.695207][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9092.695207][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.695207][   T10]      netlink_rcv_skb+0x130/0x360
[ 9092.695207][   T10]      netlink_unicast+0x449/0x710
[ 9092.695207][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9092.695207][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.695207][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.695207][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.695207][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.695207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.695207][   T10] 
[ 9092.697207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.697207][   T10]      netdev_get_by_index+0x5e/0x80
[ 9092.697207][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9092.697207][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9092.697207][   T10]      ip6_route_add+0x1c/0x140
[ 9092.697207][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9092.697207][   T10]      addrconf_add_dev+0xe2/0x170
[ 9092.697207][   T10]      inet6_addr_add+0x12f/0xa40
[ 9092.697207][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9092.697207][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.697207][   T10]      netlink_rcv_skb+0x130/0x360
[ 9092.697207][   T10]      netlink_unicast+0x449/0x710
[ 9092.697207][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9092.697207][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.697207][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.697207][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.697207][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.697207][   T10] 
[ 9092.699176][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.699176][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9092.699176][   T10]      ipv6_find_idev+0x102/0x170
[ 9092.699176][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9092.699176][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.699176][   T10]      netlink_rcv_skb+0x130/0x360
[ 9092.699176][   T10]      netlink_unicast+0x449/0x710
[ 9092.699176][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9092.699176][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.699176][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.699176][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.699176][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.699176][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.699176][   T10] 
[ 9092.700720][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9092.700720][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9092.700720][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9092.700720][   T10]      ipv6_find_idev+0x102/0x170
[ 9092.700720][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9092.700720][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9092.700720][   T10]      netlink_rcv_skb+0x130/0x360
[ 9092.700720][   T10]      netlink_unicast+0x449/0x710
[ 9092.700720][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9092.700720][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9092.700720][   T10]      ___sys_sendmsg+0xee/0x170
[ 9092.700720][   T10]      __sys_sendmsg+0xcd/0x170
[ 9092.700720][   T10]      do_syscall_64+0xc6/0x1e0
[ 9092.700720][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9092.700720][   T10] 
[ 9094.438835][   T42] INFO: task modprobe:12646 blocked for more than 368 seconds.
[ 9094.439118][   T42]       Not tainted 6.8.0-virtme #1
[ 9094.439237][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9094.439437][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9094.439742][   T42] Call Trace:
[ 9094.439837][   T42]  <TASK>
[ 9094.439907][   T42]  __schedule+0x705/0x1ac0
[ 9094.440049][   T42]  ? __pfx___schedule+0x10/0x10
[ 9094.440172][   T42]  ? schedule+0x1a5/0x210
[ 9094.440268][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9094.440398][   T42]  ? mark_lock+0x38/0x3e0
[ 9094.440510][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9094.440640][   T42]  ? schedule+0x1a5/0x210
[ 9094.440749][   T42]  schedule+0xdf/0x210
[ 9094.440844][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9094.440973][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9094.441102][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9094.441259][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9094.441383][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9094.441513][   T42]  ? lock_acquire+0x1c1/0x220
[ 9094.441635][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9094.441777][   T42]  down_write+0x1c9/0x200
[ 9094.441872][   T42]  ? __pfx_down_write+0x10/0x10
[ 9094.442003][   T42]  ? __pfx__printk+0x10/0x10
[ 9094.442148][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9094.442277][   T42]  register_pernet_subsys+0x1a/0x50
[ 9094.442400][   T42]  tcf_register_action+0xa3/0x600
[ 9094.442527][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9094.442686][   T42]  do_one_initcall+0xc8/0x3f0
[ 9094.442828][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9094.442964][   T42]  ? __create_object+0x5e/0xb0
[ 9094.443097][   T42]  ? kasan_unpoison+0x27/0x60
[ 9094.443226][   T42]  do_init_module+0x233/0x740
[ 9094.443360][   T42]  load_module+0x16b5/0x2350
[ 9094.443496][   T42]  ? __pfx_load_module+0x10/0x10
[ 9094.443620][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9094.443761][   T42]  ? kernel_read_file+0x300/0x520
[ 9094.443888][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9094.444020][   T42]  ? init_module_from_file+0xd2/0x130
[ 9094.444143][   T42]  init_module_from_file+0xd2/0x130
[ 9094.444271][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9094.444423][   T42]  ? __lock_release+0x103/0x460
[ 9094.444551][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9094.444685][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9094.444817][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9094.444945][   T42]  idempotent_init_module+0x342/0x620
[ 9094.445072][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9094.445249][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9094.445383][   T42]  do_syscall_64+0xc6/0x1e0
[ 9094.445510][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9094.445664][   T42] RIP: 0033:0x7fac120f1e5d
[ 9094.445798][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9094.445985][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9094.446173][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9094.446357][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9094.446538][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9094.446731][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9094.446930][   T42]  </TASK>
[ 9094.447024][   T42] 
[ 9094.447024][   T42] Showing all locks held in the system:
[ 9094.447207][   T42] 3 locks held by kworker/u16:0/10:
[ 9094.447326][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9094.447575][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9094.447803][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9094.448026][   T42] 1 lock held by khungtaskd/42:
[ 9094.448149][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9094.448367][   T42] 2 locks held by kworker/u17:1/44:
[ 9094.448487][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9094.448737][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9094.449022][   T42] 1 lock held by modprobe/12646:
[ 9094.449141][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9094.449389][   T42] 
[ 9094.449449][   T42] =============================================
[ 9094.449449][   T42] 
[ 9102.646869][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9102.647411][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9102.647411][T12167]      netdev_get_by_index+0x5e/0x80
[ 9102.647411][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9102.647411][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9102.647411][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9102.647411][T12167]      ipv6_add_addr+0x411/0x2000
[ 9102.647411][T12167]      inet6_addr_add+0x30e/0xa40
[ 9102.647411][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9102.647411][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.647411][T12167]      netlink_rcv_skb+0x130/0x360
[ 9102.647411][T12167]      netlink_unicast+0x449/0x710
[ 9102.647411][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9102.647411][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.647411][T12167]      ___sys_sendmsg+0xee/0x170
[ 9102.647411][T12167]      __sys_sendmsg+0xcd/0x170
[ 9102.647411][T12167]      do_syscall_64+0xc6/0x1e0
[ 9102.647411][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.647411][T12167] 
[ 9102.649724][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9102.649724][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9102.649724][T12167]      ipv6_find_idev+0x102/0x170
[ 9102.649724][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9102.649724][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.649724][T12167]      netlink_rcv_skb+0x130/0x360
[ 9102.649724][T12167]      netlink_unicast+0x449/0x710
[ 9102.649724][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9102.649724][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.649724][T12167]      ___sys_sendmsg+0xee/0x170
[ 9102.649724][T12167]      __sys_sendmsg+0xcd/0x170
[ 9102.649724][T12167]      do_syscall_64+0xc6/0x1e0
[ 9102.649724][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.649724][T12167] 
[ 9102.651495][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9102.651495][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9102.651495][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9102.651495][T12167]      ipv6_find_idev+0x102/0x170
[ 9102.651495][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9102.651495][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.651495][T12167]      netlink_rcv_skb+0x130/0x360
[ 9102.651495][T12167]      netlink_unicast+0x449/0x710
[ 9102.651495][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9102.651495][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.651495][T12167]      ___sys_sendmsg+0xee/0x170
[ 9102.651495][T12167]      __sys_sendmsg+0xcd/0x170
[ 9102.651495][T12167]      do_syscall_64+0xc6/0x1e0
[ 9102.651495][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.651495][T12167] 
[ 9102.942923][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9102.943338][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9102.943338][   T10]      dst_init+0x84/0x4a0
[ 9102.943338][   T10]      dst_alloc+0x97/0x150
[ 9102.943338][   T10]      ip6_dst_alloc+0x23/0x90
[ 9102.943338][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9102.943338][   T10]      ip6_pol_route+0x56f/0x840
[ 9102.943338][   T10]      fib6_rule_lookup+0x334/0x630
[ 9102.943338][   T10]      ip6_route_output_flags+0x259/0x480
[ 9102.943338][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9102.943338][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9102.943338][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9102.943338][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9102.943338][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.943338][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.943338][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.943338][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.943338][   T10] 
[ 9102.945237][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.945237][   T10]      dst_init+0x84/0x4a0
[ 9102.945237][   T10]      dst_alloc+0x97/0x150
[ 9102.945237][   T10]      ip6_dst_alloc+0x23/0x90
[ 9102.945237][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9102.945237][   T10]      ip6_pol_route+0x56f/0x840
[ 9102.945237][   T10]      fib6_rule_lookup+0x334/0x630
[ 9102.945237][   T10]      ip6_route_output_flags+0x259/0x480
[ 9102.945237][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9102.945237][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9102.945237][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9102.945237][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9102.945237][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9102.945237][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.945237][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.945237][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.945237][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.945237][   T10] 
[ 9102.947239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.947239][   T10]      dst_init+0x84/0x4a0
[ 9102.947239][   T10]      dst_alloc+0x97/0x150
[ 9102.947239][   T10]      ip6_dst_alloc+0x23/0x90
[ 9102.947239][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9102.947239][   T10]      ip6_pol_route+0x56f/0x840
[ 9102.947239][   T10]      fib6_rule_lookup+0x334/0x630
[ 9102.947239][   T10]      ip6_route_output_flags+0x259/0x480
[ 9102.947239][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9102.947239][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9102.947239][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9102.947239][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9102.947239][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9102.947239][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.947239][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.947239][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.947239][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.947239][   T10] 
[ 9102.949241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.949241][   T10]      netdev_get_by_index+0x5e/0x80
[ 9102.949241][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9102.949241][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9102.949241][   T10]      ip6_route_add+0x1c/0x140
[ 9102.949241][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9102.949241][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9102.949241][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9102.949241][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.949241][   T10]      netlink_rcv_skb+0x130/0x360
[ 9102.949241][   T10]      netlink_unicast+0x449/0x710
[ 9102.949241][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9102.949241][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.949241][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.949241][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.949241][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.949241][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.949241][   T10] 
[ 9102.951242][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.951242][   T10]      netdev_get_by_index+0x5e/0x80
[ 9102.951242][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9102.951242][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9102.951242][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9102.951242][   T10]      ipv6_add_addr+0x411/0x2000
[ 9102.951242][   T10]      inet6_addr_add+0x30e/0xa40
[ 9102.951242][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9102.951242][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.951242][   T10]      netlink_rcv_skb+0x130/0x360
[ 9102.951242][   T10]      netlink_unicast+0x449/0x710
[ 9102.951242][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9102.951242][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.951242][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.951242][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.951242][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.951242][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.951242][   T10] 
[ 9102.953250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.953250][   T10]      netdev_get_by_index+0x5e/0x80
[ 9102.953250][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9102.953250][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9102.953250][   T10]      ip6_route_add+0x1c/0x140
[ 9102.953250][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9102.953250][   T10]      addrconf_add_dev+0xe2/0x170
[ 9102.953250][   T10]      inet6_addr_add+0x12f/0xa40
[ 9102.953250][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9102.953250][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.953250][   T10]      netlink_rcv_skb+0x130/0x360
[ 9102.953250][   T10]      netlink_unicast+0x449/0x710
[ 9102.953250][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9102.953250][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.953250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.953250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.953250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.953250][   T10] 
[ 9102.955213][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.955213][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9102.955213][   T10]      ipv6_find_idev+0x102/0x170
[ 9102.955213][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9102.955213][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.955213][   T10]      netlink_rcv_skb+0x130/0x360
[ 9102.955213][   T10]      netlink_unicast+0x449/0x710
[ 9102.955213][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9102.955213][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.955213][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.955213][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.955213][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.955213][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.955213][   T10] 
[ 9102.956753][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9102.956753][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9102.956753][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9102.956753][   T10]      ipv6_find_idev+0x102/0x170
[ 9102.956753][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9102.956753][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9102.956753][   T10]      netlink_rcv_skb+0x130/0x360
[ 9102.956753][   T10]      netlink_unicast+0x449/0x710
[ 9102.956753][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9102.956753][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9102.956753][   T10]      ___sys_sendmsg+0xee/0x170
[ 9102.956753][   T10]      __sys_sendmsg+0xcd/0x170
[ 9102.956753][   T10]      do_syscall_64+0xc6/0x1e0
[ 9102.956753][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9102.956753][   T10] 
[ 9112.894897][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9112.895412][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9112.895412][T12167]      netdev_get_by_index+0x5e/0x80
[ 9112.895412][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9112.895412][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9112.895412][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9112.895412][T12167]      ipv6_add_addr+0x411/0x2000
[ 9112.895412][T12167]      inet6_addr_add+0x30e/0xa40
[ 9112.895412][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9112.895412][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9112.895412][T12167]      netlink_rcv_skb+0x130/0x360
[ 9112.895412][T12167]      netlink_unicast+0x449/0x710
[ 9112.895412][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9112.895412][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9112.895412][T12167]      ___sys_sendmsg+0xee/0x170
[ 9112.895412][T12167]      __sys_sendmsg+0xcd/0x170
[ 9112.895412][T12167]      do_syscall_64+0xc6/0x1e0
[ 9112.895412][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9112.895412][T12167] 
[ 9112.897722][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9112.897722][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9112.897722][T12167]      ipv6_find_idev+0x102/0x170
[ 9112.897722][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9112.897722][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9112.897722][T12167]      netlink_rcv_skb+0x130/0x360
[ 9112.897722][T12167]      netlink_unicast+0x449/0x710
[ 9112.897722][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9112.897722][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9112.897722][T12167]      ___sys_sendmsg+0xee/0x170
[ 9112.897722][T12167]      __sys_sendmsg+0xcd/0x170
[ 9112.897722][T12167]      do_syscall_64+0xc6/0x1e0
[ 9112.897722][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9112.897722][T12167] 
[ 9112.899481][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9112.899481][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9112.899481][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9112.899481][T12167]      ipv6_find_idev+0x102/0x170
[ 9112.899481][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9112.899481][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9112.899481][T12167]      netlink_rcv_skb+0x130/0x360
[ 9112.899481][T12167]      netlink_unicast+0x449/0x710
[ 9112.899481][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9112.899481][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9112.899481][T12167]      ___sys_sendmsg+0xee/0x170
[ 9112.899481][T12167]      __sys_sendmsg+0xcd/0x170
[ 9112.899481][T12167]      do_syscall_64+0xc6/0x1e0
[ 9112.899481][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9112.899481][T12167] 
[ 9113.198801][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9113.199198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9113.199198][   T10]      dst_init+0x84/0x4a0
[ 9113.199198][   T10]      dst_alloc+0x97/0x150
[ 9113.199198][   T10]      ip6_dst_alloc+0x23/0x90
[ 9113.199198][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9113.199198][   T10]      ip6_pol_route+0x56f/0x840
[ 9113.199198][   T10]      fib6_rule_lookup+0x334/0x630
[ 9113.199198][   T10]      ip6_route_output_flags+0x259/0x480
[ 9113.199198][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9113.199198][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9113.199198][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9113.199198][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9113.199198][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.199198][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.199198][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.199198][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.199198][   T10] 
[ 9113.201244][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.201244][   T10]      dst_init+0x84/0x4a0
[ 9113.201244][   T10]      dst_alloc+0x97/0x150
[ 9113.201244][   T10]      ip6_dst_alloc+0x23/0x90
[ 9113.201244][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9113.201244][   T10]      ip6_pol_route+0x56f/0x840
[ 9113.201244][   T10]      fib6_rule_lookup+0x334/0x630
[ 9113.201244][   T10]      ip6_route_output_flags+0x259/0x480
[ 9113.201244][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9113.201244][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9113.201244][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9113.201244][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9113.201244][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9113.201244][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.201244][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.201244][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.201244][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.201244][   T10] 
[ 9113.203242][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.203242][   T10]      dst_init+0x84/0x4a0
[ 9113.203242][   T10]      dst_alloc+0x97/0x150
[ 9113.203242][   T10]      ip6_dst_alloc+0x23/0x90
[ 9113.203242][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9113.203242][   T10]      ip6_pol_route+0x56f/0x840
[ 9113.203242][   T10]      fib6_rule_lookup+0x334/0x630
[ 9113.203242][   T10]      ip6_route_output_flags+0x259/0x480
[ 9113.203242][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9113.203242][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9113.203242][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9113.203242][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9113.203242][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9113.203242][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.203242][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.203242][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.203242][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.203242][   T10] 
[ 9113.205235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.205235][   T10]      netdev_get_by_index+0x5e/0x80
[ 9113.205235][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9113.205235][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9113.205235][   T10]      ip6_route_add+0x1c/0x140
[ 9113.205235][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9113.205235][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9113.205235][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9113.205235][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9113.205235][   T10]      netlink_rcv_skb+0x130/0x360
[ 9113.205235][   T10]      netlink_unicast+0x449/0x710
[ 9113.205235][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9113.205235][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9113.205235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.205235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.205235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.205235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.205235][   T10] 
[ 9113.207233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.207233][   T10]      netdev_get_by_index+0x5e/0x80
[ 9113.207233][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9113.207233][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9113.207233][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9113.207233][   T10]      ipv6_add_addr+0x411/0x2000
[ 9113.207233][   T10]      inet6_addr_add+0x30e/0xa40
[ 9113.207233][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9113.207233][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9113.207233][   T10]      netlink_rcv_skb+0x130/0x360
[ 9113.207233][   T10]      netlink_unicast+0x449/0x710
[ 9113.207233][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9113.207233][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9113.207233][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.207233][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.207233][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.207233][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.207233][   T10] 
[ 9113.209228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.209228][   T10]      netdev_get_by_index+0x5e/0x80
[ 9113.209228][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9113.209228][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9113.209228][   T10]      ip6_route_add+0x1c/0x140
[ 9113.209228][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9113.209228][   T10]      addrconf_add_dev+0xe2/0x170
[ 9113.209228][   T10]      inet6_addr_add+0x12f/0xa40
[ 9113.209228][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9113.209228][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9113.209228][   T10]      netlink_rcv_skb+0x130/0x360
[ 9113.209228][   T10]      netlink_unicast+0x449/0x710
[ 9113.209228][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9113.209228][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9113.209228][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.209228][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.209228][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.209228][   T10] 
[ 9113.211197][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.211197][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9113.211197][   T10]      ipv6_find_idev+0x102/0x170
[ 9113.211197][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9113.211197][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9113.211197][   T10]      netlink_rcv_skb+0x130/0x360
[ 9113.211197][   T10]      netlink_unicast+0x449/0x710
[ 9113.211197][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9113.211197][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9113.211197][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.211197][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.211197][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.211197][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.211197][   T10] 
[ 9113.212739][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9113.212739][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9113.212739][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9113.212739][   T10]      ipv6_find_idev+0x102/0x170
[ 9113.212739][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9113.212739][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9113.212739][   T10]      netlink_rcv_skb+0x130/0x360
[ 9113.212739][   T10]      netlink_unicast+0x449/0x710
[ 9113.212739][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9113.212739][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9113.212739][   T10]      ___sys_sendmsg+0xee/0x170
[ 9113.212739][   T10]      __sys_sendmsg+0xcd/0x170
[ 9113.212739][   T10]      do_syscall_64+0xc6/0x1e0
[ 9113.212739][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9113.212739][   T10] 
[ 9123.142882][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9123.143317][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9123.143317][T12167]      netdev_get_by_index+0x5e/0x80
[ 9123.143317][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9123.143317][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9123.143317][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9123.143317][T12167]      ipv6_add_addr+0x411/0x2000
[ 9123.143317][T12167]      inet6_addr_add+0x30e/0xa40
[ 9123.143317][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9123.143317][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.143317][T12167]      netlink_rcv_skb+0x130/0x360
[ 9123.143317][T12167]      netlink_unicast+0x449/0x710
[ 9123.143317][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9123.143317][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.143317][T12167]      ___sys_sendmsg+0xee/0x170
[ 9123.143317][T12167]      __sys_sendmsg+0xcd/0x170
[ 9123.143317][T12167]      do_syscall_64+0xc6/0x1e0
[ 9123.143317][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.143317][T12167] 
[ 9123.145623][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9123.145623][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9123.145623][T12167]      ipv6_find_idev+0x102/0x170
[ 9123.145623][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9123.145623][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.145623][T12167]      netlink_rcv_skb+0x130/0x360
[ 9123.145623][T12167]      netlink_unicast+0x449/0x710
[ 9123.145623][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9123.145623][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.145623][T12167]      ___sys_sendmsg+0xee/0x170
[ 9123.145623][T12167]      __sys_sendmsg+0xcd/0x170
[ 9123.145623][T12167]      do_syscall_64+0xc6/0x1e0
[ 9123.145623][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.145623][T12167] 
[ 9123.147358][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9123.147358][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9123.147358][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9123.147358][T12167]      ipv6_find_idev+0x102/0x170
[ 9123.147358][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9123.147358][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.147358][T12167]      netlink_rcv_skb+0x130/0x360
[ 9123.147358][T12167]      netlink_unicast+0x449/0x710
[ 9123.147358][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9123.147358][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.147358][T12167]      ___sys_sendmsg+0xee/0x170
[ 9123.147358][T12167]      __sys_sendmsg+0xcd/0x170
[ 9123.147358][T12167]      do_syscall_64+0xc6/0x1e0
[ 9123.147358][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.147358][T12167] 
[ 9123.454877][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9123.455291][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9123.455291][   T10]      dst_init+0x84/0x4a0
[ 9123.455291][   T10]      dst_alloc+0x97/0x150
[ 9123.455291][   T10]      ip6_dst_alloc+0x23/0x90
[ 9123.455291][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9123.455291][   T10]      ip6_pol_route+0x56f/0x840
[ 9123.455291][   T10]      fib6_rule_lookup+0x334/0x630
[ 9123.455291][   T10]      ip6_route_output_flags+0x259/0x480
[ 9123.455291][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9123.455291][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9123.455291][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9123.455291][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9123.455291][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.455291][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.455291][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.455291][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.455291][   T10] 
[ 9123.457239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.457239][   T10]      dst_init+0x84/0x4a0
[ 9123.457239][   T10]      dst_alloc+0x97/0x150
[ 9123.457239][   T10]      ip6_dst_alloc+0x23/0x90
[ 9123.457239][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9123.457239][   T10]      ip6_pol_route+0x56f/0x840
[ 9123.457239][   T10]      fib6_rule_lookup+0x334/0x630
[ 9123.457239][   T10]      ip6_route_output_flags+0x259/0x480
[ 9123.457239][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9123.457239][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9123.457239][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9123.457239][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9123.457239][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9123.457239][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.457239][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.457239][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.457239][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.457239][   T10] 
[ 9123.459247][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.459247][   T10]      dst_init+0x84/0x4a0
[ 9123.459247][   T10]      dst_alloc+0x97/0x150
[ 9123.459247][   T10]      ip6_dst_alloc+0x23/0x90
[ 9123.459247][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9123.459247][   T10]      ip6_pol_route+0x56f/0x840
[ 9123.459247][   T10]      fib6_rule_lookup+0x334/0x630
[ 9123.459247][   T10]      ip6_route_output_flags+0x259/0x480
[ 9123.459247][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9123.459247][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9123.459247][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9123.459247][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9123.459247][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9123.459247][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.459247][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.459247][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.459247][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.459247][   T10] 
[ 9123.461254][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.461254][   T10]      netdev_get_by_index+0x5e/0x80
[ 9123.461254][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9123.461254][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9123.461254][   T10]      ip6_route_add+0x1c/0x140
[ 9123.461254][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9123.461254][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9123.461254][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9123.461254][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.461254][   T10]      netlink_rcv_skb+0x130/0x360
[ 9123.461254][   T10]      netlink_unicast+0x449/0x710
[ 9123.461254][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9123.461254][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.461254][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.461254][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.461254][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.461254][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.461254][   T10] 
[ 9123.463278][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.463278][   T10]      netdev_get_by_index+0x5e/0x80
[ 9123.463278][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9123.463278][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9123.463278][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9123.463278][   T10]      ipv6_add_addr+0x411/0x2000
[ 9123.463278][   T10]      inet6_addr_add+0x30e/0xa40
[ 9123.463278][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9123.463278][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.463278][   T10]      netlink_rcv_skb+0x130/0x360
[ 9123.463278][   T10]      netlink_unicast+0x449/0x710
[ 9123.463278][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9123.463278][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.463278][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.463278][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.463278][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.463278][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.463278][   T10] 
[ 9123.465295][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.465295][   T10]      netdev_get_by_index+0x5e/0x80
[ 9123.465295][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9123.465295][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9123.465295][   T10]      ip6_route_add+0x1c/0x140
[ 9123.465295][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9123.465295][   T10]      addrconf_add_dev+0xe2/0x170
[ 9123.465295][   T10]      inet6_addr_add+0x12f/0xa40
[ 9123.465295][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9123.465295][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.465295][   T10]      netlink_rcv_skb+0x130/0x360
[ 9123.465295][   T10]      netlink_unicast+0x449/0x710
[ 9123.465295][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9123.465295][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.465295][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.465295][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.465295][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.465295][   T10] 
[ 9123.467274][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.467274][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9123.467274][   T10]      ipv6_find_idev+0x102/0x170
[ 9123.467274][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9123.467274][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.467274][   T10]      netlink_rcv_skb+0x130/0x360
[ 9123.467274][   T10]      netlink_unicast+0x449/0x710
[ 9123.467274][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9123.467274][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.467274][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.467274][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.467274][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.467274][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.467274][   T10] 
[ 9123.468826][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9123.468826][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9123.468826][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9123.468826][   T10]      ipv6_find_idev+0x102/0x170
[ 9123.468826][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9123.468826][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9123.468826][   T10]      netlink_rcv_skb+0x130/0x360
[ 9123.468826][   T10]      netlink_unicast+0x449/0x710
[ 9123.468826][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9123.468826][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9123.468826][   T10]      ___sys_sendmsg+0xee/0x170
[ 9123.468826][   T10]      __sys_sendmsg+0xcd/0x170
[ 9123.468826][   T10]      do_syscall_64+0xc6/0x1e0
[ 9123.468826][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9123.468826][   T10] 
[ 9133.398838][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9133.399340][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9133.399340][T12167]      netdev_get_by_index+0x5e/0x80
[ 9133.399340][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9133.399340][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9133.399340][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9133.399340][T12167]      ipv6_add_addr+0x411/0x2000
[ 9133.399340][T12167]      inet6_addr_add+0x30e/0xa40
[ 9133.399340][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9133.399340][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.399340][T12167]      netlink_rcv_skb+0x130/0x360
[ 9133.399340][T12167]      netlink_unicast+0x449/0x710
[ 9133.399340][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9133.399340][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.399340][T12167]      ___sys_sendmsg+0xee/0x170
[ 9133.399340][T12167]      __sys_sendmsg+0xcd/0x170
[ 9133.399340][T12167]      do_syscall_64+0xc6/0x1e0
[ 9133.399340][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.399340][T12167] 
[ 9133.401607][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9133.401607][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9133.401607][T12167]      ipv6_find_idev+0x102/0x170
[ 9133.401607][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9133.401607][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.401607][T12167]      netlink_rcv_skb+0x130/0x360
[ 9133.401607][T12167]      netlink_unicast+0x449/0x710
[ 9133.401607][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9133.401607][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.401607][T12167]      ___sys_sendmsg+0xee/0x170
[ 9133.401607][T12167]      __sys_sendmsg+0xcd/0x170
[ 9133.401607][T12167]      do_syscall_64+0xc6/0x1e0
[ 9133.401607][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.401607][T12167] 
[ 9133.403356][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9133.403356][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9133.403356][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9133.403356][T12167]      ipv6_find_idev+0x102/0x170
[ 9133.403356][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9133.403356][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.403356][T12167]      netlink_rcv_skb+0x130/0x360
[ 9133.403356][T12167]      netlink_unicast+0x449/0x710
[ 9133.403356][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9133.403356][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.403356][T12167]      ___sys_sendmsg+0xee/0x170
[ 9133.403356][T12167]      __sys_sendmsg+0xcd/0x170
[ 9133.403356][T12167]      do_syscall_64+0xc6/0x1e0
[ 9133.403356][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.403356][T12167] 
[ 9133.654873][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9133.655322][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9133.655322][   T10]      dst_init+0x84/0x4a0
[ 9133.655322][   T10]      dst_alloc+0x97/0x150
[ 9133.655322][   T10]      ip6_dst_alloc+0x23/0x90
[ 9133.655322][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9133.655322][   T10]      ip6_pol_route+0x56f/0x840
[ 9133.655322][   T10]      fib6_rule_lookup+0x334/0x630
[ 9133.655322][   T10]      ip6_route_output_flags+0x259/0x480
[ 9133.655322][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9133.655322][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9133.655322][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9133.655322][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9133.655322][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.655322][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.655322][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.655322][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.655322][   T10] 
[ 9133.657237][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.657237][   T10]      dst_init+0x84/0x4a0
[ 9133.657237][   T10]      dst_alloc+0x97/0x150
[ 9133.657237][   T10]      ip6_dst_alloc+0x23/0x90
[ 9133.657237][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9133.657237][   T10]      ip6_pol_route+0x56f/0x840
[ 9133.657237][   T10]      fib6_rule_lookup+0x334/0x630
[ 9133.657237][   T10]      ip6_route_output_flags+0x259/0x480
[ 9133.657237][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9133.657237][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9133.657237][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9133.657237][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9133.657237][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9133.657237][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.657237][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.657237][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.657237][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.657237][   T10] 
[ 9133.659247][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.659247][   T10]      dst_init+0x84/0x4a0
[ 9133.659247][   T10]      dst_alloc+0x97/0x150
[ 9133.659247][   T10]      ip6_dst_alloc+0x23/0x90
[ 9133.659247][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9133.659247][   T10]      ip6_pol_route+0x56f/0x840
[ 9133.659247][   T10]      fib6_rule_lookup+0x334/0x630
[ 9133.659247][   T10]      ip6_route_output_flags+0x259/0x480
[ 9133.659247][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9133.659247][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9133.659247][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9133.659247][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9133.659247][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9133.659247][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.659247][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.659247][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.659247][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.659247][   T10] 
[ 9133.661259][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.661259][   T10]      netdev_get_by_index+0x5e/0x80
[ 9133.661259][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9133.661259][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9133.661259][   T10]      ip6_route_add+0x1c/0x140
[ 9133.661259][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9133.661259][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9133.661259][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9133.661259][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.661259][   T10]      netlink_rcv_skb+0x130/0x360
[ 9133.661259][   T10]      netlink_unicast+0x449/0x710
[ 9133.661259][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9133.661259][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.661259][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.661259][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.661259][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.661259][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.661259][   T10] 
[ 9133.663289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.663289][   T10]      netdev_get_by_index+0x5e/0x80
[ 9133.663289][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9133.663289][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9133.663289][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9133.663289][   T10]      ipv6_add_addr+0x411/0x2000
[ 9133.663289][   T10]      inet6_addr_add+0x30e/0xa40
[ 9133.663289][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9133.663289][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.663289][   T10]      netlink_rcv_skb+0x130/0x360
[ 9133.663289][   T10]      netlink_unicast+0x449/0x710
[ 9133.663289][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9133.663289][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.663289][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.663289][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.663289][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.663289][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.663289][   T10] 
[ 9133.665298][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.665298][   T10]      netdev_get_by_index+0x5e/0x80
[ 9133.665298][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9133.665298][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9133.665298][   T10]      ip6_route_add+0x1c/0x140
[ 9133.665298][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9133.665298][   T10]      addrconf_add_dev+0xe2/0x170
[ 9133.665298][   T10]      inet6_addr_add+0x12f/0xa40
[ 9133.665298][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9133.665298][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.665298][   T10]      netlink_rcv_skb+0x130/0x360
[ 9133.665298][   T10]      netlink_unicast+0x449/0x710
[ 9133.665298][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9133.665298][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.665298][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.665298][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.665298][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.665298][   T10] 
[ 9133.667279][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.667279][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9133.667279][   T10]      ipv6_find_idev+0x102/0x170
[ 9133.667279][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9133.667279][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.667279][   T10]      netlink_rcv_skb+0x130/0x360
[ 9133.667279][   T10]      netlink_unicast+0x449/0x710
[ 9133.667279][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9133.667279][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.667279][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.667279][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.667279][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.667279][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.667279][   T10] 
[ 9133.668830][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9133.668830][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9133.668830][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9133.668830][   T10]      ipv6_find_idev+0x102/0x170
[ 9133.668830][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9133.668830][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9133.668830][   T10]      netlink_rcv_skb+0x130/0x360
[ 9133.668830][   T10]      netlink_unicast+0x449/0x710
[ 9133.668830][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9133.668830][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9133.668830][   T10]      ___sys_sendmsg+0xee/0x170
[ 9133.668830][   T10]      __sys_sendmsg+0xcd/0x170
[ 9133.668830][   T10]      do_syscall_64+0xc6/0x1e0
[ 9133.668830][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9133.668830][   T10] 
[ 9143.630831][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9143.631268][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9143.631268][T12167]      netdev_get_by_index+0x5e/0x80
[ 9143.631268][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9143.631268][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9143.631268][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9143.631268][T12167]      ipv6_add_addr+0x411/0x2000
[ 9143.631268][T12167]      inet6_addr_add+0x30e/0xa40
[ 9143.631268][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9143.631268][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.631268][T12167]      netlink_rcv_skb+0x130/0x360
[ 9143.631268][T12167]      netlink_unicast+0x449/0x710
[ 9143.631268][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9143.631268][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.631268][T12167]      ___sys_sendmsg+0xee/0x170
[ 9143.631268][T12167]      __sys_sendmsg+0xcd/0x170
[ 9143.631268][T12167]      do_syscall_64+0xc6/0x1e0
[ 9143.631268][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.631268][T12167] 
[ 9143.633547][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9143.633547][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9143.633547][T12167]      ipv6_find_idev+0x102/0x170
[ 9143.633547][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9143.633547][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.633547][T12167]      netlink_rcv_skb+0x130/0x360
[ 9143.633547][T12167]      netlink_unicast+0x449/0x710
[ 9143.633547][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9143.633547][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.633547][T12167]      ___sys_sendmsg+0xee/0x170
[ 9143.633547][T12167]      __sys_sendmsg+0xcd/0x170
[ 9143.633547][T12167]      do_syscall_64+0xc6/0x1e0
[ 9143.633547][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.633547][T12167] 
[ 9143.635285][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9143.635285][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9143.635285][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9143.635285][T12167]      ipv6_find_idev+0x102/0x170
[ 9143.635285][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9143.635285][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.635285][T12167]      netlink_rcv_skb+0x130/0x360
[ 9143.635285][T12167]      netlink_unicast+0x449/0x710
[ 9143.635285][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9143.635285][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.635285][T12167]      ___sys_sendmsg+0xee/0x170
[ 9143.635285][T12167]      __sys_sendmsg+0xcd/0x170
[ 9143.635285][T12167]      do_syscall_64+0xc6/0x1e0
[ 9143.635285][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.635285][T12167] 
[ 9143.886801][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9143.887204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9143.887204][   T10]      dst_init+0x84/0x4a0
[ 9143.887204][   T10]      dst_alloc+0x97/0x150
[ 9143.887204][   T10]      ip6_dst_alloc+0x23/0x90
[ 9143.887204][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9143.887204][   T10]      ip6_pol_route+0x56f/0x840
[ 9143.887204][   T10]      fib6_rule_lookup+0x334/0x630
[ 9143.887204][   T10]      ip6_route_output_flags+0x259/0x480
[ 9143.887204][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9143.887204][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9143.887204][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9143.887204][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9143.887204][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.887204][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.887204][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.887204][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.887204][   T10] 
[ 9143.889119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.889119][   T10]      dst_init+0x84/0x4a0
[ 9143.889119][   T10]      dst_alloc+0x97/0x150
[ 9143.889119][   T10]      ip6_dst_alloc+0x23/0x90
[ 9143.889119][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9143.889119][   T10]      ip6_pol_route+0x56f/0x840
[ 9143.889119][   T10]      fib6_rule_lookup+0x334/0x630
[ 9143.889119][   T10]      ip6_route_output_flags+0x259/0x480
[ 9143.889119][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9143.889119][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9143.889119][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9143.889119][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9143.889119][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9143.889119][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.889119][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.889119][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.889119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.889119][   T10] 
[ 9143.891126][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.891126][   T10]      dst_init+0x84/0x4a0
[ 9143.891126][   T10]      dst_alloc+0x97/0x150
[ 9143.891126][   T10]      ip6_dst_alloc+0x23/0x90
[ 9143.891126][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9143.891126][   T10]      ip6_pol_route+0x56f/0x840
[ 9143.891126][   T10]      fib6_rule_lookup+0x334/0x630
[ 9143.891126][   T10]      ip6_route_output_flags+0x259/0x480
[ 9143.891126][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9143.891126][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9143.891126][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9143.891126][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9143.891126][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9143.891126][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.891126][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.891126][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.891126][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.891126][   T10] 
[ 9143.893156][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.893156][   T10]      netdev_get_by_index+0x5e/0x80
[ 9143.893156][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9143.893156][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9143.893156][   T10]      ip6_route_add+0x1c/0x140
[ 9143.893156][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9143.893156][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9143.893156][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9143.893156][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.893156][   T10]      netlink_rcv_skb+0x130/0x360
[ 9143.893156][   T10]      netlink_unicast+0x449/0x710
[ 9143.893156][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9143.893156][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.893156][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.893156][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.893156][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.893156][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.893156][   T10] 
[ 9143.895187][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.895187][   T10]      netdev_get_by_index+0x5e/0x80
[ 9143.895187][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9143.895187][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9143.895187][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9143.895187][   T10]      ipv6_add_addr+0x411/0x2000
[ 9143.895187][   T10]      inet6_addr_add+0x30e/0xa40
[ 9143.895187][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9143.895187][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.895187][   T10]      netlink_rcv_skb+0x130/0x360
[ 9143.895187][   T10]      netlink_unicast+0x449/0x710
[ 9143.895187][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9143.895187][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.895187][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.895187][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.895187][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.895187][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.895187][   T10] 
[ 9143.897216][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.897216][   T10]      netdev_get_by_index+0x5e/0x80
[ 9143.897216][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9143.897216][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9143.897216][   T10]      ip6_route_add+0x1c/0x140
[ 9143.897216][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9143.897216][   T10]      addrconf_add_dev+0xe2/0x170
[ 9143.897216][   T10]      inet6_addr_add+0x12f/0xa40
[ 9143.897216][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9143.897216][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.897216][   T10]      netlink_rcv_skb+0x130/0x360
[ 9143.897216][   T10]      netlink_unicast+0x449/0x710
[ 9143.897216][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9143.897216][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.897216][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.897216][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.897216][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.897216][   T10] 
[ 9143.899212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.899212][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9143.899212][   T10]      ipv6_find_idev+0x102/0x170
[ 9143.899212][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9143.899212][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.899212][   T10]      netlink_rcv_skb+0x130/0x360
[ 9143.899212][   T10]      netlink_unicast+0x449/0x710
[ 9143.899212][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9143.899212][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.899212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.899212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.899212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.899212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.899212][   T10] 
[ 9143.900766][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9143.900766][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9143.900766][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9143.900766][   T10]      ipv6_find_idev+0x102/0x170
[ 9143.900766][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9143.900766][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9143.900766][   T10]      netlink_rcv_skb+0x130/0x360
[ 9143.900766][   T10]      netlink_unicast+0x449/0x710
[ 9143.900766][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9143.900766][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9143.900766][   T10]      ___sys_sendmsg+0xee/0x170
[ 9143.900766][   T10]      __sys_sendmsg+0xcd/0x170
[ 9143.900766][   T10]      do_syscall_64+0xc6/0x1e0
[ 9143.900766][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9143.900766][   T10] 
[ 9153.878870][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9153.879361][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9153.879361][T12167]      netdev_get_by_index+0x5e/0x80
[ 9153.879361][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9153.879361][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9153.879361][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9153.879361][T12167]      ipv6_add_addr+0x411/0x2000
[ 9153.879361][T12167]      inet6_addr_add+0x30e/0xa40
[ 9153.879361][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9153.879361][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9153.879361][T12167]      netlink_rcv_skb+0x130/0x360
[ 9153.879361][T12167]      netlink_unicast+0x449/0x710
[ 9153.879361][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9153.879361][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9153.879361][T12167]      ___sys_sendmsg+0xee/0x170
[ 9153.879361][T12167]      __sys_sendmsg+0xcd/0x170
[ 9153.879361][T12167]      do_syscall_64+0xc6/0x1e0
[ 9153.879361][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9153.879361][T12167] 
[ 9153.881644][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9153.881644][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9153.881644][T12167]      ipv6_find_idev+0x102/0x170
[ 9153.881644][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9153.881644][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9153.881644][T12167]      netlink_rcv_skb+0x130/0x360
[ 9153.881644][T12167]      netlink_unicast+0x449/0x710
[ 9153.881644][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9153.881644][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9153.881644][T12167]      ___sys_sendmsg+0xee/0x170
[ 9153.881644][T12167]      __sys_sendmsg+0xcd/0x170
[ 9153.881644][T12167]      do_syscall_64+0xc6/0x1e0
[ 9153.881644][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9153.881644][T12167] 
[ 9153.883407][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9153.883407][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9153.883407][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9153.883407][T12167]      ipv6_find_idev+0x102/0x170
[ 9153.883407][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9153.883407][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9153.883407][T12167]      netlink_rcv_skb+0x130/0x360
[ 9153.883407][T12167]      netlink_unicast+0x449/0x710
[ 9153.883407][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9153.883407][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9153.883407][T12167]      ___sys_sendmsg+0xee/0x170
[ 9153.883407][T12167]      __sys_sendmsg+0xcd/0x170
[ 9153.883407][T12167]      do_syscall_64+0xc6/0x1e0
[ 9153.883407][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9153.883407][T12167] 
[ 9154.142806][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9154.143201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9154.143201][   T10]      dst_init+0x84/0x4a0
[ 9154.143201][   T10]      dst_alloc+0x97/0x150
[ 9154.143201][   T10]      ip6_dst_alloc+0x23/0x90
[ 9154.143201][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9154.143201][   T10]      ip6_pol_route+0x56f/0x840
[ 9154.143201][   T10]      fib6_rule_lookup+0x334/0x630
[ 9154.143201][   T10]      ip6_route_output_flags+0x259/0x480
[ 9154.143201][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9154.143201][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9154.143201][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9154.143201][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9154.143201][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.143201][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.143201][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.143201][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.143201][   T10] 
[ 9154.145083][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.145083][   T10]      dst_init+0x84/0x4a0
[ 9154.145083][   T10]      dst_alloc+0x97/0x150
[ 9154.145083][   T10]      ip6_dst_alloc+0x23/0x90
[ 9154.145083][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9154.145083][   T10]      ip6_pol_route+0x56f/0x840
[ 9154.145083][   T10]      fib6_rule_lookup+0x334/0x630
[ 9154.145083][   T10]      ip6_route_output_flags+0x259/0x480
[ 9154.145083][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9154.145083][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9154.145083][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9154.145083][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9154.145083][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9154.145083][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.145083][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.145083][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.145083][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.145083][   T10] 
[ 9154.147074][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.147074][   T10]      dst_init+0x84/0x4a0
[ 9154.147074][   T10]      dst_alloc+0x97/0x150
[ 9154.147074][   T10]      ip6_dst_alloc+0x23/0x90
[ 9154.147074][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9154.147074][   T10]      ip6_pol_route+0x56f/0x840
[ 9154.147074][   T10]      fib6_rule_lookup+0x334/0x630
[ 9154.147074][   T10]      ip6_route_output_flags+0x259/0x480
[ 9154.147074][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9154.147074][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9154.147074][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9154.147074][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9154.147074][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9154.147074][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.147074][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.147074][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.147074][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.147074][   T10] 
[ 9154.149068][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.149068][   T10]      netdev_get_by_index+0x5e/0x80
[ 9154.149068][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9154.149068][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9154.149068][   T10]      ip6_route_add+0x1c/0x140
[ 9154.149068][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9154.149068][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9154.149068][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9154.149068][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9154.149068][   T10]      netlink_rcv_skb+0x130/0x360
[ 9154.149068][   T10]      netlink_unicast+0x449/0x710
[ 9154.149068][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9154.149068][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9154.149068][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.149068][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.149068][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.149068][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.149068][   T10] 
[ 9154.151067][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.151067][   T10]      netdev_get_by_index+0x5e/0x80
[ 9154.151067][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9154.151067][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9154.151067][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9154.151067][   T10]      ipv6_add_addr+0x411/0x2000
[ 9154.151067][   T10]      inet6_addr_add+0x30e/0xa40
[ 9154.151067][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9154.151067][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9154.151067][   T10]      netlink_rcv_skb+0x130/0x360
[ 9154.151067][   T10]      netlink_unicast+0x449/0x710
[ 9154.151067][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9154.151067][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9154.151067][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.151067][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.151067][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.151067][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.151067][   T10] 
[ 9154.153083][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.153083][   T10]      netdev_get_by_index+0x5e/0x80
[ 9154.153083][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9154.153083][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9154.153083][   T10]      ip6_route_add+0x1c/0x140
[ 9154.153083][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9154.153083][   T10]      addrconf_add_dev+0xe2/0x170
[ 9154.153083][   T10]      inet6_addr_add+0x12f/0xa40
[ 9154.153083][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9154.153083][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9154.153083][   T10]      netlink_rcv_skb+0x130/0x360
[ 9154.153083][   T10]      netlink_unicast+0x449/0x710
[ 9154.153083][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9154.153083][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9154.153083][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.153083][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.153083][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.153083][   T10] 
[ 9154.155182][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.155182][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9154.155182][   T10]      ipv6_find_idev+0x102/0x170
[ 9154.155182][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9154.155182][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9154.155182][   T10]      netlink_rcv_skb+0x130/0x360
[ 9154.155182][   T10]      netlink_unicast+0x449/0x710
[ 9154.155182][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9154.155182][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9154.155182][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.155182][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.155182][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.155182][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.155182][   T10] 
[ 9154.156730][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9154.156730][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9154.156730][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9154.156730][   T10]      ipv6_find_idev+0x102/0x170
[ 9154.156730][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9154.156730][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9154.156730][   T10]      netlink_rcv_skb+0x130/0x360
[ 9154.156730][   T10]      netlink_unicast+0x449/0x710
[ 9154.156730][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9154.156730][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9154.156730][   T10]      ___sys_sendmsg+0xee/0x170
[ 9154.156730][   T10]      __sys_sendmsg+0xcd/0x170
[ 9154.156730][   T10]      do_syscall_64+0xc6/0x1e0
[ 9154.156730][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9154.156730][   T10] 
[ 9164.126838][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9164.127335][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9164.127335][T12167]      netdev_get_by_index+0x5e/0x80
[ 9164.127335][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9164.127335][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9164.127335][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9164.127335][T12167]      ipv6_add_addr+0x411/0x2000
[ 9164.127335][T12167]      inet6_addr_add+0x30e/0xa40
[ 9164.127335][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9164.127335][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.127335][T12167]      netlink_rcv_skb+0x130/0x360
[ 9164.127335][T12167]      netlink_unicast+0x449/0x710
[ 9164.127335][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9164.127335][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.127335][T12167]      ___sys_sendmsg+0xee/0x170
[ 9164.127335][T12167]      __sys_sendmsg+0xcd/0x170
[ 9164.127335][T12167]      do_syscall_64+0xc6/0x1e0
[ 9164.127335][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.127335][T12167] 
[ 9164.129617][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9164.129617][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9164.129617][T12167]      ipv6_find_idev+0x102/0x170
[ 9164.129617][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9164.129617][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.129617][T12167]      netlink_rcv_skb+0x130/0x360
[ 9164.129617][T12167]      netlink_unicast+0x449/0x710
[ 9164.129617][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9164.129617][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.129617][T12167]      ___sys_sendmsg+0xee/0x170
[ 9164.129617][T12167]      __sys_sendmsg+0xcd/0x170
[ 9164.129617][T12167]      do_syscall_64+0xc6/0x1e0
[ 9164.129617][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.129617][T12167] 
[ 9164.131363][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9164.131363][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9164.131363][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9164.131363][T12167]      ipv6_find_idev+0x102/0x170
[ 9164.131363][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9164.131363][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.131363][T12167]      netlink_rcv_skb+0x130/0x360
[ 9164.131363][T12167]      netlink_unicast+0x449/0x710
[ 9164.131363][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9164.131363][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.131363][T12167]      ___sys_sendmsg+0xee/0x170
[ 9164.131363][T12167]      __sys_sendmsg+0xcd/0x170
[ 9164.131363][T12167]      do_syscall_64+0xc6/0x1e0
[ 9164.131363][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.131363][T12167] 
[ 9164.398807][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9164.399232][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9164.399232][   T10]      dst_init+0x84/0x4a0
[ 9164.399232][   T10]      dst_alloc+0x97/0x150
[ 9164.399232][   T10]      ip6_dst_alloc+0x23/0x90
[ 9164.399232][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9164.399232][   T10]      ip6_pol_route+0x56f/0x840
[ 9164.399232][   T10]      fib6_rule_lookup+0x334/0x630
[ 9164.399232][   T10]      ip6_route_output_flags+0x259/0x480
[ 9164.399232][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9164.399232][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9164.399232][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9164.399232][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9164.399232][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.399232][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.399232][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.399232][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.399232][   T10] 
[ 9164.401149][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.401149][   T10]      dst_init+0x84/0x4a0
[ 9164.401149][   T10]      dst_alloc+0x97/0x150
[ 9164.401149][   T10]      ip6_dst_alloc+0x23/0x90
[ 9164.401149][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9164.401149][   T10]      ip6_pol_route+0x56f/0x840
[ 9164.401149][   T10]      fib6_rule_lookup+0x334/0x630
[ 9164.401149][   T10]      ip6_route_output_flags+0x259/0x480
[ 9164.401149][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9164.401149][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9164.401149][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9164.401149][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9164.401149][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9164.401149][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.401149][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.401149][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.401149][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.401149][   T10] 
[ 9164.403192][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.403192][   T10]      dst_init+0x84/0x4a0
[ 9164.403192][   T10]      dst_alloc+0x97/0x150
[ 9164.403192][   T10]      ip6_dst_alloc+0x23/0x90
[ 9164.403192][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9164.403192][   T10]      ip6_pol_route+0x56f/0x840
[ 9164.403192][   T10]      fib6_rule_lookup+0x334/0x630
[ 9164.403192][   T10]      ip6_route_output_flags+0x259/0x480
[ 9164.403192][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9164.403192][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9164.403192][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9164.403192][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9164.403192][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9164.403192][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.403192][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.403192][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.403192][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.403192][   T10] 
[ 9164.405217][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.405217][   T10]      netdev_get_by_index+0x5e/0x80
[ 9164.405217][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9164.405217][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9164.405217][   T10]      ip6_route_add+0x1c/0x140
[ 9164.405217][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9164.405217][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9164.405217][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9164.405217][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.405217][   T10]      netlink_rcv_skb+0x130/0x360
[ 9164.405217][   T10]      netlink_unicast+0x449/0x710
[ 9164.405217][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9164.405217][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.405217][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.405217][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.405217][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.405217][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.405217][   T10] 
[ 9164.407277][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.407277][   T10]      netdev_get_by_index+0x5e/0x80
[ 9164.407277][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9164.407277][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9164.407277][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9164.407277][   T10]      ipv6_add_addr+0x411/0x2000
[ 9164.407277][   T10]      inet6_addr_add+0x30e/0xa40
[ 9164.407277][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9164.407277][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.407277][   T10]      netlink_rcv_skb+0x130/0x360
[ 9164.407277][   T10]      netlink_unicast+0x449/0x710
[ 9164.407277][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9164.407277][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.407277][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.407277][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.407277][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.407277][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.407277][   T10] 
[ 9164.409371][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.409371][   T10]      netdev_get_by_index+0x5e/0x80
[ 9164.409371][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9164.409371][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9164.409371][   T10]      ip6_route_add+0x1c/0x140
[ 9164.409371][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9164.409371][   T10]      addrconf_add_dev+0xe2/0x170
[ 9164.409371][   T10]      inet6_addr_add+0x12f/0xa40
[ 9164.409371][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9164.409371][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.409371][   T10]      netlink_rcv_skb+0x130/0x360
[ 9164.409371][   T10]      netlink_unicast+0x449/0x710
[ 9164.409371][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9164.409371][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.409371][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.409371][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.409371][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.409371][   T10] 
[ 9164.411370][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.411370][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9164.411370][   T10]      ipv6_find_idev+0x102/0x170
[ 9164.411370][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9164.411370][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.411370][   T10]      netlink_rcv_skb+0x130/0x360
[ 9164.411370][   T10]      netlink_unicast+0x449/0x710
[ 9164.411370][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9164.411370][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.411370][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.411370][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.411370][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.411370][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.411370][   T10] 
[ 9164.412939][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9164.412939][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9164.412939][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9164.412939][   T10]      ipv6_find_idev+0x102/0x170
[ 9164.412939][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9164.412939][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9164.412939][   T10]      netlink_rcv_skb+0x130/0x360
[ 9164.412939][   T10]      netlink_unicast+0x449/0x710
[ 9164.412939][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9164.412939][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9164.412939][   T10]      ___sys_sendmsg+0xee/0x170
[ 9164.412939][   T10]      __sys_sendmsg+0xcd/0x170
[ 9164.412939][   T10]      do_syscall_64+0xc6/0x1e0
[ 9164.412939][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9164.412939][   T10] 
[ 9174.374802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9174.375314][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9174.375314][T12167]      netdev_get_by_index+0x5e/0x80
[ 9174.375314][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9174.375314][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9174.375314][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9174.375314][T12167]      ipv6_add_addr+0x411/0x2000
[ 9174.375314][T12167]      inet6_addr_add+0x30e/0xa40
[ 9174.375314][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9174.375314][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.375314][T12167]      netlink_rcv_skb+0x130/0x360
[ 9174.375314][T12167]      netlink_unicast+0x449/0x710
[ 9174.375314][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9174.375314][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.375314][T12167]      ___sys_sendmsg+0xee/0x170
[ 9174.375314][T12167]      __sys_sendmsg+0xcd/0x170
[ 9174.375314][T12167]      do_syscall_64+0xc6/0x1e0
[ 9174.375314][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.375314][T12167] 
[ 9174.377591][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9174.377591][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9174.377591][T12167]      ipv6_find_idev+0x102/0x170
[ 9174.377591][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9174.377591][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.377591][T12167]      netlink_rcv_skb+0x130/0x360
[ 9174.377591][T12167]      netlink_unicast+0x449/0x710
[ 9174.377591][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9174.377591][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.377591][T12167]      ___sys_sendmsg+0xee/0x170
[ 9174.377591][T12167]      __sys_sendmsg+0xcd/0x170
[ 9174.377591][T12167]      do_syscall_64+0xc6/0x1e0
[ 9174.377591][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.377591][T12167] 
[ 9174.379336][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9174.379336][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9174.379336][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9174.379336][T12167]      ipv6_find_idev+0x102/0x170
[ 9174.379336][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9174.379336][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.379336][T12167]      netlink_rcv_skb+0x130/0x360
[ 9174.379336][T12167]      netlink_unicast+0x449/0x710
[ 9174.379336][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9174.379336][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.379336][T12167]      ___sys_sendmsg+0xee/0x170
[ 9174.379336][T12167]      __sys_sendmsg+0xcd/0x170
[ 9174.379336][T12167]      do_syscall_64+0xc6/0x1e0
[ 9174.379336][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.379336][T12167] 
[ 9174.654772][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9174.655199][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9174.655199][   T10]      dst_init+0x84/0x4a0
[ 9174.655199][   T10]      dst_alloc+0x97/0x150
[ 9174.655199][   T10]      ip6_dst_alloc+0x23/0x90
[ 9174.655199][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9174.655199][   T10]      ip6_pol_route+0x56f/0x840
[ 9174.655199][   T10]      fib6_rule_lookup+0x334/0x630
[ 9174.655199][   T10]      ip6_route_output_flags+0x259/0x480
[ 9174.655199][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9174.655199][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9174.655199][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9174.655199][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9174.655199][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.655199][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.655199][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.655199][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.655199][   T10] 
[ 9174.657125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.657125][   T10]      dst_init+0x84/0x4a0
[ 9174.657125][   T10]      dst_alloc+0x97/0x150
[ 9174.657125][   T10]      ip6_dst_alloc+0x23/0x90
[ 9174.657125][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9174.657125][   T10]      ip6_pol_route+0x56f/0x840
[ 9174.657125][   T10]      fib6_rule_lookup+0x334/0x630
[ 9174.657125][   T10]      ip6_route_output_flags+0x259/0x480
[ 9174.657125][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9174.657125][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9174.657125][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9174.657125][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9174.657125][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9174.657125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.657125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.657125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.657125][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.657125][   T10] 
[ 9174.659523][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.659523][   T10]      dst_init+0x84/0x4a0
[ 9174.659523][   T10]      dst_alloc+0x97/0x150
[ 9174.659523][   T10]      ip6_dst_alloc+0x23/0x90
[ 9174.659523][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9174.659523][   T10]      ip6_pol_route+0x56f/0x840
[ 9174.659523][   T10]      fib6_rule_lookup+0x334/0x630
[ 9174.659523][   T10]      ip6_route_output_flags+0x259/0x480
[ 9174.659523][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9174.659523][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9174.659523][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9174.659523][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9174.659523][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9174.659523][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.659523][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.659523][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.659523][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.659523][   T10] 
[ 9174.661546][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.661546][   T10]      netdev_get_by_index+0x5e/0x80
[ 9174.661546][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9174.661546][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9174.661546][   T10]      ip6_route_add+0x1c/0x140
[ 9174.661546][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9174.661546][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9174.661546][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9174.661546][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.661546][   T10]      netlink_rcv_skb+0x130/0x360
[ 9174.661546][   T10]      netlink_unicast+0x449/0x710
[ 9174.661546][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9174.661546][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.661546][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.661546][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.661546][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.661546][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.661546][   T10] 
[ 9174.663575][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.663575][   T10]      netdev_get_by_index+0x5e/0x80
[ 9174.663575][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9174.663575][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9174.663575][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9174.663575][   T10]      ipv6_add_addr+0x411/0x2000
[ 9174.663575][   T10]      inet6_addr_add+0x30e/0xa40
[ 9174.663575][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9174.663575][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.663575][   T10]      netlink_rcv_skb+0x130/0x360
[ 9174.663575][   T10]      netlink_unicast+0x449/0x710
[ 9174.663575][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9174.663575][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.663575][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.663575][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.663575][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.663575][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.663575][   T10] 
[ 9174.665588][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.665588][   T10]      netdev_get_by_index+0x5e/0x80
[ 9174.665588][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9174.665588][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9174.665588][   T10]      ip6_route_add+0x1c/0x140
[ 9174.665588][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9174.665588][   T10]      addrconf_add_dev+0xe2/0x170
[ 9174.665588][   T10]      inet6_addr_add+0x12f/0xa40
[ 9174.665588][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9174.665588][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.665588][   T10]      netlink_rcv_skb+0x130/0x360
[ 9174.665588][   T10]      netlink_unicast+0x449/0x710
[ 9174.665588][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9174.665588][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.665588][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.665588][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.665588][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.665588][   T10] 
[ 9174.667572][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.667572][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9174.667572][   T10]      ipv6_find_idev+0x102/0x170
[ 9174.667572][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9174.667572][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.667572][   T10]      netlink_rcv_skb+0x130/0x360
[ 9174.667572][   T10]      netlink_unicast+0x449/0x710
[ 9174.667572][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9174.667572][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.667572][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.667572][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.667572][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.667572][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.667572][   T10] 
[ 9174.669125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9174.669125][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9174.669125][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9174.669125][   T10]      ipv6_find_idev+0x102/0x170
[ 9174.669125][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9174.669125][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9174.669125][   T10]      netlink_rcv_skb+0x130/0x360
[ 9174.669125][   T10]      netlink_unicast+0x449/0x710
[ 9174.669125][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9174.669125][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9174.669125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9174.669125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9174.669125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9174.669125][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9174.669125][   T10] 
[ 9184.622809][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9184.623347][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9184.623347][T12167]      netdev_get_by_index+0x5e/0x80
[ 9184.623347][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9184.623347][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9184.623347][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9184.623347][T12167]      ipv6_add_addr+0x411/0x2000
[ 9184.623347][T12167]      inet6_addr_add+0x30e/0xa40
[ 9184.623347][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9184.623347][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.623347][T12167]      netlink_rcv_skb+0x130/0x360
[ 9184.623347][T12167]      netlink_unicast+0x449/0x710
[ 9184.623347][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9184.623347][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.623347][T12167]      ___sys_sendmsg+0xee/0x170
[ 9184.623347][T12167]      __sys_sendmsg+0xcd/0x170
[ 9184.623347][T12167]      do_syscall_64+0xc6/0x1e0
[ 9184.623347][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.623347][T12167] 
[ 9184.625618][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9184.625618][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9184.625618][T12167]      ipv6_find_idev+0x102/0x170
[ 9184.625618][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9184.625618][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.625618][T12167]      netlink_rcv_skb+0x130/0x360
[ 9184.625618][T12167]      netlink_unicast+0x449/0x710
[ 9184.625618][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9184.625618][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.625618][T12167]      ___sys_sendmsg+0xee/0x170
[ 9184.625618][T12167]      __sys_sendmsg+0xcd/0x170
[ 9184.625618][T12167]      do_syscall_64+0xc6/0x1e0
[ 9184.625618][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.625618][T12167] 
[ 9184.627367][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9184.627367][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9184.627367][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9184.627367][T12167]      ipv6_find_idev+0x102/0x170
[ 9184.627367][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9184.627367][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.627367][T12167]      netlink_rcv_skb+0x130/0x360
[ 9184.627367][T12167]      netlink_unicast+0x449/0x710
[ 9184.627367][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9184.627367][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.627367][T12167]      ___sys_sendmsg+0xee/0x170
[ 9184.627367][T12167]      __sys_sendmsg+0xcd/0x170
[ 9184.627367][T12167]      do_syscall_64+0xc6/0x1e0
[ 9184.627367][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.627367][T12167] 
[ 9184.878835][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9184.879246][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9184.879246][   T10]      dst_init+0x84/0x4a0
[ 9184.879246][   T10]      dst_alloc+0x97/0x150
[ 9184.879246][   T10]      ip6_dst_alloc+0x23/0x90
[ 9184.879246][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9184.879246][   T10]      ip6_pol_route+0x56f/0x840
[ 9184.879246][   T10]      fib6_rule_lookup+0x334/0x630
[ 9184.879246][   T10]      ip6_route_output_flags+0x259/0x480
[ 9184.879246][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9184.879246][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9184.879246][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9184.879246][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9184.879246][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.879246][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.879246][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.879246][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.879246][   T10] 
[ 9184.881162][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.881162][   T10]      dst_init+0x84/0x4a0
[ 9184.881162][   T10]      dst_alloc+0x97/0x150
[ 9184.881162][   T10]      ip6_dst_alloc+0x23/0x90
[ 9184.881162][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9184.881162][   T10]      ip6_pol_route+0x56f/0x840
[ 9184.881162][   T10]      fib6_rule_lookup+0x334/0x630
[ 9184.881162][   T10]      ip6_route_output_flags+0x259/0x480
[ 9184.881162][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9184.881162][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9184.881162][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9184.881162][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9184.881162][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9184.881162][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.881162][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.881162][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.881162][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.881162][   T10] 
[ 9184.883190][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.883190][   T10]      dst_init+0x84/0x4a0
[ 9184.883190][   T10]      dst_alloc+0x97/0x150
[ 9184.883190][   T10]      ip6_dst_alloc+0x23/0x90
[ 9184.883190][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9184.883190][   T10]      ip6_pol_route+0x56f/0x840
[ 9184.883190][   T10]      fib6_rule_lookup+0x334/0x630
[ 9184.883190][   T10]      ip6_route_output_flags+0x259/0x480
[ 9184.883190][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9184.883190][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9184.883190][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9184.883190][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9184.883190][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9184.883190][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.883190][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.883190][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.883190][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.883190][   T10] 
[ 9184.885212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.885212][   T10]      netdev_get_by_index+0x5e/0x80
[ 9184.885212][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9184.885212][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9184.885212][   T10]      ip6_route_add+0x1c/0x140
[ 9184.885212][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9184.885212][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9184.885212][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9184.885212][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.885212][   T10]      netlink_rcv_skb+0x130/0x360
[ 9184.885212][   T10]      netlink_unicast+0x449/0x710
[ 9184.885212][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9184.885212][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.885212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.885212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.885212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.885212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.885212][   T10] 
[ 9184.887238][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.887238][   T10]      netdev_get_by_index+0x5e/0x80
[ 9184.887238][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9184.887238][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9184.887238][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9184.887238][   T10]      ipv6_add_addr+0x411/0x2000
[ 9184.887238][   T10]      inet6_addr_add+0x30e/0xa40
[ 9184.887238][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9184.887238][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.887238][   T10]      netlink_rcv_skb+0x130/0x360
[ 9184.887238][   T10]      netlink_unicast+0x449/0x710
[ 9184.887238][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9184.887238][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.887238][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.887238][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.887238][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.887238][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.887238][   T10] 
[ 9184.889273][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.889273][   T10]      netdev_get_by_index+0x5e/0x80
[ 9184.889273][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9184.889273][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9184.889273][   T10]      ip6_route_add+0x1c/0x140
[ 9184.889273][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9184.889273][   T10]      addrconf_add_dev+0xe2/0x170
[ 9184.889273][   T10]      inet6_addr_add+0x12f/0xa40
[ 9184.889273][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9184.889273][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.889273][   T10]      netlink_rcv_skb+0x130/0x360
[ 9184.889273][   T10]      netlink_unicast+0x449/0x710
[ 9184.889273][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9184.889273][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.889273][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.889273][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.889273][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.889273][   T10] 
[ 9184.891283][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.891283][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9184.891283][   T10]      ipv6_find_idev+0x102/0x170
[ 9184.891283][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9184.891283][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.891283][   T10]      netlink_rcv_skb+0x130/0x360
[ 9184.891283][   T10]      netlink_unicast+0x449/0x710
[ 9184.891283][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9184.891283][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.891283][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.891283][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.891283][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.891283][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.891283][   T10] 
[ 9184.892853][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9184.892853][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9184.892853][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9184.892853][   T10]      ipv6_find_idev+0x102/0x170
[ 9184.892853][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9184.892853][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9184.892853][   T10]      netlink_rcv_skb+0x130/0x360
[ 9184.892853][   T10]      netlink_unicast+0x449/0x710
[ 9184.892853][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9184.892853][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9184.892853][   T10]      ___sys_sendmsg+0xee/0x170
[ 9184.892853][   T10]      __sys_sendmsg+0xcd/0x170
[ 9184.892853][   T10]      do_syscall_64+0xc6/0x1e0
[ 9184.892853][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9184.892853][   T10] 
[ 9194.870832][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9194.871340][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9194.871340][T12167]      netdev_get_by_index+0x5e/0x80
[ 9194.871340][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9194.871340][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9194.871340][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9194.871340][T12167]      ipv6_add_addr+0x411/0x2000
[ 9194.871340][T12167]      inet6_addr_add+0x30e/0xa40
[ 9194.871340][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9194.871340][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9194.871340][T12167]      netlink_rcv_skb+0x130/0x360
[ 9194.871340][T12167]      netlink_unicast+0x449/0x710
[ 9194.871340][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9194.871340][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9194.871340][T12167]      ___sys_sendmsg+0xee/0x170
[ 9194.871340][T12167]      __sys_sendmsg+0xcd/0x170
[ 9194.871340][T12167]      do_syscall_64+0xc6/0x1e0
[ 9194.871340][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9194.871340][T12167] 
[ 9194.873627][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9194.873627][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9194.873627][T12167]      ipv6_find_idev+0x102/0x170
[ 9194.873627][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9194.873627][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9194.873627][T12167]      netlink_rcv_skb+0x130/0x360
[ 9194.873627][T12167]      netlink_unicast+0x449/0x710
[ 9194.873627][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9194.873627][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9194.873627][T12167]      ___sys_sendmsg+0xee/0x170
[ 9194.873627][T12167]      __sys_sendmsg+0xcd/0x170
[ 9194.873627][T12167]      do_syscall_64+0xc6/0x1e0
[ 9194.873627][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9194.873627][T12167] 
[ 9194.875504][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9194.875504][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9194.875504][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9194.875504][T12167]      ipv6_find_idev+0x102/0x170
[ 9194.875504][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9194.875504][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9194.875504][T12167]      netlink_rcv_skb+0x130/0x360
[ 9194.875504][T12167]      netlink_unicast+0x449/0x710
[ 9194.875504][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9194.875504][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9194.875504][T12167]      ___sys_sendmsg+0xee/0x170
[ 9194.875504][T12167]      __sys_sendmsg+0xcd/0x170
[ 9194.875504][T12167]      do_syscall_64+0xc6/0x1e0
[ 9194.875504][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9194.875504][T12167] 
[ 9195.134886][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9195.135300][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9195.135300][   T10]      dst_init+0x84/0x4a0
[ 9195.135300][   T10]      dst_alloc+0x97/0x150
[ 9195.135300][   T10]      ip6_dst_alloc+0x23/0x90
[ 9195.135300][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9195.135300][   T10]      ip6_pol_route+0x56f/0x840
[ 9195.135300][   T10]      fib6_rule_lookup+0x334/0x630
[ 9195.135300][   T10]      ip6_route_output_flags+0x259/0x480
[ 9195.135300][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9195.135300][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9195.135300][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9195.135300][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9195.135300][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.135300][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.135300][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.135300][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.135300][   T10] 
[ 9195.137219][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.137219][   T10]      dst_init+0x84/0x4a0
[ 9195.137219][   T10]      dst_alloc+0x97/0x150
[ 9195.137219][   T10]      ip6_dst_alloc+0x23/0x90
[ 9195.137219][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9195.137219][   T10]      ip6_pol_route+0x56f/0x840
[ 9195.137219][   T10]      fib6_rule_lookup+0x334/0x630
[ 9195.137219][   T10]      ip6_route_output_flags+0x259/0x480
[ 9195.137219][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9195.137219][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9195.137219][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9195.137219][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9195.137219][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9195.137219][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.137219][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.137219][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.137219][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.137219][   T10] 
[ 9195.139220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.139220][   T10]      dst_init+0x84/0x4a0
[ 9195.139220][   T10]      dst_alloc+0x97/0x150
[ 9195.139220][   T10]      ip6_dst_alloc+0x23/0x90
[ 9195.139220][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9195.139220][   T10]      ip6_pol_route+0x56f/0x840
[ 9195.139220][   T10]      fib6_rule_lookup+0x334/0x630
[ 9195.139220][   T10]      ip6_route_output_flags+0x259/0x480
[ 9195.139220][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9195.139220][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9195.139220][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9195.139220][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9195.139220][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9195.139220][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.139220][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.139220][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.139220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.139220][   T10] 
[ 9195.141228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.141228][   T10]      netdev_get_by_index+0x5e/0x80
[ 9195.141228][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9195.141228][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9195.141228][   T10]      ip6_route_add+0x1c/0x140
[ 9195.141228][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9195.141228][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9195.141228][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9195.141228][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9195.141228][   T10]      netlink_rcv_skb+0x130/0x360
[ 9195.141228][   T10]      netlink_unicast+0x449/0x710
[ 9195.141228][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9195.141228][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9195.141228][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.141228][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.141228][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.141228][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.141228][   T10] 
[ 9195.143246][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.143246][   T10]      netdev_get_by_index+0x5e/0x80
[ 9195.143246][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9195.143246][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9195.143246][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9195.143246][   T10]      ipv6_add_addr+0x411/0x2000
[ 9195.143246][   T10]      inet6_addr_add+0x30e/0xa40
[ 9195.143246][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9195.143246][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9195.143246][   T10]      netlink_rcv_skb+0x130/0x360
[ 9195.143246][   T10]      netlink_unicast+0x449/0x710
[ 9195.143246][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9195.143246][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9195.143246][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.143246][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.143246][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.143246][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.143246][   T10] 
[ 9195.145245][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.145245][   T10]      netdev_get_by_index+0x5e/0x80
[ 9195.145245][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9195.145245][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9195.145245][   T10]      ip6_route_add+0x1c/0x140
[ 9195.145245][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9195.145245][   T10]      addrconf_add_dev+0xe2/0x170
[ 9195.145245][   T10]      inet6_addr_add+0x12f/0xa40
[ 9195.145245][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9195.145245][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9195.145245][   T10]      netlink_rcv_skb+0x130/0x360
[ 9195.145245][   T10]      netlink_unicast+0x449/0x710
[ 9195.145245][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9195.145245][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9195.145245][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.145245][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.145245][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.145245][   T10] 
[ 9195.147209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.147209][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9195.147209][   T10]      ipv6_find_idev+0x102/0x170
[ 9195.147209][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9195.147209][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9195.147209][   T10]      netlink_rcv_skb+0x130/0x360
[ 9195.147209][   T10]      netlink_unicast+0x449/0x710
[ 9195.147209][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9195.147209][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9195.147209][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.147209][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.147209][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.147209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.147209][   T10] 
[ 9195.148751][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9195.148751][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9195.148751][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9195.148751][   T10]      ipv6_find_idev+0x102/0x170
[ 9195.148751][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9195.148751][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9195.148751][   T10]      netlink_rcv_skb+0x130/0x360
[ 9195.148751][   T10]      netlink_unicast+0x449/0x710
[ 9195.148751][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9195.148751][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9195.148751][   T10]      ___sys_sendmsg+0xee/0x170
[ 9195.148751][   T10]      __sys_sendmsg+0xcd/0x170
[ 9195.148751][   T10]      do_syscall_64+0xc6/0x1e0
[ 9195.148751][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9195.148751][   T10] 
[ 9204.902796][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9204.903298][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9204.903298][T12167]      netdev_get_by_index+0x5e/0x80
[ 9204.903298][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9204.903298][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9204.903298][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9204.903298][T12167]      ipv6_add_addr+0x411/0x2000
[ 9204.903298][T12167]      inet6_addr_add+0x30e/0xa40
[ 9204.903298][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9204.903298][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9204.903298][T12167]      netlink_rcv_skb+0x130/0x360
[ 9204.903298][T12167]      netlink_unicast+0x449/0x710
[ 9204.903298][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9204.903298][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9204.903298][T12167]      ___sys_sendmsg+0xee/0x170
[ 9204.903298][T12167]      __sys_sendmsg+0xcd/0x170
[ 9204.903298][T12167]      do_syscall_64+0xc6/0x1e0
[ 9204.903298][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9204.903298][T12167] 
[ 9204.905569][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9204.905569][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9204.905569][T12167]      ipv6_find_idev+0x102/0x170
[ 9204.905569][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9204.905569][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9204.905569][T12167]      netlink_rcv_skb+0x130/0x360
[ 9204.905569][T12167]      netlink_unicast+0x449/0x710
[ 9204.905569][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9204.905569][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9204.905569][T12167]      ___sys_sendmsg+0xee/0x170
[ 9204.905569][T12167]      __sys_sendmsg+0xcd/0x170
[ 9204.905569][T12167]      do_syscall_64+0xc6/0x1e0
[ 9204.905569][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9204.905569][T12167] 
[ 9204.907311][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9204.907311][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9204.907311][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9204.907311][T12167]      ipv6_find_idev+0x102/0x170
[ 9204.907311][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9204.907311][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9204.907311][T12167]      netlink_rcv_skb+0x130/0x360
[ 9204.907311][T12167]      netlink_unicast+0x449/0x710
[ 9204.907311][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9204.907311][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9204.907311][T12167]      ___sys_sendmsg+0xee/0x170
[ 9204.907311][T12167]      __sys_sendmsg+0xcd/0x170
[ 9204.907311][T12167]      do_syscall_64+0xc6/0x1e0
[ 9204.907311][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9204.907311][T12167] 
[ 9205.150821][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9205.151220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9205.151220][   T10]      dst_init+0x84/0x4a0
[ 9205.151220][   T10]      dst_alloc+0x97/0x150
[ 9205.151220][   T10]      ip6_dst_alloc+0x23/0x90
[ 9205.151220][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9205.151220][   T10]      ip6_pol_route+0x56f/0x840
[ 9205.151220][   T10]      fib6_rule_lookup+0x334/0x630
[ 9205.151220][   T10]      ip6_route_output_flags+0x259/0x480
[ 9205.151220][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9205.151220][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9205.151220][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9205.151220][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9205.151220][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.151220][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.151220][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.151220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.151220][   T10] 
[ 9205.153122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.153122][   T10]      dst_init+0x84/0x4a0
[ 9205.153122][   T10]      dst_alloc+0x97/0x150
[ 9205.153122][   T10]      ip6_dst_alloc+0x23/0x90
[ 9205.153122][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9205.153122][   T10]      ip6_pol_route+0x56f/0x840
[ 9205.153122][   T10]      fib6_rule_lookup+0x334/0x630
[ 9205.153122][   T10]      ip6_route_output_flags+0x259/0x480
[ 9205.153122][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9205.153122][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9205.153122][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9205.153122][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9205.153122][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9205.153122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.153122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.153122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.153122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.153122][   T10] 
[ 9205.155132][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.155132][   T10]      dst_init+0x84/0x4a0
[ 9205.155132][   T10]      dst_alloc+0x97/0x150
[ 9205.155132][   T10]      ip6_dst_alloc+0x23/0x90
[ 9205.155132][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9205.155132][   T10]      ip6_pol_route+0x56f/0x840
[ 9205.155132][   T10]      fib6_rule_lookup+0x334/0x630
[ 9205.155132][   T10]      ip6_route_output_flags+0x259/0x480
[ 9205.155132][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9205.155132][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9205.155132][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9205.155132][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9205.155132][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9205.155132][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.155132][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.155132][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.155132][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.155132][   T10] 
[ 9205.157133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.157133][   T10]      netdev_get_by_index+0x5e/0x80
[ 9205.157133][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9205.157133][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9205.157133][   T10]      ip6_route_add+0x1c/0x140
[ 9205.157133][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9205.157133][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9205.157133][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9205.157133][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9205.157133][   T10]      netlink_rcv_skb+0x130/0x360
[ 9205.157133][   T10]      netlink_unicast+0x449/0x710
[ 9205.157133][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9205.157133][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9205.157133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.157133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.157133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.157133][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.157133][   T10] 
[ 9205.159137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.159137][   T10]      netdev_get_by_index+0x5e/0x80
[ 9205.159137][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9205.159137][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9205.159137][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9205.159137][   T10]      ipv6_add_addr+0x411/0x2000
[ 9205.159137][   T10]      inet6_addr_add+0x30e/0xa40
[ 9205.159137][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9205.159137][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9205.159137][   T10]      netlink_rcv_skb+0x130/0x360
[ 9205.159137][   T10]      netlink_unicast+0x449/0x710
[ 9205.159137][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9205.159137][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9205.159137][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.159137][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.159137][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.159137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.159137][   T10] 
[ 9205.161143][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.161143][   T10]      netdev_get_by_index+0x5e/0x80
[ 9205.161143][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9205.161143][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9205.161143][   T10]      ip6_route_add+0x1c/0x140
[ 9205.161143][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9205.161143][   T10]      addrconf_add_dev+0xe2/0x170
[ 9205.161143][   T10]      inet6_addr_add+0x12f/0xa40
[ 9205.161143][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9205.161143][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9205.161143][   T10]      netlink_rcv_skb+0x130/0x360
[ 9205.161143][   T10]      netlink_unicast+0x449/0x710
[ 9205.161143][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9205.161143][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9205.161143][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.161143][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.161143][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.161143][   T10] 
[ 9205.163124][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.163124][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9205.163124][   T10]      ipv6_find_idev+0x102/0x170
[ 9205.163124][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9205.163124][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9205.163124][   T10]      netlink_rcv_skb+0x130/0x360
[ 9205.163124][   T10]      netlink_unicast+0x449/0x710
[ 9205.163124][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9205.163124][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9205.163124][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.163124][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.163124][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.163124][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.163124][   T10] 
[ 9205.164673][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9205.164673][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9205.164673][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9205.164673][   T10]      ipv6_find_idev+0x102/0x170
[ 9205.164673][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9205.164673][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9205.164673][   T10]      netlink_rcv_skb+0x130/0x360
[ 9205.164673][   T10]      netlink_unicast+0x449/0x710
[ 9205.164673][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9205.164673][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9205.164673][   T10]      ___sys_sendmsg+0xee/0x170
[ 9205.164673][   T10]      __sys_sendmsg+0xcd/0x170
[ 9205.164673][   T10]      do_syscall_64+0xc6/0x1e0
[ 9205.164673][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9205.164673][   T10] 
[ 9215.150904][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9215.151420][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9215.151420][T12167]      netdev_get_by_index+0x5e/0x80
[ 9215.151420][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9215.151420][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9215.151420][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9215.151420][T12167]      ipv6_add_addr+0x411/0x2000
[ 9215.151420][T12167]      inet6_addr_add+0x30e/0xa40
[ 9215.151420][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9215.151420][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.151420][T12167]      netlink_rcv_skb+0x130/0x360
[ 9215.151420][T12167]      netlink_unicast+0x449/0x710
[ 9215.151420][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9215.151420][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.151420][T12167]      ___sys_sendmsg+0xee/0x170
[ 9215.151420][T12167]      __sys_sendmsg+0xcd/0x170
[ 9215.151420][T12167]      do_syscall_64+0xc6/0x1e0
[ 9215.151420][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.151420][T12167] 
[ 9215.153729][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9215.153729][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9215.153729][T12167]      ipv6_find_idev+0x102/0x170
[ 9215.153729][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9215.153729][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.153729][T12167]      netlink_rcv_skb+0x130/0x360
[ 9215.153729][T12167]      netlink_unicast+0x449/0x710
[ 9215.153729][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9215.153729][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.153729][T12167]      ___sys_sendmsg+0xee/0x170
[ 9215.153729][T12167]      __sys_sendmsg+0xcd/0x170
[ 9215.153729][T12167]      do_syscall_64+0xc6/0x1e0
[ 9215.153729][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.153729][T12167] 
[ 9215.155479][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9215.155479][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9215.155479][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9215.155479][T12167]      ipv6_find_idev+0x102/0x170
[ 9215.155479][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9215.155479][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.155479][T12167]      netlink_rcv_skb+0x130/0x360
[ 9215.155479][T12167]      netlink_unicast+0x449/0x710
[ 9215.155479][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9215.155479][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.155479][T12167]      ___sys_sendmsg+0xee/0x170
[ 9215.155479][T12167]      __sys_sendmsg+0xcd/0x170
[ 9215.155479][T12167]      do_syscall_64+0xc6/0x1e0
[ 9215.155479][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.155479][T12167] 
[ 9215.406896][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9215.407307][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9215.407307][   T10]      dst_init+0x84/0x4a0
[ 9215.407307][   T10]      dst_alloc+0x97/0x150
[ 9215.407307][   T10]      ip6_dst_alloc+0x23/0x90
[ 9215.407307][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9215.407307][   T10]      ip6_pol_route+0x56f/0x840
[ 9215.407307][   T10]      fib6_rule_lookup+0x334/0x630
[ 9215.407307][   T10]      ip6_route_output_flags+0x259/0x480
[ 9215.407307][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9215.407307][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9215.407307][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9215.407307][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9215.407307][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.407307][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.407307][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.407307][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.407307][   T10] 
[ 9215.409236][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.409236][   T10]      dst_init+0x84/0x4a0
[ 9215.409236][   T10]      dst_alloc+0x97/0x150
[ 9215.409236][   T10]      ip6_dst_alloc+0x23/0x90
[ 9215.409236][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9215.409236][   T10]      ip6_pol_route+0x56f/0x840
[ 9215.409236][   T10]      fib6_rule_lookup+0x334/0x630
[ 9215.409236][   T10]      ip6_route_output_flags+0x259/0x480
[ 9215.409236][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9215.409236][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9215.409236][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9215.409236][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9215.409236][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9215.409236][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.409236][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.409236][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.409236][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.409236][   T10] 
[ 9215.411226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.411226][   T10]      dst_init+0x84/0x4a0
[ 9215.411226][   T10]      dst_alloc+0x97/0x150
[ 9215.411226][   T10]      ip6_dst_alloc+0x23/0x90
[ 9215.411226][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9215.411226][   T10]      ip6_pol_route+0x56f/0x840
[ 9215.411226][   T10]      fib6_rule_lookup+0x334/0x630
[ 9215.411226][   T10]      ip6_route_output_flags+0x259/0x480
[ 9215.411226][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9215.411226][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9215.411226][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9215.411226][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9215.411226][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9215.411226][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.411226][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.411226][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.411226][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.411226][   T10] 
[ 9215.413235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.413235][   T10]      netdev_get_by_index+0x5e/0x80
[ 9215.413235][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9215.413235][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9215.413235][   T10]      ip6_route_add+0x1c/0x140
[ 9215.413235][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9215.413235][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9215.413235][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9215.413235][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.413235][   T10]      netlink_rcv_skb+0x130/0x360
[ 9215.413235][   T10]      netlink_unicast+0x449/0x710
[ 9215.413235][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9215.413235][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.413235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.413235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.413235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.413235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.413235][   T10] 
[ 9215.415229][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.415229][   T10]      netdev_get_by_index+0x5e/0x80
[ 9215.415229][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9215.415229][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9215.415229][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9215.415229][   T10]      ipv6_add_addr+0x411/0x2000
[ 9215.415229][   T10]      inet6_addr_add+0x30e/0xa40
[ 9215.415229][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9215.415229][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.415229][   T10]      netlink_rcv_skb+0x130/0x360
[ 9215.415229][   T10]      netlink_unicast+0x449/0x710
[ 9215.415229][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9215.415229][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.415229][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.415229][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.415229][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.415229][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.415229][   T10] 
[ 9215.417220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.417220][   T10]      netdev_get_by_index+0x5e/0x80
[ 9215.417220][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9215.417220][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9215.417220][   T10]      ip6_route_add+0x1c/0x140
[ 9215.417220][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9215.417220][   T10]      addrconf_add_dev+0xe2/0x170
[ 9215.417220][   T10]      inet6_addr_add+0x12f/0xa40
[ 9215.417220][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9215.417220][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.417220][   T10]      netlink_rcv_skb+0x130/0x360
[ 9215.417220][   T10]      netlink_unicast+0x449/0x710
[ 9215.417220][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9215.417220][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.417220][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.417220][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.417220][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.417220][   T10] 
[ 9215.419179][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.419179][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9215.419179][   T10]      ipv6_find_idev+0x102/0x170
[ 9215.419179][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9215.419179][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.419179][   T10]      netlink_rcv_skb+0x130/0x360
[ 9215.419179][   T10]      netlink_unicast+0x449/0x710
[ 9215.419179][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9215.419179][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.419179][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.419179][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.419179][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.419179][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.419179][   T10] 
[ 9215.420722][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9215.420722][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9215.420722][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9215.420722][   T10]      ipv6_find_idev+0x102/0x170
[ 9215.420722][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9215.420722][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9215.420722][   T10]      netlink_rcv_skb+0x130/0x360
[ 9215.420722][   T10]      netlink_unicast+0x449/0x710
[ 9215.420722][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9215.420722][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9215.420722][   T10]      ___sys_sendmsg+0xee/0x170
[ 9215.420722][   T10]      __sys_sendmsg+0xcd/0x170
[ 9215.420722][   T10]      do_syscall_64+0xc6/0x1e0
[ 9215.420722][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9215.420722][   T10] 
[ 9217.318856][   T42] INFO: task modprobe:12646 blocked for more than 491 seconds.
[ 9217.319146][   T42]       Not tainted 6.8.0-virtme #1
[ 9217.319269][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9217.319467][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9217.319744][   T42] Call Trace:
[ 9217.319843][   T42]  <TASK>
[ 9217.319913][   T42]  __schedule+0x705/0x1ac0
[ 9217.320051][   T42]  ? __pfx___schedule+0x10/0x10
[ 9217.320174][   T42]  ? schedule+0x1a5/0x210
[ 9217.320271][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9217.320402][   T42]  ? mark_lock+0x38/0x3e0
[ 9217.320497][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9217.320628][   T42]  ? schedule+0x1a5/0x210
[ 9217.320737][   T42]  schedule+0xdf/0x210
[ 9217.320837][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9217.320958][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9217.321087][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9217.321242][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9217.321365][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9217.321494][   T42]  ? lock_acquire+0x1c1/0x220
[ 9217.321622][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9217.321763][   T42]  down_write+0x1c9/0x200
[ 9217.321859][   T42]  ? __pfx_down_write+0x10/0x10
[ 9217.321981][   T42]  ? __pfx__printk+0x10/0x10
[ 9217.322109][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9217.322237][   T42]  register_pernet_subsys+0x1a/0x50
[ 9217.322367][   T42]  tcf_register_action+0xa3/0x600
[ 9217.322502][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9217.322664][   T42]  do_one_initcall+0xc8/0x3f0
[ 9217.322800][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9217.322927][   T42]  ? __create_object+0x5e/0xb0
[ 9217.323055][   T42]  ? kasan_unpoison+0x27/0x60
[ 9217.323185][   T42]  do_init_module+0x233/0x740
[ 9217.323321][   T42]  load_module+0x16b5/0x2350
[ 9217.323458][   T42]  ? __pfx_load_module+0x10/0x10
[ 9217.323580][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9217.323721][   T42]  ? kernel_read_file+0x300/0x520
[ 9217.323855][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9217.323987][   T42]  ? init_module_from_file+0xd2/0x130
[ 9217.324114][   T42]  init_module_from_file+0xd2/0x130
[ 9217.324237][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9217.324390][   T42]  ? __lock_release+0x103/0x460
[ 9217.324513][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9217.324647][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9217.324782][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9217.324912][   T42]  idempotent_init_module+0x342/0x620
[ 9217.325040][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9217.325211][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9217.325337][   T42]  do_syscall_64+0xc6/0x1e0
[ 9217.325463][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9217.325619][   T42] RIP: 0033:0x7fac120f1e5d
[ 9217.325758][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9217.325947][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9217.326131][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9217.326312][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9217.326497][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9217.326682][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9217.326886][   T42]  </TASK>
[ 9217.326983][   T42] 
[ 9217.326983][   T42] Showing all locks held in the system:
[ 9217.327158][   T42] 3 locks held by kworker/u16:0/10:
[ 9217.327282][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9217.327532][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9217.327795][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9217.328015][   T42] 1 lock held by khungtaskd/42:
[ 9217.328135][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9217.328352][   T42] 2 locks held by kworker/u17:1/44:
[ 9217.328469][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9217.328723][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9217.329008][   T42] 1 lock held by modprobe/12646:
[ 9217.329125][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9217.329372][   T42] 
[ 9217.329432][   T42] =============================================
[ 9217.329432][   T42] 
[ 9225.398819][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9225.399354][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9225.399354][T12167]      netdev_get_by_index+0x5e/0x80
[ 9225.399354][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9225.399354][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9225.399354][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9225.399354][T12167]      ipv6_add_addr+0x411/0x2000
[ 9225.399354][T12167]      inet6_addr_add+0x30e/0xa40
[ 9225.399354][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9225.399354][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.399354][T12167]      netlink_rcv_skb+0x130/0x360
[ 9225.399354][T12167]      netlink_unicast+0x449/0x710
[ 9225.399354][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9225.399354][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.399354][T12167]      ___sys_sendmsg+0xee/0x170
[ 9225.399354][T12167]      __sys_sendmsg+0xcd/0x170
[ 9225.399354][T12167]      do_syscall_64+0xc6/0x1e0
[ 9225.399354][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.399354][T12167] 
[ 9225.401659][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9225.401659][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9225.401659][T12167]      ipv6_find_idev+0x102/0x170
[ 9225.401659][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9225.401659][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.401659][T12167]      netlink_rcv_skb+0x130/0x360
[ 9225.401659][T12167]      netlink_unicast+0x449/0x710
[ 9225.401659][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9225.401659][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.401659][T12167]      ___sys_sendmsg+0xee/0x170
[ 9225.401659][T12167]      __sys_sendmsg+0xcd/0x170
[ 9225.401659][T12167]      do_syscall_64+0xc6/0x1e0
[ 9225.401659][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.401659][T12167] 
[ 9225.403426][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9225.403426][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9225.403426][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9225.403426][T12167]      ipv6_find_idev+0x102/0x170
[ 9225.403426][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9225.403426][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.403426][T12167]      netlink_rcv_skb+0x130/0x360
[ 9225.403426][T12167]      netlink_unicast+0x449/0x710
[ 9225.403426][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9225.403426][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.403426][T12167]      ___sys_sendmsg+0xee/0x170
[ 9225.403426][T12167]      __sys_sendmsg+0xcd/0x170
[ 9225.403426][T12167]      do_syscall_64+0xc6/0x1e0
[ 9225.403426][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.403426][T12167] 
[ 9225.670737][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9225.671137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9225.671137][   T10]      dst_init+0x84/0x4a0
[ 9225.671137][   T10]      dst_alloc+0x97/0x150
[ 9225.671137][   T10]      ip6_dst_alloc+0x23/0x90
[ 9225.671137][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9225.671137][   T10]      ip6_pol_route+0x56f/0x840
[ 9225.671137][   T10]      fib6_rule_lookup+0x334/0x630
[ 9225.671137][   T10]      ip6_route_output_flags+0x259/0x480
[ 9225.671137][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9225.671137][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9225.671137][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9225.671137][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9225.671137][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.671137][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.671137][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.671137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.671137][   T10] 
[ 9225.673034][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.673034][   T10]      dst_init+0x84/0x4a0
[ 9225.673034][   T10]      dst_alloc+0x97/0x150
[ 9225.673034][   T10]      ip6_dst_alloc+0x23/0x90
[ 9225.673034][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9225.673034][   T10]      ip6_pol_route+0x56f/0x840
[ 9225.673034][   T10]      fib6_rule_lookup+0x334/0x630
[ 9225.673034][   T10]      ip6_route_output_flags+0x259/0x480
[ 9225.673034][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9225.673034][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9225.673034][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9225.673034][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9225.673034][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9225.673034][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.673034][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.673034][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.673034][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.673034][   T10] 
[ 9225.675029][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.675029][   T10]      dst_init+0x84/0x4a0
[ 9225.675029][   T10]      dst_alloc+0x97/0x150
[ 9225.675029][   T10]      ip6_dst_alloc+0x23/0x90
[ 9225.675029][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9225.675029][   T10]      ip6_pol_route+0x56f/0x840
[ 9225.675029][   T10]      fib6_rule_lookup+0x334/0x630
[ 9225.675029][   T10]      ip6_route_output_flags+0x259/0x480
[ 9225.675029][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9225.675029][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9225.675029][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9225.675029][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9225.675029][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9225.675029][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.675029][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.675029][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.675029][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.675029][   T10] 
[ 9225.677021][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.677021][   T10]      netdev_get_by_index+0x5e/0x80
[ 9225.677021][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9225.677021][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9225.677021][   T10]      ip6_route_add+0x1c/0x140
[ 9225.677021][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9225.677021][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9225.677021][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9225.677021][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.677021][   T10]      netlink_rcv_skb+0x130/0x360
[ 9225.677021][   T10]      netlink_unicast+0x449/0x710
[ 9225.677021][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9225.677021][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.677021][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.677021][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.677021][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.677021][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.677021][   T10] 
[ 9225.679133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.679133][   T10]      netdev_get_by_index+0x5e/0x80
[ 9225.679133][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9225.679133][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9225.679133][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9225.679133][   T10]      ipv6_add_addr+0x411/0x2000
[ 9225.679133][   T10]      inet6_addr_add+0x30e/0xa40
[ 9225.679133][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9225.679133][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.679133][   T10]      netlink_rcv_skb+0x130/0x360
[ 9225.679133][   T10]      netlink_unicast+0x449/0x710
[ 9225.679133][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9225.679133][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.679133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.679133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.679133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.679133][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.679133][   T10] 
[ 9225.681130][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.681130][   T10]      netdev_get_by_index+0x5e/0x80
[ 9225.681130][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9225.681130][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9225.681130][   T10]      ip6_route_add+0x1c/0x140
[ 9225.681130][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9225.681130][   T10]      addrconf_add_dev+0xe2/0x170
[ 9225.681130][   T10]      inet6_addr_add+0x12f/0xa40
[ 9225.681130][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9225.681130][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.681130][   T10]      netlink_rcv_skb+0x130/0x360
[ 9225.681130][   T10]      netlink_unicast+0x449/0x710
[ 9225.681130][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9225.681130][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.681130][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.681130][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.681130][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.681130][   T10] 
[ 9225.683118][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.683118][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9225.683118][   T10]      ipv6_find_idev+0x102/0x170
[ 9225.683118][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9225.683118][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.683118][   T10]      netlink_rcv_skb+0x130/0x360
[ 9225.683118][   T10]      netlink_unicast+0x449/0x710
[ 9225.683118][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9225.683118][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.683118][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.683118][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.683118][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.683118][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.683118][   T10] 
[ 9225.684663][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9225.684663][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9225.684663][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9225.684663][   T10]      ipv6_find_idev+0x102/0x170
[ 9225.684663][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9225.684663][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9225.684663][   T10]      netlink_rcv_skb+0x130/0x360
[ 9225.684663][   T10]      netlink_unicast+0x449/0x710
[ 9225.684663][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9225.684663][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9225.684663][   T10]      ___sys_sendmsg+0xee/0x170
[ 9225.684663][   T10]      __sys_sendmsg+0xcd/0x170
[ 9225.684663][   T10]      do_syscall_64+0xc6/0x1e0
[ 9225.684663][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9225.684663][   T10] 
[ 9235.646819][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9235.647325][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9235.647325][T12167]      netdev_get_by_index+0x5e/0x80
[ 9235.647325][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9235.647325][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9235.647325][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9235.647325][T12167]      ipv6_add_addr+0x411/0x2000
[ 9235.647325][T12167]      inet6_addr_add+0x30e/0xa40
[ 9235.647325][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9235.647325][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.647325][T12167]      netlink_rcv_skb+0x130/0x360
[ 9235.647325][T12167]      netlink_unicast+0x449/0x710
[ 9235.647325][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9235.647325][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.647325][T12167]      ___sys_sendmsg+0xee/0x170
[ 9235.647325][T12167]      __sys_sendmsg+0xcd/0x170
[ 9235.647325][T12167]      do_syscall_64+0xc6/0x1e0
[ 9235.647325][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.647325][T12167] 
[ 9235.649622][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9235.649622][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9235.649622][T12167]      ipv6_find_idev+0x102/0x170
[ 9235.649622][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9235.649622][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.649622][T12167]      netlink_rcv_skb+0x130/0x360
[ 9235.649622][T12167]      netlink_unicast+0x449/0x710
[ 9235.649622][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9235.649622][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.649622][T12167]      ___sys_sendmsg+0xee/0x170
[ 9235.649622][T12167]      __sys_sendmsg+0xcd/0x170
[ 9235.649622][T12167]      do_syscall_64+0xc6/0x1e0
[ 9235.649622][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.649622][T12167] 
[ 9235.651377][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9235.651377][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9235.651377][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9235.651377][T12167]      ipv6_find_idev+0x102/0x170
[ 9235.651377][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9235.651377][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.651377][T12167]      netlink_rcv_skb+0x130/0x360
[ 9235.651377][T12167]      netlink_unicast+0x449/0x710
[ 9235.651377][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9235.651377][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.651377][T12167]      ___sys_sendmsg+0xee/0x170
[ 9235.651377][T12167]      __sys_sendmsg+0xcd/0x170
[ 9235.651377][T12167]      do_syscall_64+0xc6/0x1e0
[ 9235.651377][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.651377][T12167] 
[ 9235.926832][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9235.927236][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9235.927236][   T10]      dst_init+0x84/0x4a0
[ 9235.927236][   T10]      dst_alloc+0x97/0x150
[ 9235.927236][   T10]      ip6_dst_alloc+0x23/0x90
[ 9235.927236][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9235.927236][   T10]      ip6_pol_route+0x56f/0x840
[ 9235.927236][   T10]      fib6_rule_lookup+0x334/0x630
[ 9235.927236][   T10]      ip6_route_output_flags+0x259/0x480
[ 9235.927236][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9235.927236][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9235.927236][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9235.927236][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9235.927236][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.927236][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.927236][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.927236][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.927236][   T10] 
[ 9235.929133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.929133][   T10]      dst_init+0x84/0x4a0
[ 9235.929133][   T10]      dst_alloc+0x97/0x150
[ 9235.929133][   T10]      ip6_dst_alloc+0x23/0x90
[ 9235.929133][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9235.929133][   T10]      ip6_pol_route+0x56f/0x840
[ 9235.929133][   T10]      fib6_rule_lookup+0x334/0x630
[ 9235.929133][   T10]      ip6_route_output_flags+0x259/0x480
[ 9235.929133][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9235.929133][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9235.929133][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9235.929133][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9235.929133][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9235.929133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.929133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.929133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.929133][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.929133][   T10] 
[ 9235.931140][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.931140][   T10]      dst_init+0x84/0x4a0
[ 9235.931140][   T10]      dst_alloc+0x97/0x150
[ 9235.931140][   T10]      ip6_dst_alloc+0x23/0x90
[ 9235.931140][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9235.931140][   T10]      ip6_pol_route+0x56f/0x840
[ 9235.931140][   T10]      fib6_rule_lookup+0x334/0x630
[ 9235.931140][   T10]      ip6_route_output_flags+0x259/0x480
[ 9235.931140][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9235.931140][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9235.931140][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9235.931140][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9235.931140][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9235.931140][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.931140][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.931140][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.931140][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.931140][   T10] 
[ 9235.933150][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.933150][   T10]      netdev_get_by_index+0x5e/0x80
[ 9235.933150][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9235.933150][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9235.933150][   T10]      ip6_route_add+0x1c/0x140
[ 9235.933150][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9235.933150][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9235.933150][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9235.933150][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.933150][   T10]      netlink_rcv_skb+0x130/0x360
[ 9235.933150][   T10]      netlink_unicast+0x449/0x710
[ 9235.933150][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9235.933150][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.933150][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.933150][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.933150][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.933150][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.933150][   T10] 
[ 9235.935155][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.935155][   T10]      netdev_get_by_index+0x5e/0x80
[ 9235.935155][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9235.935155][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9235.935155][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9235.935155][   T10]      ipv6_add_addr+0x411/0x2000
[ 9235.935155][   T10]      inet6_addr_add+0x30e/0xa40
[ 9235.935155][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9235.935155][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.935155][   T10]      netlink_rcv_skb+0x130/0x360
[ 9235.935155][   T10]      netlink_unicast+0x449/0x710
[ 9235.935155][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9235.935155][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.935155][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.935155][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.935155][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.935155][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.935155][   T10] 
[ 9235.937151][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.937151][   T10]      netdev_get_by_index+0x5e/0x80
[ 9235.937151][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9235.937151][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9235.937151][   T10]      ip6_route_add+0x1c/0x140
[ 9235.937151][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9235.937151][   T10]      addrconf_add_dev+0xe2/0x170
[ 9235.937151][   T10]      inet6_addr_add+0x12f/0xa40
[ 9235.937151][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9235.937151][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.937151][   T10]      netlink_rcv_skb+0x130/0x360
[ 9235.937151][   T10]      netlink_unicast+0x449/0x710
[ 9235.937151][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9235.937151][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.937151][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.937151][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.937151][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.937151][   T10] 
[ 9235.939122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.939122][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9235.939122][   T10]      ipv6_find_idev+0x102/0x170
[ 9235.939122][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9235.939122][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.939122][   T10]      netlink_rcv_skb+0x130/0x360
[ 9235.939122][   T10]      netlink_unicast+0x449/0x710
[ 9235.939122][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9235.939122][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.939122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.939122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.939122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.939122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.939122][   T10] 
[ 9235.940661][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9235.940661][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9235.940661][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9235.940661][   T10]      ipv6_find_idev+0x102/0x170
[ 9235.940661][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9235.940661][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9235.940661][   T10]      netlink_rcv_skb+0x130/0x360
[ 9235.940661][   T10]      netlink_unicast+0x449/0x710
[ 9235.940661][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9235.940661][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9235.940661][   T10]      ___sys_sendmsg+0xee/0x170
[ 9235.940661][   T10]      __sys_sendmsg+0xcd/0x170
[ 9235.940661][   T10]      do_syscall_64+0xc6/0x1e0
[ 9235.940661][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9235.940661][   T10] 
[ 9245.894802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9245.895316][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9245.895316][T12167]      netdev_get_by_index+0x5e/0x80
[ 9245.895316][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9245.895316][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9245.895316][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9245.895316][T12167]      ipv6_add_addr+0x411/0x2000
[ 9245.895316][T12167]      inet6_addr_add+0x30e/0xa40
[ 9245.895316][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9245.895316][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9245.895316][T12167]      netlink_rcv_skb+0x130/0x360
[ 9245.895316][T12167]      netlink_unicast+0x449/0x710
[ 9245.895316][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9245.895316][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9245.895316][T12167]      ___sys_sendmsg+0xee/0x170
[ 9245.895316][T12167]      __sys_sendmsg+0xcd/0x170
[ 9245.895316][T12167]      do_syscall_64+0xc6/0x1e0
[ 9245.895316][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9245.895316][T12167] 
[ 9245.897606][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9245.897606][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9245.897606][T12167]      ipv6_find_idev+0x102/0x170
[ 9245.897606][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9245.897606][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9245.897606][T12167]      netlink_rcv_skb+0x130/0x360
[ 9245.897606][T12167]      netlink_unicast+0x449/0x710
[ 9245.897606][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9245.897606][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9245.897606][T12167]      ___sys_sendmsg+0xee/0x170
[ 9245.897606][T12167]      __sys_sendmsg+0xcd/0x170
[ 9245.897606][T12167]      do_syscall_64+0xc6/0x1e0
[ 9245.897606][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9245.897606][T12167] 
[ 9245.899376][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9245.899376][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9245.899376][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9245.899376][T12167]      ipv6_find_idev+0x102/0x170
[ 9245.899376][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9245.899376][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9245.899376][T12167]      netlink_rcv_skb+0x130/0x360
[ 9245.899376][T12167]      netlink_unicast+0x449/0x710
[ 9245.899376][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9245.899376][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9245.899376][T12167]      ___sys_sendmsg+0xee/0x170
[ 9245.899376][T12167]      __sys_sendmsg+0xcd/0x170
[ 9245.899376][T12167]      do_syscall_64+0xc6/0x1e0
[ 9245.899376][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9245.899376][T12167] 
[ 9246.182811][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9246.183209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9246.183209][   T10]      dst_init+0x84/0x4a0
[ 9246.183209][   T10]      dst_alloc+0x97/0x150
[ 9246.183209][   T10]      ip6_dst_alloc+0x23/0x90
[ 9246.183209][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9246.183209][   T10]      ip6_pol_route+0x56f/0x840
[ 9246.183209][   T10]      fib6_rule_lookup+0x334/0x630
[ 9246.183209][   T10]      ip6_route_output_flags+0x259/0x480
[ 9246.183209][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9246.183209][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9246.183209][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9246.183209][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9246.183209][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.183209][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.183209][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.183209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.183209][   T10] 
[ 9246.185101][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.185101][   T10]      dst_init+0x84/0x4a0
[ 9246.185101][   T10]      dst_alloc+0x97/0x150
[ 9246.185101][   T10]      ip6_dst_alloc+0x23/0x90
[ 9246.185101][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9246.185101][   T10]      ip6_pol_route+0x56f/0x840
[ 9246.185101][   T10]      fib6_rule_lookup+0x334/0x630
[ 9246.185101][   T10]      ip6_route_output_flags+0x259/0x480
[ 9246.185101][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9246.185101][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9246.185101][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9246.185101][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9246.185101][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9246.185101][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.185101][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.185101][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.185101][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.185101][   T10] 
[ 9246.187088][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.187088][   T10]      dst_init+0x84/0x4a0
[ 9246.187088][   T10]      dst_alloc+0x97/0x150
[ 9246.187088][   T10]      ip6_dst_alloc+0x23/0x90
[ 9246.187088][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9246.187088][   T10]      ip6_pol_route+0x56f/0x840
[ 9246.187088][   T10]      fib6_rule_lookup+0x334/0x630
[ 9246.187088][   T10]      ip6_route_output_flags+0x259/0x480
[ 9246.187088][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9246.187088][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9246.187088][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9246.187088][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9246.187088][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9246.187088][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.187088][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.187088][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.187088][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.187088][   T10] 
[ 9246.189171][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.189171][   T10]      netdev_get_by_index+0x5e/0x80
[ 9246.189171][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9246.189171][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9246.189171][   T10]      ip6_route_add+0x1c/0x140
[ 9246.189171][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9246.189171][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9246.189171][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9246.189171][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9246.189171][   T10]      netlink_rcv_skb+0x130/0x360
[ 9246.189171][   T10]      netlink_unicast+0x449/0x710
[ 9246.189171][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9246.189171][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9246.189171][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.189171][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.189171][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.189171][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.189171][   T10] 
[ 9246.191183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.191183][   T10]      netdev_get_by_index+0x5e/0x80
[ 9246.191183][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9246.191183][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9246.191183][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9246.191183][   T10]      ipv6_add_addr+0x411/0x2000
[ 9246.191183][   T10]      inet6_addr_add+0x30e/0xa40
[ 9246.191183][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9246.191183][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9246.191183][   T10]      netlink_rcv_skb+0x130/0x360
[ 9246.191183][   T10]      netlink_unicast+0x449/0x710
[ 9246.191183][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9246.191183][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9246.191183][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.191183][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.191183][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.191183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.191183][   T10] 
[ 9246.193201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.193201][   T10]      netdev_get_by_index+0x5e/0x80
[ 9246.193201][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9246.193201][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9246.193201][   T10]      ip6_route_add+0x1c/0x140
[ 9246.193201][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9246.193201][   T10]      addrconf_add_dev+0xe2/0x170
[ 9246.193201][   T10]      inet6_addr_add+0x12f/0xa40
[ 9246.193201][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9246.193201][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9246.193201][   T10]      netlink_rcv_skb+0x130/0x360
[ 9246.193201][   T10]      netlink_unicast+0x449/0x710
[ 9246.193201][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9246.193201][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9246.193201][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.193201][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.193201][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.193201][   T10] 
[ 9246.195162][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.195162][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9246.195162][   T10]      ipv6_find_idev+0x102/0x170
[ 9246.195162][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9246.195162][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9246.195162][   T10]      netlink_rcv_skb+0x130/0x360
[ 9246.195162][   T10]      netlink_unicast+0x449/0x710
[ 9246.195162][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9246.195162][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9246.195162][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.195162][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.195162][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.195162][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.195162][   T10] 
[ 9246.196694][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9246.196694][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9246.196694][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9246.196694][   T10]      ipv6_find_idev+0x102/0x170
[ 9246.196694][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9246.196694][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9246.196694][   T10]      netlink_rcv_skb+0x130/0x360
[ 9246.196694][   T10]      netlink_unicast+0x449/0x710
[ 9246.196694][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9246.196694][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9246.196694][   T10]      ___sys_sendmsg+0xee/0x170
[ 9246.196694][   T10]      __sys_sendmsg+0xcd/0x170
[ 9246.196694][   T10]      do_syscall_64+0xc6/0x1e0
[ 9246.196694][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9246.196694][   T10] 
[ 9256.142746][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9256.143243][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9256.143243][T12167]      netdev_get_by_index+0x5e/0x80
[ 9256.143243][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9256.143243][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9256.143243][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9256.143243][T12167]      ipv6_add_addr+0x411/0x2000
[ 9256.143243][T12167]      inet6_addr_add+0x30e/0xa40
[ 9256.143243][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9256.143243][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.143243][T12167]      netlink_rcv_skb+0x130/0x360
[ 9256.143243][T12167]      netlink_unicast+0x449/0x710
[ 9256.143243][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9256.143243][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.143243][T12167]      ___sys_sendmsg+0xee/0x170
[ 9256.143243][T12167]      __sys_sendmsg+0xcd/0x170
[ 9256.143243][T12167]      do_syscall_64+0xc6/0x1e0
[ 9256.143243][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.143243][T12167] 
[ 9256.145538][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9256.145538][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9256.145538][T12167]      ipv6_find_idev+0x102/0x170
[ 9256.145538][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9256.145538][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.145538][T12167]      netlink_rcv_skb+0x130/0x360
[ 9256.145538][T12167]      netlink_unicast+0x449/0x710
[ 9256.145538][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9256.145538][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.145538][T12167]      ___sys_sendmsg+0xee/0x170
[ 9256.145538][T12167]      __sys_sendmsg+0xcd/0x170
[ 9256.145538][T12167]      do_syscall_64+0xc6/0x1e0
[ 9256.145538][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.145538][T12167] 
[ 9256.147291][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9256.147291][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9256.147291][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9256.147291][T12167]      ipv6_find_idev+0x102/0x170
[ 9256.147291][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9256.147291][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.147291][T12167]      netlink_rcv_skb+0x130/0x360
[ 9256.147291][T12167]      netlink_unicast+0x449/0x710
[ 9256.147291][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9256.147291][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.147291][T12167]      ___sys_sendmsg+0xee/0x170
[ 9256.147291][T12167]      __sys_sendmsg+0xcd/0x170
[ 9256.147291][T12167]      do_syscall_64+0xc6/0x1e0
[ 9256.147291][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.147291][T12167] 
[ 9256.222743][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9256.223141][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9256.223141][   T10]      dst_init+0x84/0x4a0
[ 9256.223141][   T10]      dst_alloc+0x97/0x150
[ 9256.223141][   T10]      ip6_dst_alloc+0x23/0x90
[ 9256.223141][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9256.223141][   T10]      ip6_pol_route+0x56f/0x840
[ 9256.223141][   T10]      fib6_rule_lookup+0x334/0x630
[ 9256.223141][   T10]      ip6_route_output_flags+0x259/0x480
[ 9256.223141][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9256.223141][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9256.223141][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9256.223141][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9256.223141][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.223141][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.223141][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.223141][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.223141][   T10] 
[ 9256.225033][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.225033][   T10]      dst_init+0x84/0x4a0
[ 9256.225033][   T10]      dst_alloc+0x97/0x150
[ 9256.225033][   T10]      ip6_dst_alloc+0x23/0x90
[ 9256.225033][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9256.225033][   T10]      ip6_pol_route+0x56f/0x840
[ 9256.225033][   T10]      fib6_rule_lookup+0x334/0x630
[ 9256.225033][   T10]      ip6_route_output_flags+0x259/0x480
[ 9256.225033][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9256.225033][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9256.225033][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9256.225033][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9256.225033][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9256.225033][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.225033][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.225033][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.225033][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.225033][   T10] 
[ 9256.227021][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.227021][   T10]      dst_init+0x84/0x4a0
[ 9256.227021][   T10]      dst_alloc+0x97/0x150
[ 9256.227021][   T10]      ip6_dst_alloc+0x23/0x90
[ 9256.227021][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9256.227021][   T10]      ip6_pol_route+0x56f/0x840
[ 9256.227021][   T10]      fib6_rule_lookup+0x334/0x630
[ 9256.227021][   T10]      ip6_route_output_flags+0x259/0x480
[ 9256.227021][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9256.227021][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9256.227021][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9256.227021][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9256.227021][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9256.227021][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.227021][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.227021][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.227021][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.227021][   T10] 
[ 9256.229018][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.229018][   T10]      netdev_get_by_index+0x5e/0x80
[ 9256.229018][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9256.229018][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9256.229018][   T10]      ip6_route_add+0x1c/0x140
[ 9256.229018][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9256.229018][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9256.229018][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9256.229018][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.229018][   T10]      netlink_rcv_skb+0x130/0x360
[ 9256.229018][   T10]      netlink_unicast+0x449/0x710
[ 9256.229018][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9256.229018][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.229018][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.229018][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.229018][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.229018][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.229018][   T10] 
[ 9256.231020][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.231020][   T10]      netdev_get_by_index+0x5e/0x80
[ 9256.231020][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9256.231020][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9256.231020][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9256.231020][   T10]      ipv6_add_addr+0x411/0x2000
[ 9256.231020][   T10]      inet6_addr_add+0x30e/0xa40
[ 9256.231020][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9256.231020][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.231020][   T10]      netlink_rcv_skb+0x130/0x360
[ 9256.231020][   T10]      netlink_unicast+0x449/0x710
[ 9256.231020][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9256.231020][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.231020][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.231020][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.231020][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.231020][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.231020][   T10] 
[ 9256.233020][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.233020][   T10]      netdev_get_by_index+0x5e/0x80
[ 9256.233020][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9256.233020][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9256.233020][   T10]      ip6_route_add+0x1c/0x140
[ 9256.233020][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9256.233020][   T10]      addrconf_add_dev+0xe2/0x170
[ 9256.233020][   T10]      inet6_addr_add+0x12f/0xa40
[ 9256.233020][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9256.233020][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.233020][   T10]      netlink_rcv_skb+0x130/0x360
[ 9256.233020][   T10]      netlink_unicast+0x449/0x710
[ 9256.233020][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9256.233020][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.233020][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.233020][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.233020][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.233020][   T10] 
[ 9256.234982][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.234982][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9256.234982][   T10]      ipv6_find_idev+0x102/0x170
[ 9256.234982][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9256.234982][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.234982][   T10]      netlink_rcv_skb+0x130/0x360
[ 9256.234982][   T10]      netlink_unicast+0x449/0x710
[ 9256.234982][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9256.234982][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.234982][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.234982][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.234982][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.234982][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.234982][   T10] 
[ 9256.236514][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9256.236514][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9256.236514][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9256.236514][   T10]      ipv6_find_idev+0x102/0x170
[ 9256.236514][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9256.236514][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9256.236514][   T10]      netlink_rcv_skb+0x130/0x360
[ 9256.236514][   T10]      netlink_unicast+0x449/0x710
[ 9256.236514][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9256.236514][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9256.236514][   T10]      ___sys_sendmsg+0xee/0x170
[ 9256.236514][   T10]      __sys_sendmsg+0xcd/0x170
[ 9256.236514][   T10]      do_syscall_64+0xc6/0x1e0
[ 9256.236514][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9256.236514][   T10] 
[ 9266.246874][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9266.247328][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9266.247328][   T10]      dst_init+0x84/0x4a0
[ 9266.247328][   T10]      dst_alloc+0x97/0x150
[ 9266.247328][   T10]      ip6_dst_alloc+0x23/0x90
[ 9266.247328][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9266.247328][   T10]      ip6_pol_route+0x56f/0x840
[ 9266.247328][   T10]      fib6_rule_lookup+0x334/0x630
[ 9266.247328][   T10]      ip6_route_output_flags+0x259/0x480
[ 9266.247328][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9266.247328][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9266.247328][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9266.247328][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9266.247328][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.247328][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.247328][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.247328][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.247328][   T10] 
[ 9266.249242][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.249242][   T10]      dst_init+0x84/0x4a0
[ 9266.249242][   T10]      dst_alloc+0x97/0x150
[ 9266.249242][   T10]      ip6_dst_alloc+0x23/0x90
[ 9266.249242][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9266.249242][   T10]      ip6_pol_route+0x56f/0x840
[ 9266.249242][   T10]      fib6_rule_lookup+0x334/0x630
[ 9266.249242][   T10]      ip6_route_output_flags+0x259/0x480
[ 9266.249242][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9266.249242][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9266.249242][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9266.249242][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9266.249242][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9266.249242][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.249242][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.249242][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.249242][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.249242][   T10] 
[ 9266.251237][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.251237][   T10]      dst_init+0x84/0x4a0
[ 9266.251237][   T10]      dst_alloc+0x97/0x150
[ 9266.251237][   T10]      ip6_dst_alloc+0x23/0x90
[ 9266.251237][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9266.251237][   T10]      ip6_pol_route+0x56f/0x840
[ 9266.251237][   T10]      fib6_rule_lookup+0x334/0x630
[ 9266.251237][   T10]      ip6_route_output_flags+0x259/0x480
[ 9266.251237][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9266.251237][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9266.251237][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9266.251237][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9266.251237][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9266.251237][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.251237][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.251237][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.251237][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.251237][   T10] 
[ 9266.253250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.253250][   T10]      netdev_get_by_index+0x5e/0x80
[ 9266.253250][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9266.253250][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9266.253250][   T10]      ip6_route_add+0x1c/0x140
[ 9266.253250][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9266.253250][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9266.253250][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9266.253250][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.253250][   T10]      netlink_rcv_skb+0x130/0x360
[ 9266.253250][   T10]      netlink_unicast+0x449/0x710
[ 9266.253250][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9266.253250][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.253250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.253250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.253250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.253250][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.253250][   T10] 
[ 9266.255255][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.255255][   T10]      netdev_get_by_index+0x5e/0x80
[ 9266.255255][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9266.255255][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9266.255255][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9266.255255][   T10]      ipv6_add_addr+0x411/0x2000
[ 9266.255255][   T10]      inet6_addr_add+0x30e/0xa40
[ 9266.255255][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9266.255255][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.255255][   T10]      netlink_rcv_skb+0x130/0x360
[ 9266.255255][   T10]      netlink_unicast+0x449/0x710
[ 9266.255255][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9266.255255][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.255255][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.255255][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.255255][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.255255][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.255255][   T10] 
[ 9266.257256][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.257256][   T10]      netdev_get_by_index+0x5e/0x80
[ 9266.257256][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9266.257256][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9266.257256][   T10]      ip6_route_add+0x1c/0x140
[ 9266.257256][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9266.257256][   T10]      addrconf_add_dev+0xe2/0x170
[ 9266.257256][   T10]      inet6_addr_add+0x12f/0xa40
[ 9266.257256][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9266.257256][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.257256][   T10]      netlink_rcv_skb+0x130/0x360
[ 9266.257256][   T10]      netlink_unicast+0x449/0x710
[ 9266.257256][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9266.257256][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.257256][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.257256][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.257256][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.257256][   T10] 
[ 9266.259218][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.259218][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9266.259218][   T10]      ipv6_find_idev+0x102/0x170
[ 9266.259218][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9266.259218][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.259218][   T10]      netlink_rcv_skb+0x130/0x360
[ 9266.259218][   T10]      netlink_unicast+0x449/0x710
[ 9266.259218][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9266.259218][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.259218][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.259218][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.259218][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.259218][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.259218][   T10] 
[ 9266.260754][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9266.260754][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9266.260754][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9266.260754][   T10]      ipv6_find_idev+0x102/0x170
[ 9266.260754][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9266.260754][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.260754][   T10]      netlink_rcv_skb+0x130/0x360
[ 9266.260754][   T10]      netlink_unicast+0x449/0x710
[ 9266.260754][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9266.260754][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.260754][   T10]      ___sys_sendmsg+0xee/0x170
[ 9266.260754][   T10]      __sys_sendmsg+0xcd/0x170
[ 9266.260754][   T10]      do_syscall_64+0xc6/0x1e0
[ 9266.260754][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.260754][   T10] 
[ 9266.390803][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9266.391242][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9266.391242][T12167]      netdev_get_by_index+0x5e/0x80
[ 9266.391242][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9266.391242][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9266.391242][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9266.391242][T12167]      ipv6_add_addr+0x411/0x2000
[ 9266.391242][T12167]      inet6_addr_add+0x30e/0xa40
[ 9266.391242][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9266.391242][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.391242][T12167]      netlink_rcv_skb+0x130/0x360
[ 9266.391242][T12167]      netlink_unicast+0x449/0x710
[ 9266.391242][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9266.391242][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.391242][T12167]      ___sys_sendmsg+0xee/0x170
[ 9266.391242][T12167]      __sys_sendmsg+0xcd/0x170
[ 9266.391242][T12167]      do_syscall_64+0xc6/0x1e0
[ 9266.391242][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.391242][T12167] 
[ 9266.393578][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9266.393578][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9266.393578][T12167]      ipv6_find_idev+0x102/0x170
[ 9266.393578][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9266.393578][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.393578][T12167]      netlink_rcv_skb+0x130/0x360
[ 9266.393578][T12167]      netlink_unicast+0x449/0x710
[ 9266.393578][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9266.393578][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.393578][T12167]      ___sys_sendmsg+0xee/0x170
[ 9266.393578][T12167]      __sys_sendmsg+0xcd/0x170
[ 9266.393578][T12167]      do_syscall_64+0xc6/0x1e0
[ 9266.393578][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.393578][T12167] 
[ 9266.395334][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9266.395334][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9266.395334][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9266.395334][T12167]      ipv6_find_idev+0x102/0x170
[ 9266.395334][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9266.395334][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9266.395334][T12167]      netlink_rcv_skb+0x130/0x360
[ 9266.395334][T12167]      netlink_unicast+0x449/0x710
[ 9266.395334][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9266.395334][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9266.395334][T12167]      ___sys_sendmsg+0xee/0x170
[ 9266.395334][T12167]      __sys_sendmsg+0xcd/0x170
[ 9266.395334][T12167]      do_syscall_64+0xc6/0x1e0
[ 9266.395334][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9266.395334][T12167] 
[ 9276.294722][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9276.295177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9276.295177][   T10]      dst_init+0x84/0x4a0
[ 9276.295177][   T10]      dst_alloc+0x97/0x150
[ 9276.295177][   T10]      ip6_dst_alloc+0x23/0x90
[ 9276.295177][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9276.295177][   T10]      ip6_pol_route+0x56f/0x840
[ 9276.295177][   T10]      fib6_rule_lookup+0x334/0x630
[ 9276.295177][   T10]      ip6_route_output_flags+0x259/0x480
[ 9276.295177][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9276.295177][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9276.295177][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9276.295177][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9276.295177][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.295177][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.295177][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.295177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.295177][   T10] 
[ 9276.297102][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.297102][   T10]      dst_init+0x84/0x4a0
[ 9276.297102][   T10]      dst_alloc+0x97/0x150
[ 9276.297102][   T10]      ip6_dst_alloc+0x23/0x90
[ 9276.297102][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9276.297102][   T10]      ip6_pol_route+0x56f/0x840
[ 9276.297102][   T10]      fib6_rule_lookup+0x334/0x630
[ 9276.297102][   T10]      ip6_route_output_flags+0x259/0x480
[ 9276.297102][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9276.297102][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9276.297102][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9276.297102][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9276.297102][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9276.297102][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.297102][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.297102][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.297102][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.297102][   T10] 
[ 9276.299117][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.299117][   T10]      dst_init+0x84/0x4a0
[ 9276.299117][   T10]      dst_alloc+0x97/0x150
[ 9276.299117][   T10]      ip6_dst_alloc+0x23/0x90
[ 9276.299117][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9276.299117][   T10]      ip6_pol_route+0x56f/0x840
[ 9276.299117][   T10]      fib6_rule_lookup+0x334/0x630
[ 9276.299117][   T10]      ip6_route_output_flags+0x259/0x480
[ 9276.299117][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9276.299117][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9276.299117][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9276.299117][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9276.299117][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9276.299117][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.299117][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.299117][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.299117][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.299117][   T10] 
[ 9276.301158][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.301158][   T10]      netdev_get_by_index+0x5e/0x80
[ 9276.301158][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9276.301158][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9276.301158][   T10]      ip6_route_add+0x1c/0x140
[ 9276.301158][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9276.301158][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9276.301158][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9276.301158][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.301158][   T10]      netlink_rcv_skb+0x130/0x360
[ 9276.301158][   T10]      netlink_unicast+0x449/0x710
[ 9276.301158][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9276.301158][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.301158][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.301158][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.301158][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.301158][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.301158][   T10] 
[ 9276.303174][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.303174][   T10]      netdev_get_by_index+0x5e/0x80
[ 9276.303174][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9276.303174][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9276.303174][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9276.303174][   T10]      ipv6_add_addr+0x411/0x2000
[ 9276.303174][   T10]      inet6_addr_add+0x30e/0xa40
[ 9276.303174][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9276.303174][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.303174][   T10]      netlink_rcv_skb+0x130/0x360
[ 9276.303174][   T10]      netlink_unicast+0x449/0x710
[ 9276.303174][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9276.303174][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.303174][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.303174][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.303174][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.303174][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.303174][   T10] 
[ 9276.305311][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.305311][   T10]      netdev_get_by_index+0x5e/0x80
[ 9276.305311][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9276.305311][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9276.305311][   T10]      ip6_route_add+0x1c/0x140
[ 9276.305311][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9276.305311][   T10]      addrconf_add_dev+0xe2/0x170
[ 9276.305311][   T10]      inet6_addr_add+0x12f/0xa40
[ 9276.305311][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9276.305311][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.305311][   T10]      netlink_rcv_skb+0x130/0x360
[ 9276.305311][   T10]      netlink_unicast+0x449/0x710
[ 9276.305311][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9276.305311][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.305311][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.305311][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.305311][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.305311][   T10] 
[ 9276.307297][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.307297][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9276.307297][   T10]      ipv6_find_idev+0x102/0x170
[ 9276.307297][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9276.307297][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.307297][   T10]      netlink_rcv_skb+0x130/0x360
[ 9276.307297][   T10]      netlink_unicast+0x449/0x710
[ 9276.307297][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9276.307297][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.307297][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.307297][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.307297][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.307297][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.307297][   T10] 
[ 9276.308850][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9276.308850][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9276.308850][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9276.308850][   T10]      ipv6_find_idev+0x102/0x170
[ 9276.308850][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9276.308850][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.308850][   T10]      netlink_rcv_skb+0x130/0x360
[ 9276.308850][   T10]      netlink_unicast+0x449/0x710
[ 9276.308850][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9276.308850][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.308850][   T10]      ___sys_sendmsg+0xee/0x170
[ 9276.308850][   T10]      __sys_sendmsg+0xcd/0x170
[ 9276.308850][   T10]      do_syscall_64+0xc6/0x1e0
[ 9276.308850][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.308850][   T10] 
[ 9276.638882][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9276.639325][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9276.639325][T12167]      netdev_get_by_index+0x5e/0x80
[ 9276.639325][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9276.639325][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9276.639325][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9276.639325][T12167]      ipv6_add_addr+0x411/0x2000
[ 9276.639325][T12167]      inet6_addr_add+0x30e/0xa40
[ 9276.639325][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9276.639325][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.639325][T12167]      netlink_rcv_skb+0x130/0x360
[ 9276.639325][T12167]      netlink_unicast+0x449/0x710
[ 9276.639325][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9276.639325][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.639325][T12167]      ___sys_sendmsg+0xee/0x170
[ 9276.639325][T12167]      __sys_sendmsg+0xcd/0x170
[ 9276.639325][T12167]      do_syscall_64+0xc6/0x1e0
[ 9276.639325][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.639325][T12167] 
[ 9276.641687][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9276.641687][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9276.641687][T12167]      ipv6_find_idev+0x102/0x170
[ 9276.641687][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9276.641687][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.641687][T12167]      netlink_rcv_skb+0x130/0x360
[ 9276.641687][T12167]      netlink_unicast+0x449/0x710
[ 9276.641687][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9276.641687][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.641687][T12167]      ___sys_sendmsg+0xee/0x170
[ 9276.641687][T12167]      __sys_sendmsg+0xcd/0x170
[ 9276.641687][T12167]      do_syscall_64+0xc6/0x1e0
[ 9276.641687][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.641687][T12167] 
[ 9276.643442][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9276.643442][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9276.643442][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9276.643442][T12167]      ipv6_find_idev+0x102/0x170
[ 9276.643442][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9276.643442][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9276.643442][T12167]      netlink_rcv_skb+0x130/0x360
[ 9276.643442][T12167]      netlink_unicast+0x449/0x710
[ 9276.643442][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9276.643442][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9276.643442][T12167]      ___sys_sendmsg+0xee/0x170
[ 9276.643442][T12167]      __sys_sendmsg+0xcd/0x170
[ 9276.643442][T12167]      do_syscall_64+0xc6/0x1e0
[ 9276.643442][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9276.643442][T12167] 
[ 9286.550837][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9286.551359][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9286.551359][   T10]      dst_init+0x84/0x4a0
[ 9286.551359][   T10]      dst_alloc+0x97/0x150
[ 9286.551359][   T10]      ip6_dst_alloc+0x23/0x90
[ 9286.551359][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9286.551359][   T10]      ip6_pol_route+0x56f/0x840
[ 9286.551359][   T10]      fib6_rule_lookup+0x334/0x630
[ 9286.551359][   T10]      ip6_route_output_flags+0x259/0x480
[ 9286.551359][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9286.551359][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9286.551359][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9286.551359][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9286.551359][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.551359][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.551359][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.551359][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.551359][   T10] 
[ 9286.553413][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.553413][   T10]      dst_init+0x84/0x4a0
[ 9286.553413][   T10]      dst_alloc+0x97/0x150
[ 9286.553413][   T10]      ip6_dst_alloc+0x23/0x90
[ 9286.553413][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9286.553413][   T10]      ip6_pol_route+0x56f/0x840
[ 9286.553413][   T10]      fib6_rule_lookup+0x334/0x630
[ 9286.553413][   T10]      ip6_route_output_flags+0x259/0x480
[ 9286.553413][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9286.553413][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9286.553413][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9286.553413][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9286.553413][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9286.553413][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.553413][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.553413][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.553413][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.553413][   T10] 
[ 9286.555484][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.555484][   T10]      dst_init+0x84/0x4a0
[ 9286.555484][   T10]      dst_alloc+0x97/0x150
[ 9286.555484][   T10]      ip6_dst_alloc+0x23/0x90
[ 9286.555484][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9286.555484][   T10]      ip6_pol_route+0x56f/0x840
[ 9286.555484][   T10]      fib6_rule_lookup+0x334/0x630
[ 9286.555484][   T10]      ip6_route_output_flags+0x259/0x480
[ 9286.555484][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9286.555484][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9286.555484][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9286.555484][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9286.555484][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9286.555484][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.555484][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.555484][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.555484][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.555484][   T10] 
[ 9286.557535][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.557535][   T10]      netdev_get_by_index+0x5e/0x80
[ 9286.557535][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9286.557535][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9286.557535][   T10]      ip6_route_add+0x1c/0x140
[ 9286.557535][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9286.557535][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9286.557535][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9286.557535][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.557535][   T10]      netlink_rcv_skb+0x130/0x360
[ 9286.557535][   T10]      netlink_unicast+0x449/0x710
[ 9286.557535][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9286.557535][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.557535][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.557535][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.557535][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.557535][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.557535][   T10] 
[ 9286.561817][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.561817][   T10]      netdev_get_by_index+0x5e/0x80
[ 9286.561817][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9286.561817][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9286.561817][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9286.561817][   T10]      ipv6_add_addr+0x411/0x2000
[ 9286.561817][   T10]      inet6_addr_add+0x30e/0xa40
[ 9286.561817][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9286.561817][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.561817][   T10]      netlink_rcv_skb+0x130/0x360
[ 9286.561817][   T10]      netlink_unicast+0x449/0x710
[ 9286.561817][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9286.561817][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.561817][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.561817][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.561817][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.561817][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.561817][   T10] 
[ 9286.563868][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.563868][   T10]      netdev_get_by_index+0x5e/0x80
[ 9286.563868][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9286.563868][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9286.563868][   T10]      ip6_route_add+0x1c/0x140
[ 9286.563868][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9286.563868][   T10]      addrconf_add_dev+0xe2/0x170
[ 9286.563868][   T10]      inet6_addr_add+0x12f/0xa40
[ 9286.563868][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9286.563868][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.563868][   T10]      netlink_rcv_skb+0x130/0x360
[ 9286.563868][   T10]      netlink_unicast+0x449/0x710
[ 9286.563868][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9286.563868][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.563868][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.563868][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.563868][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.563868][   T10] 
[ 9286.565883][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.565883][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9286.565883][   T10]      ipv6_find_idev+0x102/0x170
[ 9286.565883][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9286.565883][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.565883][   T10]      netlink_rcv_skb+0x130/0x360
[ 9286.565883][   T10]      netlink_unicast+0x449/0x710
[ 9286.565883][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9286.565883][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.565883][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.565883][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.565883][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.565883][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.565883][   T10] 
[ 9286.567467][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9286.567467][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9286.567467][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9286.567467][   T10]      ipv6_find_idev+0x102/0x170
[ 9286.567467][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9286.567467][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.567467][   T10]      netlink_rcv_skb+0x130/0x360
[ 9286.567467][   T10]      netlink_unicast+0x449/0x710
[ 9286.567467][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9286.567467][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.567467][   T10]      ___sys_sendmsg+0xee/0x170
[ 9286.567467][   T10]      __sys_sendmsg+0xcd/0x170
[ 9286.567467][   T10]      do_syscall_64+0xc6/0x1e0
[ 9286.567467][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.567467][   T10] 
[ 9286.886741][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9286.887186][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9286.887186][T12167]      netdev_get_by_index+0x5e/0x80
[ 9286.887186][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9286.887186][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9286.887186][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9286.887186][T12167]      ipv6_add_addr+0x411/0x2000
[ 9286.887186][T12167]      inet6_addr_add+0x30e/0xa40
[ 9286.887186][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9286.887186][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.887186][T12167]      netlink_rcv_skb+0x130/0x360
[ 9286.887186][T12167]      netlink_unicast+0x449/0x710
[ 9286.887186][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9286.887186][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.887186][T12167]      ___sys_sendmsg+0xee/0x170
[ 9286.887186][T12167]      __sys_sendmsg+0xcd/0x170
[ 9286.887186][T12167]      do_syscall_64+0xc6/0x1e0
[ 9286.887186][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.887186][T12167] 
[ 9286.889454][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9286.889454][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9286.889454][T12167]      ipv6_find_idev+0x102/0x170
[ 9286.889454][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9286.889454][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.889454][T12167]      netlink_rcv_skb+0x130/0x360
[ 9286.889454][T12167]      netlink_unicast+0x449/0x710
[ 9286.889454][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9286.889454][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.889454][T12167]      ___sys_sendmsg+0xee/0x170
[ 9286.889454][T12167]      __sys_sendmsg+0xcd/0x170
[ 9286.889454][T12167]      do_syscall_64+0xc6/0x1e0
[ 9286.889454][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.889454][T12167] 
[ 9286.891197][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9286.891197][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9286.891197][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9286.891197][T12167]      ipv6_find_idev+0x102/0x170
[ 9286.891197][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9286.891197][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9286.891197][T12167]      netlink_rcv_skb+0x130/0x360
[ 9286.891197][T12167]      netlink_unicast+0x449/0x710
[ 9286.891197][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9286.891197][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9286.891197][T12167]      ___sys_sendmsg+0xee/0x170
[ 9286.891197][T12167]      __sys_sendmsg+0xcd/0x170
[ 9286.891197][T12167]      do_syscall_64+0xc6/0x1e0
[ 9286.891197][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9286.891197][T12167] 
[ 9296.806826][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9296.807289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9296.807289][   T10]      dst_init+0x84/0x4a0
[ 9296.807289][   T10]      dst_alloc+0x97/0x150
[ 9296.807289][   T10]      ip6_dst_alloc+0x23/0x90
[ 9296.807289][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9296.807289][   T10]      ip6_pol_route+0x56f/0x840
[ 9296.807289][   T10]      fib6_rule_lookup+0x334/0x630
[ 9296.807289][   T10]      ip6_route_output_flags+0x259/0x480
[ 9296.807289][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9296.807289][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9296.807289][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9296.807289][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9296.807289][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.807289][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.807289][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.807289][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.807289][   T10] 
[ 9296.809228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.809228][   T10]      dst_init+0x84/0x4a0
[ 9296.809228][   T10]      dst_alloc+0x97/0x150
[ 9296.809228][   T10]      ip6_dst_alloc+0x23/0x90
[ 9296.809228][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9296.809228][   T10]      ip6_pol_route+0x56f/0x840
[ 9296.809228][   T10]      fib6_rule_lookup+0x334/0x630
[ 9296.809228][   T10]      ip6_route_output_flags+0x259/0x480
[ 9296.809228][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9296.809228][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9296.809228][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9296.809228][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9296.809228][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9296.809228][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.809228][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.809228][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.809228][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.809228][   T10] 
[ 9296.811236][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.811236][   T10]      dst_init+0x84/0x4a0
[ 9296.811236][   T10]      dst_alloc+0x97/0x150
[ 9296.811236][   T10]      ip6_dst_alloc+0x23/0x90
[ 9296.811236][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9296.811236][   T10]      ip6_pol_route+0x56f/0x840
[ 9296.811236][   T10]      fib6_rule_lookup+0x334/0x630
[ 9296.811236][   T10]      ip6_route_output_flags+0x259/0x480
[ 9296.811236][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9296.811236][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9296.811236][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9296.811236][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9296.811236][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9296.811236][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.811236][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.811236][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.811236][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.811236][   T10] 
[ 9296.813264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.813264][   T10]      netdev_get_by_index+0x5e/0x80
[ 9296.813264][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9296.813264][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9296.813264][   T10]      ip6_route_add+0x1c/0x140
[ 9296.813264][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9296.813264][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9296.813264][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9296.813264][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9296.813264][   T10]      netlink_rcv_skb+0x130/0x360
[ 9296.813264][   T10]      netlink_unicast+0x449/0x710
[ 9296.813264][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9296.813264][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9296.813264][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.813264][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.813264][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.813264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.813264][   T10] 
[ 9296.815280][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.815280][   T10]      netdev_get_by_index+0x5e/0x80
[ 9296.815280][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9296.815280][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9296.815280][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9296.815280][   T10]      ipv6_add_addr+0x411/0x2000
[ 9296.815280][   T10]      inet6_addr_add+0x30e/0xa40
[ 9296.815280][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9296.815280][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9296.815280][   T10]      netlink_rcv_skb+0x130/0x360
[ 9296.815280][   T10]      netlink_unicast+0x449/0x710
[ 9296.815280][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9296.815280][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9296.815280][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.815280][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.815280][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.815280][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.815280][   T10] 
[ 9296.817290][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.817290][   T10]      netdev_get_by_index+0x5e/0x80
[ 9296.817290][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9296.817290][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9296.817290][   T10]      ip6_route_add+0x1c/0x140
[ 9296.817290][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9296.817290][   T10]      addrconf_add_dev+0xe2/0x170
[ 9296.817290][   T10]      inet6_addr_add+0x12f/0xa40
[ 9296.817290][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9296.817290][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9296.817290][   T10]      netlink_rcv_skb+0x130/0x360
[ 9296.817290][   T10]      netlink_unicast+0x449/0x710
[ 9296.817290][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9296.817290][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9296.817290][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.817290][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.817290][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.817290][   T10] 
[ 9296.819268][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.819268][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9296.819268][   T10]      ipv6_find_idev+0x102/0x170
[ 9296.819268][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9296.819268][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9296.819268][   T10]      netlink_rcv_skb+0x130/0x360
[ 9296.819268][   T10]      netlink_unicast+0x449/0x710
[ 9296.819268][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9296.819268][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9296.819268][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.819268][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.819268][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.819268][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.819268][   T10] 
[ 9296.820845][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9296.820845][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9296.820845][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9296.820845][   T10]      ipv6_find_idev+0x102/0x170
[ 9296.820845][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9296.820845][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9296.820845][   T10]      netlink_rcv_skb+0x130/0x360
[ 9296.820845][   T10]      netlink_unicast+0x449/0x710
[ 9296.820845][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9296.820845][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9296.820845][   T10]      ___sys_sendmsg+0xee/0x170
[ 9296.820845][   T10]      __sys_sendmsg+0xcd/0x170
[ 9296.820845][   T10]      do_syscall_64+0xc6/0x1e0
[ 9296.820845][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9296.820845][   T10] 
[ 9297.142800][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9297.143227][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9297.143227][T12167]      netdev_get_by_index+0x5e/0x80
[ 9297.143227][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9297.143227][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9297.143227][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9297.143227][T12167]      ipv6_add_addr+0x411/0x2000
[ 9297.143227][T12167]      inet6_addr_add+0x30e/0xa40
[ 9297.143227][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9297.143227][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9297.143227][T12167]      netlink_rcv_skb+0x130/0x360
[ 9297.143227][T12167]      netlink_unicast+0x449/0x710
[ 9297.143227][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9297.143227][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9297.143227][T12167]      ___sys_sendmsg+0xee/0x170
[ 9297.143227][T12167]      __sys_sendmsg+0xcd/0x170
[ 9297.143227][T12167]      do_syscall_64+0xc6/0x1e0
[ 9297.143227][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9297.143227][T12167] 
[ 9297.145509][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9297.145509][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9297.145509][T12167]      ipv6_find_idev+0x102/0x170
[ 9297.145509][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9297.145509][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9297.145509][T12167]      netlink_rcv_skb+0x130/0x360
[ 9297.145509][T12167]      netlink_unicast+0x449/0x710
[ 9297.145509][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9297.145509][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9297.145509][T12167]      ___sys_sendmsg+0xee/0x170
[ 9297.145509][T12167]      __sys_sendmsg+0xcd/0x170
[ 9297.145509][T12167]      do_syscall_64+0xc6/0x1e0
[ 9297.145509][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9297.145509][T12167] 
[ 9297.147234][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9297.147234][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9297.147234][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9297.147234][T12167]      ipv6_find_idev+0x102/0x170
[ 9297.147234][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9297.147234][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9297.147234][T12167]      netlink_rcv_skb+0x130/0x360
[ 9297.147234][T12167]      netlink_unicast+0x449/0x710
[ 9297.147234][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9297.147234][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9297.147234][T12167]      ___sys_sendmsg+0xee/0x170
[ 9297.147234][T12167]      __sys_sendmsg+0xcd/0x170
[ 9297.147234][T12167]      do_syscall_64+0xc6/0x1e0
[ 9297.147234][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9297.147234][T12167] 
[ 9307.062822][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9307.063292][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9307.063292][   T10]      dst_init+0x84/0x4a0
[ 9307.063292][   T10]      dst_alloc+0x97/0x150
[ 9307.063292][   T10]      ip6_dst_alloc+0x23/0x90
[ 9307.063292][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9307.063292][   T10]      ip6_pol_route+0x56f/0x840
[ 9307.063292][   T10]      fib6_rule_lookup+0x334/0x630
[ 9307.063292][   T10]      ip6_route_output_flags+0x259/0x480
[ 9307.063292][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9307.063292][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9307.063292][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9307.063292][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9307.063292][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.063292][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.063292][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.063292][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.063292][   T10] 
[ 9307.065199][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.065199][   T10]      dst_init+0x84/0x4a0
[ 9307.065199][   T10]      dst_alloc+0x97/0x150
[ 9307.065199][   T10]      ip6_dst_alloc+0x23/0x90
[ 9307.065199][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9307.065199][   T10]      ip6_pol_route+0x56f/0x840
[ 9307.065199][   T10]      fib6_rule_lookup+0x334/0x630
[ 9307.065199][   T10]      ip6_route_output_flags+0x259/0x480
[ 9307.065199][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9307.065199][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9307.065199][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9307.065199][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9307.065199][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9307.065199][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.065199][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.065199][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.065199][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.065199][   T10] 
[ 9307.067212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.067212][   T10]      dst_init+0x84/0x4a0
[ 9307.067212][   T10]      dst_alloc+0x97/0x150
[ 9307.067212][   T10]      ip6_dst_alloc+0x23/0x90
[ 9307.067212][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9307.067212][   T10]      ip6_pol_route+0x56f/0x840
[ 9307.067212][   T10]      fib6_rule_lookup+0x334/0x630
[ 9307.067212][   T10]      ip6_route_output_flags+0x259/0x480
[ 9307.067212][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9307.067212][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9307.067212][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9307.067212][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9307.067212][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9307.067212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.067212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.067212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.067212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.067212][   T10] 
[ 9307.069231][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.069231][   T10]      netdev_get_by_index+0x5e/0x80
[ 9307.069231][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9307.069231][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9307.069231][   T10]      ip6_route_add+0x1c/0x140
[ 9307.069231][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9307.069231][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9307.069231][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9307.069231][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.069231][   T10]      netlink_rcv_skb+0x130/0x360
[ 9307.069231][   T10]      netlink_unicast+0x449/0x710
[ 9307.069231][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9307.069231][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.069231][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.069231][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.069231][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.069231][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.069231][   T10] 
[ 9307.071240][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.071240][   T10]      netdev_get_by_index+0x5e/0x80
[ 9307.071240][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9307.071240][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9307.071240][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9307.071240][   T10]      ipv6_add_addr+0x411/0x2000
[ 9307.071240][   T10]      inet6_addr_add+0x30e/0xa40
[ 9307.071240][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9307.071240][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.071240][   T10]      netlink_rcv_skb+0x130/0x360
[ 9307.071240][   T10]      netlink_unicast+0x449/0x710
[ 9307.071240][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9307.071240][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.071240][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.071240][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.071240][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.071240][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.071240][   T10] 
[ 9307.073263][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.073263][   T10]      netdev_get_by_index+0x5e/0x80
[ 9307.073263][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9307.073263][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9307.073263][   T10]      ip6_route_add+0x1c/0x140
[ 9307.073263][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9307.073263][   T10]      addrconf_add_dev+0xe2/0x170
[ 9307.073263][   T10]      inet6_addr_add+0x12f/0xa40
[ 9307.073263][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9307.073263][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.073263][   T10]      netlink_rcv_skb+0x130/0x360
[ 9307.073263][   T10]      netlink_unicast+0x449/0x710
[ 9307.073263][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9307.073263][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.073263][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.073263][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.073263][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.073263][   T10] 
[ 9307.075232][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.075232][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9307.075232][   T10]      ipv6_find_idev+0x102/0x170
[ 9307.075232][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9307.075232][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.075232][   T10]      netlink_rcv_skb+0x130/0x360
[ 9307.075232][   T10]      netlink_unicast+0x449/0x710
[ 9307.075232][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9307.075232][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.075232][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.075232][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.075232][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.075232][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.075232][   T10] 
[ 9307.076778][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9307.076778][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9307.076778][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9307.076778][   T10]      ipv6_find_idev+0x102/0x170
[ 9307.076778][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9307.076778][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.076778][   T10]      netlink_rcv_skb+0x130/0x360
[ 9307.076778][   T10]      netlink_unicast+0x449/0x710
[ 9307.076778][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9307.076778][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.076778][   T10]      ___sys_sendmsg+0xee/0x170
[ 9307.076778][   T10]      __sys_sendmsg+0xcd/0x170
[ 9307.076778][   T10]      do_syscall_64+0xc6/0x1e0
[ 9307.076778][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.076778][   T10] 
[ 9307.390805][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9307.391257][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9307.391257][T12167]      netdev_get_by_index+0x5e/0x80
[ 9307.391257][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9307.391257][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9307.391257][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9307.391257][T12167]      ipv6_add_addr+0x411/0x2000
[ 9307.391257][T12167]      inet6_addr_add+0x30e/0xa40
[ 9307.391257][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9307.391257][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.391257][T12167]      netlink_rcv_skb+0x130/0x360
[ 9307.391257][T12167]      netlink_unicast+0x449/0x710
[ 9307.391257][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9307.391257][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.391257][T12167]      ___sys_sendmsg+0xee/0x170
[ 9307.391257][T12167]      __sys_sendmsg+0xcd/0x170
[ 9307.391257][T12167]      do_syscall_64+0xc6/0x1e0
[ 9307.391257][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.391257][T12167] 
[ 9307.393519][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9307.393519][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9307.393519][T12167]      ipv6_find_idev+0x102/0x170
[ 9307.393519][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9307.393519][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.393519][T12167]      netlink_rcv_skb+0x130/0x360
[ 9307.393519][T12167]      netlink_unicast+0x449/0x710
[ 9307.393519][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9307.393519][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.393519][T12167]      ___sys_sendmsg+0xee/0x170
[ 9307.393519][T12167]      __sys_sendmsg+0xcd/0x170
[ 9307.393519][T12167]      do_syscall_64+0xc6/0x1e0
[ 9307.393519][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.393519][T12167] 
[ 9307.395244][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9307.395244][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9307.395244][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9307.395244][T12167]      ipv6_find_idev+0x102/0x170
[ 9307.395244][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9307.395244][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9307.395244][T12167]      netlink_rcv_skb+0x130/0x360
[ 9307.395244][T12167]      netlink_unicast+0x449/0x710
[ 9307.395244][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9307.395244][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9307.395244][T12167]      ___sys_sendmsg+0xee/0x170
[ 9307.395244][T12167]      __sys_sendmsg+0xcd/0x170
[ 9307.395244][T12167]      do_syscall_64+0xc6/0x1e0
[ 9307.395244][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9307.395244][T12167] 
[ 9317.318880][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9317.319337][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9317.319337][   T10]      dst_init+0x84/0x4a0
[ 9317.319337][   T10]      dst_alloc+0x97/0x150
[ 9317.319337][   T10]      ip6_dst_alloc+0x23/0x90
[ 9317.319337][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9317.319337][   T10]      ip6_pol_route+0x56f/0x840
[ 9317.319337][   T10]      fib6_rule_lookup+0x334/0x630
[ 9317.319337][   T10]      ip6_route_output_flags+0x259/0x480
[ 9317.319337][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9317.319337][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9317.319337][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9317.319337][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9317.319337][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.319337][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.319337][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.319337][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.319337][   T10] 
[ 9317.321250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.321250][   T10]      dst_init+0x84/0x4a0
[ 9317.321250][   T10]      dst_alloc+0x97/0x150
[ 9317.321250][   T10]      ip6_dst_alloc+0x23/0x90
[ 9317.321250][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9317.321250][   T10]      ip6_pol_route+0x56f/0x840
[ 9317.321250][   T10]      fib6_rule_lookup+0x334/0x630
[ 9317.321250][   T10]      ip6_route_output_flags+0x259/0x480
[ 9317.321250][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9317.321250][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9317.321250][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9317.321250][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9317.321250][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9317.321250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.321250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.321250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.321250][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.321250][   T10] 
[ 9317.323259][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.323259][   T10]      dst_init+0x84/0x4a0
[ 9317.323259][   T10]      dst_alloc+0x97/0x150
[ 9317.323259][   T10]      ip6_dst_alloc+0x23/0x90
[ 9317.323259][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9317.323259][   T10]      ip6_pol_route+0x56f/0x840
[ 9317.323259][   T10]      fib6_rule_lookup+0x334/0x630
[ 9317.323259][   T10]      ip6_route_output_flags+0x259/0x480
[ 9317.323259][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9317.323259][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9317.323259][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9317.323259][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9317.323259][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9317.323259][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.323259][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.323259][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.323259][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.323259][   T10] 
[ 9317.325258][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.325258][   T10]      netdev_get_by_index+0x5e/0x80
[ 9317.325258][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9317.325258][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9317.325258][   T10]      ip6_route_add+0x1c/0x140
[ 9317.325258][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9317.325258][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9317.325258][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9317.325258][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.325258][   T10]      netlink_rcv_skb+0x130/0x360
[ 9317.325258][   T10]      netlink_unicast+0x449/0x710
[ 9317.325258][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9317.325258][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.325258][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.325258][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.325258][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.325258][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.325258][   T10] 
[ 9317.327256][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.327256][   T10]      netdev_get_by_index+0x5e/0x80
[ 9317.327256][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9317.327256][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9317.327256][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9317.327256][   T10]      ipv6_add_addr+0x411/0x2000
[ 9317.327256][   T10]      inet6_addr_add+0x30e/0xa40
[ 9317.327256][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9317.327256][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.327256][   T10]      netlink_rcv_skb+0x130/0x360
[ 9317.327256][   T10]      netlink_unicast+0x449/0x710
[ 9317.327256][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9317.327256][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.327256][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.327256][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.327256][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.327256][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.327256][   T10] 
[ 9317.329248][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.329248][   T10]      netdev_get_by_index+0x5e/0x80
[ 9317.329248][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9317.329248][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9317.329248][   T10]      ip6_route_add+0x1c/0x140
[ 9317.329248][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9317.329248][   T10]      addrconf_add_dev+0xe2/0x170
[ 9317.329248][   T10]      inet6_addr_add+0x12f/0xa40
[ 9317.329248][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9317.329248][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.329248][   T10]      netlink_rcv_skb+0x130/0x360
[ 9317.329248][   T10]      netlink_unicast+0x449/0x710
[ 9317.329248][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9317.329248][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.329248][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.329248][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.329248][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.329248][   T10] 
[ 9317.331209][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.331209][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9317.331209][   T10]      ipv6_find_idev+0x102/0x170
[ 9317.331209][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9317.331209][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.331209][   T10]      netlink_rcv_skb+0x130/0x360
[ 9317.331209][   T10]      netlink_unicast+0x449/0x710
[ 9317.331209][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9317.331209][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.331209][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.331209][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.331209][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.331209][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.331209][   T10] 
[ 9317.332755][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9317.332755][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9317.332755][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9317.332755][   T10]      ipv6_find_idev+0x102/0x170
[ 9317.332755][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9317.332755][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.332755][   T10]      netlink_rcv_skb+0x130/0x360
[ 9317.332755][   T10]      netlink_unicast+0x449/0x710
[ 9317.332755][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9317.332755][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.332755][   T10]      ___sys_sendmsg+0xee/0x170
[ 9317.332755][   T10]      __sys_sendmsg+0xcd/0x170
[ 9317.332755][   T10]      do_syscall_64+0xc6/0x1e0
[ 9317.332755][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.332755][   T10] 
[ 9317.646829][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9317.647279][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9317.647279][T12167]      netdev_get_by_index+0x5e/0x80
[ 9317.647279][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9317.647279][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9317.647279][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9317.647279][T12167]      ipv6_add_addr+0x411/0x2000
[ 9317.647279][T12167]      inet6_addr_add+0x30e/0xa40
[ 9317.647279][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9317.647279][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.647279][T12167]      netlink_rcv_skb+0x130/0x360
[ 9317.647279][T12167]      netlink_unicast+0x449/0x710
[ 9317.647279][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9317.647279][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.647279][T12167]      ___sys_sendmsg+0xee/0x170
[ 9317.647279][T12167]      __sys_sendmsg+0xcd/0x170
[ 9317.647279][T12167]      do_syscall_64+0xc6/0x1e0
[ 9317.647279][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.647279][T12167] 
[ 9317.649525][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9317.649525][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9317.649525][T12167]      ipv6_find_idev+0x102/0x170
[ 9317.649525][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9317.649525][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.649525][T12167]      netlink_rcv_skb+0x130/0x360
[ 9317.649525][T12167]      netlink_unicast+0x449/0x710
[ 9317.649525][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9317.649525][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.649525][T12167]      ___sys_sendmsg+0xee/0x170
[ 9317.649525][T12167]      __sys_sendmsg+0xcd/0x170
[ 9317.649525][T12167]      do_syscall_64+0xc6/0x1e0
[ 9317.649525][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.649525][T12167] 
[ 9317.651244][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9317.651244][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9317.651244][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9317.651244][T12167]      ipv6_find_idev+0x102/0x170
[ 9317.651244][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9317.651244][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9317.651244][T12167]      netlink_rcv_skb+0x130/0x360
[ 9317.651244][T12167]      netlink_unicast+0x449/0x710
[ 9317.651244][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9317.651244][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9317.651244][T12167]      ___sys_sendmsg+0xee/0x170
[ 9317.651244][T12167]      __sys_sendmsg+0xcd/0x170
[ 9317.651244][T12167]      do_syscall_64+0xc6/0x1e0
[ 9317.651244][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9317.651244][T12167] 
[ 9327.574852][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9327.575317][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9327.575317][   T10]      dst_init+0x84/0x4a0
[ 9327.575317][   T10]      dst_alloc+0x97/0x150
[ 9327.575317][   T10]      ip6_dst_alloc+0x23/0x90
[ 9327.575317][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9327.575317][   T10]      ip6_pol_route+0x56f/0x840
[ 9327.575317][   T10]      fib6_rule_lookup+0x334/0x630
[ 9327.575317][   T10]      ip6_route_output_flags+0x259/0x480
[ 9327.575317][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9327.575317][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9327.575317][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9327.575317][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9327.575317][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.575317][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.575317][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.575317][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.575317][   T10] 
[ 9327.577295][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.577295][   T10]      dst_init+0x84/0x4a0
[ 9327.577295][   T10]      dst_alloc+0x97/0x150
[ 9327.577295][   T10]      ip6_dst_alloc+0x23/0x90
[ 9327.577295][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9327.577295][   T10]      ip6_pol_route+0x56f/0x840
[ 9327.577295][   T10]      fib6_rule_lookup+0x334/0x630
[ 9327.577295][   T10]      ip6_route_output_flags+0x259/0x480
[ 9327.577295][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9327.577295][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9327.577295][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9327.577295][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9327.577295][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9327.577295][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.577295][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.577295][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.577295][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.577295][   T10] 
[ 9327.579352][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.579352][   T10]      dst_init+0x84/0x4a0
[ 9327.579352][   T10]      dst_alloc+0x97/0x150
[ 9327.579352][   T10]      ip6_dst_alloc+0x23/0x90
[ 9327.579352][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9327.579352][   T10]      ip6_pol_route+0x56f/0x840
[ 9327.579352][   T10]      fib6_rule_lookup+0x334/0x630
[ 9327.579352][   T10]      ip6_route_output_flags+0x259/0x480
[ 9327.579352][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9327.579352][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9327.579352][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9327.579352][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9327.579352][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9327.579352][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.579352][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.579352][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.579352][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.579352][   T10] 
[ 9327.581389][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.581389][   T10]      netdev_get_by_index+0x5e/0x80
[ 9327.581389][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9327.581389][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9327.581389][   T10]      ip6_route_add+0x1c/0x140
[ 9327.581389][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9327.581389][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9327.581389][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9327.581389][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.581389][   T10]      netlink_rcv_skb+0x130/0x360
[ 9327.581389][   T10]      netlink_unicast+0x449/0x710
[ 9327.581389][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9327.581389][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.581389][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.581389][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.581389][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.581389][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.581389][   T10] 
[ 9327.583433][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.583433][   T10]      netdev_get_by_index+0x5e/0x80
[ 9327.583433][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9327.583433][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9327.583433][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9327.583433][   T10]      ipv6_add_addr+0x411/0x2000
[ 9327.583433][   T10]      inet6_addr_add+0x30e/0xa40
[ 9327.583433][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9327.583433][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.583433][   T10]      netlink_rcv_skb+0x130/0x360
[ 9327.583433][   T10]      netlink_unicast+0x449/0x710
[ 9327.583433][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9327.583433][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.583433][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.583433][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.583433][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.583433][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.583433][   T10] 
[ 9327.585479][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.585479][   T10]      netdev_get_by_index+0x5e/0x80
[ 9327.585479][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9327.585479][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9327.585479][   T10]      ip6_route_add+0x1c/0x140
[ 9327.585479][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9327.585479][   T10]      addrconf_add_dev+0xe2/0x170
[ 9327.585479][   T10]      inet6_addr_add+0x12f/0xa40
[ 9327.585479][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9327.585479][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.585479][   T10]      netlink_rcv_skb+0x130/0x360
[ 9327.585479][   T10]      netlink_unicast+0x449/0x710
[ 9327.585479][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9327.585479][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.585479][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.585479][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.585479][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.585479][   T10] 
[ 9327.587483][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.587483][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9327.587483][   T10]      ipv6_find_idev+0x102/0x170
[ 9327.587483][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9327.587483][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.587483][   T10]      netlink_rcv_skb+0x130/0x360
[ 9327.587483][   T10]      netlink_unicast+0x449/0x710
[ 9327.587483][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9327.587483][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.587483][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.587483][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.587483][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.587483][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.587483][   T10] 
[ 9327.589046][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9327.589046][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9327.589046][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9327.589046][   T10]      ipv6_find_idev+0x102/0x170
[ 9327.589046][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9327.589046][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.589046][   T10]      netlink_rcv_skb+0x130/0x360
[ 9327.589046][   T10]      netlink_unicast+0x449/0x710
[ 9327.589046][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9327.589046][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.589046][   T10]      ___sys_sendmsg+0xee/0x170
[ 9327.589046][   T10]      __sys_sendmsg+0xcd/0x170
[ 9327.589046][   T10]      do_syscall_64+0xc6/0x1e0
[ 9327.589046][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.589046][   T10] 
[ 9327.894806][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9327.895238][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9327.895238][T12167]      netdev_get_by_index+0x5e/0x80
[ 9327.895238][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9327.895238][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9327.895238][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9327.895238][T12167]      ipv6_add_addr+0x411/0x2000
[ 9327.895238][T12167]      inet6_addr_add+0x30e/0xa40
[ 9327.895238][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9327.895238][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.895238][T12167]      netlink_rcv_skb+0x130/0x360
[ 9327.895238][T12167]      netlink_unicast+0x449/0x710
[ 9327.895238][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9327.895238][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.895238][T12167]      ___sys_sendmsg+0xee/0x170
[ 9327.895238][T12167]      __sys_sendmsg+0xcd/0x170
[ 9327.895238][T12167]      do_syscall_64+0xc6/0x1e0
[ 9327.895238][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.895238][T12167] 
[ 9327.897525][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9327.897525][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9327.897525][T12167]      ipv6_find_idev+0x102/0x170
[ 9327.897525][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9327.897525][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.897525][T12167]      netlink_rcv_skb+0x130/0x360
[ 9327.897525][T12167]      netlink_unicast+0x449/0x710
[ 9327.897525][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9327.897525][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.897525][T12167]      ___sys_sendmsg+0xee/0x170
[ 9327.897525][T12167]      __sys_sendmsg+0xcd/0x170
[ 9327.897525][T12167]      do_syscall_64+0xc6/0x1e0
[ 9327.897525][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.897525][T12167] 
[ 9327.899278][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9327.899278][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9327.899278][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9327.899278][T12167]      ipv6_find_idev+0x102/0x170
[ 9327.899278][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9327.899278][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9327.899278][T12167]      netlink_rcv_skb+0x130/0x360
[ 9327.899278][T12167]      netlink_unicast+0x449/0x710
[ 9327.899278][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9327.899278][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9327.899278][T12167]      ___sys_sendmsg+0xee/0x170
[ 9327.899278][T12167]      __sys_sendmsg+0xcd/0x170
[ 9327.899278][T12167]      do_syscall_64+0xc6/0x1e0
[ 9327.899278][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9327.899278][T12167] 
[ 9337.830827][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9337.831285][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9337.831285][   T10]      dst_init+0x84/0x4a0
[ 9337.831285][   T10]      dst_alloc+0x97/0x150
[ 9337.831285][   T10]      ip6_dst_alloc+0x23/0x90
[ 9337.831285][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9337.831285][   T10]      ip6_pol_route+0x56f/0x840
[ 9337.831285][   T10]      fib6_rule_lookup+0x334/0x630
[ 9337.831285][   T10]      ip6_route_output_flags+0x259/0x480
[ 9337.831285][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9337.831285][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9337.831285][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9337.831285][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9337.831285][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.831285][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.831285][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.831285][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.831285][   T10] 
[ 9337.833212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.833212][   T10]      dst_init+0x84/0x4a0
[ 9337.833212][   T10]      dst_alloc+0x97/0x150
[ 9337.833212][   T10]      ip6_dst_alloc+0x23/0x90
[ 9337.833212][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9337.833212][   T10]      ip6_pol_route+0x56f/0x840
[ 9337.833212][   T10]      fib6_rule_lookup+0x334/0x630
[ 9337.833212][   T10]      ip6_route_output_flags+0x259/0x480
[ 9337.833212][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9337.833212][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9337.833212][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9337.833212][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9337.833212][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9337.833212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.833212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.833212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.833212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.833212][   T10] 
[ 9337.835206][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.835206][   T10]      dst_init+0x84/0x4a0
[ 9337.835206][   T10]      dst_alloc+0x97/0x150
[ 9337.835206][   T10]      ip6_dst_alloc+0x23/0x90
[ 9337.835206][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9337.835206][   T10]      ip6_pol_route+0x56f/0x840
[ 9337.835206][   T10]      fib6_rule_lookup+0x334/0x630
[ 9337.835206][   T10]      ip6_route_output_flags+0x259/0x480
[ 9337.835206][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9337.835206][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9337.835206][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9337.835206][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9337.835206][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9337.835206][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.835206][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.835206][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.835206][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.835206][   T10] 
[ 9337.837227][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.837227][   T10]      netdev_get_by_index+0x5e/0x80
[ 9337.837227][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9337.837227][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9337.837227][   T10]      ip6_route_add+0x1c/0x140
[ 9337.837227][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9337.837227][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9337.837227][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9337.837227][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9337.837227][   T10]      netlink_rcv_skb+0x130/0x360
[ 9337.837227][   T10]      netlink_unicast+0x449/0x710
[ 9337.837227][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9337.837227][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9337.837227][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.837227][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.837227][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.837227][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.837227][   T10] 
[ 9337.839224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.839224][   T10]      netdev_get_by_index+0x5e/0x80
[ 9337.839224][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9337.839224][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9337.839224][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9337.839224][   T10]      ipv6_add_addr+0x411/0x2000
[ 9337.839224][   T10]      inet6_addr_add+0x30e/0xa40
[ 9337.839224][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9337.839224][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9337.839224][   T10]      netlink_rcv_skb+0x130/0x360
[ 9337.839224][   T10]      netlink_unicast+0x449/0x710
[ 9337.839224][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9337.839224][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9337.839224][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.839224][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.839224][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.839224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.839224][   T10] 
[ 9337.841218][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.841218][   T10]      netdev_get_by_index+0x5e/0x80
[ 9337.841218][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9337.841218][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9337.841218][   T10]      ip6_route_add+0x1c/0x140
[ 9337.841218][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9337.841218][   T10]      addrconf_add_dev+0xe2/0x170
[ 9337.841218][   T10]      inet6_addr_add+0x12f/0xa40
[ 9337.841218][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9337.841218][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9337.841218][   T10]      netlink_rcv_skb+0x130/0x360
[ 9337.841218][   T10]      netlink_unicast+0x449/0x710
[ 9337.841218][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9337.841218][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9337.841218][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.841218][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.841218][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.841218][   T10] 
[ 9337.843190][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.843190][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9337.843190][   T10]      ipv6_find_idev+0x102/0x170
[ 9337.843190][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9337.843190][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9337.843190][   T10]      netlink_rcv_skb+0x130/0x360
[ 9337.843190][   T10]      netlink_unicast+0x449/0x710
[ 9337.843190][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9337.843190][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9337.843190][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.843190][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.843190][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.843190][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.843190][   T10] 
[ 9337.844720][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9337.844720][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9337.844720][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9337.844720][   T10]      ipv6_find_idev+0x102/0x170
[ 9337.844720][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9337.844720][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9337.844720][   T10]      netlink_rcv_skb+0x130/0x360
[ 9337.844720][   T10]      netlink_unicast+0x449/0x710
[ 9337.844720][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9337.844720][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9337.844720][   T10]      ___sys_sendmsg+0xee/0x170
[ 9337.844720][   T10]      __sys_sendmsg+0xcd/0x170
[ 9337.844720][   T10]      do_syscall_64+0xc6/0x1e0
[ 9337.844720][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9337.844720][   T10] 
[ 9338.142799][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9338.143219][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9338.143219][T12167]      netdev_get_by_index+0x5e/0x80
[ 9338.143219][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9338.143219][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9338.143219][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9338.143219][T12167]      ipv6_add_addr+0x411/0x2000
[ 9338.143219][T12167]      inet6_addr_add+0x30e/0xa40
[ 9338.143219][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9338.143219][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9338.143219][T12167]      netlink_rcv_skb+0x130/0x360
[ 9338.143219][T12167]      netlink_unicast+0x449/0x710
[ 9338.143219][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9338.143219][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9338.143219][T12167]      ___sys_sendmsg+0xee/0x170
[ 9338.143219][T12167]      __sys_sendmsg+0xcd/0x170
[ 9338.143219][T12167]      do_syscall_64+0xc6/0x1e0
[ 9338.143219][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9338.143219][T12167] 
[ 9338.145476][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9338.145476][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9338.145476][T12167]      ipv6_find_idev+0x102/0x170
[ 9338.145476][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9338.145476][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9338.145476][T12167]      netlink_rcv_skb+0x130/0x360
[ 9338.145476][T12167]      netlink_unicast+0x449/0x710
[ 9338.145476][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9338.145476][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9338.145476][T12167]      ___sys_sendmsg+0xee/0x170
[ 9338.145476][T12167]      __sys_sendmsg+0xcd/0x170
[ 9338.145476][T12167]      do_syscall_64+0xc6/0x1e0
[ 9338.145476][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9338.145476][T12167] 
[ 9338.147213][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9338.147213][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9338.147213][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9338.147213][T12167]      ipv6_find_idev+0x102/0x170
[ 9338.147213][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9338.147213][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9338.147213][T12167]      netlink_rcv_skb+0x130/0x360
[ 9338.147213][T12167]      netlink_unicast+0x449/0x710
[ 9338.147213][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9338.147213][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9338.147213][T12167]      ___sys_sendmsg+0xee/0x170
[ 9338.147213][T12167]      __sys_sendmsg+0xcd/0x170
[ 9338.147213][T12167]      do_syscall_64+0xc6/0x1e0
[ 9338.147213][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9338.147213][T12167] 
[ 9340.198811][   T42] INFO: task modprobe:12646 blocked for more than 614 seconds.
[ 9340.199096][   T42]       Not tainted 6.8.0-virtme #1
[ 9340.199220][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9340.199418][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9340.199797][   T42] Call Trace:
[ 9340.199895][   T42]  <TASK>
[ 9340.199965][   T42]  __schedule+0x705/0x1ac0
[ 9340.200119][   T42]  ? __pfx___schedule+0x10/0x10
[ 9340.200253][   T42]  ? schedule+0x1a5/0x210
[ 9340.200350][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9340.200481][   T42]  ? mark_lock+0x38/0x3e0
[ 9340.200574][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9340.200715][   T42]  ? schedule+0x1a5/0x210
[ 9340.200814][   T42]  schedule+0xdf/0x210
[ 9340.200913][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9340.201035][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9340.201170][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9340.201323][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9340.201447][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9340.201577][   T42]  ? lock_acquire+0x1c1/0x220
[ 9340.201712][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9340.201849][   T42]  down_write+0x1c9/0x200
[ 9340.201944][   T42]  ? __pfx_down_write+0x10/0x10
[ 9340.202069][   T42]  ? __pfx__printk+0x10/0x10
[ 9340.202196][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9340.202325][   T42]  register_pernet_subsys+0x1a/0x50
[ 9340.202447][   T42]  tcf_register_action+0xa3/0x600
[ 9340.202575][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9340.202746][   T42]  do_one_initcall+0xc8/0x3f0
[ 9340.202874][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9340.202999][   T42]  ? __create_object+0x5e/0xb0
[ 9340.203132][   T42]  ? kasan_unpoison+0x27/0x60
[ 9340.203262][   T42]  do_init_module+0x233/0x740
[ 9340.203400][   T42]  load_module+0x16b5/0x2350
[ 9340.203539][   T42]  ? __pfx_load_module+0x10/0x10
[ 9340.203662][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9340.203800][   T42]  ? kernel_read_file+0x300/0x520
[ 9340.203931][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9340.204061][   T42]  ? init_module_from_file+0xd2/0x130
[ 9340.204186][   T42]  init_module_from_file+0xd2/0x130
[ 9340.204314][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9340.204468][   T42]  ? __lock_release+0x103/0x460
[ 9340.204590][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9340.204733][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9340.204856][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9340.204985][   T42]  idempotent_init_module+0x342/0x620
[ 9340.205112][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9340.205300][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9340.205426][   T42]  do_syscall_64+0xc6/0x1e0
[ 9340.205551][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9340.205715][   T42] RIP: 0033:0x7fac120f1e5d
[ 9340.205847][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9340.206030][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9340.206213][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9340.206399][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9340.206583][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9340.206771][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9340.206966][   T42]  </TASK>
[ 9340.207062][   T42] 
[ 9340.207062][   T42] Showing all locks held in the system:
[ 9340.207243][   T42] 3 locks held by kworker/u16:0/10:
[ 9340.207364][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9340.207614][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9340.207840][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9340.208058][   T42] 1 lock held by khungtaskd/42:
[ 9340.208186][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9340.208403][   T42] 2 locks held by kworker/u17:1/44:
[ 9340.208520][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9340.208770][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9340.209056][   T42] 1 lock held by modprobe/12646:
[ 9340.209174][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9340.209422][   T42] 
[ 9340.209483][   T42] =============================================
[ 9340.209483][   T42] 
[ 9348.095223][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9348.095676][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9348.095676][   T10]      dst_init+0x84/0x4a0
[ 9348.095676][   T10]      dst_alloc+0x97/0x150
[ 9348.095676][   T10]      ip6_dst_alloc+0x23/0x90
[ 9348.095676][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9348.095676][   T10]      ip6_pol_route+0x56f/0x840
[ 9348.095676][   T10]      fib6_rule_lookup+0x334/0x630
[ 9348.095676][   T10]      ip6_route_output_flags+0x259/0x480
[ 9348.095676][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9348.095676][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9348.095676][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9348.095676][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9348.095676][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.095676][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.095676][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.095676][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.095676][   T10] 
[ 9348.097588][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.097588][   T10]      dst_init+0x84/0x4a0
[ 9348.097588][   T10]      dst_alloc+0x97/0x150
[ 9348.097588][   T10]      ip6_dst_alloc+0x23/0x90
[ 9348.097588][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9348.097588][   T10]      ip6_pol_route+0x56f/0x840
[ 9348.097588][   T10]      fib6_rule_lookup+0x334/0x630
[ 9348.097588][   T10]      ip6_route_output_flags+0x259/0x480
[ 9348.097588][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9348.097588][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9348.097588][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9348.097588][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9348.097588][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9348.097588][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.097588][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.097588][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.097588][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.097588][   T10] 
[ 9348.099590][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.099590][   T10]      dst_init+0x84/0x4a0
[ 9348.099590][   T10]      dst_alloc+0x97/0x150
[ 9348.099590][   T10]      ip6_dst_alloc+0x23/0x90
[ 9348.099590][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9348.099590][   T10]      ip6_pol_route+0x56f/0x840
[ 9348.099590][   T10]      fib6_rule_lookup+0x334/0x630
[ 9348.099590][   T10]      ip6_route_output_flags+0x259/0x480
[ 9348.099590][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9348.099590][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9348.099590][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9348.099590][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9348.099590][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9348.099590][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.099590][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.099590][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.099590][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.099590][   T10] 
[ 9348.101597][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.101597][   T10]      netdev_get_by_index+0x5e/0x80
[ 9348.101597][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9348.101597][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9348.101597][   T10]      ip6_route_add+0x1c/0x140
[ 9348.101597][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9348.101597][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9348.101597][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9348.101597][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.101597][   T10]      netlink_rcv_skb+0x130/0x360
[ 9348.101597][   T10]      netlink_unicast+0x449/0x710
[ 9348.101597][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9348.101597][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.101597][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.101597][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.101597][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.101597][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.101597][   T10] 
[ 9348.103618][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.103618][   T10]      netdev_get_by_index+0x5e/0x80
[ 9348.103618][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9348.103618][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9348.103618][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9348.103618][   T10]      ipv6_add_addr+0x411/0x2000
[ 9348.103618][   T10]      inet6_addr_add+0x30e/0xa40
[ 9348.103618][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9348.103618][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.103618][   T10]      netlink_rcv_skb+0x130/0x360
[ 9348.103618][   T10]      netlink_unicast+0x449/0x710
[ 9348.103618][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9348.103618][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.103618][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.103618][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.103618][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.103618][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.103618][   T10] 
[ 9348.105621][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.105621][   T10]      netdev_get_by_index+0x5e/0x80
[ 9348.105621][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9348.105621][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9348.105621][   T10]      ip6_route_add+0x1c/0x140
[ 9348.105621][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9348.105621][   T10]      addrconf_add_dev+0xe2/0x170
[ 9348.105621][   T10]      inet6_addr_add+0x12f/0xa40
[ 9348.105621][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9348.105621][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.105621][   T10]      netlink_rcv_skb+0x130/0x360
[ 9348.105621][   T10]      netlink_unicast+0x449/0x710
[ 9348.105621][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9348.105621][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.105621][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.105621][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.105621][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.105621][   T10] 
[ 9348.107600][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.107600][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9348.107600][   T10]      ipv6_find_idev+0x102/0x170
[ 9348.107600][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9348.107600][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.107600][   T10]      netlink_rcv_skb+0x130/0x360
[ 9348.107600][   T10]      netlink_unicast+0x449/0x710
[ 9348.107600][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9348.107600][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.107600][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.107600][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.107600][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.107600][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.107600][   T10] 
[ 9348.109141][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9348.109141][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9348.109141][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9348.109141][   T10]      ipv6_find_idev+0x102/0x170
[ 9348.109141][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9348.109141][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.109141][   T10]      netlink_rcv_skb+0x130/0x360
[ 9348.109141][   T10]      netlink_unicast+0x449/0x710
[ 9348.109141][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9348.109141][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.109141][   T10]      ___sys_sendmsg+0xee/0x170
[ 9348.109141][   T10]      __sys_sendmsg+0xcd/0x170
[ 9348.109141][   T10]      do_syscall_64+0xc6/0x1e0
[ 9348.109141][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.109141][   T10] 
[ 9348.390807][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9348.391236][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9348.391236][T12167]      netdev_get_by_index+0x5e/0x80
[ 9348.391236][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9348.391236][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9348.391236][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9348.391236][T12167]      ipv6_add_addr+0x411/0x2000
[ 9348.391236][T12167]      inet6_addr_add+0x30e/0xa40
[ 9348.391236][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9348.391236][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.391236][T12167]      netlink_rcv_skb+0x130/0x360
[ 9348.391236][T12167]      netlink_unicast+0x449/0x710
[ 9348.391236][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9348.391236][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.391236][T12167]      ___sys_sendmsg+0xee/0x170
[ 9348.391236][T12167]      __sys_sendmsg+0xcd/0x170
[ 9348.391236][T12167]      do_syscall_64+0xc6/0x1e0
[ 9348.391236][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.391236][T12167] 
[ 9348.393487][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9348.393487][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9348.393487][T12167]      ipv6_find_idev+0x102/0x170
[ 9348.393487][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9348.393487][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.393487][T12167]      netlink_rcv_skb+0x130/0x360
[ 9348.393487][T12167]      netlink_unicast+0x449/0x710
[ 9348.393487][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9348.393487][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.393487][T12167]      ___sys_sendmsg+0xee/0x170
[ 9348.393487][T12167]      __sys_sendmsg+0xcd/0x170
[ 9348.393487][T12167]      do_syscall_64+0xc6/0x1e0
[ 9348.393487][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.393487][T12167] 
[ 9348.395211][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9348.395211][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9348.395211][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9348.395211][T12167]      ipv6_find_idev+0x102/0x170
[ 9348.395211][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9348.395211][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9348.395211][T12167]      netlink_rcv_skb+0x130/0x360
[ 9348.395211][T12167]      netlink_unicast+0x449/0x710
[ 9348.395211][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9348.395211][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9348.395211][T12167]      ___sys_sendmsg+0xee/0x170
[ 9348.395211][T12167]      __sys_sendmsg+0xcd/0x170
[ 9348.395211][T12167]      do_syscall_64+0xc6/0x1e0
[ 9348.395211][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9348.395211][T12167] 
[ 9358.350872][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9358.351343][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9358.351343][   T10]      dst_init+0x84/0x4a0
[ 9358.351343][   T10]      dst_alloc+0x97/0x150
[ 9358.351343][   T10]      ip6_dst_alloc+0x23/0x90
[ 9358.351343][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9358.351343][   T10]      ip6_pol_route+0x56f/0x840
[ 9358.351343][   T10]      fib6_rule_lookup+0x334/0x630
[ 9358.351343][   T10]      ip6_route_output_flags+0x259/0x480
[ 9358.351343][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9358.351343][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9358.351343][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9358.351343][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9358.351343][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.351343][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.351343][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.351343][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.351343][   T10] 
[ 9358.353257][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.353257][   T10]      dst_init+0x84/0x4a0
[ 9358.353257][   T10]      dst_alloc+0x97/0x150
[ 9358.353257][   T10]      ip6_dst_alloc+0x23/0x90
[ 9358.353257][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9358.353257][   T10]      ip6_pol_route+0x56f/0x840
[ 9358.353257][   T10]      fib6_rule_lookup+0x334/0x630
[ 9358.353257][   T10]      ip6_route_output_flags+0x259/0x480
[ 9358.353257][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9358.353257][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9358.353257][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9358.353257][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9358.353257][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9358.353257][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.353257][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.353257][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.353257][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.353257][   T10] 
[ 9358.355262][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.355262][   T10]      dst_init+0x84/0x4a0
[ 9358.355262][   T10]      dst_alloc+0x97/0x150
[ 9358.355262][   T10]      ip6_dst_alloc+0x23/0x90
[ 9358.355262][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9358.355262][   T10]      ip6_pol_route+0x56f/0x840
[ 9358.355262][   T10]      fib6_rule_lookup+0x334/0x630
[ 9358.355262][   T10]      ip6_route_output_flags+0x259/0x480
[ 9358.355262][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9358.355262][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9358.355262][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9358.355262][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9358.355262][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9358.355262][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.355262][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.355262][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.355262][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.355262][   T10] 
[ 9358.357299][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.357299][   T10]      netdev_get_by_index+0x5e/0x80
[ 9358.357299][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9358.357299][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9358.357299][   T10]      ip6_route_add+0x1c/0x140
[ 9358.357299][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9358.357299][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9358.357299][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9358.357299][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.357299][   T10]      netlink_rcv_skb+0x130/0x360
[ 9358.357299][   T10]      netlink_unicast+0x449/0x710
[ 9358.357299][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9358.357299][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.357299][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.357299][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.357299][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.357299][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.357299][   T10] 
[ 9358.359315][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.359315][   T10]      netdev_get_by_index+0x5e/0x80
[ 9358.359315][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9358.359315][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9358.359315][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9358.359315][   T10]      ipv6_add_addr+0x411/0x2000
[ 9358.359315][   T10]      inet6_addr_add+0x30e/0xa40
[ 9358.359315][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9358.359315][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.359315][   T10]      netlink_rcv_skb+0x130/0x360
[ 9358.359315][   T10]      netlink_unicast+0x449/0x710
[ 9358.359315][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9358.359315][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.359315][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.359315][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.359315][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.359315][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.359315][   T10] 
[ 9358.361324][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.361324][   T10]      netdev_get_by_index+0x5e/0x80
[ 9358.361324][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9358.361324][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9358.361324][   T10]      ip6_route_add+0x1c/0x140
[ 9358.361324][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9358.361324][   T10]      addrconf_add_dev+0xe2/0x170
[ 9358.361324][   T10]      inet6_addr_add+0x12f/0xa40
[ 9358.361324][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9358.361324][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.361324][   T10]      netlink_rcv_skb+0x130/0x360
[ 9358.361324][   T10]      netlink_unicast+0x449/0x710
[ 9358.361324][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9358.361324][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.361324][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.361324][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.361324][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.361324][   T10] 
[ 9358.363316][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.363316][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9358.363316][   T10]      ipv6_find_idev+0x102/0x170
[ 9358.363316][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9358.363316][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.363316][   T10]      netlink_rcv_skb+0x130/0x360
[ 9358.363316][   T10]      netlink_unicast+0x449/0x710
[ 9358.363316][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9358.363316][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.363316][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.363316][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.363316][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.363316][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.363316][   T10] 
[ 9358.364867][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9358.364867][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9358.364867][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9358.364867][   T10]      ipv6_find_idev+0x102/0x170
[ 9358.364867][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9358.364867][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.364867][   T10]      netlink_rcv_skb+0x130/0x360
[ 9358.364867][   T10]      netlink_unicast+0x449/0x710
[ 9358.364867][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9358.364867][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.364867][   T10]      ___sys_sendmsg+0xee/0x170
[ 9358.364867][   T10]      __sys_sendmsg+0xcd/0x170
[ 9358.364867][   T10]      do_syscall_64+0xc6/0x1e0
[ 9358.364867][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.364867][   T10] 
[ 9358.406825][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9358.407242][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9358.407242][T12167]      netdev_get_by_index+0x5e/0x80
[ 9358.407242][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9358.407242][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9358.407242][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9358.407242][T12167]      ipv6_add_addr+0x411/0x2000
[ 9358.407242][T12167]      inet6_addr_add+0x30e/0xa40
[ 9358.407242][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9358.407242][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.407242][T12167]      netlink_rcv_skb+0x130/0x360
[ 9358.407242][T12167]      netlink_unicast+0x449/0x710
[ 9358.407242][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9358.407242][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.407242][T12167]      ___sys_sendmsg+0xee/0x170
[ 9358.407242][T12167]      __sys_sendmsg+0xcd/0x170
[ 9358.407242][T12167]      do_syscall_64+0xc6/0x1e0
[ 9358.407242][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.407242][T12167] 
[ 9358.409501][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9358.409501][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9358.409501][T12167]      ipv6_find_idev+0x102/0x170
[ 9358.409501][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9358.409501][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.409501][T12167]      netlink_rcv_skb+0x130/0x360
[ 9358.409501][T12167]      netlink_unicast+0x449/0x710
[ 9358.409501][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9358.409501][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.409501][T12167]      ___sys_sendmsg+0xee/0x170
[ 9358.409501][T12167]      __sys_sendmsg+0xcd/0x170
[ 9358.409501][T12167]      do_syscall_64+0xc6/0x1e0
[ 9358.409501][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.409501][T12167] 
[ 9358.411230][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9358.411230][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9358.411230][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9358.411230][T12167]      ipv6_find_idev+0x102/0x170
[ 9358.411230][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9358.411230][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9358.411230][T12167]      netlink_rcv_skb+0x130/0x360
[ 9358.411230][T12167]      netlink_unicast+0x449/0x710
[ 9358.411230][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9358.411230][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9358.411230][T12167]      ___sys_sendmsg+0xee/0x170
[ 9358.411230][T12167]      __sys_sendmsg+0xcd/0x170
[ 9358.411230][T12167]      do_syscall_64+0xc6/0x1e0
[ 9358.411230][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9358.411230][T12167] 
[ 9368.398881][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9368.399356][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9368.399356][   T10]      dst_init+0x84/0x4a0
[ 9368.399356][   T10]      dst_alloc+0x97/0x150
[ 9368.399356][   T10]      ip6_dst_alloc+0x23/0x90
[ 9368.399356][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9368.399356][   T10]      ip6_pol_route+0x56f/0x840
[ 9368.399356][   T10]      fib6_rule_lookup+0x334/0x630
[ 9368.399356][   T10]      ip6_route_output_flags+0x259/0x480
[ 9368.399356][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9368.399356][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9368.399356][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9368.399356][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9368.399356][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.399356][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.399356][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.399356][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.399356][   T10] 
[ 9368.401287][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.401287][   T10]      dst_init+0x84/0x4a0
[ 9368.401287][   T10]      dst_alloc+0x97/0x150
[ 9368.401287][   T10]      ip6_dst_alloc+0x23/0x90
[ 9368.401287][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9368.401287][   T10]      ip6_pol_route+0x56f/0x840
[ 9368.401287][   T10]      fib6_rule_lookup+0x334/0x630
[ 9368.401287][   T10]      ip6_route_output_flags+0x259/0x480
[ 9368.401287][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9368.401287][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9368.401287][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9368.401287][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9368.401287][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9368.401287][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.401287][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.401287][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.401287][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.401287][   T10] 
[ 9368.403304][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.403304][   T10]      dst_init+0x84/0x4a0
[ 9368.403304][   T10]      dst_alloc+0x97/0x150
[ 9368.403304][   T10]      ip6_dst_alloc+0x23/0x90
[ 9368.403304][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9368.403304][   T10]      ip6_pol_route+0x56f/0x840
[ 9368.403304][   T10]      fib6_rule_lookup+0x334/0x630
[ 9368.403304][   T10]      ip6_route_output_flags+0x259/0x480
[ 9368.403304][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9368.403304][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9368.403304][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9368.403304][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9368.403304][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9368.403304][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.403304][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.403304][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.403304][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.403304][   T10] 
[ 9368.405322][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.405322][   T10]      netdev_get_by_index+0x5e/0x80
[ 9368.405322][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9368.405322][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9368.405322][   T10]      ip6_route_add+0x1c/0x140
[ 9368.405322][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9368.405322][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9368.405322][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9368.405322][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.405322][   T10]      netlink_rcv_skb+0x130/0x360
[ 9368.405322][   T10]      netlink_unicast+0x449/0x710
[ 9368.405322][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9368.405322][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.405322][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.405322][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.405322][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.405322][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.405322][   T10] 
[ 9368.407319][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.407319][   T10]      netdev_get_by_index+0x5e/0x80
[ 9368.407319][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9368.407319][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9368.407319][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9368.407319][   T10]      ipv6_add_addr+0x411/0x2000
[ 9368.407319][   T10]      inet6_addr_add+0x30e/0xa40
[ 9368.407319][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9368.407319][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.407319][   T10]      netlink_rcv_skb+0x130/0x360
[ 9368.407319][   T10]      netlink_unicast+0x449/0x710
[ 9368.407319][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9368.407319][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.407319][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.407319][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.407319][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.407319][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.407319][   T10] 
[ 9368.409325][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.409325][   T10]      netdev_get_by_index+0x5e/0x80
[ 9368.409325][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9368.409325][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9368.409325][   T10]      ip6_route_add+0x1c/0x140
[ 9368.409325][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9368.409325][   T10]      addrconf_add_dev+0xe2/0x170
[ 9368.409325][   T10]      inet6_addr_add+0x12f/0xa40
[ 9368.409325][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9368.409325][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.409325][   T10]      netlink_rcv_skb+0x130/0x360
[ 9368.409325][   T10]      netlink_unicast+0x449/0x710
[ 9368.409325][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9368.409325][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.409325][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.409325][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.409325][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.409325][   T10] 
[ 9368.411293][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.411293][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9368.411293][   T10]      ipv6_find_idev+0x102/0x170
[ 9368.411293][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9368.411293][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.411293][   T10]      netlink_rcv_skb+0x130/0x360
[ 9368.411293][   T10]      netlink_unicast+0x449/0x710
[ 9368.411293][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9368.411293][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.411293][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.411293][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.411293][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.411293][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.411293][   T10] 
[ 9368.412841][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9368.412841][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9368.412841][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9368.412841][   T10]      ipv6_find_idev+0x102/0x170
[ 9368.412841][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9368.412841][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.412841][   T10]      netlink_rcv_skb+0x130/0x360
[ 9368.412841][   T10]      netlink_unicast+0x449/0x710
[ 9368.412841][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9368.412841][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.412841][   T10]      ___sys_sendmsg+0xee/0x170
[ 9368.412841][   T10]      __sys_sendmsg+0xcd/0x170
[ 9368.412841][   T10]      do_syscall_64+0xc6/0x1e0
[ 9368.412841][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.412841][   T10] 
[ 9368.654796][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9368.655507][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9368.655507][T12167]      netdev_get_by_index+0x5e/0x80
[ 9368.655507][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9368.655507][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9368.655507][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9368.655507][T12167]      ipv6_add_addr+0x411/0x2000
[ 9368.655507][T12167]      inet6_addr_add+0x30e/0xa40
[ 9368.655507][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9368.655507][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.655507][T12167]      netlink_rcv_skb+0x130/0x360
[ 9368.655507][T12167]      netlink_unicast+0x449/0x710
[ 9368.655507][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9368.655507][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.655507][T12167]      ___sys_sendmsg+0xee/0x170
[ 9368.655507][T12167]      __sys_sendmsg+0xcd/0x170
[ 9368.655507][T12167]      do_syscall_64+0xc6/0x1e0
[ 9368.655507][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.655507][T12167] 
[ 9368.659452][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9368.659452][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9368.659452][T12167]      ipv6_find_idev+0x102/0x170
[ 9368.659452][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9368.659452][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.659452][T12167]      netlink_rcv_skb+0x130/0x360
[ 9368.659452][T12167]      netlink_unicast+0x449/0x710
[ 9368.659452][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9368.659452][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.659452][T12167]      ___sys_sendmsg+0xee/0x170
[ 9368.659452][T12167]      __sys_sendmsg+0xcd/0x170
[ 9368.659452][T12167]      do_syscall_64+0xc6/0x1e0
[ 9368.659452][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.659452][T12167] 
[ 9368.662493][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9368.662493][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9368.662493][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9368.662493][T12167]      ipv6_find_idev+0x102/0x170
[ 9368.662493][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9368.662493][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9368.662493][T12167]      netlink_rcv_skb+0x130/0x360
[ 9368.662493][T12167]      netlink_unicast+0x449/0x710
[ 9368.662493][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9368.662493][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9368.662493][T12167]      ___sys_sendmsg+0xee/0x170
[ 9368.662493][T12167]      __sys_sendmsg+0xcd/0x170
[ 9368.662493][T12167]      do_syscall_64+0xc6/0x1e0
[ 9368.662493][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9368.662493][T12167] 
[ 9378.606841][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9378.607373][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9378.607373][   T10]      dst_init+0x84/0x4a0
[ 9378.607373][   T10]      dst_alloc+0x97/0x150
[ 9378.607373][   T10]      ip6_dst_alloc+0x23/0x90
[ 9378.607373][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9378.607373][   T10]      ip6_pol_route+0x56f/0x840
[ 9378.607373][   T10]      fib6_rule_lookup+0x334/0x630
[ 9378.607373][   T10]      ip6_route_output_flags+0x259/0x480
[ 9378.607373][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9378.607373][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9378.607373][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9378.607373][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9378.607373][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.607373][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.607373][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.607373][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.607373][   T10] 
[ 9378.609494][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.609494][   T10]      dst_init+0x84/0x4a0
[ 9378.609494][   T10]      dst_alloc+0x97/0x150
[ 9378.609494][   T10]      ip6_dst_alloc+0x23/0x90
[ 9378.609494][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9378.609494][   T10]      ip6_pol_route+0x56f/0x840
[ 9378.609494][   T10]      fib6_rule_lookup+0x334/0x630
[ 9378.609494][   T10]      ip6_route_output_flags+0x259/0x480
[ 9378.609494][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9378.609494][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9378.609494][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9378.609494][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9378.609494][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9378.609494][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.609494][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.609494][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.609494][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.609494][   T10] 
[ 9378.611755][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.611755][   T10]      dst_init+0x84/0x4a0
[ 9378.611755][   T10]      dst_alloc+0x97/0x150
[ 9378.611755][   T10]      ip6_dst_alloc+0x23/0x90
[ 9378.611755][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9378.611755][   T10]      ip6_pol_route+0x56f/0x840
[ 9378.611755][   T10]      fib6_rule_lookup+0x334/0x630
[ 9378.611755][   T10]      ip6_route_output_flags+0x259/0x480
[ 9378.611755][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9378.611755][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9378.611755][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9378.611755][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9378.611755][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9378.611755][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.611755][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.611755][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.611755][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.611755][   T10] 
[ 9378.613999][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.613999][   T10]      netdev_get_by_index+0x5e/0x80
[ 9378.613999][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9378.613999][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9378.613999][   T10]      ip6_route_add+0x1c/0x140
[ 9378.613999][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9378.613999][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9378.613999][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9378.613999][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.613999][   T10]      netlink_rcv_skb+0x130/0x360
[ 9378.613999][   T10]      netlink_unicast+0x449/0x710
[ 9378.613999][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9378.613999][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.613999][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.613999][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.613999][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.613999][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.613999][   T10] 
[ 9378.616241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.616241][   T10]      netdev_get_by_index+0x5e/0x80
[ 9378.616241][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9378.616241][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9378.616241][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9378.616241][   T10]      ipv6_add_addr+0x411/0x2000
[ 9378.616241][   T10]      inet6_addr_add+0x30e/0xa40
[ 9378.616241][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9378.616241][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.616241][   T10]      netlink_rcv_skb+0x130/0x360
[ 9378.616241][   T10]      netlink_unicast+0x449/0x710
[ 9378.616241][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9378.616241][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.616241][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.616241][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.616241][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.616241][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.616241][   T10] 
[ 9378.618472][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.618472][   T10]      netdev_get_by_index+0x5e/0x80
[ 9378.618472][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9378.618472][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9378.618472][   T10]      ip6_route_add+0x1c/0x140
[ 9378.618472][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9378.618472][   T10]      addrconf_add_dev+0xe2/0x170
[ 9378.618472][   T10]      inet6_addr_add+0x12f/0xa40
[ 9378.618472][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9378.618472][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.618472][   T10]      netlink_rcv_skb+0x130/0x360
[ 9378.618472][   T10]      netlink_unicast+0x449/0x710
[ 9378.618472][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9378.618472][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.618472][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.618472][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.618472][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.618472][   T10] 
[ 9378.620694][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.620694][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9378.620694][   T10]      ipv6_find_idev+0x102/0x170
[ 9378.620694][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9378.620694][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.620694][   T10]      netlink_rcv_skb+0x130/0x360
[ 9378.620694][   T10]      netlink_unicast+0x449/0x710
[ 9378.620694][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9378.620694][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.620694][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.620694][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.620694][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.620694][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.620694][   T10] 
[ 9378.622414][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9378.622414][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9378.622414][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9378.622414][   T10]      ipv6_find_idev+0x102/0x170
[ 9378.622414][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9378.622414][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.622414][   T10]      netlink_rcv_skb+0x130/0x360
[ 9378.622414][   T10]      netlink_unicast+0x449/0x710
[ 9378.622414][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9378.622414][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.622414][   T10]      ___sys_sendmsg+0xee/0x170
[ 9378.622414][   T10]      __sys_sendmsg+0xcd/0x170
[ 9378.622414][   T10]      do_syscall_64+0xc6/0x1e0
[ 9378.622414][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.622414][   T10] 
[ 9378.862821][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9378.863338][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9378.863338][T12167]      netdev_get_by_index+0x5e/0x80
[ 9378.863338][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9378.863338][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9378.863338][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9378.863338][T12167]      ipv6_add_addr+0x411/0x2000
[ 9378.863338][T12167]      inet6_addr_add+0x30e/0xa40
[ 9378.863338][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9378.863338][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.863338][T12167]      netlink_rcv_skb+0x130/0x360
[ 9378.863338][T12167]      netlink_unicast+0x449/0x710
[ 9378.863338][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9378.863338][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.863338][T12167]      ___sys_sendmsg+0xee/0x170
[ 9378.863338][T12167]      __sys_sendmsg+0xcd/0x170
[ 9378.863338][T12167]      do_syscall_64+0xc6/0x1e0
[ 9378.863338][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.863338][T12167] 
[ 9378.865662][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9378.865662][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9378.865662][T12167]      ipv6_find_idev+0x102/0x170
[ 9378.865662][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9378.865662][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.865662][T12167]      netlink_rcv_skb+0x130/0x360
[ 9378.865662][T12167]      netlink_unicast+0x449/0x710
[ 9378.865662][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9378.865662][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.865662][T12167]      ___sys_sendmsg+0xee/0x170
[ 9378.865662][T12167]      __sys_sendmsg+0xcd/0x170
[ 9378.865662][T12167]      do_syscall_64+0xc6/0x1e0
[ 9378.865662][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.865662][T12167] 
[ 9378.867578][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9378.867578][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9378.867578][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9378.867578][T12167]      ipv6_find_idev+0x102/0x170
[ 9378.867578][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9378.867578][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9378.867578][T12167]      netlink_rcv_skb+0x130/0x360
[ 9378.867578][T12167]      netlink_unicast+0x449/0x710
[ 9378.867578][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9378.867578][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9378.867578][T12167]      ___sys_sendmsg+0xee/0x170
[ 9378.867578][T12167]      __sys_sendmsg+0xcd/0x170
[ 9378.867578][T12167]      do_syscall_64+0xc6/0x1e0
[ 9378.867578][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9378.867578][T12167] 
[ 9388.870811][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9388.871289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9388.871289][   T10]      dst_init+0x84/0x4a0
[ 9388.871289][   T10]      dst_alloc+0x97/0x150
[ 9388.871289][   T10]      ip6_dst_alloc+0x23/0x90
[ 9388.871289][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9388.871289][   T10]      ip6_pol_route+0x56f/0x840
[ 9388.871289][   T10]      fib6_rule_lookup+0x334/0x630
[ 9388.871289][   T10]      ip6_route_output_flags+0x259/0x480
[ 9388.871289][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9388.871289][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9388.871289][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9388.871289][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9388.871289][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.871289][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.871289][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.871289][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.871289][   T10] 
[ 9388.873228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.873228][   T10]      dst_init+0x84/0x4a0
[ 9388.873228][   T10]      dst_alloc+0x97/0x150
[ 9388.873228][   T10]      ip6_dst_alloc+0x23/0x90
[ 9388.873228][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9388.873228][   T10]      ip6_pol_route+0x56f/0x840
[ 9388.873228][   T10]      fib6_rule_lookup+0x334/0x630
[ 9388.873228][   T10]      ip6_route_output_flags+0x259/0x480
[ 9388.873228][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9388.873228][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9388.873228][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9388.873228][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9388.873228][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9388.873228][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.873228][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.873228][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.873228][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.873228][   T10] 
[ 9388.875249][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.875249][   T10]      dst_init+0x84/0x4a0
[ 9388.875249][   T10]      dst_alloc+0x97/0x150
[ 9388.875249][   T10]      ip6_dst_alloc+0x23/0x90
[ 9388.875249][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9388.875249][   T10]      ip6_pol_route+0x56f/0x840
[ 9388.875249][   T10]      fib6_rule_lookup+0x334/0x630
[ 9388.875249][   T10]      ip6_route_output_flags+0x259/0x480
[ 9388.875249][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9388.875249][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9388.875249][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9388.875249][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9388.875249][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9388.875249][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.875249][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.875249][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.875249][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.875249][   T10] 
[ 9388.877387][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.877387][   T10]      netdev_get_by_index+0x5e/0x80
[ 9388.877387][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9388.877387][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9388.877387][   T10]      ip6_route_add+0x1c/0x140
[ 9388.877387][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9388.877387][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9388.877387][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9388.877387][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9388.877387][   T10]      netlink_rcv_skb+0x130/0x360
[ 9388.877387][   T10]      netlink_unicast+0x449/0x710
[ 9388.877387][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9388.877387][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9388.877387][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.877387][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.877387][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.877387][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.877387][   T10] 
[ 9388.879410][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.879410][   T10]      netdev_get_by_index+0x5e/0x80
[ 9388.879410][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9388.879410][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9388.879410][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9388.879410][   T10]      ipv6_add_addr+0x411/0x2000
[ 9388.879410][   T10]      inet6_addr_add+0x30e/0xa40
[ 9388.879410][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9388.879410][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9388.879410][   T10]      netlink_rcv_skb+0x130/0x360
[ 9388.879410][   T10]      netlink_unicast+0x449/0x710
[ 9388.879410][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9388.879410][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9388.879410][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.879410][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.879410][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.879410][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.879410][   T10] 
[ 9388.881422][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.881422][   T10]      netdev_get_by_index+0x5e/0x80
[ 9388.881422][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9388.881422][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9388.881422][   T10]      ip6_route_add+0x1c/0x140
[ 9388.881422][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9388.881422][   T10]      addrconf_add_dev+0xe2/0x170
[ 9388.881422][   T10]      inet6_addr_add+0x12f/0xa40
[ 9388.881422][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9388.881422][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9388.881422][   T10]      netlink_rcv_skb+0x130/0x360
[ 9388.881422][   T10]      netlink_unicast+0x449/0x710
[ 9388.881422][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9388.881422][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9388.881422][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.881422][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.881422][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.881422][   T10] 
[ 9388.883432][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.883432][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9388.883432][   T10]      ipv6_find_idev+0x102/0x170
[ 9388.883432][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9388.883432][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9388.883432][   T10]      netlink_rcv_skb+0x130/0x360
[ 9388.883432][   T10]      netlink_unicast+0x449/0x710
[ 9388.883432][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9388.883432][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9388.883432][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.883432][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.883432][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.883432][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.883432][   T10] 
[ 9388.884988][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9388.884988][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9388.884988][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9388.884988][   T10]      ipv6_find_idev+0x102/0x170
[ 9388.884988][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9388.884988][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9388.884988][   T10]      netlink_rcv_skb+0x130/0x360
[ 9388.884988][   T10]      netlink_unicast+0x449/0x710
[ 9388.884988][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9388.884988][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9388.884988][   T10]      ___sys_sendmsg+0xee/0x170
[ 9388.884988][   T10]      __sys_sendmsg+0xcd/0x170
[ 9388.884988][   T10]      do_syscall_64+0xc6/0x1e0
[ 9388.884988][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9388.884988][   T10] 
[ 9389.110888][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9389.111379][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9389.111379][T12167]      netdev_get_by_index+0x5e/0x80
[ 9389.111379][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9389.111379][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9389.111379][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9389.111379][T12167]      ipv6_add_addr+0x411/0x2000
[ 9389.111379][T12167]      inet6_addr_add+0x30e/0xa40
[ 9389.111379][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9389.111379][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9389.111379][T12167]      netlink_rcv_skb+0x130/0x360
[ 9389.111379][T12167]      netlink_unicast+0x449/0x710
[ 9389.111379][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9389.111379][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9389.111379][T12167]      ___sys_sendmsg+0xee/0x170
[ 9389.111379][T12167]      __sys_sendmsg+0xcd/0x170
[ 9389.111379][T12167]      do_syscall_64+0xc6/0x1e0
[ 9389.111379][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9389.111379][T12167] 
[ 9389.113685][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9389.113685][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9389.113685][T12167]      ipv6_find_idev+0x102/0x170
[ 9389.113685][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9389.113685][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9389.113685][T12167]      netlink_rcv_skb+0x130/0x360
[ 9389.113685][T12167]      netlink_unicast+0x449/0x710
[ 9389.113685][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9389.113685][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9389.113685][T12167]      ___sys_sendmsg+0xee/0x170
[ 9389.113685][T12167]      __sys_sendmsg+0xcd/0x170
[ 9389.113685][T12167]      do_syscall_64+0xc6/0x1e0
[ 9389.113685][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9389.113685][T12167] 
[ 9389.115435][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9389.115435][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9389.115435][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9389.115435][T12167]      ipv6_find_idev+0x102/0x170
[ 9389.115435][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9389.115435][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9389.115435][T12167]      netlink_rcv_skb+0x130/0x360
[ 9389.115435][T12167]      netlink_unicast+0x449/0x710
[ 9389.115435][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9389.115435][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9389.115435][T12167]      ___sys_sendmsg+0xee/0x170
[ 9389.115435][T12167]      __sys_sendmsg+0xcd/0x170
[ 9389.115435][T12167]      do_syscall_64+0xc6/0x1e0
[ 9389.115435][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9389.115435][T12167] 
[ 9399.134880][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9399.135292][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9399.135292][   T10]      dst_init+0x84/0x4a0
[ 9399.135292][   T10]      dst_alloc+0x97/0x150
[ 9399.135292][   T10]      ip6_dst_alloc+0x23/0x90
[ 9399.135292][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9399.135292][   T10]      ip6_pol_route+0x56f/0x840
[ 9399.135292][   T10]      fib6_rule_lookup+0x334/0x630
[ 9399.135292][   T10]      ip6_route_output_flags+0x259/0x480
[ 9399.135292][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9399.135292][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9399.135292][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9399.135292][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9399.135292][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.135292][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.135292][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.135292][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.135292][   T10] 
[ 9399.137222][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.137222][   T10]      dst_init+0x84/0x4a0
[ 9399.137222][   T10]      dst_alloc+0x97/0x150
[ 9399.137222][   T10]      ip6_dst_alloc+0x23/0x90
[ 9399.137222][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9399.137222][   T10]      ip6_pol_route+0x56f/0x840
[ 9399.137222][   T10]      fib6_rule_lookup+0x334/0x630
[ 9399.137222][   T10]      ip6_route_output_flags+0x259/0x480
[ 9399.137222][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9399.137222][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9399.137222][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9399.137222][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9399.137222][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9399.137222][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.137222][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.137222][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.137222][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.137222][   T10] 
[ 9399.139242][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.139242][   T10]      dst_init+0x84/0x4a0
[ 9399.139242][   T10]      dst_alloc+0x97/0x150
[ 9399.139242][   T10]      ip6_dst_alloc+0x23/0x90
[ 9399.139242][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9399.139242][   T10]      ip6_pol_route+0x56f/0x840
[ 9399.139242][   T10]      fib6_rule_lookup+0x334/0x630
[ 9399.139242][   T10]      ip6_route_output_flags+0x259/0x480
[ 9399.139242][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9399.139242][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9399.139242][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9399.139242][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9399.139242][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9399.139242][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.139242][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.139242][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.139242][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.139242][   T10] 
[ 9399.141269][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.141269][   T10]      netdev_get_by_index+0x5e/0x80
[ 9399.141269][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9399.141269][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9399.141269][   T10]      ip6_route_add+0x1c/0x140
[ 9399.141269][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9399.141269][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9399.141269][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9399.141269][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.141269][   T10]      netlink_rcv_skb+0x130/0x360
[ 9399.141269][   T10]      netlink_unicast+0x449/0x710
[ 9399.141269][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9399.141269][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.141269][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.141269][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.141269][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.141269][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.141269][   T10] 
[ 9399.143385][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.143385][   T10]      netdev_get_by_index+0x5e/0x80
[ 9399.143385][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9399.143385][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9399.143385][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9399.143385][   T10]      ipv6_add_addr+0x411/0x2000
[ 9399.143385][   T10]      inet6_addr_add+0x30e/0xa40
[ 9399.143385][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9399.143385][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.143385][   T10]      netlink_rcv_skb+0x130/0x360
[ 9399.143385][   T10]      netlink_unicast+0x449/0x710
[ 9399.143385][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9399.143385][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.143385][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.143385][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.143385][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.143385][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.143385][   T10] 
[ 9399.145390][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.145390][   T10]      netdev_get_by_index+0x5e/0x80
[ 9399.145390][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9399.145390][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9399.145390][   T10]      ip6_route_add+0x1c/0x140
[ 9399.145390][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9399.145390][   T10]      addrconf_add_dev+0xe2/0x170
[ 9399.145390][   T10]      inet6_addr_add+0x12f/0xa40
[ 9399.145390][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9399.145390][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.145390][   T10]      netlink_rcv_skb+0x130/0x360
[ 9399.145390][   T10]      netlink_unicast+0x449/0x710
[ 9399.145390][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9399.145390][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.145390][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.145390][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.145390][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.145390][   T10] 
[ 9399.147396][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.147396][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9399.147396][   T10]      ipv6_find_idev+0x102/0x170
[ 9399.147396][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9399.147396][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.147396][   T10]      netlink_rcv_skb+0x130/0x360
[ 9399.147396][   T10]      netlink_unicast+0x449/0x710
[ 9399.147396][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9399.147396][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.147396][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.147396][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.147396][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.147396][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.147396][   T10] 
[ 9399.148940][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9399.148940][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9399.148940][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9399.148940][   T10]      ipv6_find_idev+0x102/0x170
[ 9399.148940][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9399.148940][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.148940][   T10]      netlink_rcv_skb+0x130/0x360
[ 9399.148940][   T10]      netlink_unicast+0x449/0x710
[ 9399.148940][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9399.148940][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.148940][   T10]      ___sys_sendmsg+0xee/0x170
[ 9399.148940][   T10]      __sys_sendmsg+0xcd/0x170
[ 9399.148940][   T10]      do_syscall_64+0xc6/0x1e0
[ 9399.148940][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.148940][   T10] 
[ 9399.366895][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9399.367355][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9399.367355][T12167]      netdev_get_by_index+0x5e/0x80
[ 9399.367355][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9399.367355][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9399.367355][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9399.367355][T12167]      ipv6_add_addr+0x411/0x2000
[ 9399.367355][T12167]      inet6_addr_add+0x30e/0xa40
[ 9399.367355][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9399.367355][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.367355][T12167]      netlink_rcv_skb+0x130/0x360
[ 9399.367355][T12167]      netlink_unicast+0x449/0x710
[ 9399.367355][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9399.367355][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.367355][T12167]      ___sys_sendmsg+0xee/0x170
[ 9399.367355][T12167]      __sys_sendmsg+0xcd/0x170
[ 9399.367355][T12167]      do_syscall_64+0xc6/0x1e0
[ 9399.367355][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.367355][T12167] 
[ 9399.369657][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9399.369657][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9399.369657][T12167]      ipv6_find_idev+0x102/0x170
[ 9399.369657][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9399.369657][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.369657][T12167]      netlink_rcv_skb+0x130/0x360
[ 9399.369657][T12167]      netlink_unicast+0x449/0x710
[ 9399.369657][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9399.369657][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.369657][T12167]      ___sys_sendmsg+0xee/0x170
[ 9399.369657][T12167]      __sys_sendmsg+0xcd/0x170
[ 9399.369657][T12167]      do_syscall_64+0xc6/0x1e0
[ 9399.369657][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.369657][T12167] 
[ 9399.371407][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9399.371407][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9399.371407][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9399.371407][T12167]      ipv6_find_idev+0x102/0x170
[ 9399.371407][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9399.371407][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9399.371407][T12167]      netlink_rcv_skb+0x130/0x360
[ 9399.371407][T12167]      netlink_unicast+0x449/0x710
[ 9399.371407][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9399.371407][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9399.371407][T12167]      ___sys_sendmsg+0xee/0x170
[ 9399.371407][T12167]      __sys_sendmsg+0xcd/0x170
[ 9399.371407][T12167]      do_syscall_64+0xc6/0x1e0
[ 9399.371407][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9399.371407][T12167] 
[ 9409.398835][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9409.399302][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9409.399302][   T10]      dst_init+0x84/0x4a0
[ 9409.399302][   T10]      dst_alloc+0x97/0x150
[ 9409.399302][   T10]      ip6_dst_alloc+0x23/0x90
[ 9409.399302][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9409.399302][   T10]      ip6_pol_route+0x56f/0x840
[ 9409.399302][   T10]      fib6_rule_lookup+0x334/0x630
[ 9409.399302][   T10]      ip6_route_output_flags+0x259/0x480
[ 9409.399302][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9409.399302][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9409.399302][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9409.399302][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9409.399302][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.399302][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.399302][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.399302][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.399302][   T10] 
[ 9409.401217][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.401217][   T10]      dst_init+0x84/0x4a0
[ 9409.401217][   T10]      dst_alloc+0x97/0x150
[ 9409.401217][   T10]      ip6_dst_alloc+0x23/0x90
[ 9409.401217][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9409.401217][   T10]      ip6_pol_route+0x56f/0x840
[ 9409.401217][   T10]      fib6_rule_lookup+0x334/0x630
[ 9409.401217][   T10]      ip6_route_output_flags+0x259/0x480
[ 9409.401217][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9409.401217][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9409.401217][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9409.401217][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9409.401217][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9409.401217][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.401217][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.401217][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.401217][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.401217][   T10] 
[ 9409.403238][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.403238][   T10]      dst_init+0x84/0x4a0
[ 9409.403238][   T10]      dst_alloc+0x97/0x150
[ 9409.403238][   T10]      ip6_dst_alloc+0x23/0x90
[ 9409.403238][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9409.403238][   T10]      ip6_pol_route+0x56f/0x840
[ 9409.403238][   T10]      fib6_rule_lookup+0x334/0x630
[ 9409.403238][   T10]      ip6_route_output_flags+0x259/0x480
[ 9409.403238][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9409.403238][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9409.403238][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9409.403238][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9409.403238][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9409.403238][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.403238][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.403238][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.403238][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.403238][   T10] 
[ 9409.405247][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.405247][   T10]      netdev_get_by_index+0x5e/0x80
[ 9409.405247][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9409.405247][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9409.405247][   T10]      ip6_route_add+0x1c/0x140
[ 9409.405247][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9409.405247][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9409.405247][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9409.405247][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.405247][   T10]      netlink_rcv_skb+0x130/0x360
[ 9409.405247][   T10]      netlink_unicast+0x449/0x710
[ 9409.405247][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9409.405247][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.405247][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.405247][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.405247][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.405247][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.405247][   T10] 
[ 9409.406722][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9409.407238][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.407238][   T10]      netdev_get_by_index+0x5e/0x80
[ 9409.407238][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9409.407238][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9409.407238][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9409.407238][   T10]      ipv6_add_addr+0x411/0x2000
[ 9409.407238][   T10]      inet6_addr_add+0x30e/0xa40
[ 9409.407238][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9409.407238][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.407238][   T10]      netlink_rcv_skb+0x130/0x360
[ 9409.407238][   T10]      netlink_unicast+0x449/0x710
[ 9409.407238][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9409.407238][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.407238][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.407238][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.407238][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.407238][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.407238][   T10] 
[ 9409.407569][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9409.407569][T12167]      netdev_get_by_index+0x5e/0x80
[ 9409.407569][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9409.407569][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9409.407569][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9409.407569][T12167]      ipv6_add_addr+0x411/0x2000
[ 9409.407569][T12167]      inet6_addr_add+0x30e/0xa40
[ 9409.407569][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9409.407569][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.407569][T12167]      netlink_rcv_skb+0x130/0x360
[ 9409.407569][T12167]      netlink_unicast+0x449/0x710
[ 9409.407569][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9409.407569][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.407569][T12167]      ___sys_sendmsg+0xee/0x170
[ 9409.407569][T12167]      __sys_sendmsg+0xcd/0x170
[ 9409.407569][T12167]      do_syscall_64+0xc6/0x1e0
[ 9409.407569][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.407569][T12167] 
[ 9409.409486][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.409486][   T10]      netdev_get_by_index+0x5e/0x80
[ 9409.409486][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9409.409486][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9409.409486][   T10]      ip6_route_add+0x1c/0x140
[ 9409.409486][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9409.409486][   T10]      addrconf_add_dev+0xe2/0x170
[ 9409.409486][   T10]      inet6_addr_add+0x12f/0xa40
[ 9409.409486][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9409.409486][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.409486][   T10]      netlink_rcv_skb+0x130/0x360
[ 9409.409486][   T10]      netlink_unicast+0x449/0x710
[ 9409.409486][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9409.409486][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.409486][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.409486][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.409486][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.409486][   T10] 
[ 9409.411766][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9409.411766][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9409.411766][T12167]      ipv6_find_idev+0x102/0x170
[ 9409.411766][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9409.411766][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.411766][T12167]      netlink_rcv_skb+0x130/0x360
[ 9409.411766][T12167]      netlink_unicast+0x449/0x710
[ 9409.411766][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9409.411766][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.411766][T12167]      ___sys_sendmsg+0xee/0x170
[ 9409.411766][T12167]      __sys_sendmsg+0xcd/0x170
[ 9409.411766][T12167]      do_syscall_64+0xc6/0x1e0
[ 9409.411766][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.411766][T12167] 
[ 9409.413716][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.413716][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9409.413716][   T10]      ipv6_find_idev+0x102/0x170
[ 9409.413716][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9409.413716][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.413716][   T10]      netlink_rcv_skb+0x130/0x360
[ 9409.413716][   T10]      netlink_unicast+0x449/0x710
[ 9409.413716][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9409.413716][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.413716][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.413716][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.413716][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.413716][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.413716][   T10] 
[ 9409.415456][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9409.415456][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9409.415456][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9409.415456][T12167]      ipv6_find_idev+0x102/0x170
[ 9409.415456][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9409.415456][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.415456][T12167]      netlink_rcv_skb+0x130/0x360
[ 9409.415456][T12167]      netlink_unicast+0x449/0x710
[ 9409.415456][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9409.415456][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.415456][T12167]      ___sys_sendmsg+0xee/0x170
[ 9409.415456][T12167]      __sys_sendmsg+0xcd/0x170
[ 9409.415456][T12167]      do_syscall_64+0xc6/0x1e0
[ 9409.415456][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.415456][T12167] 
[ 9409.416977][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9409.416977][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9409.416977][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9409.416977][   T10]      ipv6_find_idev+0x102/0x170
[ 9409.416977][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9409.416977][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9409.416977][   T10]      netlink_rcv_skb+0x130/0x360
[ 9409.416977][   T10]      netlink_unicast+0x449/0x710
[ 9409.416977][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9409.416977][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9409.416977][   T10]      ___sys_sendmsg+0xee/0x170
[ 9409.416977][   T10]      __sys_sendmsg+0xcd/0x170
[ 9409.416977][   T10]      do_syscall_64+0xc6/0x1e0
[ 9409.416977][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9409.416977][   T10] 
[ 9419.662748][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9419.663268][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9419.663268][T12167]      netdev_get_by_index+0x5e/0x80
[ 9419.663268][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9419.663268][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9419.663268][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9419.663268][T12167]      ipv6_add_addr+0x411/0x2000
[ 9419.663268][T12167]      inet6_addr_add+0x30e/0xa40
[ 9419.663268][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9419.663268][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.663268][T12167]      netlink_rcv_skb+0x130/0x360
[ 9419.663268][T12167]      netlink_unicast+0x449/0x710
[ 9419.663268][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9419.663268][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.663268][T12167]      ___sys_sendmsg+0xee/0x170
[ 9419.663268][T12167]      __sys_sendmsg+0xcd/0x170
[ 9419.663268][T12167]      do_syscall_64+0xc6/0x1e0
[ 9419.663268][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.663268][T12167] 
[ 9419.665545][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9419.665545][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9419.665545][T12167]      ipv6_find_idev+0x102/0x170
[ 9419.665545][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9419.665545][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.665545][T12167]      netlink_rcv_skb+0x130/0x360
[ 9419.665545][T12167]      netlink_unicast+0x449/0x710
[ 9419.665545][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9419.665545][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.665545][T12167]      ___sys_sendmsg+0xee/0x170
[ 9419.665545][T12167]      __sys_sendmsg+0xcd/0x170
[ 9419.665545][T12167]      do_syscall_64+0xc6/0x1e0
[ 9419.665545][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.665545][T12167] 
[ 9419.667281][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9419.667281][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9419.667281][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9419.667281][T12167]      ipv6_find_idev+0x102/0x170
[ 9419.667281][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9419.667281][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.667281][T12167]      netlink_rcv_skb+0x130/0x360
[ 9419.667281][T12167]      netlink_unicast+0x449/0x710
[ 9419.667281][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9419.667281][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.667281][T12167]      ___sys_sendmsg+0xee/0x170
[ 9419.667281][T12167]      __sys_sendmsg+0xcd/0x170
[ 9419.667281][T12167]      do_syscall_64+0xc6/0x1e0
[ 9419.667281][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.667281][T12167] 
[ 9419.670743][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9419.671194][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9419.671194][   T10]      dst_init+0x84/0x4a0
[ 9419.671194][   T10]      dst_alloc+0x97/0x150
[ 9419.671194][   T10]      ip6_dst_alloc+0x23/0x90
[ 9419.671194][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9419.671194][   T10]      ip6_pol_route+0x56f/0x840
[ 9419.671194][   T10]      fib6_rule_lookup+0x334/0x630
[ 9419.671194][   T10]      ip6_route_output_flags+0x259/0x480
[ 9419.671194][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9419.671194][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9419.671194][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9419.671194][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9419.671194][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.671194][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.671194][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.671194][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.671194][   T10] 
[ 9419.673328][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.673328][   T10]      dst_init+0x84/0x4a0
[ 9419.673328][   T10]      dst_alloc+0x97/0x150
[ 9419.673328][   T10]      ip6_dst_alloc+0x23/0x90
[ 9419.673328][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9419.673328][   T10]      ip6_pol_route+0x56f/0x840
[ 9419.673328][   T10]      fib6_rule_lookup+0x334/0x630
[ 9419.673328][   T10]      ip6_route_output_flags+0x259/0x480
[ 9419.673328][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9419.673328][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9419.673328][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9419.673328][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9419.673328][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9419.673328][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.673328][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.673328][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.673328][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.673328][   T10] 
[ 9419.675565][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.675565][   T10]      dst_init+0x84/0x4a0
[ 9419.675565][   T10]      dst_alloc+0x97/0x150
[ 9419.675565][   T10]      ip6_dst_alloc+0x23/0x90
[ 9419.675565][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9419.675565][   T10]      ip6_pol_route+0x56f/0x840
[ 9419.675565][   T10]      fib6_rule_lookup+0x334/0x630
[ 9419.675565][   T10]      ip6_route_output_flags+0x259/0x480
[ 9419.675565][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9419.675565][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9419.675565][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9419.675565][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9419.675565][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9419.675565][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.675565][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.675565][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.675565][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.675565][   T10] 
[ 9419.677811][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.677811][   T10]      netdev_get_by_index+0x5e/0x80
[ 9419.677811][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9419.677811][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9419.677811][   T10]      ip6_route_add+0x1c/0x140
[ 9419.677811][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9419.677811][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9419.677811][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9419.677811][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.677811][   T10]      netlink_rcv_skb+0x130/0x360
[ 9419.677811][   T10]      netlink_unicast+0x449/0x710
[ 9419.677811][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9419.677811][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.677811][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.677811][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.677811][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.677811][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.677811][   T10] 
[ 9419.680046][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.680046][   T10]      netdev_get_by_index+0x5e/0x80
[ 9419.680046][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9419.680046][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9419.680046][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9419.680046][   T10]      ipv6_add_addr+0x411/0x2000
[ 9419.680046][   T10]      inet6_addr_add+0x30e/0xa40
[ 9419.680046][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9419.680046][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.680046][   T10]      netlink_rcv_skb+0x130/0x360
[ 9419.680046][   T10]      netlink_unicast+0x449/0x710
[ 9419.680046][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9419.680046][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.680046][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.680046][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.680046][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.680046][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.680046][   T10] 
[ 9419.682282][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.682282][   T10]      netdev_get_by_index+0x5e/0x80
[ 9419.682282][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9419.682282][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9419.682282][   T10]      ip6_route_add+0x1c/0x140
[ 9419.682282][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9419.682282][   T10]      addrconf_add_dev+0xe2/0x170
[ 9419.682282][   T10]      inet6_addr_add+0x12f/0xa40
[ 9419.682282][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9419.682282][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.682282][   T10]      netlink_rcv_skb+0x130/0x360
[ 9419.682282][   T10]      netlink_unicast+0x449/0x710
[ 9419.682282][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9419.682282][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.682282][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.682282][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.682282][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.682282][   T10] 
[ 9419.684467][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.684467][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9419.684467][   T10]      ipv6_find_idev+0x102/0x170
[ 9419.684467][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9419.684467][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.684467][   T10]      netlink_rcv_skb+0x130/0x360
[ 9419.684467][   T10]      netlink_unicast+0x449/0x710
[ 9419.684467][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9419.684467][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.684467][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.684467][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.684467][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.684467][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.684467][   T10] 
[ 9419.686178][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9419.686178][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9419.686178][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9419.686178][   T10]      ipv6_find_idev+0x102/0x170
[ 9419.686178][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9419.686178][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9419.686178][   T10]      netlink_rcv_skb+0x130/0x360
[ 9419.686178][   T10]      netlink_unicast+0x449/0x710
[ 9419.686178][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9419.686178][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9419.686178][   T10]      ___sys_sendmsg+0xee/0x170
[ 9419.686178][   T10]      __sys_sendmsg+0xcd/0x170
[ 9419.686178][   T10]      do_syscall_64+0xc6/0x1e0
[ 9419.686178][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9419.686178][   T10] 
[ 9429.758806][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9429.759254][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9429.759254][T12167]      netdev_get_by_index+0x5e/0x80
[ 9429.759254][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9429.759254][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9429.759254][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9429.759254][T12167]      ipv6_add_addr+0x411/0x2000
[ 9429.759254][T12167]      inet6_addr_add+0x30e/0xa40
[ 9429.759254][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9429.759254][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.759254][T12167]      netlink_rcv_skb+0x130/0x360
[ 9429.759254][T12167]      netlink_unicast+0x449/0x710
[ 9429.759254][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9429.759254][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.759254][T12167]      ___sys_sendmsg+0xee/0x170
[ 9429.759254][T12167]      __sys_sendmsg+0xcd/0x170
[ 9429.759254][T12167]      do_syscall_64+0xc6/0x1e0
[ 9429.759254][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.759254][T12167] 
[ 9429.761531][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9429.761531][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9429.761531][T12167]      ipv6_find_idev+0x102/0x170
[ 9429.761531][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9429.761531][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.761531][T12167]      netlink_rcv_skb+0x130/0x360
[ 9429.761531][T12167]      netlink_unicast+0x449/0x710
[ 9429.761531][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9429.761531][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.761531][T12167]      ___sys_sendmsg+0xee/0x170
[ 9429.761531][T12167]      __sys_sendmsg+0xcd/0x170
[ 9429.761531][T12167]      do_syscall_64+0xc6/0x1e0
[ 9429.761531][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.761531][T12167] 
[ 9429.763268][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9429.763268][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9429.763268][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9429.763268][T12167]      ipv6_find_idev+0x102/0x170
[ 9429.763268][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9429.763268][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.763268][T12167]      netlink_rcv_skb+0x130/0x360
[ 9429.763268][T12167]      netlink_unicast+0x449/0x710
[ 9429.763268][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9429.763268][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.763268][T12167]      ___sys_sendmsg+0xee/0x170
[ 9429.763268][T12167]      __sys_sendmsg+0xcd/0x170
[ 9429.763268][T12167]      do_syscall_64+0xc6/0x1e0
[ 9429.763268][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.763268][T12167] 
[ 9429.766843][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9429.767180][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9429.767180][   T10]      dst_init+0x84/0x4a0
[ 9429.767180][   T10]      dst_alloc+0x97/0x150
[ 9429.767180][   T10]      ip6_dst_alloc+0x23/0x90
[ 9429.767180][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9429.767180][   T10]      ip6_pol_route+0x56f/0x840
[ 9429.767180][   T10]      fib6_rule_lookup+0x334/0x630
[ 9429.767180][   T10]      ip6_route_output_flags+0x259/0x480
[ 9429.767180][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9429.767180][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9429.767180][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9429.767180][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9429.767180][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.767180][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.767180][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.767180][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.767180][   T10] 
[ 9429.769095][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.769095][   T10]      dst_init+0x84/0x4a0
[ 9429.769095][   T10]      dst_alloc+0x97/0x150
[ 9429.769095][   T10]      ip6_dst_alloc+0x23/0x90
[ 9429.769095][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9429.769095][   T10]      ip6_pol_route+0x56f/0x840
[ 9429.769095][   T10]      fib6_rule_lookup+0x334/0x630
[ 9429.769095][   T10]      ip6_route_output_flags+0x259/0x480
[ 9429.769095][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9429.769095][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9429.769095][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9429.769095][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9429.769095][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9429.769095][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.769095][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.769095][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.769095][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.769095][   T10] 
[ 9429.771098][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.771098][   T10]      dst_init+0x84/0x4a0
[ 9429.771098][   T10]      dst_alloc+0x97/0x150
[ 9429.771098][   T10]      ip6_dst_alloc+0x23/0x90
[ 9429.771098][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9429.771098][   T10]      ip6_pol_route+0x56f/0x840
[ 9429.771098][   T10]      fib6_rule_lookup+0x334/0x630
[ 9429.771098][   T10]      ip6_route_output_flags+0x259/0x480
[ 9429.771098][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9429.771098][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9429.771098][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9429.771098][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9429.771098][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9429.771098][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.771098][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.771098][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.771098][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.771098][   T10] 
[ 9429.773119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.773119][   T10]      netdev_get_by_index+0x5e/0x80
[ 9429.773119][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9429.773119][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9429.773119][   T10]      ip6_route_add+0x1c/0x140
[ 9429.773119][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9429.773119][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9429.773119][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9429.773119][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.773119][   T10]      netlink_rcv_skb+0x130/0x360
[ 9429.773119][   T10]      netlink_unicast+0x449/0x710
[ 9429.773119][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9429.773119][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.773119][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.773119][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.773119][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.773119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.773119][   T10] 
[ 9429.775122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.775122][   T10]      netdev_get_by_index+0x5e/0x80
[ 9429.775122][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9429.775122][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9429.775122][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9429.775122][   T10]      ipv6_add_addr+0x411/0x2000
[ 9429.775122][   T10]      inet6_addr_add+0x30e/0xa40
[ 9429.775122][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9429.775122][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.775122][   T10]      netlink_rcv_skb+0x130/0x360
[ 9429.775122][   T10]      netlink_unicast+0x449/0x710
[ 9429.775122][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9429.775122][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.775122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.775122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.775122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.775122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.775122][   T10] 
[ 9429.777127][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.777127][   T10]      netdev_get_by_index+0x5e/0x80
[ 9429.777127][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9429.777127][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9429.777127][   T10]      ip6_route_add+0x1c/0x140
[ 9429.777127][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9429.777127][   T10]      addrconf_add_dev+0xe2/0x170
[ 9429.777127][   T10]      inet6_addr_add+0x12f/0xa40
[ 9429.777127][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9429.777127][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.777127][   T10]      netlink_rcv_skb+0x130/0x360
[ 9429.777127][   T10]      netlink_unicast+0x449/0x710
[ 9429.777127][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9429.777127][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.777127][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.777127][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.777127][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.777127][   T10] 
[ 9429.779092][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.779092][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9429.779092][   T10]      ipv6_find_idev+0x102/0x170
[ 9429.779092][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9429.779092][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.779092][   T10]      netlink_rcv_skb+0x130/0x360
[ 9429.779092][   T10]      netlink_unicast+0x449/0x710
[ 9429.779092][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9429.779092][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.779092][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.779092][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.779092][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.779092][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.779092][   T10] 
[ 9429.780639][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9429.780639][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9429.780639][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9429.780639][   T10]      ipv6_find_idev+0x102/0x170
[ 9429.780639][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9429.780639][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9429.780639][   T10]      netlink_rcv_skb+0x130/0x360
[ 9429.780639][   T10]      netlink_unicast+0x449/0x710
[ 9429.780639][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9429.780639][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9429.780639][   T10]      ___sys_sendmsg+0xee/0x170
[ 9429.780639][   T10]      __sys_sendmsg+0xcd/0x170
[ 9429.780639][   T10]      do_syscall_64+0xc6/0x1e0
[ 9429.780639][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9429.780639][   T10] 
[ 9439.766811][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9439.767335][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9439.767335][T12167]      netdev_get_by_index+0x5e/0x80
[ 9439.767335][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9439.767335][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9439.767335][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9439.767335][T12167]      ipv6_add_addr+0x411/0x2000
[ 9439.767335][T12167]      inet6_addr_add+0x30e/0xa40
[ 9439.767335][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9439.767335][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9439.767335][T12167]      netlink_rcv_skb+0x130/0x360
[ 9439.767335][T12167]      netlink_unicast+0x449/0x710
[ 9439.767335][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9439.767335][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9439.767335][T12167]      ___sys_sendmsg+0xee/0x170
[ 9439.767335][T12167]      __sys_sendmsg+0xcd/0x170
[ 9439.767335][T12167]      do_syscall_64+0xc6/0x1e0
[ 9439.767335][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9439.767335][T12167] 
[ 9439.769670][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9439.769670][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9439.769670][T12167]      ipv6_find_idev+0x102/0x170
[ 9439.769670][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9439.769670][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9439.769670][T12167]      netlink_rcv_skb+0x130/0x360
[ 9439.769670][T12167]      netlink_unicast+0x449/0x710
[ 9439.769670][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9439.769670][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9439.769670][T12167]      ___sys_sendmsg+0xee/0x170
[ 9439.769670][T12167]      __sys_sendmsg+0xcd/0x170
[ 9439.769670][T12167]      do_syscall_64+0xc6/0x1e0
[ 9439.769670][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9439.769670][T12167] 
[ 9439.771417][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9439.771417][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9439.771417][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9439.771417][T12167]      ipv6_find_idev+0x102/0x170
[ 9439.771417][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9439.771417][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9439.771417][T12167]      netlink_rcv_skb+0x130/0x360
[ 9439.771417][T12167]      netlink_unicast+0x449/0x710
[ 9439.771417][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9439.771417][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9439.771417][T12167]      ___sys_sendmsg+0xee/0x170
[ 9439.771417][T12167]      __sys_sendmsg+0xcd/0x170
[ 9439.771417][T12167]      do_syscall_64+0xc6/0x1e0
[ 9439.771417][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9439.771417][T12167] 
[ 9440.038817][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9440.039152][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9440.039152][   T10]      dst_init+0x84/0x4a0
[ 9440.039152][   T10]      dst_alloc+0x97/0x150
[ 9440.039152][   T10]      ip6_dst_alloc+0x23/0x90
[ 9440.039152][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9440.039152][   T10]      ip6_pol_route+0x56f/0x840
[ 9440.039152][   T10]      fib6_rule_lookup+0x334/0x630
[ 9440.039152][   T10]      ip6_route_output_flags+0x259/0x480
[ 9440.039152][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9440.039152][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9440.039152][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9440.039152][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9440.039152][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.039152][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.039152][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.039152][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.039152][   T10] 
[ 9440.041035][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.041035][   T10]      dst_init+0x84/0x4a0
[ 9440.041035][   T10]      dst_alloc+0x97/0x150
[ 9440.041035][   T10]      ip6_dst_alloc+0x23/0x90
[ 9440.041035][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9440.041035][   T10]      ip6_pol_route+0x56f/0x840
[ 9440.041035][   T10]      fib6_rule_lookup+0x334/0x630
[ 9440.041035][   T10]      ip6_route_output_flags+0x259/0x480
[ 9440.041035][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9440.041035][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9440.041035][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9440.041035][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9440.041035][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9440.041035][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.041035][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.041035][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.041035][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.041035][   T10] 
[ 9440.043037][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.043037][   T10]      dst_init+0x84/0x4a0
[ 9440.043037][   T10]      dst_alloc+0x97/0x150
[ 9440.043037][   T10]      ip6_dst_alloc+0x23/0x90
[ 9440.043037][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9440.043037][   T10]      ip6_pol_route+0x56f/0x840
[ 9440.043037][   T10]      fib6_rule_lookup+0x334/0x630
[ 9440.043037][   T10]      ip6_route_output_flags+0x259/0x480
[ 9440.043037][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9440.043037][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9440.043037][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9440.043037][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9440.043037][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9440.043037][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.043037][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.043037][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.043037][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.043037][   T10] 
[ 9440.045033][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.045033][   T10]      netdev_get_by_index+0x5e/0x80
[ 9440.045033][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9440.045033][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9440.045033][   T10]      ip6_route_add+0x1c/0x140
[ 9440.045033][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9440.045033][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9440.045033][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9440.045033][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9440.045033][   T10]      netlink_rcv_skb+0x130/0x360
[ 9440.045033][   T10]      netlink_unicast+0x449/0x710
[ 9440.045033][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9440.045033][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9440.045033][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.045033][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.045033][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.045033][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.045033][   T10] 
[ 9440.047038][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.047038][   T10]      netdev_get_by_index+0x5e/0x80
[ 9440.047038][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9440.047038][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9440.047038][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9440.047038][   T10]      ipv6_add_addr+0x411/0x2000
[ 9440.047038][   T10]      inet6_addr_add+0x30e/0xa40
[ 9440.047038][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9440.047038][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9440.047038][   T10]      netlink_rcv_skb+0x130/0x360
[ 9440.047038][   T10]      netlink_unicast+0x449/0x710
[ 9440.047038][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9440.047038][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9440.047038][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.047038][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.047038][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.047038][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.047038][   T10] 
[ 9440.049032][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.049032][   T10]      netdev_get_by_index+0x5e/0x80
[ 9440.049032][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9440.049032][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9440.049032][   T10]      ip6_route_add+0x1c/0x140
[ 9440.049032][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9440.049032][   T10]      addrconf_add_dev+0xe2/0x170
[ 9440.049032][   T10]      inet6_addr_add+0x12f/0xa40
[ 9440.049032][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9440.049032][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9440.049032][   T10]      netlink_rcv_skb+0x130/0x360
[ 9440.049032][   T10]      netlink_unicast+0x449/0x710
[ 9440.049032][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9440.049032][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9440.049032][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.049032][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.049032][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.049032][   T10] 
[ 9440.050998][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.050998][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9440.050998][   T10]      ipv6_find_idev+0x102/0x170
[ 9440.050998][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9440.050998][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9440.050998][   T10]      netlink_rcv_skb+0x130/0x360
[ 9440.050998][   T10]      netlink_unicast+0x449/0x710
[ 9440.050998][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9440.050998][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9440.050998][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.050998][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.050998][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.050998][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.050998][   T10] 
[ 9440.052544][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9440.052544][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9440.052544][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9440.052544][   T10]      ipv6_find_idev+0x102/0x170
[ 9440.052544][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9440.052544][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9440.052544][   T10]      netlink_rcv_skb+0x130/0x360
[ 9440.052544][   T10]      netlink_unicast+0x449/0x710
[ 9440.052544][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9440.052544][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9440.052544][   T10]      ___sys_sendmsg+0xee/0x170
[ 9440.052544][   T10]      __sys_sendmsg+0xcd/0x170
[ 9440.052544][   T10]      do_syscall_64+0xc6/0x1e0
[ 9440.052544][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9440.052544][   T10] 
[ 9450.014813][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9450.015246][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9450.015246][T12167]      netdev_get_by_index+0x5e/0x80
[ 9450.015246][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9450.015246][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9450.015246][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9450.015246][T12167]      ipv6_add_addr+0x411/0x2000
[ 9450.015246][T12167]      inet6_addr_add+0x30e/0xa40
[ 9450.015246][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9450.015246][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.015246][T12167]      netlink_rcv_skb+0x130/0x360
[ 9450.015246][T12167]      netlink_unicast+0x449/0x710
[ 9450.015246][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9450.015246][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.015246][T12167]      ___sys_sendmsg+0xee/0x170
[ 9450.015246][T12167]      __sys_sendmsg+0xcd/0x170
[ 9450.015246][T12167]      do_syscall_64+0xc6/0x1e0
[ 9450.015246][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.015246][T12167] 
[ 9450.017527][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9450.017527][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9450.017527][T12167]      ipv6_find_idev+0x102/0x170
[ 9450.017527][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9450.017527][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.017527][T12167]      netlink_rcv_skb+0x130/0x360
[ 9450.017527][T12167]      netlink_unicast+0x449/0x710
[ 9450.017527][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9450.017527][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.017527][T12167]      ___sys_sendmsg+0xee/0x170
[ 9450.017527][T12167]      __sys_sendmsg+0xcd/0x170
[ 9450.017527][T12167]      do_syscall_64+0xc6/0x1e0
[ 9450.017527][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.017527][T12167] 
[ 9450.019261][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9450.019261][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9450.019261][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9450.019261][T12167]      ipv6_find_idev+0x102/0x170
[ 9450.019261][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9450.019261][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.019261][T12167]      netlink_rcv_skb+0x130/0x360
[ 9450.019261][T12167]      netlink_unicast+0x449/0x710
[ 9450.019261][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9450.019261][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.019261][T12167]      ___sys_sendmsg+0xee/0x170
[ 9450.019261][T12167]      __sys_sendmsg+0xcd/0x170
[ 9450.019261][T12167]      do_syscall_64+0xc6/0x1e0
[ 9450.019261][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.019261][T12167] 
[ 9450.294812][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9450.295153][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9450.295153][   T10]      dst_init+0x84/0x4a0
[ 9450.295153][   T10]      dst_alloc+0x97/0x150
[ 9450.295153][   T10]      ip6_dst_alloc+0x23/0x90
[ 9450.295153][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9450.295153][   T10]      ip6_pol_route+0x56f/0x840
[ 9450.295153][   T10]      fib6_rule_lookup+0x334/0x630
[ 9450.295153][   T10]      ip6_route_output_flags+0x259/0x480
[ 9450.295153][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9450.295153][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9450.295153][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9450.295153][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9450.295153][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.295153][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.295153][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.295153][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.295153][   T10] 
[ 9450.297150][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.297150][   T10]      dst_init+0x84/0x4a0
[ 9450.297150][   T10]      dst_alloc+0x97/0x150
[ 9450.297150][   T10]      ip6_dst_alloc+0x23/0x90
[ 9450.297150][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9450.297150][   T10]      ip6_pol_route+0x56f/0x840
[ 9450.297150][   T10]      fib6_rule_lookup+0x334/0x630
[ 9450.297150][   T10]      ip6_route_output_flags+0x259/0x480
[ 9450.297150][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9450.297150][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9450.297150][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9450.297150][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9450.297150][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9450.297150][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.297150][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.297150][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.297150][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.297150][   T10] 
[ 9450.299158][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.299158][   T10]      dst_init+0x84/0x4a0
[ 9450.299158][   T10]      dst_alloc+0x97/0x150
[ 9450.299158][   T10]      ip6_dst_alloc+0x23/0x90
[ 9450.299158][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9450.299158][   T10]      ip6_pol_route+0x56f/0x840
[ 9450.299158][   T10]      fib6_rule_lookup+0x334/0x630
[ 9450.299158][   T10]      ip6_route_output_flags+0x259/0x480
[ 9450.299158][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9450.299158][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9450.299158][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9450.299158][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9450.299158][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9450.299158][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.299158][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.299158][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.299158][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.299158][   T10] 
[ 9450.301155][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.301155][   T10]      netdev_get_by_index+0x5e/0x80
[ 9450.301155][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9450.301155][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9450.301155][   T10]      ip6_route_add+0x1c/0x140
[ 9450.301155][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9450.301155][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9450.301155][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9450.301155][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.301155][   T10]      netlink_rcv_skb+0x130/0x360
[ 9450.301155][   T10]      netlink_unicast+0x449/0x710
[ 9450.301155][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9450.301155][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.301155][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.301155][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.301155][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.301155][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.301155][   T10] 
[ 9450.303160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.303160][   T10]      netdev_get_by_index+0x5e/0x80
[ 9450.303160][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9450.303160][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9450.303160][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9450.303160][   T10]      ipv6_add_addr+0x411/0x2000
[ 9450.303160][   T10]      inet6_addr_add+0x30e/0xa40
[ 9450.303160][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9450.303160][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.303160][   T10]      netlink_rcv_skb+0x130/0x360
[ 9450.303160][   T10]      netlink_unicast+0x449/0x710
[ 9450.303160][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9450.303160][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.303160][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.303160][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.303160][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.303160][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.303160][   T10] 
[ 9450.305159][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.305159][   T10]      netdev_get_by_index+0x5e/0x80
[ 9450.305159][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9450.305159][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9450.305159][   T10]      ip6_route_add+0x1c/0x140
[ 9450.305159][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9450.305159][   T10]      addrconf_add_dev+0xe2/0x170
[ 9450.305159][   T10]      inet6_addr_add+0x12f/0xa40
[ 9450.305159][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9450.305159][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.305159][   T10]      netlink_rcv_skb+0x130/0x360
[ 9450.305159][   T10]      netlink_unicast+0x449/0x710
[ 9450.305159][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9450.305159][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.305159][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.305159][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.305159][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.305159][   T10] 
[ 9450.307125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.307125][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9450.307125][   T10]      ipv6_find_idev+0x102/0x170
[ 9450.307125][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9450.307125][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.307125][   T10]      netlink_rcv_skb+0x130/0x360
[ 9450.307125][   T10]      netlink_unicast+0x449/0x710
[ 9450.307125][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9450.307125][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.307125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.307125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.307125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.307125][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.307125][   T10] 
[ 9450.308667][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9450.308667][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9450.308667][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9450.308667][   T10]      ipv6_find_idev+0x102/0x170
[ 9450.308667][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9450.308667][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9450.308667][   T10]      netlink_rcv_skb+0x130/0x360
[ 9450.308667][   T10]      netlink_unicast+0x449/0x710
[ 9450.308667][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9450.308667][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9450.308667][   T10]      ___sys_sendmsg+0xee/0x170
[ 9450.308667][   T10]      __sys_sendmsg+0xcd/0x170
[ 9450.308667][   T10]      do_syscall_64+0xc6/0x1e0
[ 9450.308667][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9450.308667][   T10] 
[ 9460.262825][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9460.263334][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9460.263334][T12167]      netdev_get_by_index+0x5e/0x80
[ 9460.263334][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9460.263334][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9460.263334][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9460.263334][T12167]      ipv6_add_addr+0x411/0x2000
[ 9460.263334][T12167]      inet6_addr_add+0x30e/0xa40
[ 9460.263334][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9460.263334][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.263334][T12167]      netlink_rcv_skb+0x130/0x360
[ 9460.263334][T12167]      netlink_unicast+0x449/0x710
[ 9460.263334][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9460.263334][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.263334][T12167]      ___sys_sendmsg+0xee/0x170
[ 9460.263334][T12167]      __sys_sendmsg+0xcd/0x170
[ 9460.263334][T12167]      do_syscall_64+0xc6/0x1e0
[ 9460.263334][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.263334][T12167] 
[ 9460.265620][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9460.265620][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9460.265620][T12167]      ipv6_find_idev+0x102/0x170
[ 9460.265620][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9460.265620][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.265620][T12167]      netlink_rcv_skb+0x130/0x360
[ 9460.265620][T12167]      netlink_unicast+0x449/0x710
[ 9460.265620][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9460.265620][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.265620][T12167]      ___sys_sendmsg+0xee/0x170
[ 9460.265620][T12167]      __sys_sendmsg+0xcd/0x170
[ 9460.265620][T12167]      do_syscall_64+0xc6/0x1e0
[ 9460.265620][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.265620][T12167] 
[ 9460.267358][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9460.267358][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9460.267358][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9460.267358][T12167]      ipv6_find_idev+0x102/0x170
[ 9460.267358][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9460.267358][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.267358][T12167]      netlink_rcv_skb+0x130/0x360
[ 9460.267358][T12167]      netlink_unicast+0x449/0x710
[ 9460.267358][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9460.267358][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.267358][T12167]      ___sys_sendmsg+0xee/0x170
[ 9460.267358][T12167]      __sys_sendmsg+0xcd/0x170
[ 9460.267358][T12167]      do_syscall_64+0xc6/0x1e0
[ 9460.267358][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.267358][T12167] 
[ 9460.550745][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9460.551162][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9460.551162][   T10]      dst_init+0x84/0x4a0
[ 9460.551162][   T10]      dst_alloc+0x97/0x150
[ 9460.551162][   T10]      ip6_dst_alloc+0x23/0x90
[ 9460.551162][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9460.551162][   T10]      ip6_pol_route+0x56f/0x840
[ 9460.551162][   T10]      fib6_rule_lookup+0x334/0x630
[ 9460.551162][   T10]      ip6_route_output_flags+0x259/0x480
[ 9460.551162][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9460.551162][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9460.551162][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9460.551162][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9460.551162][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.551162][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.551162][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.551162][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.551162][   T10] 
[ 9460.553068][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.553068][   T10]      dst_init+0x84/0x4a0
[ 9460.553068][   T10]      dst_alloc+0x97/0x150
[ 9460.553068][   T10]      ip6_dst_alloc+0x23/0x90
[ 9460.553068][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9460.553068][   T10]      ip6_pol_route+0x56f/0x840
[ 9460.553068][   T10]      fib6_rule_lookup+0x334/0x630
[ 9460.553068][   T10]      ip6_route_output_flags+0x259/0x480
[ 9460.553068][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9460.553068][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9460.553068][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9460.553068][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9460.553068][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9460.553068][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.553068][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.553068][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.553068][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.553068][   T10] 
[ 9460.555069][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.555069][   T10]      dst_init+0x84/0x4a0
[ 9460.555069][   T10]      dst_alloc+0x97/0x150
[ 9460.555069][   T10]      ip6_dst_alloc+0x23/0x90
[ 9460.555069][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9460.555069][   T10]      ip6_pol_route+0x56f/0x840
[ 9460.555069][   T10]      fib6_rule_lookup+0x334/0x630
[ 9460.555069][   T10]      ip6_route_output_flags+0x259/0x480
[ 9460.555069][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9460.555069][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9460.555069][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9460.555069][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9460.555069][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9460.555069][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.555069][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.555069][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.555069][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.555069][   T10] 
[ 9460.557072][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.557072][   T10]      netdev_get_by_index+0x5e/0x80
[ 9460.557072][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9460.557072][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9460.557072][   T10]      ip6_route_add+0x1c/0x140
[ 9460.557072][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9460.557072][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9460.557072][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9460.557072][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.557072][   T10]      netlink_rcv_skb+0x130/0x360
[ 9460.557072][   T10]      netlink_unicast+0x449/0x710
[ 9460.557072][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9460.557072][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.557072][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.557072][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.557072][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.557072][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.557072][   T10] 
[ 9460.559095][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.559095][   T10]      netdev_get_by_index+0x5e/0x80
[ 9460.559095][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9460.559095][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9460.559095][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9460.559095][   T10]      ipv6_add_addr+0x411/0x2000
[ 9460.559095][   T10]      inet6_addr_add+0x30e/0xa40
[ 9460.559095][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9460.559095][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.559095][   T10]      netlink_rcv_skb+0x130/0x360
[ 9460.559095][   T10]      netlink_unicast+0x449/0x710
[ 9460.559095][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9460.559095][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.559095][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.559095][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.559095][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.559095][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.559095][   T10] 
[ 9460.561094][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.561094][   T10]      netdev_get_by_index+0x5e/0x80
[ 9460.561094][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9460.561094][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9460.561094][   T10]      ip6_route_add+0x1c/0x140
[ 9460.561094][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9460.561094][   T10]      addrconf_add_dev+0xe2/0x170
[ 9460.561094][   T10]      inet6_addr_add+0x12f/0xa40
[ 9460.561094][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9460.561094][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.561094][   T10]      netlink_rcv_skb+0x130/0x360
[ 9460.561094][   T10]      netlink_unicast+0x449/0x710
[ 9460.561094][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9460.561094][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.561094][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.561094][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.561094][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.561094][   T10] 
[ 9460.563077][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.563077][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9460.563077][   T10]      ipv6_find_idev+0x102/0x170
[ 9460.563077][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9460.563077][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.563077][   T10]      netlink_rcv_skb+0x130/0x360
[ 9460.563077][   T10]      netlink_unicast+0x449/0x710
[ 9460.563077][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9460.563077][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.563077][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.563077][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.563077][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.563077][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.563077][   T10] 
[ 9460.564619][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9460.564619][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9460.564619][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9460.564619][   T10]      ipv6_find_idev+0x102/0x170
[ 9460.564619][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9460.564619][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9460.564619][   T10]      netlink_rcv_skb+0x130/0x360
[ 9460.564619][   T10]      netlink_unicast+0x449/0x710
[ 9460.564619][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9460.564619][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9460.564619][   T10]      ___sys_sendmsg+0xee/0x170
[ 9460.564619][   T10]      __sys_sendmsg+0xcd/0x170
[ 9460.564619][   T10]      do_syscall_64+0xc6/0x1e0
[ 9460.564619][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9460.564619][   T10] 
[ 9463.078937][   T42] INFO: task modprobe:12646 blocked for more than 737 seconds.
[ 9463.079248][   T42]       Not tainted 6.8.0-virtme #1
[ 9463.079368][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9463.079568][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9463.079856][   T42] Call Trace:
[ 9463.079956][   T42]  <TASK>
[ 9463.080027][   T42]  __schedule+0x705/0x1ac0
[ 9463.080164][   T42]  ? __pfx___schedule+0x10/0x10
[ 9463.080289][   T42]  ? schedule+0x1a5/0x210
[ 9463.080387][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9463.080518][   T42]  ? mark_lock+0x38/0x3e0
[ 9463.080615][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9463.080761][   T42]  ? schedule+0x1a5/0x210
[ 9463.080860][   T42]  schedule+0xdf/0x210
[ 9463.080956][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9463.081080][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9463.081220][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9463.081382][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9463.081506][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9463.081637][   T42]  ? lock_acquire+0x1c1/0x220
[ 9463.081773][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9463.081904][   T42]  down_write+0x1c9/0x200
[ 9463.081999][   T42]  ? __pfx_down_write+0x10/0x10
[ 9463.082123][   T42]  ? __pfx__printk+0x10/0x10
[ 9463.082250][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9463.082380][   T42]  register_pernet_subsys+0x1a/0x50
[ 9463.082507][   T42]  tcf_register_action+0xa3/0x600
[ 9463.082635][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9463.082801][   T42]  do_one_initcall+0xc8/0x3f0
[ 9463.082934][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9463.083065][   T42]  ? __create_object+0x5e/0xb0
[ 9463.083193][   T42]  ? kasan_unpoison+0x27/0x60
[ 9463.083322][   T42]  do_init_module+0x233/0x740
[ 9463.083457][   T42]  load_module+0x16b5/0x2350
[ 9463.083592][   T42]  ? __pfx_load_module+0x10/0x10
[ 9463.083733][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9463.083864][   T42]  ? kernel_read_file+0x300/0x520
[ 9463.083993][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9463.084128][   T42]  ? init_module_from_file+0xd2/0x130
[ 9463.084250][   T42]  init_module_from_file+0xd2/0x130
[ 9463.084372][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9463.084530][   T42]  ? __lock_release+0x103/0x460
[ 9463.084668][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9463.084810][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9463.084934][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9463.085061][   T42]  idempotent_init_module+0x342/0x620
[ 9463.085186][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9463.085360][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9463.085485][   T42]  do_syscall_64+0xc6/0x1e0
[ 9463.085615][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9463.085783][   T42] RIP: 0033:0x7fac120f1e5d
[ 9463.085912][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9463.086099][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9463.086283][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9463.086464][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9463.086652][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9463.086852][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9463.087052][   T42]  </TASK>
[ 9463.087146][   T42] 
[ 9463.087146][   T42] Showing all locks held in the system:
[ 9463.087322][   T42] 3 locks held by kworker/u16:0/10:
[ 9463.087442][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9463.087711][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9463.087929][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9463.088147][   T42] 1 lock held by khungtaskd/42:
[ 9463.088264][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9463.088491][   T42] 2 locks held by kworker/u17:1/44:
[ 9463.088607][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9463.088861][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9463.089138][   T42] 1 lock held by modprobe/12646:
[ 9463.089258][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9463.089507][   T42] 
[ 9463.089567][   T42] =============================================
[ 9463.089567][   T42] 
[ 9470.510904][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9470.511452][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9470.511452][T12167]      netdev_get_by_index+0x5e/0x80
[ 9470.511452][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9470.511452][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9470.511452][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9470.511452][T12167]      ipv6_add_addr+0x411/0x2000
[ 9470.511452][T12167]      inet6_addr_add+0x30e/0xa40
[ 9470.511452][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9470.511452][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.511452][T12167]      netlink_rcv_skb+0x130/0x360
[ 9470.511452][T12167]      netlink_unicast+0x449/0x710
[ 9470.511452][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9470.511452][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.511452][T12167]      ___sys_sendmsg+0xee/0x170
[ 9470.511452][T12167]      __sys_sendmsg+0xcd/0x170
[ 9470.511452][T12167]      do_syscall_64+0xc6/0x1e0
[ 9470.511452][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.511452][T12167] 
[ 9470.513762][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9470.513762][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9470.513762][T12167]      ipv6_find_idev+0x102/0x170
[ 9470.513762][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9470.513762][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.513762][T12167]      netlink_rcv_skb+0x130/0x360
[ 9470.513762][T12167]      netlink_unicast+0x449/0x710
[ 9470.513762][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9470.513762][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.513762][T12167]      ___sys_sendmsg+0xee/0x170
[ 9470.513762][T12167]      __sys_sendmsg+0xcd/0x170
[ 9470.513762][T12167]      do_syscall_64+0xc6/0x1e0
[ 9470.513762][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.513762][T12167] 
[ 9470.515523][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9470.515523][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9470.515523][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9470.515523][T12167]      ipv6_find_idev+0x102/0x170
[ 9470.515523][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9470.515523][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.515523][T12167]      netlink_rcv_skb+0x130/0x360
[ 9470.515523][T12167]      netlink_unicast+0x449/0x710
[ 9470.515523][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9470.515523][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.515523][T12167]      ___sys_sendmsg+0xee/0x170
[ 9470.515523][T12167]      __sys_sendmsg+0xcd/0x170
[ 9470.515523][T12167]      do_syscall_64+0xc6/0x1e0
[ 9470.515523][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.515523][T12167] 
[ 9470.758825][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9470.759233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9470.759233][   T10]      dst_init+0x84/0x4a0
[ 9470.759233][   T10]      dst_alloc+0x97/0x150
[ 9470.759233][   T10]      ip6_dst_alloc+0x23/0x90
[ 9470.759233][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9470.759233][   T10]      ip6_pol_route+0x56f/0x840
[ 9470.759233][   T10]      fib6_rule_lookup+0x334/0x630
[ 9470.759233][   T10]      ip6_route_output_flags+0x259/0x480
[ 9470.759233][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9470.759233][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9470.759233][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9470.759233][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9470.759233][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.759233][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.759233][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.759233][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.759233][   T10] 
[ 9470.761152][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.761152][   T10]      dst_init+0x84/0x4a0
[ 9470.761152][   T10]      dst_alloc+0x97/0x150
[ 9470.761152][   T10]      ip6_dst_alloc+0x23/0x90
[ 9470.761152][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9470.761152][   T10]      ip6_pol_route+0x56f/0x840
[ 9470.761152][   T10]      fib6_rule_lookup+0x334/0x630
[ 9470.761152][   T10]      ip6_route_output_flags+0x259/0x480
[ 9470.761152][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9470.761152][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9470.761152][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9470.761152][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9470.761152][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9470.761152][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.761152][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.761152][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.761152][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.761152][   T10] 
[ 9470.763175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.763175][   T10]      dst_init+0x84/0x4a0
[ 9470.763175][   T10]      dst_alloc+0x97/0x150
[ 9470.763175][   T10]      ip6_dst_alloc+0x23/0x90
[ 9470.763175][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9470.763175][   T10]      ip6_pol_route+0x56f/0x840
[ 9470.763175][   T10]      fib6_rule_lookup+0x334/0x630
[ 9470.763175][   T10]      ip6_route_output_flags+0x259/0x480
[ 9470.763175][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9470.763175][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9470.763175][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9470.763175][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9470.763175][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9470.763175][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.763175][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.763175][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.763175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.763175][   T10] 
[ 9470.765184][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.765184][   T10]      netdev_get_by_index+0x5e/0x80
[ 9470.765184][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9470.765184][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9470.765184][   T10]      ip6_route_add+0x1c/0x140
[ 9470.765184][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9470.765184][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9470.765184][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9470.765184][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.765184][   T10]      netlink_rcv_skb+0x130/0x360
[ 9470.765184][   T10]      netlink_unicast+0x449/0x710
[ 9470.765184][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9470.765184][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.765184][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.765184][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.765184][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.765184][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.765184][   T10] 
[ 9470.767195][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.767195][   T10]      netdev_get_by_index+0x5e/0x80
[ 9470.767195][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9470.767195][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9470.767195][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9470.767195][   T10]      ipv6_add_addr+0x411/0x2000
[ 9470.767195][   T10]      inet6_addr_add+0x30e/0xa40
[ 9470.767195][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9470.767195][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.767195][   T10]      netlink_rcv_skb+0x130/0x360
[ 9470.767195][   T10]      netlink_unicast+0x449/0x710
[ 9470.767195][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9470.767195][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.767195][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.767195][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.767195][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.767195][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.767195][   T10] 
[ 9470.769208][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.769208][   T10]      netdev_get_by_index+0x5e/0x80
[ 9470.769208][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9470.769208][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9470.769208][   T10]      ip6_route_add+0x1c/0x140
[ 9470.769208][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9470.769208][   T10]      addrconf_add_dev+0xe2/0x170
[ 9470.769208][   T10]      inet6_addr_add+0x12f/0xa40
[ 9470.769208][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9470.769208][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.769208][   T10]      netlink_rcv_skb+0x130/0x360
[ 9470.769208][   T10]      netlink_unicast+0x449/0x710
[ 9470.769208][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9470.769208][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.769208][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.769208][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.769208][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.769208][   T10] 
[ 9470.771191][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.771191][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9470.771191][   T10]      ipv6_find_idev+0x102/0x170
[ 9470.771191][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9470.771191][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.771191][   T10]      netlink_rcv_skb+0x130/0x360
[ 9470.771191][   T10]      netlink_unicast+0x449/0x710
[ 9470.771191][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9470.771191][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.771191][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.771191][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.771191][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.771191][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.771191][   T10] 
[ 9470.772759][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9470.772759][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9470.772759][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9470.772759][   T10]      ipv6_find_idev+0x102/0x170
[ 9470.772759][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9470.772759][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9470.772759][   T10]      netlink_rcv_skb+0x130/0x360
[ 9470.772759][   T10]      netlink_unicast+0x449/0x710
[ 9470.772759][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9470.772759][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9470.772759][   T10]      ___sys_sendmsg+0xee/0x170
[ 9470.772759][   T10]      __sys_sendmsg+0xcd/0x170
[ 9470.772759][   T10]      do_syscall_64+0xc6/0x1e0
[ 9470.772759][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9470.772759][   T10] 
[ 9480.518875][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9480.519398][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9480.519398][T12167]      netdev_get_by_index+0x5e/0x80
[ 9480.519398][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9480.519398][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9480.519398][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9480.519398][T12167]      ipv6_add_addr+0x411/0x2000
[ 9480.519398][T12167]      inet6_addr_add+0x30e/0xa40
[ 9480.519398][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9480.519398][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.519398][T12167]      netlink_rcv_skb+0x130/0x360
[ 9480.519398][T12167]      netlink_unicast+0x449/0x710
[ 9480.519398][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9480.519398][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.519398][T12167]      ___sys_sendmsg+0xee/0x170
[ 9480.519398][T12167]      __sys_sendmsg+0xcd/0x170
[ 9480.519398][T12167]      do_syscall_64+0xc6/0x1e0
[ 9480.519398][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.519398][T12167] 
[ 9480.521723][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9480.521723][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9480.521723][T12167]      ipv6_find_idev+0x102/0x170
[ 9480.521723][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9480.521723][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.521723][T12167]      netlink_rcv_skb+0x130/0x360
[ 9480.521723][T12167]      netlink_unicast+0x449/0x710
[ 9480.521723][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9480.521723][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.521723][T12167]      ___sys_sendmsg+0xee/0x170
[ 9480.521723][T12167]      __sys_sendmsg+0xcd/0x170
[ 9480.521723][T12167]      do_syscall_64+0xc6/0x1e0
[ 9480.521723][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.521723][T12167] 
[ 9480.523485][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9480.523485][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9480.523485][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9480.523485][T12167]      ipv6_find_idev+0x102/0x170
[ 9480.523485][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9480.523485][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.523485][T12167]      netlink_rcv_skb+0x130/0x360
[ 9480.523485][T12167]      netlink_unicast+0x449/0x710
[ 9480.523485][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9480.523485][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.523485][T12167]      ___sys_sendmsg+0xee/0x170
[ 9480.523485][T12167]      __sys_sendmsg+0xcd/0x170
[ 9480.523485][T12167]      do_syscall_64+0xc6/0x1e0
[ 9480.523485][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.523485][T12167] 
[ 9480.782875][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9480.783274][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9480.783274][   T10]      dst_init+0x84/0x4a0
[ 9480.783274][   T10]      dst_alloc+0x97/0x150
[ 9480.783274][   T10]      ip6_dst_alloc+0x23/0x90
[ 9480.783274][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9480.783274][   T10]      ip6_pol_route+0x56f/0x840
[ 9480.783274][   T10]      fib6_rule_lookup+0x334/0x630
[ 9480.783274][   T10]      ip6_route_output_flags+0x259/0x480
[ 9480.783274][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9480.783274][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9480.783274][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9480.783274][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9480.783274][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.783274][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.783274][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.783274][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.783274][   T10] 
[ 9480.785199][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.785199][   T10]      dst_init+0x84/0x4a0
[ 9480.785199][   T10]      dst_alloc+0x97/0x150
[ 9480.785199][   T10]      ip6_dst_alloc+0x23/0x90
[ 9480.785199][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9480.785199][   T10]      ip6_pol_route+0x56f/0x840
[ 9480.785199][   T10]      fib6_rule_lookup+0x334/0x630
[ 9480.785199][   T10]      ip6_route_output_flags+0x259/0x480
[ 9480.785199][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9480.785199][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9480.785199][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9480.785199][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9480.785199][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9480.785199][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.785199][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.785199][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.785199][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.785199][   T10] 
[ 9480.787221][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.787221][   T10]      dst_init+0x84/0x4a0
[ 9480.787221][   T10]      dst_alloc+0x97/0x150
[ 9480.787221][   T10]      ip6_dst_alloc+0x23/0x90
[ 9480.787221][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9480.787221][   T10]      ip6_pol_route+0x56f/0x840
[ 9480.787221][   T10]      fib6_rule_lookup+0x334/0x630
[ 9480.787221][   T10]      ip6_route_output_flags+0x259/0x480
[ 9480.787221][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9480.787221][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9480.787221][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9480.787221][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9480.787221][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9480.787221][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.787221][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.787221][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.787221][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.787221][   T10] 
[ 9480.789241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.789241][   T10]      netdev_get_by_index+0x5e/0x80
[ 9480.789241][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9480.789241][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9480.789241][   T10]      ip6_route_add+0x1c/0x140
[ 9480.789241][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9480.789241][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9480.789241][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9480.789241][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.789241][   T10]      netlink_rcv_skb+0x130/0x360
[ 9480.789241][   T10]      netlink_unicast+0x449/0x710
[ 9480.789241][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9480.789241][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.789241][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.789241][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.789241][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.789241][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.789241][   T10] 
[ 9480.791282][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.791282][   T10]      netdev_get_by_index+0x5e/0x80
[ 9480.791282][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9480.791282][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9480.791282][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9480.791282][   T10]      ipv6_add_addr+0x411/0x2000
[ 9480.791282][   T10]      inet6_addr_add+0x30e/0xa40
[ 9480.791282][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9480.791282][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.791282][   T10]      netlink_rcv_skb+0x130/0x360
[ 9480.791282][   T10]      netlink_unicast+0x449/0x710
[ 9480.791282][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9480.791282][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.791282][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.791282][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.791282][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.791282][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.791282][   T10] 
[ 9480.793304][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.793304][   T10]      netdev_get_by_index+0x5e/0x80
[ 9480.793304][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9480.793304][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9480.793304][   T10]      ip6_route_add+0x1c/0x140
[ 9480.793304][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9480.793304][   T10]      addrconf_add_dev+0xe2/0x170
[ 9480.793304][   T10]      inet6_addr_add+0x12f/0xa40
[ 9480.793304][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9480.793304][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.793304][   T10]      netlink_rcv_skb+0x130/0x360
[ 9480.793304][   T10]      netlink_unicast+0x449/0x710
[ 9480.793304][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9480.793304][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.793304][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.793304][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.793304][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.793304][   T10] 
[ 9480.795293][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.795293][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9480.795293][   T10]      ipv6_find_idev+0x102/0x170
[ 9480.795293][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9480.795293][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.795293][   T10]      netlink_rcv_skb+0x130/0x360
[ 9480.795293][   T10]      netlink_unicast+0x449/0x710
[ 9480.795293][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9480.795293][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.795293][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.795293][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.795293][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.795293][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.795293][   T10] 
[ 9480.796851][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9480.796851][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9480.796851][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9480.796851][   T10]      ipv6_find_idev+0x102/0x170
[ 9480.796851][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9480.796851][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9480.796851][   T10]      netlink_rcv_skb+0x130/0x360
[ 9480.796851][   T10]      netlink_unicast+0x449/0x710
[ 9480.796851][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9480.796851][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9480.796851][   T10]      ___sys_sendmsg+0xee/0x170
[ 9480.796851][   T10]      __sys_sendmsg+0xcd/0x170
[ 9480.796851][   T10]      do_syscall_64+0xc6/0x1e0
[ 9480.796851][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9480.796851][   T10] 
[ 9490.526844][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9490.527342][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9490.527342][T12167]      netdev_get_by_index+0x5e/0x80
[ 9490.527342][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9490.527342][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9490.527342][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9490.527342][T12167]      ipv6_add_addr+0x411/0x2000
[ 9490.527342][T12167]      inet6_addr_add+0x30e/0xa40
[ 9490.527342][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9490.527342][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9490.527342][T12167]      netlink_rcv_skb+0x130/0x360
[ 9490.527342][T12167]      netlink_unicast+0x449/0x710
[ 9490.527342][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9490.527342][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9490.527342][T12167]      ___sys_sendmsg+0xee/0x170
[ 9490.527342][T12167]      __sys_sendmsg+0xcd/0x170
[ 9490.527342][T12167]      do_syscall_64+0xc6/0x1e0
[ 9490.527342][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9490.527342][T12167] 
[ 9490.529636][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9490.529636][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9490.529636][T12167]      ipv6_find_idev+0x102/0x170
[ 9490.529636][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9490.529636][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9490.529636][T12167]      netlink_rcv_skb+0x130/0x360
[ 9490.529636][T12167]      netlink_unicast+0x449/0x710
[ 9490.529636][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9490.529636][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9490.529636][T12167]      ___sys_sendmsg+0xee/0x170
[ 9490.529636][T12167]      __sys_sendmsg+0xcd/0x170
[ 9490.529636][T12167]      do_syscall_64+0xc6/0x1e0
[ 9490.529636][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9490.529636][T12167] 
[ 9490.531389][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9490.531389][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9490.531389][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9490.531389][T12167]      ipv6_find_idev+0x102/0x170
[ 9490.531389][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9490.531389][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9490.531389][T12167]      netlink_rcv_skb+0x130/0x360
[ 9490.531389][T12167]      netlink_unicast+0x449/0x710
[ 9490.531389][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9490.531389][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9490.531389][T12167]      ___sys_sendmsg+0xee/0x170
[ 9490.531389][T12167]      __sys_sendmsg+0xcd/0x170
[ 9490.531389][T12167]      do_syscall_64+0xc6/0x1e0
[ 9490.531389][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9490.531389][T12167] 
[ 9491.046826][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9491.047264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9491.047264][   T10]      dst_init+0x84/0x4a0
[ 9491.047264][   T10]      dst_alloc+0x97/0x150
[ 9491.047264][   T10]      ip6_dst_alloc+0x23/0x90
[ 9491.047264][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9491.047264][   T10]      ip6_pol_route+0x56f/0x840
[ 9491.047264][   T10]      fib6_rule_lookup+0x334/0x630
[ 9491.047264][   T10]      ip6_route_output_flags+0x259/0x480
[ 9491.047264][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9491.047264][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9491.047264][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9491.047264][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9491.047264][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.047264][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.047264][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.047264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.047264][   T10] 
[ 9491.049169][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.049169][   T10]      dst_init+0x84/0x4a0
[ 9491.049169][   T10]      dst_alloc+0x97/0x150
[ 9491.049169][   T10]      ip6_dst_alloc+0x23/0x90
[ 9491.049169][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9491.049169][   T10]      ip6_pol_route+0x56f/0x840
[ 9491.049169][   T10]      fib6_rule_lookup+0x334/0x630
[ 9491.049169][   T10]      ip6_route_output_flags+0x259/0x480
[ 9491.049169][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9491.049169][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9491.049169][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9491.049169][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9491.049169][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9491.049169][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.049169][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.049169][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.049169][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.049169][   T10] 
[ 9491.051187][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.051187][   T10]      dst_init+0x84/0x4a0
[ 9491.051187][   T10]      dst_alloc+0x97/0x150
[ 9491.051187][   T10]      ip6_dst_alloc+0x23/0x90
[ 9491.051187][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9491.051187][   T10]      ip6_pol_route+0x56f/0x840
[ 9491.051187][   T10]      fib6_rule_lookup+0x334/0x630
[ 9491.051187][   T10]      ip6_route_output_flags+0x259/0x480
[ 9491.051187][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9491.051187][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9491.051187][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9491.051187][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9491.051187][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9491.051187][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.051187][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.051187][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.051187][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.051187][   T10] 
[ 9491.053185][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.053185][   T10]      netdev_get_by_index+0x5e/0x80
[ 9491.053185][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9491.053185][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9491.053185][   T10]      ip6_route_add+0x1c/0x140
[ 9491.053185][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9491.053185][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9491.053185][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9491.053185][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9491.053185][   T10]      netlink_rcv_skb+0x130/0x360
[ 9491.053185][   T10]      netlink_unicast+0x449/0x710
[ 9491.053185][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9491.053185][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9491.053185][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.053185][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.053185][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.053185][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.053185][   T10] 
[ 9491.055188][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.055188][   T10]      netdev_get_by_index+0x5e/0x80
[ 9491.055188][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9491.055188][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9491.055188][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9491.055188][   T10]      ipv6_add_addr+0x411/0x2000
[ 9491.055188][   T10]      inet6_addr_add+0x30e/0xa40
[ 9491.055188][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9491.055188][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9491.055188][   T10]      netlink_rcv_skb+0x130/0x360
[ 9491.055188][   T10]      netlink_unicast+0x449/0x710
[ 9491.055188][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9491.055188][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9491.055188][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.055188][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.055188][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.055188][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.055188][   T10] 
[ 9491.057190][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.057190][   T10]      netdev_get_by_index+0x5e/0x80
[ 9491.057190][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9491.057190][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9491.057190][   T10]      ip6_route_add+0x1c/0x140
[ 9491.057190][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9491.057190][   T10]      addrconf_add_dev+0xe2/0x170
[ 9491.057190][   T10]      inet6_addr_add+0x12f/0xa40
[ 9491.057190][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9491.057190][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9491.057190][   T10]      netlink_rcv_skb+0x130/0x360
[ 9491.057190][   T10]      netlink_unicast+0x449/0x710
[ 9491.057190][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9491.057190][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9491.057190][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.057190][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.057190][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.057190][   T10] 
[ 9491.059159][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.059159][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9491.059159][   T10]      ipv6_find_idev+0x102/0x170
[ 9491.059159][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9491.059159][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9491.059159][   T10]      netlink_rcv_skb+0x130/0x360
[ 9491.059159][   T10]      netlink_unicast+0x449/0x710
[ 9491.059159][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9491.059159][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9491.059159][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.059159][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.059159][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.059159][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.059159][   T10] 
[ 9491.060699][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9491.060699][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9491.060699][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9491.060699][   T10]      ipv6_find_idev+0x102/0x170
[ 9491.060699][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9491.060699][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9491.060699][   T10]      netlink_rcv_skb+0x130/0x360
[ 9491.060699][   T10]      netlink_unicast+0x449/0x710
[ 9491.060699][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9491.060699][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9491.060699][   T10]      ___sys_sendmsg+0xee/0x170
[ 9491.060699][   T10]      __sys_sendmsg+0xcd/0x170
[ 9491.060699][   T10]      do_syscall_64+0xc6/0x1e0
[ 9491.060699][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9491.060699][   T10] 
[ 9500.734727][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9500.735228][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9500.735228][T12167]      netdev_get_by_index+0x5e/0x80
[ 9500.735228][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9500.735228][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9500.735228][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9500.735228][T12167]      ipv6_add_addr+0x411/0x2000
[ 9500.735228][T12167]      inet6_addr_add+0x30e/0xa40
[ 9500.735228][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9500.735228][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9500.735228][T12167]      netlink_rcv_skb+0x130/0x360
[ 9500.735228][T12167]      netlink_unicast+0x449/0x710
[ 9500.735228][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9500.735228][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9500.735228][T12167]      ___sys_sendmsg+0xee/0x170
[ 9500.735228][T12167]      __sys_sendmsg+0xcd/0x170
[ 9500.735228][T12167]      do_syscall_64+0xc6/0x1e0
[ 9500.735228][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9500.735228][T12167] 
[ 9500.737514][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9500.737514][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9500.737514][T12167]      ipv6_find_idev+0x102/0x170
[ 9500.737514][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9500.737514][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9500.737514][T12167]      netlink_rcv_skb+0x130/0x360
[ 9500.737514][T12167]      netlink_unicast+0x449/0x710
[ 9500.737514][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9500.737514][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9500.737514][T12167]      ___sys_sendmsg+0xee/0x170
[ 9500.737514][T12167]      __sys_sendmsg+0xcd/0x170
[ 9500.737514][T12167]      do_syscall_64+0xc6/0x1e0
[ 9500.737514][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9500.737514][T12167] 
[ 9500.739266][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9500.739266][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9500.739266][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9500.739266][T12167]      ipv6_find_idev+0x102/0x170
[ 9500.739266][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9500.739266][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9500.739266][T12167]      netlink_rcv_skb+0x130/0x360
[ 9500.739266][T12167]      netlink_unicast+0x449/0x710
[ 9500.739266][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9500.739266][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9500.739266][T12167]      ___sys_sendmsg+0xee/0x170
[ 9500.739266][T12167]      __sys_sendmsg+0xcd/0x170
[ 9500.739266][T12167]      do_syscall_64+0xc6/0x1e0
[ 9500.739266][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9500.739266][T12167] 
[ 9501.262875][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9501.263301][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9501.263301][   T10]      dst_init+0x84/0x4a0
[ 9501.263301][   T10]      dst_alloc+0x97/0x150
[ 9501.263301][   T10]      ip6_dst_alloc+0x23/0x90
[ 9501.263301][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9501.263301][   T10]      ip6_pol_route+0x56f/0x840
[ 9501.263301][   T10]      fib6_rule_lookup+0x334/0x630
[ 9501.263301][   T10]      ip6_route_output_flags+0x259/0x480
[ 9501.263301][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9501.263301][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9501.263301][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9501.263301][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9501.263301][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.263301][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.263301][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.263301][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.263301][   T10] 
[ 9501.265496][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.265496][   T10]      dst_init+0x84/0x4a0
[ 9501.265496][   T10]      dst_alloc+0x97/0x150
[ 9501.265496][   T10]      ip6_dst_alloc+0x23/0x90
[ 9501.265496][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9501.265496][   T10]      ip6_pol_route+0x56f/0x840
[ 9501.265496][   T10]      fib6_rule_lookup+0x334/0x630
[ 9501.265496][   T10]      ip6_route_output_flags+0x259/0x480
[ 9501.265496][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9501.265496][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9501.265496][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9501.265496][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9501.265496][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9501.265496][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.265496][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.265496][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.265496][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.265496][   T10] 
[ 9501.267512][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.267512][   T10]      dst_init+0x84/0x4a0
[ 9501.267512][   T10]      dst_alloc+0x97/0x150
[ 9501.267512][   T10]      ip6_dst_alloc+0x23/0x90
[ 9501.267512][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9501.267512][   T10]      ip6_pol_route+0x56f/0x840
[ 9501.267512][   T10]      fib6_rule_lookup+0x334/0x630
[ 9501.267512][   T10]      ip6_route_output_flags+0x259/0x480
[ 9501.267512][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9501.267512][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9501.267512][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9501.267512][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9501.267512][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9501.267512][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.267512][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.267512][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.267512][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.267512][   T10] 
[ 9501.269528][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.269528][   T10]      netdev_get_by_index+0x5e/0x80
[ 9501.269528][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9501.269528][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9501.269528][   T10]      ip6_route_add+0x1c/0x140
[ 9501.269528][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9501.269528][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9501.269528][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9501.269528][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9501.269528][   T10]      netlink_rcv_skb+0x130/0x360
[ 9501.269528][   T10]      netlink_unicast+0x449/0x710
[ 9501.269528][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9501.269528][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9501.269528][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.269528][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.269528][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.269528][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.269528][   T10] 
[ 9501.271556][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.271556][   T10]      netdev_get_by_index+0x5e/0x80
[ 9501.271556][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9501.271556][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9501.271556][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9501.271556][   T10]      ipv6_add_addr+0x411/0x2000
[ 9501.271556][   T10]      inet6_addr_add+0x30e/0xa40
[ 9501.271556][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9501.271556][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9501.271556][   T10]      netlink_rcv_skb+0x130/0x360
[ 9501.271556][   T10]      netlink_unicast+0x449/0x710
[ 9501.271556][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9501.271556][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9501.271556][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.271556][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.271556][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.271556][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.271556][   T10] 
[ 9501.273571][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.273571][   T10]      netdev_get_by_index+0x5e/0x80
[ 9501.273571][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9501.273571][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9501.273571][   T10]      ip6_route_add+0x1c/0x140
[ 9501.273571][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9501.273571][   T10]      addrconf_add_dev+0xe2/0x170
[ 9501.273571][   T10]      inet6_addr_add+0x12f/0xa40
[ 9501.273571][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9501.273571][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9501.273571][   T10]      netlink_rcv_skb+0x130/0x360
[ 9501.273571][   T10]      netlink_unicast+0x449/0x710
[ 9501.273571][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9501.273571][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9501.273571][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.273571][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.273571][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.273571][   T10] 
[ 9501.275559][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.275559][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9501.275559][   T10]      ipv6_find_idev+0x102/0x170
[ 9501.275559][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9501.275559][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9501.275559][   T10]      netlink_rcv_skb+0x130/0x360
[ 9501.275559][   T10]      netlink_unicast+0x449/0x710
[ 9501.275559][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9501.275559][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9501.275559][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.275559][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.275559][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.275559][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.275559][   T10] 
[ 9501.277113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9501.277113][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9501.277113][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9501.277113][   T10]      ipv6_find_idev+0x102/0x170
[ 9501.277113][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9501.277113][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9501.277113][   T10]      netlink_rcv_skb+0x130/0x360
[ 9501.277113][   T10]      netlink_unicast+0x449/0x710
[ 9501.277113][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9501.277113][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9501.277113][   T10]      ___sys_sendmsg+0xee/0x170
[ 9501.277113][   T10]      __sys_sendmsg+0xcd/0x170
[ 9501.277113][   T10]      do_syscall_64+0xc6/0x1e0
[ 9501.277113][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9501.277113][   T10] 
[ 9510.894827][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9510.895338][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9510.895338][T12167]      netdev_get_by_index+0x5e/0x80
[ 9510.895338][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9510.895338][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9510.895338][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9510.895338][T12167]      ipv6_add_addr+0x411/0x2000
[ 9510.895338][T12167]      inet6_addr_add+0x30e/0xa40
[ 9510.895338][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9510.895338][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9510.895338][T12167]      netlink_rcv_skb+0x130/0x360
[ 9510.895338][T12167]      netlink_unicast+0x449/0x710
[ 9510.895338][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9510.895338][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9510.895338][T12167]      ___sys_sendmsg+0xee/0x170
[ 9510.895338][T12167]      __sys_sendmsg+0xcd/0x170
[ 9510.895338][T12167]      do_syscall_64+0xc6/0x1e0
[ 9510.895338][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9510.895338][T12167] 
[ 9510.897617][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9510.897617][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9510.897617][T12167]      ipv6_find_idev+0x102/0x170
[ 9510.897617][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9510.897617][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9510.897617][T12167]      netlink_rcv_skb+0x130/0x360
[ 9510.897617][T12167]      netlink_unicast+0x449/0x710
[ 9510.897617][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9510.897617][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9510.897617][T12167]      ___sys_sendmsg+0xee/0x170
[ 9510.897617][T12167]      __sys_sendmsg+0xcd/0x170
[ 9510.897617][T12167]      do_syscall_64+0xc6/0x1e0
[ 9510.897617][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9510.897617][T12167] 
[ 9510.899358][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9510.899358][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9510.899358][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9510.899358][T12167]      ipv6_find_idev+0x102/0x170
[ 9510.899358][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9510.899358][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9510.899358][T12167]      netlink_rcv_skb+0x130/0x360
[ 9510.899358][T12167]      netlink_unicast+0x449/0x710
[ 9510.899358][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9510.899358][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9510.899358][T12167]      ___sys_sendmsg+0xee/0x170
[ 9510.899358][T12167]      __sys_sendmsg+0xcd/0x170
[ 9510.899358][T12167]      do_syscall_64+0xc6/0x1e0
[ 9510.899358][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9510.899358][T12167] 
[ 9511.406813][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9511.407222][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9511.407222][   T10]      dst_init+0x84/0x4a0
[ 9511.407222][   T10]      dst_alloc+0x97/0x150
[ 9511.407222][   T10]      ip6_dst_alloc+0x23/0x90
[ 9511.407222][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9511.407222][   T10]      ip6_pol_route+0x56f/0x840
[ 9511.407222][   T10]      fib6_rule_lookup+0x334/0x630
[ 9511.407222][   T10]      ip6_route_output_flags+0x259/0x480
[ 9511.407222][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9511.407222][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9511.407222][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9511.407222][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9511.407222][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.407222][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.407222][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.407222][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.407222][   T10] 
[ 9511.409164][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.409164][   T10]      dst_init+0x84/0x4a0
[ 9511.409164][   T10]      dst_alloc+0x97/0x150
[ 9511.409164][   T10]      ip6_dst_alloc+0x23/0x90
[ 9511.409164][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9511.409164][   T10]      ip6_pol_route+0x56f/0x840
[ 9511.409164][   T10]      fib6_rule_lookup+0x334/0x630
[ 9511.409164][   T10]      ip6_route_output_flags+0x259/0x480
[ 9511.409164][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9511.409164][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9511.409164][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9511.409164][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9511.409164][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9511.409164][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.409164][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.409164][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.409164][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.409164][   T10] 
[ 9511.411184][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.411184][   T10]      dst_init+0x84/0x4a0
[ 9511.411184][   T10]      dst_alloc+0x97/0x150
[ 9511.411184][   T10]      ip6_dst_alloc+0x23/0x90
[ 9511.411184][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9511.411184][   T10]      ip6_pol_route+0x56f/0x840
[ 9511.411184][   T10]      fib6_rule_lookup+0x334/0x630
[ 9511.411184][   T10]      ip6_route_output_flags+0x259/0x480
[ 9511.411184][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9511.411184][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9511.411184][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9511.411184][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9511.411184][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9511.411184][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.411184][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.411184][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.411184][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.411184][   T10] 
[ 9511.413203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.413203][   T10]      netdev_get_by_index+0x5e/0x80
[ 9511.413203][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9511.413203][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9511.413203][   T10]      ip6_route_add+0x1c/0x140
[ 9511.413203][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9511.413203][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9511.413203][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9511.413203][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9511.413203][   T10]      netlink_rcv_skb+0x130/0x360
[ 9511.413203][   T10]      netlink_unicast+0x449/0x710
[ 9511.413203][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9511.413203][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9511.413203][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.413203][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.413203][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.413203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.413203][   T10] 
[ 9511.415235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.415235][   T10]      netdev_get_by_index+0x5e/0x80
[ 9511.415235][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9511.415235][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9511.415235][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9511.415235][   T10]      ipv6_add_addr+0x411/0x2000
[ 9511.415235][   T10]      inet6_addr_add+0x30e/0xa40
[ 9511.415235][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9511.415235][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9511.415235][   T10]      netlink_rcv_skb+0x130/0x360
[ 9511.415235][   T10]      netlink_unicast+0x449/0x710
[ 9511.415235][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9511.415235][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9511.415235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.415235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.415235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.415235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.415235][   T10] 
[ 9511.417250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.417250][   T10]      netdev_get_by_index+0x5e/0x80
[ 9511.417250][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9511.417250][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9511.417250][   T10]      ip6_route_add+0x1c/0x140
[ 9511.417250][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9511.417250][   T10]      addrconf_add_dev+0xe2/0x170
[ 9511.417250][   T10]      inet6_addr_add+0x12f/0xa40
[ 9511.417250][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9511.417250][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9511.417250][   T10]      netlink_rcv_skb+0x130/0x360
[ 9511.417250][   T10]      netlink_unicast+0x449/0x710
[ 9511.417250][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9511.417250][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9511.417250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.417250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.417250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.417250][   T10] 
[ 9511.419235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.419235][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9511.419235][   T10]      ipv6_find_idev+0x102/0x170
[ 9511.419235][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9511.419235][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9511.419235][   T10]      netlink_rcv_skb+0x130/0x360
[ 9511.419235][   T10]      netlink_unicast+0x449/0x710
[ 9511.419235][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9511.419235][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9511.419235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.419235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.419235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.419235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.419235][   T10] 
[ 9511.420798][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9511.420798][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9511.420798][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9511.420798][   T10]      ipv6_find_idev+0x102/0x170
[ 9511.420798][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9511.420798][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9511.420798][   T10]      netlink_rcv_skb+0x130/0x360
[ 9511.420798][   T10]      netlink_unicast+0x449/0x710
[ 9511.420798][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9511.420798][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9511.420798][   T10]      ___sys_sendmsg+0xee/0x170
[ 9511.420798][   T10]      __sys_sendmsg+0xcd/0x170
[ 9511.420798][   T10]      do_syscall_64+0xc6/0x1e0
[ 9511.420798][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9511.420798][   T10] 
[ 9521.142845][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9521.143393][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9521.143393][T12167]      netdev_get_by_index+0x5e/0x80
[ 9521.143393][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9521.143393][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9521.143393][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9521.143393][T12167]      ipv6_add_addr+0x411/0x2000
[ 9521.143393][T12167]      inet6_addr_add+0x30e/0xa40
[ 9521.143393][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9521.143393][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.143393][T12167]      netlink_rcv_skb+0x130/0x360
[ 9521.143393][T12167]      netlink_unicast+0x449/0x710
[ 9521.143393][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9521.143393][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.143393][T12167]      ___sys_sendmsg+0xee/0x170
[ 9521.143393][T12167]      __sys_sendmsg+0xcd/0x170
[ 9521.143393][T12167]      do_syscall_64+0xc6/0x1e0
[ 9521.143393][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.143393][T12167] 
[ 9521.145681][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9521.145681][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9521.145681][T12167]      ipv6_find_idev+0x102/0x170
[ 9521.145681][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9521.145681][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.145681][T12167]      netlink_rcv_skb+0x130/0x360
[ 9521.145681][T12167]      netlink_unicast+0x449/0x710
[ 9521.145681][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9521.145681][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.145681][T12167]      ___sys_sendmsg+0xee/0x170
[ 9521.145681][T12167]      __sys_sendmsg+0xcd/0x170
[ 9521.145681][T12167]      do_syscall_64+0xc6/0x1e0
[ 9521.145681][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.145681][T12167] 
[ 9521.147429][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9521.147429][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9521.147429][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9521.147429][T12167]      ipv6_find_idev+0x102/0x170
[ 9521.147429][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9521.147429][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.147429][T12167]      netlink_rcv_skb+0x130/0x360
[ 9521.147429][T12167]      netlink_unicast+0x449/0x710
[ 9521.147429][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9521.147429][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.147429][T12167]      ___sys_sendmsg+0xee/0x170
[ 9521.147429][T12167]      __sys_sendmsg+0xcd/0x170
[ 9521.147429][T12167]      do_syscall_64+0xc6/0x1e0
[ 9521.147429][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.147429][T12167] 
[ 9521.670806][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9521.671291][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9521.671291][   T10]      dst_init+0x84/0x4a0
[ 9521.671291][   T10]      dst_alloc+0x97/0x150
[ 9521.671291][   T10]      ip6_dst_alloc+0x23/0x90
[ 9521.671291][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9521.671291][   T10]      ip6_pol_route+0x56f/0x840
[ 9521.671291][   T10]      fib6_rule_lookup+0x334/0x630
[ 9521.671291][   T10]      ip6_route_output_flags+0x259/0x480
[ 9521.671291][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9521.671291][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9521.671291][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9521.671291][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9521.671291][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.671291][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.671291][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.671291][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.671291][   T10] 
[ 9521.673217][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.673217][   T10]      dst_init+0x84/0x4a0
[ 9521.673217][   T10]      dst_alloc+0x97/0x150
[ 9521.673217][   T10]      ip6_dst_alloc+0x23/0x90
[ 9521.673217][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9521.673217][   T10]      ip6_pol_route+0x56f/0x840
[ 9521.673217][   T10]      fib6_rule_lookup+0x334/0x630
[ 9521.673217][   T10]      ip6_route_output_flags+0x259/0x480
[ 9521.673217][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9521.673217][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9521.673217][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9521.673217][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9521.673217][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9521.673217][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.673217][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.673217][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.673217][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.673217][   T10] 
[ 9521.675234][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.675234][   T10]      dst_init+0x84/0x4a0
[ 9521.675234][   T10]      dst_alloc+0x97/0x150
[ 9521.675234][   T10]      ip6_dst_alloc+0x23/0x90
[ 9521.675234][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9521.675234][   T10]      ip6_pol_route+0x56f/0x840
[ 9521.675234][   T10]      fib6_rule_lookup+0x334/0x630
[ 9521.675234][   T10]      ip6_route_output_flags+0x259/0x480
[ 9521.675234][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9521.675234][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9521.675234][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9521.675234][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9521.675234][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9521.675234][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.675234][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.675234][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.675234][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.675234][   T10] 
[ 9521.677245][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.677245][   T10]      netdev_get_by_index+0x5e/0x80
[ 9521.677245][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9521.677245][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9521.677245][   T10]      ip6_route_add+0x1c/0x140
[ 9521.677245][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9521.677245][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9521.677245][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9521.677245][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.677245][   T10]      netlink_rcv_skb+0x130/0x360
[ 9521.677245][   T10]      netlink_unicast+0x449/0x710
[ 9521.677245][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9521.677245][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.677245][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.677245][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.677245][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.677245][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.677245][   T10] 
[ 9521.679259][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.679259][   T10]      netdev_get_by_index+0x5e/0x80
[ 9521.679259][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9521.679259][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9521.679259][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9521.679259][   T10]      ipv6_add_addr+0x411/0x2000
[ 9521.679259][   T10]      inet6_addr_add+0x30e/0xa40
[ 9521.679259][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9521.679259][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.679259][   T10]      netlink_rcv_skb+0x130/0x360
[ 9521.679259][   T10]      netlink_unicast+0x449/0x710
[ 9521.679259][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9521.679259][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.679259][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.679259][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.679259][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.679259][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.679259][   T10] 
[ 9521.681280][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.681280][   T10]      netdev_get_by_index+0x5e/0x80
[ 9521.681280][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9521.681280][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9521.681280][   T10]      ip6_route_add+0x1c/0x140
[ 9521.681280][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9521.681280][   T10]      addrconf_add_dev+0xe2/0x170
[ 9521.681280][   T10]      inet6_addr_add+0x12f/0xa40
[ 9521.681280][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9521.681280][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.681280][   T10]      netlink_rcv_skb+0x130/0x360
[ 9521.681280][   T10]      netlink_unicast+0x449/0x710
[ 9521.681280][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9521.681280][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.681280][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.681280][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.681280][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.681280][   T10] 
[ 9521.683257][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.683257][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9521.683257][   T10]      ipv6_find_idev+0x102/0x170
[ 9521.683257][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9521.683257][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.683257][   T10]      netlink_rcv_skb+0x130/0x360
[ 9521.683257][   T10]      netlink_unicast+0x449/0x710
[ 9521.683257][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9521.683257][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.683257][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.683257][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.683257][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.683257][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.683257][   T10] 
[ 9521.684796][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9521.684796][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9521.684796][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9521.684796][   T10]      ipv6_find_idev+0x102/0x170
[ 9521.684796][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9521.684796][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9521.684796][   T10]      netlink_rcv_skb+0x130/0x360
[ 9521.684796][   T10]      netlink_unicast+0x449/0x710
[ 9521.684796][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9521.684796][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9521.684796][   T10]      ___sys_sendmsg+0xee/0x170
[ 9521.684796][   T10]      __sys_sendmsg+0xcd/0x170
[ 9521.684796][   T10]      do_syscall_64+0xc6/0x1e0
[ 9521.684796][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9521.684796][   T10] 
[ 9531.398731][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9531.399249][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9531.399249][T12167]      netdev_get_by_index+0x5e/0x80
[ 9531.399249][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9531.399249][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9531.399249][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9531.399249][T12167]      ipv6_add_addr+0x411/0x2000
[ 9531.399249][T12167]      inet6_addr_add+0x30e/0xa40
[ 9531.399249][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9531.399249][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.399249][T12167]      netlink_rcv_skb+0x130/0x360
[ 9531.399249][T12167]      netlink_unicast+0x449/0x710
[ 9531.399249][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9531.399249][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.399249][T12167]      ___sys_sendmsg+0xee/0x170
[ 9531.399249][T12167]      __sys_sendmsg+0xcd/0x170
[ 9531.399249][T12167]      do_syscall_64+0xc6/0x1e0
[ 9531.399249][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.399249][T12167] 
[ 9531.401532][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9531.401532][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9531.401532][T12167]      ipv6_find_idev+0x102/0x170
[ 9531.401532][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9531.401532][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.401532][T12167]      netlink_rcv_skb+0x130/0x360
[ 9531.401532][T12167]      netlink_unicast+0x449/0x710
[ 9531.401532][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9531.401532][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.401532][T12167]      ___sys_sendmsg+0xee/0x170
[ 9531.401532][T12167]      __sys_sendmsg+0xcd/0x170
[ 9531.401532][T12167]      do_syscall_64+0xc6/0x1e0
[ 9531.401532][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.401532][T12167] 
[ 9531.403270][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9531.403270][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9531.403270][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9531.403270][T12167]      ipv6_find_idev+0x102/0x170
[ 9531.403270][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9531.403270][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.403270][T12167]      netlink_rcv_skb+0x130/0x360
[ 9531.403270][T12167]      netlink_unicast+0x449/0x710
[ 9531.403270][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9531.403270][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.403270][T12167]      ___sys_sendmsg+0xee/0x170
[ 9531.403270][T12167]      __sys_sendmsg+0xcd/0x170
[ 9531.403270][T12167]      do_syscall_64+0xc6/0x1e0
[ 9531.403270][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.403270][T12167] 
[ 9531.926801][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9531.927263][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9531.927263][   T10]      dst_init+0x84/0x4a0
[ 9531.927263][   T10]      dst_alloc+0x97/0x150
[ 9531.927263][   T10]      ip6_dst_alloc+0x23/0x90
[ 9531.927263][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9531.927263][   T10]      ip6_pol_route+0x56f/0x840
[ 9531.927263][   T10]      fib6_rule_lookup+0x334/0x630
[ 9531.927263][   T10]      ip6_route_output_flags+0x259/0x480
[ 9531.927263][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9531.927263][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9531.927263][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9531.927263][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9531.927263][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.927263][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.927263][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.927263][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.927263][   T10] 
[ 9531.929176][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.929176][   T10]      dst_init+0x84/0x4a0
[ 9531.929176][   T10]      dst_alloc+0x97/0x150
[ 9531.929176][   T10]      ip6_dst_alloc+0x23/0x90
[ 9531.929176][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9531.929176][   T10]      ip6_pol_route+0x56f/0x840
[ 9531.929176][   T10]      fib6_rule_lookup+0x334/0x630
[ 9531.929176][   T10]      ip6_route_output_flags+0x259/0x480
[ 9531.929176][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9531.929176][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9531.929176][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9531.929176][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9531.929176][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9531.929176][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.929176][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.929176][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.929176][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.929176][   T10] 
[ 9531.931207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.931207][   T10]      dst_init+0x84/0x4a0
[ 9531.931207][   T10]      dst_alloc+0x97/0x150
[ 9531.931207][   T10]      ip6_dst_alloc+0x23/0x90
[ 9531.931207][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9531.931207][   T10]      ip6_pol_route+0x56f/0x840
[ 9531.931207][   T10]      fib6_rule_lookup+0x334/0x630
[ 9531.931207][   T10]      ip6_route_output_flags+0x259/0x480
[ 9531.931207][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9531.931207][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9531.931207][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9531.931207][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9531.931207][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9531.931207][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.931207][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.931207][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.931207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.931207][   T10] 
[ 9531.933222][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.933222][   T10]      netdev_get_by_index+0x5e/0x80
[ 9531.933222][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9531.933222][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9531.933222][   T10]      ip6_route_add+0x1c/0x140
[ 9531.933222][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9531.933222][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9531.933222][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9531.933222][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.933222][   T10]      netlink_rcv_skb+0x130/0x360
[ 9531.933222][   T10]      netlink_unicast+0x449/0x710
[ 9531.933222][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9531.933222][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.933222][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.933222][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.933222][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.933222][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.933222][   T10] 
[ 9531.935237][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.935237][   T10]      netdev_get_by_index+0x5e/0x80
[ 9531.935237][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9531.935237][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9531.935237][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9531.935237][   T10]      ipv6_add_addr+0x411/0x2000
[ 9531.935237][   T10]      inet6_addr_add+0x30e/0xa40
[ 9531.935237][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9531.935237][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.935237][   T10]      netlink_rcv_skb+0x130/0x360
[ 9531.935237][   T10]      netlink_unicast+0x449/0x710
[ 9531.935237][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9531.935237][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.935237][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.935237][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.935237][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.935237][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.935237][   T10] 
[ 9531.937244][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.937244][   T10]      netdev_get_by_index+0x5e/0x80
[ 9531.937244][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9531.937244][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9531.937244][   T10]      ip6_route_add+0x1c/0x140
[ 9531.937244][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9531.937244][   T10]      addrconf_add_dev+0xe2/0x170
[ 9531.937244][   T10]      inet6_addr_add+0x12f/0xa40
[ 9531.937244][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9531.937244][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.937244][   T10]      netlink_rcv_skb+0x130/0x360
[ 9531.937244][   T10]      netlink_unicast+0x449/0x710
[ 9531.937244][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9531.937244][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.937244][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.937244][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.937244][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.937244][   T10] 
[ 9531.939219][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.939219][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9531.939219][   T10]      ipv6_find_idev+0x102/0x170
[ 9531.939219][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9531.939219][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.939219][   T10]      netlink_rcv_skb+0x130/0x360
[ 9531.939219][   T10]      netlink_unicast+0x449/0x710
[ 9531.939219][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9531.939219][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.939219][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.939219][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.939219][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.939219][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.939219][   T10] 
[ 9531.940763][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9531.940763][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9531.940763][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9531.940763][   T10]      ipv6_find_idev+0x102/0x170
[ 9531.940763][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9531.940763][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9531.940763][   T10]      netlink_rcv_skb+0x130/0x360
[ 9531.940763][   T10]      netlink_unicast+0x449/0x710
[ 9531.940763][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9531.940763][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9531.940763][   T10]      ___sys_sendmsg+0xee/0x170
[ 9531.940763][   T10]      __sys_sendmsg+0xcd/0x170
[ 9531.940763][   T10]      do_syscall_64+0xc6/0x1e0
[ 9531.940763][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9531.940763][   T10] 
[ 9541.646751][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9541.647262][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9541.647262][T12167]      netdev_get_by_index+0x5e/0x80
[ 9541.647262][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9541.647262][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9541.647262][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9541.647262][T12167]      ipv6_add_addr+0x411/0x2000
[ 9541.647262][T12167]      inet6_addr_add+0x30e/0xa40
[ 9541.647262][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9541.647262][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9541.647262][T12167]      netlink_rcv_skb+0x130/0x360
[ 9541.647262][T12167]      netlink_unicast+0x449/0x710
[ 9541.647262][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9541.647262][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9541.647262][T12167]      ___sys_sendmsg+0xee/0x170
[ 9541.647262][T12167]      __sys_sendmsg+0xcd/0x170
[ 9541.647262][T12167]      do_syscall_64+0xc6/0x1e0
[ 9541.647262][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9541.647262][T12167] 
[ 9541.649564][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9541.649564][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9541.649564][T12167]      ipv6_find_idev+0x102/0x170
[ 9541.649564][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9541.649564][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9541.649564][T12167]      netlink_rcv_skb+0x130/0x360
[ 9541.649564][T12167]      netlink_unicast+0x449/0x710
[ 9541.649564][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9541.649564][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9541.649564][T12167]      ___sys_sendmsg+0xee/0x170
[ 9541.649564][T12167]      __sys_sendmsg+0xcd/0x170
[ 9541.649564][T12167]      do_syscall_64+0xc6/0x1e0
[ 9541.649564][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9541.649564][T12167] 
[ 9541.651316][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9541.651316][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9541.651316][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9541.651316][T12167]      ipv6_find_idev+0x102/0x170
[ 9541.651316][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9541.651316][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9541.651316][T12167]      netlink_rcv_skb+0x130/0x360
[ 9541.651316][T12167]      netlink_unicast+0x449/0x710
[ 9541.651316][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9541.651316][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9541.651316][T12167]      ___sys_sendmsg+0xee/0x170
[ 9541.651316][T12167]      __sys_sendmsg+0xcd/0x170
[ 9541.651316][T12167]      do_syscall_64+0xc6/0x1e0
[ 9541.651316][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9541.651316][T12167] 
[ 9542.182798][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9542.183617][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9542.183617][   T10]      dst_init+0x84/0x4a0
[ 9542.183617][   T10]      dst_alloc+0x97/0x150
[ 9542.183617][   T10]      ip6_dst_alloc+0x23/0x90
[ 9542.183617][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9542.183617][   T10]      ip6_pol_route+0x56f/0x840
[ 9542.183617][   T10]      fib6_rule_lookup+0x334/0x630
[ 9542.183617][   T10]      ip6_route_output_flags+0x259/0x480
[ 9542.183617][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9542.183617][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9542.183617][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9542.183617][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9542.183617][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.183617][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.183617][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.183617][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.183617][   T10] 
[ 9542.185530][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.185530][   T10]      dst_init+0x84/0x4a0
[ 9542.185530][   T10]      dst_alloc+0x97/0x150
[ 9542.185530][   T10]      ip6_dst_alloc+0x23/0x90
[ 9542.185530][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9542.185530][   T10]      ip6_pol_route+0x56f/0x840
[ 9542.185530][   T10]      fib6_rule_lookup+0x334/0x630
[ 9542.185530][   T10]      ip6_route_output_flags+0x259/0x480
[ 9542.185530][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9542.185530][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9542.185530][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9542.185530][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9542.185530][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9542.185530][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.185530][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.185530][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.185530][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.185530][   T10] 
[ 9542.187555][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.187555][   T10]      dst_init+0x84/0x4a0
[ 9542.187555][   T10]      dst_alloc+0x97/0x150
[ 9542.187555][   T10]      ip6_dst_alloc+0x23/0x90
[ 9542.187555][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9542.187555][   T10]      ip6_pol_route+0x56f/0x840
[ 9542.187555][   T10]      fib6_rule_lookup+0x334/0x630
[ 9542.187555][   T10]      ip6_route_output_flags+0x259/0x480
[ 9542.187555][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9542.187555][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9542.187555][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9542.187555][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9542.187555][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9542.187555][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.187555][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.187555][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.187555][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.187555][   T10] 
[ 9542.189563][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.189563][   T10]      netdev_get_by_index+0x5e/0x80
[ 9542.189563][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9542.189563][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9542.189563][   T10]      ip6_route_add+0x1c/0x140
[ 9542.189563][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9542.189563][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9542.189563][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9542.189563][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9542.189563][   T10]      netlink_rcv_skb+0x130/0x360
[ 9542.189563][   T10]      netlink_unicast+0x449/0x710
[ 9542.189563][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9542.189563][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9542.189563][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.189563][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.189563][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.189563][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.189563][   T10] 
[ 9542.191582][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.191582][   T10]      netdev_get_by_index+0x5e/0x80
[ 9542.191582][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9542.191582][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9542.191582][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9542.191582][   T10]      ipv6_add_addr+0x411/0x2000
[ 9542.191582][   T10]      inet6_addr_add+0x30e/0xa40
[ 9542.191582][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9542.191582][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9542.191582][   T10]      netlink_rcv_skb+0x130/0x360
[ 9542.191582][   T10]      netlink_unicast+0x449/0x710
[ 9542.191582][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9542.191582][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9542.191582][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.191582][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.191582][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.191582][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.191582][   T10] 
[ 9542.193583][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.193583][   T10]      netdev_get_by_index+0x5e/0x80
[ 9542.193583][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9542.193583][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9542.193583][   T10]      ip6_route_add+0x1c/0x140
[ 9542.193583][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9542.193583][   T10]      addrconf_add_dev+0xe2/0x170
[ 9542.193583][   T10]      inet6_addr_add+0x12f/0xa40
[ 9542.193583][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9542.193583][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9542.193583][   T10]      netlink_rcv_skb+0x130/0x360
[ 9542.193583][   T10]      netlink_unicast+0x449/0x710
[ 9542.193583][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9542.193583][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9542.193583][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.193583][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.193583][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.193583][   T10] 
[ 9542.195556][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.195556][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9542.195556][   T10]      ipv6_find_idev+0x102/0x170
[ 9542.195556][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9542.195556][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9542.195556][   T10]      netlink_rcv_skb+0x130/0x360
[ 9542.195556][   T10]      netlink_unicast+0x449/0x710
[ 9542.195556][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9542.195556][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9542.195556][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.195556][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.195556][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.195556][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.195556][   T10] 
[ 9542.197104][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9542.197104][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9542.197104][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9542.197104][   T10]      ipv6_find_idev+0x102/0x170
[ 9542.197104][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9542.197104][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9542.197104][   T10]      netlink_rcv_skb+0x130/0x360
[ 9542.197104][   T10]      netlink_unicast+0x449/0x710
[ 9542.197104][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9542.197104][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9542.197104][   T10]      ___sys_sendmsg+0xee/0x170
[ 9542.197104][   T10]      __sys_sendmsg+0xcd/0x170
[ 9542.197104][   T10]      do_syscall_64+0xc6/0x1e0
[ 9542.197104][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9542.197104][   T10] 
[ 9551.894789][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9551.895246][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9551.895246][T12167]      netdev_get_by_index+0x5e/0x80
[ 9551.895246][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9551.895246][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9551.895246][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9551.895246][T12167]      ipv6_add_addr+0x411/0x2000
[ 9551.895246][T12167]      inet6_addr_add+0x30e/0xa40
[ 9551.895246][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9551.895246][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9551.895246][T12167]      netlink_rcv_skb+0x130/0x360
[ 9551.895246][T12167]      netlink_unicast+0x449/0x710
[ 9551.895246][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9551.895246][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9551.895246][T12167]      ___sys_sendmsg+0xee/0x170
[ 9551.895246][T12167]      __sys_sendmsg+0xcd/0x170
[ 9551.895246][T12167]      do_syscall_64+0xc6/0x1e0
[ 9551.895246][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9551.895246][T12167] 
[ 9551.897588][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9551.897588][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9551.897588][T12167]      ipv6_find_idev+0x102/0x170
[ 9551.897588][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9551.897588][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9551.897588][T12167]      netlink_rcv_skb+0x130/0x360
[ 9551.897588][T12167]      netlink_unicast+0x449/0x710
[ 9551.897588][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9551.897588][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9551.897588][T12167]      ___sys_sendmsg+0xee/0x170
[ 9551.897588][T12167]      __sys_sendmsg+0xcd/0x170
[ 9551.897588][T12167]      do_syscall_64+0xc6/0x1e0
[ 9551.897588][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9551.897588][T12167] 
[ 9551.899327][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9551.899327][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9551.899327][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9551.899327][T12167]      ipv6_find_idev+0x102/0x170
[ 9551.899327][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9551.899327][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9551.899327][T12167]      netlink_rcv_skb+0x130/0x360
[ 9551.899327][T12167]      netlink_unicast+0x449/0x710
[ 9551.899327][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9551.899327][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9551.899327][T12167]      ___sys_sendmsg+0xee/0x170
[ 9551.899327][T12167]      __sys_sendmsg+0xcd/0x170
[ 9551.899327][T12167]      do_syscall_64+0xc6/0x1e0
[ 9551.899327][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9551.899327][T12167] 
[ 9552.438803][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9552.439205][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9552.439205][   T10]      dst_init+0x84/0x4a0
[ 9552.439205][   T10]      dst_alloc+0x97/0x150
[ 9552.439205][   T10]      ip6_dst_alloc+0x23/0x90
[ 9552.439205][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9552.439205][   T10]      ip6_pol_route+0x56f/0x840
[ 9552.439205][   T10]      fib6_rule_lookup+0x334/0x630
[ 9552.439205][   T10]      ip6_route_output_flags+0x259/0x480
[ 9552.439205][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9552.439205][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9552.439205][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9552.439205][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9552.439205][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.439205][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.439205][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.439205][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.439205][   T10] 
[ 9552.441131][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.441131][   T10]      dst_init+0x84/0x4a0
[ 9552.441131][   T10]      dst_alloc+0x97/0x150
[ 9552.441131][   T10]      ip6_dst_alloc+0x23/0x90
[ 9552.441131][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9552.441131][   T10]      ip6_pol_route+0x56f/0x840
[ 9552.441131][   T10]      fib6_rule_lookup+0x334/0x630
[ 9552.441131][   T10]      ip6_route_output_flags+0x259/0x480
[ 9552.441131][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9552.441131][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9552.441131][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9552.441131][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9552.441131][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9552.441131][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.441131][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.441131][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.441131][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.441131][   T10] 
[ 9552.443149][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.443149][   T10]      dst_init+0x84/0x4a0
[ 9552.443149][   T10]      dst_alloc+0x97/0x150
[ 9552.443149][   T10]      ip6_dst_alloc+0x23/0x90
[ 9552.443149][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9552.443149][   T10]      ip6_pol_route+0x56f/0x840
[ 9552.443149][   T10]      fib6_rule_lookup+0x334/0x630
[ 9552.443149][   T10]      ip6_route_output_flags+0x259/0x480
[ 9552.443149][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9552.443149][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9552.443149][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9552.443149][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9552.443149][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9552.443149][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.443149][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.443149][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.443149][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.443149][   T10] 
[ 9552.445160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.445160][   T10]      netdev_get_by_index+0x5e/0x80
[ 9552.445160][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9552.445160][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9552.445160][   T10]      ip6_route_add+0x1c/0x140
[ 9552.445160][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9552.445160][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9552.445160][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9552.445160][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9552.445160][   T10]      netlink_rcv_skb+0x130/0x360
[ 9552.445160][   T10]      netlink_unicast+0x449/0x710
[ 9552.445160][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9552.445160][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9552.445160][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.445160][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.445160][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.445160][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.445160][   T10] 
[ 9552.447167][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.447167][   T10]      netdev_get_by_index+0x5e/0x80
[ 9552.447167][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9552.447167][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9552.447167][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9552.447167][   T10]      ipv6_add_addr+0x411/0x2000
[ 9552.447167][   T10]      inet6_addr_add+0x30e/0xa40
[ 9552.447167][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9552.447167][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9552.447167][   T10]      netlink_rcv_skb+0x130/0x360
[ 9552.447167][   T10]      netlink_unicast+0x449/0x710
[ 9552.447167][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9552.447167][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9552.447167][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.447167][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.447167][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.447167][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.447167][   T10] 
[ 9552.449180][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.449180][   T10]      netdev_get_by_index+0x5e/0x80
[ 9552.449180][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9552.449180][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9552.449180][   T10]      ip6_route_add+0x1c/0x140
[ 9552.449180][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9552.449180][   T10]      addrconf_add_dev+0xe2/0x170
[ 9552.449180][   T10]      inet6_addr_add+0x12f/0xa40
[ 9552.449180][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9552.449180][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9552.449180][   T10]      netlink_rcv_skb+0x130/0x360
[ 9552.449180][   T10]      netlink_unicast+0x449/0x710
[ 9552.449180][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9552.449180][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9552.449180][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.449180][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.449180][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.449180][   T10] 
[ 9552.451258][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.451258][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9552.451258][   T10]      ipv6_find_idev+0x102/0x170
[ 9552.451258][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9552.451258][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9552.451258][   T10]      netlink_rcv_skb+0x130/0x360
[ 9552.451258][   T10]      netlink_unicast+0x449/0x710
[ 9552.451258][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9552.451258][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9552.451258][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.451258][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.451258][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.451258][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.451258][   T10] 
[ 9552.452806][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9552.452806][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9552.452806][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9552.452806][   T10]      ipv6_find_idev+0x102/0x170
[ 9552.452806][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9552.452806][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9552.452806][   T10]      netlink_rcv_skb+0x130/0x360
[ 9552.452806][   T10]      netlink_unicast+0x449/0x710
[ 9552.452806][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9552.452806][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9552.452806][   T10]      ___sys_sendmsg+0xee/0x170
[ 9552.452806][   T10]      __sys_sendmsg+0xcd/0x170
[ 9552.452806][   T10]      do_syscall_64+0xc6/0x1e0
[ 9552.452806][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9552.452806][   T10] 
[ 9562.150832][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9562.151290][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9562.151290][T12167]      netdev_get_by_index+0x5e/0x80
[ 9562.151290][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9562.151290][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9562.151290][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9562.151290][T12167]      ipv6_add_addr+0x411/0x2000
[ 9562.151290][T12167]      inet6_addr_add+0x30e/0xa40
[ 9562.151290][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9562.151290][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.151290][T12167]      netlink_rcv_skb+0x130/0x360
[ 9562.151290][T12167]      netlink_unicast+0x449/0x710
[ 9562.151290][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9562.151290][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.151290][T12167]      ___sys_sendmsg+0xee/0x170
[ 9562.151290][T12167]      __sys_sendmsg+0xcd/0x170
[ 9562.151290][T12167]      do_syscall_64+0xc6/0x1e0
[ 9562.151290][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.151290][T12167] 
[ 9562.153568][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9562.153568][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9562.153568][T12167]      ipv6_find_idev+0x102/0x170
[ 9562.153568][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9562.153568][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.153568][T12167]      netlink_rcv_skb+0x130/0x360
[ 9562.153568][T12167]      netlink_unicast+0x449/0x710
[ 9562.153568][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9562.153568][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.153568][T12167]      ___sys_sendmsg+0xee/0x170
[ 9562.153568][T12167]      __sys_sendmsg+0xcd/0x170
[ 9562.153568][T12167]      do_syscall_64+0xc6/0x1e0
[ 9562.153568][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.153568][T12167] 
[ 9562.155306][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9562.155306][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9562.155306][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9562.155306][T12167]      ipv6_find_idev+0x102/0x170
[ 9562.155306][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9562.155306][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.155306][T12167]      netlink_rcv_skb+0x130/0x360
[ 9562.155306][T12167]      netlink_unicast+0x449/0x710
[ 9562.155306][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9562.155306][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.155306][T12167]      ___sys_sendmsg+0xee/0x170
[ 9562.155306][T12167]      __sys_sendmsg+0xcd/0x170
[ 9562.155306][T12167]      do_syscall_64+0xc6/0x1e0
[ 9562.155306][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.155306][T12167] 
[ 9562.694726][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9562.695179][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9562.695179][   T10]      dst_init+0x84/0x4a0
[ 9562.695179][   T10]      dst_alloc+0x97/0x150
[ 9562.695179][   T10]      ip6_dst_alloc+0x23/0x90
[ 9562.695179][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9562.695179][   T10]      ip6_pol_route+0x56f/0x840
[ 9562.695179][   T10]      fib6_rule_lookup+0x334/0x630
[ 9562.695179][   T10]      ip6_route_output_flags+0x259/0x480
[ 9562.695179][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9562.695179][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9562.695179][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9562.695179][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9562.695179][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.695179][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.695179][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.695179][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.695179][   T10] 
[ 9562.697107][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.697107][   T10]      dst_init+0x84/0x4a0
[ 9562.697107][   T10]      dst_alloc+0x97/0x150
[ 9562.697107][   T10]      ip6_dst_alloc+0x23/0x90
[ 9562.697107][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9562.697107][   T10]      ip6_pol_route+0x56f/0x840
[ 9562.697107][   T10]      fib6_rule_lookup+0x334/0x630
[ 9562.697107][   T10]      ip6_route_output_flags+0x259/0x480
[ 9562.697107][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9562.697107][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9562.697107][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9562.697107][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9562.697107][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9562.697107][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.697107][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.697107][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.697107][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.697107][   T10] 
[ 9562.699139][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.699139][   T10]      dst_init+0x84/0x4a0
[ 9562.699139][   T10]      dst_alloc+0x97/0x150
[ 9562.699139][   T10]      ip6_dst_alloc+0x23/0x90
[ 9562.699139][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9562.699139][   T10]      ip6_pol_route+0x56f/0x840
[ 9562.699139][   T10]      fib6_rule_lookup+0x334/0x630
[ 9562.699139][   T10]      ip6_route_output_flags+0x259/0x480
[ 9562.699139][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9562.699139][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9562.699139][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9562.699139][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9562.699139][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9562.699139][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.699139][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.699139][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.699139][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.699139][   T10] 
[ 9562.701168][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.701168][   T10]      netdev_get_by_index+0x5e/0x80
[ 9562.701168][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9562.701168][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9562.701168][   T10]      ip6_route_add+0x1c/0x140
[ 9562.701168][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9562.701168][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9562.701168][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9562.701168][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.701168][   T10]      netlink_rcv_skb+0x130/0x360
[ 9562.701168][   T10]      netlink_unicast+0x449/0x710
[ 9562.701168][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9562.701168][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.701168][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.701168][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.701168][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.701168][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.701168][   T10] 
[ 9562.703188][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.703188][   T10]      netdev_get_by_index+0x5e/0x80
[ 9562.703188][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9562.703188][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9562.703188][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9562.703188][   T10]      ipv6_add_addr+0x411/0x2000
[ 9562.703188][   T10]      inet6_addr_add+0x30e/0xa40
[ 9562.703188][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9562.703188][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.703188][   T10]      netlink_rcv_skb+0x130/0x360
[ 9562.703188][   T10]      netlink_unicast+0x449/0x710
[ 9562.703188][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9562.703188][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.703188][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.703188][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.703188][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.703188][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.703188][   T10] 
[ 9562.705201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.705201][   T10]      netdev_get_by_index+0x5e/0x80
[ 9562.705201][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9562.705201][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9562.705201][   T10]      ip6_route_add+0x1c/0x140
[ 9562.705201][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9562.705201][   T10]      addrconf_add_dev+0xe2/0x170
[ 9562.705201][   T10]      inet6_addr_add+0x12f/0xa40
[ 9562.705201][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9562.705201][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.705201][   T10]      netlink_rcv_skb+0x130/0x360
[ 9562.705201][   T10]      netlink_unicast+0x449/0x710
[ 9562.705201][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9562.705201][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.705201][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.705201][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.705201][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.705201][   T10] 
[ 9562.707181][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.707181][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9562.707181][   T10]      ipv6_find_idev+0x102/0x170
[ 9562.707181][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9562.707181][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.707181][   T10]      netlink_rcv_skb+0x130/0x360
[ 9562.707181][   T10]      netlink_unicast+0x449/0x710
[ 9562.707181][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9562.707181][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.707181][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.707181][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.707181][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.707181][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.707181][   T10] 
[ 9562.708727][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9562.708727][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9562.708727][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9562.708727][   T10]      ipv6_find_idev+0x102/0x170
[ 9562.708727][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9562.708727][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9562.708727][   T10]      netlink_rcv_skb+0x130/0x360
[ 9562.708727][   T10]      netlink_unicast+0x449/0x710
[ 9562.708727][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9562.708727][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9562.708727][   T10]      ___sys_sendmsg+0xee/0x170
[ 9562.708727][   T10]      __sys_sendmsg+0xcd/0x170
[ 9562.708727][   T10]      do_syscall_64+0xc6/0x1e0
[ 9562.708727][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9562.708727][   T10] 
[ 9572.406823][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9572.407263][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9572.407263][T12167]      netdev_get_by_index+0x5e/0x80
[ 9572.407263][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9572.407263][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9572.407263][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9572.407263][T12167]      ipv6_add_addr+0x411/0x2000
[ 9572.407263][T12167]      inet6_addr_add+0x30e/0xa40
[ 9572.407263][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9572.407263][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.407263][T12167]      netlink_rcv_skb+0x130/0x360
[ 9572.407263][T12167]      netlink_unicast+0x449/0x710
[ 9572.407263][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9572.407263][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.407263][T12167]      ___sys_sendmsg+0xee/0x170
[ 9572.407263][T12167]      __sys_sendmsg+0xcd/0x170
[ 9572.407263][T12167]      do_syscall_64+0xc6/0x1e0
[ 9572.407263][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.407263][T12167] 
[ 9572.409571][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9572.409571][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9572.409571][T12167]      ipv6_find_idev+0x102/0x170
[ 9572.409571][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9572.409571][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.409571][T12167]      netlink_rcv_skb+0x130/0x360
[ 9572.409571][T12167]      netlink_unicast+0x449/0x710
[ 9572.409571][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9572.409571][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.409571][T12167]      ___sys_sendmsg+0xee/0x170
[ 9572.409571][T12167]      __sys_sendmsg+0xcd/0x170
[ 9572.409571][T12167]      do_syscall_64+0xc6/0x1e0
[ 9572.409571][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.409571][T12167] 
[ 9572.411336][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9572.411336][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9572.411336][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9572.411336][T12167]      ipv6_find_idev+0x102/0x170
[ 9572.411336][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9572.411336][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.411336][T12167]      netlink_rcv_skb+0x130/0x360
[ 9572.411336][T12167]      netlink_unicast+0x449/0x710
[ 9572.411336][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9572.411336][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.411336][T12167]      ___sys_sendmsg+0xee/0x170
[ 9572.411336][T12167]      __sys_sendmsg+0xcd/0x170
[ 9572.411336][T12167]      do_syscall_64+0xc6/0x1e0
[ 9572.411336][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.411336][T12167] 
[ 9572.950764][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9572.951154][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9572.951154][   T10]      dst_init+0x84/0x4a0
[ 9572.951154][   T10]      dst_alloc+0x97/0x150
[ 9572.951154][   T10]      ip6_dst_alloc+0x23/0x90
[ 9572.951154][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9572.951154][   T10]      ip6_pol_route+0x56f/0x840
[ 9572.951154][   T10]      fib6_rule_lookup+0x334/0x630
[ 9572.951154][   T10]      ip6_route_output_flags+0x259/0x480
[ 9572.951154][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9572.951154][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9572.951154][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9572.951154][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9572.951154][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.951154][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.951154][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.951154][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.951154][   T10] 
[ 9572.953074][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.953074][   T10]      dst_init+0x84/0x4a0
[ 9572.953074][   T10]      dst_alloc+0x97/0x150
[ 9572.953074][   T10]      ip6_dst_alloc+0x23/0x90
[ 9572.953074][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9572.953074][   T10]      ip6_pol_route+0x56f/0x840
[ 9572.953074][   T10]      fib6_rule_lookup+0x334/0x630
[ 9572.953074][   T10]      ip6_route_output_flags+0x259/0x480
[ 9572.953074][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9572.953074][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9572.953074][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9572.953074][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9572.953074][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9572.953074][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.953074][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.953074][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.953074][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.953074][   T10] 
[ 9572.955078][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.955078][   T10]      dst_init+0x84/0x4a0
[ 9572.955078][   T10]      dst_alloc+0x97/0x150
[ 9572.955078][   T10]      ip6_dst_alloc+0x23/0x90
[ 9572.955078][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9572.955078][   T10]      ip6_pol_route+0x56f/0x840
[ 9572.955078][   T10]      fib6_rule_lookup+0x334/0x630
[ 9572.955078][   T10]      ip6_route_output_flags+0x259/0x480
[ 9572.955078][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9572.955078][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9572.955078][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9572.955078][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9572.955078][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9572.955078][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.955078][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.955078][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.955078][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.955078][   T10] 
[ 9572.957087][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.957087][   T10]      netdev_get_by_index+0x5e/0x80
[ 9572.957087][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9572.957087][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9572.957087][   T10]      ip6_route_add+0x1c/0x140
[ 9572.957087][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9572.957087][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9572.957087][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9572.957087][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.957087][   T10]      netlink_rcv_skb+0x130/0x360
[ 9572.957087][   T10]      netlink_unicast+0x449/0x710
[ 9572.957087][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9572.957087][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.957087][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.957087][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.957087][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.957087][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.957087][   T10] 
[ 9572.959097][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.959097][   T10]      netdev_get_by_index+0x5e/0x80
[ 9572.959097][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9572.959097][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9572.959097][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9572.959097][   T10]      ipv6_add_addr+0x411/0x2000
[ 9572.959097][   T10]      inet6_addr_add+0x30e/0xa40
[ 9572.959097][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9572.959097][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.959097][   T10]      netlink_rcv_skb+0x130/0x360
[ 9572.959097][   T10]      netlink_unicast+0x449/0x710
[ 9572.959097][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9572.959097][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.959097][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.959097][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.959097][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.959097][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.959097][   T10] 
[ 9572.961105][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.961105][   T10]      netdev_get_by_index+0x5e/0x80
[ 9572.961105][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9572.961105][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9572.961105][   T10]      ip6_route_add+0x1c/0x140
[ 9572.961105][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9572.961105][   T10]      addrconf_add_dev+0xe2/0x170
[ 9572.961105][   T10]      inet6_addr_add+0x12f/0xa40
[ 9572.961105][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9572.961105][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.961105][   T10]      netlink_rcv_skb+0x130/0x360
[ 9572.961105][   T10]      netlink_unicast+0x449/0x710
[ 9572.961105][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9572.961105][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.961105][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.961105][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.961105][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.961105][   T10] 
[ 9572.963062][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.963062][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9572.963062][   T10]      ipv6_find_idev+0x102/0x170
[ 9572.963062][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9572.963062][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.963062][   T10]      netlink_rcv_skb+0x130/0x360
[ 9572.963062][   T10]      netlink_unicast+0x449/0x710
[ 9572.963062][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9572.963062][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.963062][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.963062][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.963062][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.963062][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.963062][   T10] 
[ 9572.964606][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9572.964606][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9572.964606][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9572.964606][   T10]      ipv6_find_idev+0x102/0x170
[ 9572.964606][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9572.964606][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9572.964606][   T10]      netlink_rcv_skb+0x130/0x360
[ 9572.964606][   T10]      netlink_unicast+0x449/0x710
[ 9572.964606][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9572.964606][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9572.964606][   T10]      ___sys_sendmsg+0xee/0x170
[ 9572.964606][   T10]      __sys_sendmsg+0xcd/0x170
[ 9572.964606][   T10]      do_syscall_64+0xc6/0x1e0
[ 9572.964606][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9572.964606][   T10] 
[ 9582.654805][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9582.655262][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9582.655262][T12167]      netdev_get_by_index+0x5e/0x80
[ 9582.655262][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9582.655262][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9582.655262][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9582.655262][T12167]      ipv6_add_addr+0x411/0x2000
[ 9582.655262][T12167]      inet6_addr_add+0x30e/0xa40
[ 9582.655262][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9582.655262][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9582.655262][T12167]      netlink_rcv_skb+0x130/0x360
[ 9582.655262][T12167]      netlink_unicast+0x449/0x710
[ 9582.655262][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9582.655262][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9582.655262][T12167]      ___sys_sendmsg+0xee/0x170
[ 9582.655262][T12167]      __sys_sendmsg+0xcd/0x170
[ 9582.655262][T12167]      do_syscall_64+0xc6/0x1e0
[ 9582.655262][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9582.655262][T12167] 
[ 9582.657572][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9582.657572][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9582.657572][T12167]      ipv6_find_idev+0x102/0x170
[ 9582.657572][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9582.657572][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9582.657572][T12167]      netlink_rcv_skb+0x130/0x360
[ 9582.657572][T12167]      netlink_unicast+0x449/0x710
[ 9582.657572][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9582.657572][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9582.657572][T12167]      ___sys_sendmsg+0xee/0x170
[ 9582.657572][T12167]      __sys_sendmsg+0xcd/0x170
[ 9582.657572][T12167]      do_syscall_64+0xc6/0x1e0
[ 9582.657572][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9582.657572][T12167] 
[ 9582.659315][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9582.659315][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9582.659315][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9582.659315][T12167]      ipv6_find_idev+0x102/0x170
[ 9582.659315][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9582.659315][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9582.659315][T12167]      netlink_rcv_skb+0x130/0x360
[ 9582.659315][T12167]      netlink_unicast+0x449/0x710
[ 9582.659315][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9582.659315][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9582.659315][T12167]      ___sys_sendmsg+0xee/0x170
[ 9582.659315][T12167]      __sys_sendmsg+0xcd/0x170
[ 9582.659315][T12167]      do_syscall_64+0xc6/0x1e0
[ 9582.659315][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9582.659315][T12167] 
[ 9583.214726][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9583.215121][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9583.215121][   T10]      dst_init+0x84/0x4a0
[ 9583.215121][   T10]      dst_alloc+0x97/0x150
[ 9583.215121][   T10]      ip6_dst_alloc+0x23/0x90
[ 9583.215121][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9583.215121][   T10]      ip6_pol_route+0x56f/0x840
[ 9583.215121][   T10]      fib6_rule_lookup+0x334/0x630
[ 9583.215121][   T10]      ip6_route_output_flags+0x259/0x480
[ 9583.215121][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9583.215121][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9583.215121][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9583.215121][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9583.215121][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.215121][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.215121][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.215121][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.215121][   T10] 
[ 9583.217115][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.217115][   T10]      dst_init+0x84/0x4a0
[ 9583.217115][   T10]      dst_alloc+0x97/0x150
[ 9583.217115][   T10]      ip6_dst_alloc+0x23/0x90
[ 9583.217115][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9583.217115][   T10]      ip6_pol_route+0x56f/0x840
[ 9583.217115][   T10]      fib6_rule_lookup+0x334/0x630
[ 9583.217115][   T10]      ip6_route_output_flags+0x259/0x480
[ 9583.217115][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9583.217115][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9583.217115][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9583.217115][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9583.217115][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9583.217115][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.217115][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.217115][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.217115][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.217115][   T10] 
[ 9583.219125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.219125][   T10]      dst_init+0x84/0x4a0
[ 9583.219125][   T10]      dst_alloc+0x97/0x150
[ 9583.219125][   T10]      ip6_dst_alloc+0x23/0x90
[ 9583.219125][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9583.219125][   T10]      ip6_pol_route+0x56f/0x840
[ 9583.219125][   T10]      fib6_rule_lookup+0x334/0x630
[ 9583.219125][   T10]      ip6_route_output_flags+0x259/0x480
[ 9583.219125][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9583.219125][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9583.219125][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9583.219125][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9583.219125][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9583.219125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.219125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.219125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.219125][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.219125][   T10] 
[ 9583.221139][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.221139][   T10]      netdev_get_by_index+0x5e/0x80
[ 9583.221139][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9583.221139][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9583.221139][   T10]      ip6_route_add+0x1c/0x140
[ 9583.221139][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9583.221139][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9583.221139][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9583.221139][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9583.221139][   T10]      netlink_rcv_skb+0x130/0x360
[ 9583.221139][   T10]      netlink_unicast+0x449/0x710
[ 9583.221139][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9583.221139][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9583.221139][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.221139][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.221139][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.221139][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.221139][   T10] 
[ 9583.223148][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.223148][   T10]      netdev_get_by_index+0x5e/0x80
[ 9583.223148][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9583.223148][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9583.223148][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9583.223148][   T10]      ipv6_add_addr+0x411/0x2000
[ 9583.223148][   T10]      inet6_addr_add+0x30e/0xa40
[ 9583.223148][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9583.223148][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9583.223148][   T10]      netlink_rcv_skb+0x130/0x360
[ 9583.223148][   T10]      netlink_unicast+0x449/0x710
[ 9583.223148][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9583.223148][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9583.223148][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.223148][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.223148][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.223148][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.223148][   T10] 
[ 9583.225167][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.225167][   T10]      netdev_get_by_index+0x5e/0x80
[ 9583.225167][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9583.225167][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9583.225167][   T10]      ip6_route_add+0x1c/0x140
[ 9583.225167][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9583.225167][   T10]      addrconf_add_dev+0xe2/0x170
[ 9583.225167][   T10]      inet6_addr_add+0x12f/0xa40
[ 9583.225167][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9583.225167][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9583.225167][   T10]      netlink_rcv_skb+0x130/0x360
[ 9583.225167][   T10]      netlink_unicast+0x449/0x710
[ 9583.225167][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9583.225167][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9583.225167][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.225167][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.225167][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.225167][   T10] 
[ 9583.227135][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.227135][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9583.227135][   T10]      ipv6_find_idev+0x102/0x170
[ 9583.227135][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9583.227135][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9583.227135][   T10]      netlink_rcv_skb+0x130/0x360
[ 9583.227135][   T10]      netlink_unicast+0x449/0x710
[ 9583.227135][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9583.227135][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9583.227135][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.227135][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.227135][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.227135][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.227135][   T10] 
[ 9583.228684][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9583.228684][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9583.228684][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9583.228684][   T10]      ipv6_find_idev+0x102/0x170
[ 9583.228684][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9583.228684][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9583.228684][   T10]      netlink_rcv_skb+0x130/0x360
[ 9583.228684][   T10]      netlink_unicast+0x449/0x710
[ 9583.228684][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9583.228684][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9583.228684][   T10]      ___sys_sendmsg+0xee/0x170
[ 9583.228684][   T10]      __sys_sendmsg+0xcd/0x170
[ 9583.228684][   T10]      do_syscall_64+0xc6/0x1e0
[ 9583.228684][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9583.228684][   T10] 
[ 9585.958820][   T42] INFO: task modprobe:12646 blocked for more than 860 seconds.
[ 9585.959121][   T42]       Not tainted 6.8.0-virtme #1
[ 9585.959240][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9585.959439][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9585.959729][   T42] Call Trace:
[ 9585.959825][   T42]  <TASK>
[ 9585.959898][   T42]  __schedule+0x705/0x1ac0
[ 9585.960035][   T42]  ? __pfx___schedule+0x10/0x10
[ 9585.960159][   T42]  ? schedule+0x1a5/0x210
[ 9585.960256][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9585.960389][   T42]  ? mark_lock+0x38/0x3e0
[ 9585.960483][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9585.960609][   T42]  ? schedule+0x1a5/0x210
[ 9585.960728][   T42]  schedule+0xdf/0x210
[ 9585.960825][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9585.960952][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9585.961084][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9585.961240][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9585.961364][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9585.961494][   T42]  ? lock_acquire+0x1c1/0x220
[ 9585.961618][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9585.961758][   T42]  down_write+0x1c9/0x200
[ 9585.961854][   T42]  ? __pfx_down_write+0x10/0x10
[ 9585.961979][   T42]  ? __pfx__printk+0x10/0x10
[ 9585.962110][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9585.962238][   T42]  register_pernet_subsys+0x1a/0x50
[ 9585.962361][   T42]  tcf_register_action+0xa3/0x600
[ 9585.962487][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9585.962646][   T42]  do_one_initcall+0xc8/0x3f0
[ 9585.962781][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9585.962910][   T42]  ? __create_object+0x5e/0xb0
[ 9585.963041][   T42]  ? kasan_unpoison+0x27/0x60
[ 9585.963169][   T42]  do_init_module+0x233/0x740
[ 9585.963304][   T42]  load_module+0x16b5/0x2350
[ 9585.963439][   T42]  ? __pfx_load_module+0x10/0x10
[ 9585.963562][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9585.963705][   T42]  ? kernel_read_file+0x300/0x520
[ 9585.963834][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9585.963964][   T42]  ? init_module_from_file+0xd2/0x130
[ 9585.964090][   T42]  init_module_from_file+0xd2/0x130
[ 9585.964213][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9585.964367][   T42]  ? __lock_release+0x103/0x460
[ 9585.964491][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9585.964625][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9585.964768][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9585.964897][   T42]  idempotent_init_module+0x342/0x620
[ 9585.965023][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9585.965196][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9585.965325][   T42]  do_syscall_64+0xc6/0x1e0
[ 9585.965452][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9585.965606][   T42] RIP: 0033:0x7fac120f1e5d
[ 9585.965741][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9585.965926][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9585.966115][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9585.966295][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9585.966476][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9585.966657][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9585.966870][   T42]  </TASK>
[ 9585.966964][   T42] 
[ 9585.966964][   T42] Showing all locks held in the system:
[ 9585.967145][   T42] 3 locks held by kworker/u16:0/10:
[ 9585.967265][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9585.967514][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9585.967743][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9585.967965][   T42] 1 lock held by khungtaskd/42:
[ 9585.968082][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9585.968301][   T42] 2 locks held by kworker/u17:1/44:
[ 9585.968422][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9585.968668][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9585.968957][   T42] 1 lock held by modprobe/12646:
[ 9585.969074][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9585.969322][   T42] 
[ 9585.969383][   T42] =============================================
[ 9585.969383][   T42] 
[ 9592.902797][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9592.903255][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9592.903255][T12167]      netdev_get_by_index+0x5e/0x80
[ 9592.903255][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9592.903255][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9592.903255][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9592.903255][T12167]      ipv6_add_addr+0x411/0x2000
[ 9592.903255][T12167]      inet6_addr_add+0x30e/0xa40
[ 9592.903255][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9592.903255][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9592.903255][T12167]      netlink_rcv_skb+0x130/0x360
[ 9592.903255][T12167]      netlink_unicast+0x449/0x710
[ 9592.903255][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9592.903255][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9592.903255][T12167]      ___sys_sendmsg+0xee/0x170
[ 9592.903255][T12167]      __sys_sendmsg+0xcd/0x170
[ 9592.903255][T12167]      do_syscall_64+0xc6/0x1e0
[ 9592.903255][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9592.903255][T12167] 
[ 9592.905538][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9592.905538][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9592.905538][T12167]      ipv6_find_idev+0x102/0x170
[ 9592.905538][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9592.905538][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9592.905538][T12167]      netlink_rcv_skb+0x130/0x360
[ 9592.905538][T12167]      netlink_unicast+0x449/0x710
[ 9592.905538][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9592.905538][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9592.905538][T12167]      ___sys_sendmsg+0xee/0x170
[ 9592.905538][T12167]      __sys_sendmsg+0xcd/0x170
[ 9592.905538][T12167]      do_syscall_64+0xc6/0x1e0
[ 9592.905538][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9592.905538][T12167] 
[ 9592.907287][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9592.907287][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9592.907287][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9592.907287][T12167]      ipv6_find_idev+0x102/0x170
[ 9592.907287][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9592.907287][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9592.907287][T12167]      netlink_rcv_skb+0x130/0x360
[ 9592.907287][T12167]      netlink_unicast+0x449/0x710
[ 9592.907287][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9592.907287][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9592.907287][T12167]      ___sys_sendmsg+0xee/0x170
[ 9592.907287][T12167]      __sys_sendmsg+0xcd/0x170
[ 9592.907287][T12167]      do_syscall_64+0xc6/0x1e0
[ 9592.907287][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9592.907287][T12167] 
[ 9593.470805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9593.471269][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9593.471269][   T10]      dst_init+0x84/0x4a0
[ 9593.471269][   T10]      dst_alloc+0x97/0x150
[ 9593.471269][   T10]      ip6_dst_alloc+0x23/0x90
[ 9593.471269][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9593.471269][   T10]      ip6_pol_route+0x56f/0x840
[ 9593.471269][   T10]      fib6_rule_lookup+0x334/0x630
[ 9593.471269][   T10]      ip6_route_output_flags+0x259/0x480
[ 9593.471269][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9593.471269][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9593.471269][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9593.471269][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9593.471269][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.471269][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.471269][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.471269][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.471269][   T10] 
[ 9593.473183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.473183][   T10]      dst_init+0x84/0x4a0
[ 9593.473183][   T10]      dst_alloc+0x97/0x150
[ 9593.473183][   T10]      ip6_dst_alloc+0x23/0x90
[ 9593.473183][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9593.473183][   T10]      ip6_pol_route+0x56f/0x840
[ 9593.473183][   T10]      fib6_rule_lookup+0x334/0x630
[ 9593.473183][   T10]      ip6_route_output_flags+0x259/0x480
[ 9593.473183][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9593.473183][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9593.473183][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9593.473183][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9593.473183][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9593.473183][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.473183][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.473183][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.473183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.473183][   T10] 
[ 9593.475201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.475201][   T10]      dst_init+0x84/0x4a0
[ 9593.475201][   T10]      dst_alloc+0x97/0x150
[ 9593.475201][   T10]      ip6_dst_alloc+0x23/0x90
[ 9593.475201][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9593.475201][   T10]      ip6_pol_route+0x56f/0x840
[ 9593.475201][   T10]      fib6_rule_lookup+0x334/0x630
[ 9593.475201][   T10]      ip6_route_output_flags+0x259/0x480
[ 9593.475201][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9593.475201][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9593.475201][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9593.475201][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9593.475201][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9593.475201][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.475201][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.475201][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.475201][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.475201][   T10] 
[ 9593.477212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.477212][   T10]      netdev_get_by_index+0x5e/0x80
[ 9593.477212][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9593.477212][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9593.477212][   T10]      ip6_route_add+0x1c/0x140
[ 9593.477212][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9593.477212][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9593.477212][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9593.477212][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9593.477212][   T10]      netlink_rcv_skb+0x130/0x360
[ 9593.477212][   T10]      netlink_unicast+0x449/0x710
[ 9593.477212][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9593.477212][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9593.477212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.477212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.477212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.477212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.477212][   T10] 
[ 9593.479231][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.479231][   T10]      netdev_get_by_index+0x5e/0x80
[ 9593.479231][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9593.479231][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9593.479231][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9593.479231][   T10]      ipv6_add_addr+0x411/0x2000
[ 9593.479231][   T10]      inet6_addr_add+0x30e/0xa40
[ 9593.479231][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9593.479231][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9593.479231][   T10]      netlink_rcv_skb+0x130/0x360
[ 9593.479231][   T10]      netlink_unicast+0x449/0x710
[ 9593.479231][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9593.479231][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9593.479231][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.479231][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.479231][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.479231][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.479231][   T10] 
[ 9593.481234][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.481234][   T10]      netdev_get_by_index+0x5e/0x80
[ 9593.481234][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9593.481234][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9593.481234][   T10]      ip6_route_add+0x1c/0x140
[ 9593.481234][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9593.481234][   T10]      addrconf_add_dev+0xe2/0x170
[ 9593.481234][   T10]      inet6_addr_add+0x12f/0xa40
[ 9593.481234][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9593.481234][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9593.481234][   T10]      netlink_rcv_skb+0x130/0x360
[ 9593.481234][   T10]      netlink_unicast+0x449/0x710
[ 9593.481234][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9593.481234][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9593.481234][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.481234][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.481234][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.481234][   T10] 
[ 9593.483198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.483198][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9593.483198][   T10]      ipv6_find_idev+0x102/0x170
[ 9593.483198][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9593.483198][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9593.483198][   T10]      netlink_rcv_skb+0x130/0x360
[ 9593.483198][   T10]      netlink_unicast+0x449/0x710
[ 9593.483198][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9593.483198][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9593.483198][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.483198][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.483198][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.483198][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.483198][   T10] 
[ 9593.484735][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9593.484735][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9593.484735][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9593.484735][   T10]      ipv6_find_idev+0x102/0x170
[ 9593.484735][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9593.484735][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9593.484735][   T10]      netlink_rcv_skb+0x130/0x360
[ 9593.484735][   T10]      netlink_unicast+0x449/0x710
[ 9593.484735][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9593.484735][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9593.484735][   T10]      ___sys_sendmsg+0xee/0x170
[ 9593.484735][   T10]      __sys_sendmsg+0xcd/0x170
[ 9593.484735][   T10]      do_syscall_64+0xc6/0x1e0
[ 9593.484735][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9593.484735][   T10] 
[ 9603.150797][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9603.151233][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9603.151233][T12167]      netdev_get_by_index+0x5e/0x80
[ 9603.151233][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9603.151233][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9603.151233][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9603.151233][T12167]      ipv6_add_addr+0x411/0x2000
[ 9603.151233][T12167]      inet6_addr_add+0x30e/0xa40
[ 9603.151233][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9603.151233][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.151233][T12167]      netlink_rcv_skb+0x130/0x360
[ 9603.151233][T12167]      netlink_unicast+0x449/0x710
[ 9603.151233][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9603.151233][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.151233][T12167]      ___sys_sendmsg+0xee/0x170
[ 9603.151233][T12167]      __sys_sendmsg+0xcd/0x170
[ 9603.151233][T12167]      do_syscall_64+0xc6/0x1e0
[ 9603.151233][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.151233][T12167] 
[ 9603.153552][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9603.153552][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9603.153552][T12167]      ipv6_find_idev+0x102/0x170
[ 9603.153552][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9603.153552][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.153552][T12167]      netlink_rcv_skb+0x130/0x360
[ 9603.153552][T12167]      netlink_unicast+0x449/0x710
[ 9603.153552][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9603.153552][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.153552][T12167]      ___sys_sendmsg+0xee/0x170
[ 9603.153552][T12167]      __sys_sendmsg+0xcd/0x170
[ 9603.153552][T12167]      do_syscall_64+0xc6/0x1e0
[ 9603.153552][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.153552][T12167] 
[ 9603.155290][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9603.155290][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9603.155290][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9603.155290][T12167]      ipv6_find_idev+0x102/0x170
[ 9603.155290][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9603.155290][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.155290][T12167]      netlink_rcv_skb+0x130/0x360
[ 9603.155290][T12167]      netlink_unicast+0x449/0x710
[ 9603.155290][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9603.155290][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.155290][T12167]      ___sys_sendmsg+0xee/0x170
[ 9603.155290][T12167]      __sys_sendmsg+0xcd/0x170
[ 9603.155290][T12167]      do_syscall_64+0xc6/0x1e0
[ 9603.155290][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.155290][T12167] 
[ 9603.838881][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9603.839755][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9603.839755][   T10]      dst_init+0x84/0x4a0
[ 9603.839755][   T10]      dst_alloc+0x97/0x150
[ 9603.839755][   T10]      ip6_dst_alloc+0x23/0x90
[ 9603.839755][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9603.839755][   T10]      ip6_pol_route+0x56f/0x840
[ 9603.839755][   T10]      fib6_rule_lookup+0x334/0x630
[ 9603.839755][   T10]      ip6_route_output_flags+0x259/0x480
[ 9603.839755][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9603.839755][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9603.839755][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9603.839755][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9603.839755][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.839755][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.839755][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.839755][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.839755][   T10] 
[ 9603.841720][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.841720][   T10]      dst_init+0x84/0x4a0
[ 9603.841720][   T10]      dst_alloc+0x97/0x150
[ 9603.841720][   T10]      ip6_dst_alloc+0x23/0x90
[ 9603.841720][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9603.841720][   T10]      ip6_pol_route+0x56f/0x840
[ 9603.841720][   T10]      fib6_rule_lookup+0x334/0x630
[ 9603.841720][   T10]      ip6_route_output_flags+0x259/0x480
[ 9603.841720][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9603.841720][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9603.841720][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9603.841720][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9603.841720][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9603.841720][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.841720][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.841720][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.841720][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.841720][   T10] 
[ 9603.843748][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.843748][   T10]      dst_init+0x84/0x4a0
[ 9603.843748][   T10]      dst_alloc+0x97/0x150
[ 9603.843748][   T10]      ip6_dst_alloc+0x23/0x90
[ 9603.843748][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9603.843748][   T10]      ip6_pol_route+0x56f/0x840
[ 9603.843748][   T10]      fib6_rule_lookup+0x334/0x630
[ 9603.843748][   T10]      ip6_route_output_flags+0x259/0x480
[ 9603.843748][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9603.843748][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9603.843748][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9603.843748][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9603.843748][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9603.843748][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.843748][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.843748][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.843748][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.843748][   T10] 
[ 9603.845780][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.845780][   T10]      netdev_get_by_index+0x5e/0x80
[ 9603.845780][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9603.845780][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9603.845780][   T10]      ip6_route_add+0x1c/0x140
[ 9603.845780][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9603.845780][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9603.845780][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9603.845780][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.845780][   T10]      netlink_rcv_skb+0x130/0x360
[ 9603.845780][   T10]      netlink_unicast+0x449/0x710
[ 9603.845780][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9603.845780][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.845780][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.845780][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.845780][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.845780][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.845780][   T10] 
[ 9603.847816][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.847816][   T10]      netdev_get_by_index+0x5e/0x80
[ 9603.847816][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9603.847816][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9603.847816][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9603.847816][   T10]      ipv6_add_addr+0x411/0x2000
[ 9603.847816][   T10]      inet6_addr_add+0x30e/0xa40
[ 9603.847816][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9603.847816][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.847816][   T10]      netlink_rcv_skb+0x130/0x360
[ 9603.847816][   T10]      netlink_unicast+0x449/0x710
[ 9603.847816][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9603.847816][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.847816][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.847816][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.847816][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.847816][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.847816][   T10] 
[ 9603.849857][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.849857][   T10]      netdev_get_by_index+0x5e/0x80
[ 9603.849857][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9603.849857][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9603.849857][   T10]      ip6_route_add+0x1c/0x140
[ 9603.849857][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9603.849857][   T10]      addrconf_add_dev+0xe2/0x170
[ 9603.849857][   T10]      inet6_addr_add+0x12f/0xa40
[ 9603.849857][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9603.849857][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.849857][   T10]      netlink_rcv_skb+0x130/0x360
[ 9603.849857][   T10]      netlink_unicast+0x449/0x710
[ 9603.849857][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9603.849857][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.849857][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.849857][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.849857][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.849857][   T10] 
[ 9603.851859][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.851859][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9603.851859][   T10]      ipv6_find_idev+0x102/0x170
[ 9603.851859][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9603.851859][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.851859][   T10]      netlink_rcv_skb+0x130/0x360
[ 9603.851859][   T10]      netlink_unicast+0x449/0x710
[ 9603.851859][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9603.851859][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.851859][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.851859][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.851859][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.851859][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.851859][   T10] 
[ 9603.853419][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9603.853419][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9603.853419][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9603.853419][   T10]      ipv6_find_idev+0x102/0x170
[ 9603.853419][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9603.853419][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9603.853419][   T10]      netlink_rcv_skb+0x130/0x360
[ 9603.853419][   T10]      netlink_unicast+0x449/0x710
[ 9603.853419][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9603.853419][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9603.853419][   T10]      ___sys_sendmsg+0xee/0x170
[ 9603.853419][   T10]      __sys_sendmsg+0xcd/0x170
[ 9603.853419][   T10]      do_syscall_64+0xc6/0x1e0
[ 9603.853419][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9603.853419][   T10] 
[ 9613.342874][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9613.343359][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9613.343359][T12167]      netdev_get_by_index+0x5e/0x80
[ 9613.343359][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9613.343359][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9613.343359][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9613.343359][T12167]      ipv6_add_addr+0x411/0x2000
[ 9613.343359][T12167]      inet6_addr_add+0x30e/0xa40
[ 9613.343359][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9613.343359][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9613.343359][T12167]      netlink_rcv_skb+0x130/0x360
[ 9613.343359][T12167]      netlink_unicast+0x449/0x710
[ 9613.343359][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9613.343359][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9613.343359][T12167]      ___sys_sendmsg+0xee/0x170
[ 9613.343359][T12167]      __sys_sendmsg+0xcd/0x170
[ 9613.343359][T12167]      do_syscall_64+0xc6/0x1e0
[ 9613.343359][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9613.343359][T12167] 
[ 9613.345645][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9613.345645][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9613.345645][T12167]      ipv6_find_idev+0x102/0x170
[ 9613.345645][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9613.345645][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9613.345645][T12167]      netlink_rcv_skb+0x130/0x360
[ 9613.345645][T12167]      netlink_unicast+0x449/0x710
[ 9613.345645][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9613.345645][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9613.345645][T12167]      ___sys_sendmsg+0xee/0x170
[ 9613.345645][T12167]      __sys_sendmsg+0xcd/0x170
[ 9613.345645][T12167]      do_syscall_64+0xc6/0x1e0
[ 9613.345645][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9613.345645][T12167] 
[ 9613.347386][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9613.347386][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9613.347386][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9613.347386][T12167]      ipv6_find_idev+0x102/0x170
[ 9613.347386][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9613.347386][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9613.347386][T12167]      netlink_rcv_skb+0x130/0x360
[ 9613.347386][T12167]      netlink_unicast+0x449/0x710
[ 9613.347386][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9613.347386][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9613.347386][T12167]      ___sys_sendmsg+0xee/0x170
[ 9613.347386][T12167]      __sys_sendmsg+0xcd/0x170
[ 9613.347386][T12167]      do_syscall_64+0xc6/0x1e0
[ 9613.347386][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9613.347386][T12167] 
[ 9614.102810][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9614.103303][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9614.103303][   T10]      dst_init+0x84/0x4a0
[ 9614.103303][   T10]      dst_alloc+0x97/0x150
[ 9614.103303][   T10]      ip6_dst_alloc+0x23/0x90
[ 9614.103303][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9614.103303][   T10]      ip6_pol_route+0x56f/0x840
[ 9614.103303][   T10]      fib6_rule_lookup+0x334/0x630
[ 9614.103303][   T10]      ip6_route_output_flags+0x259/0x480
[ 9614.103303][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9614.103303][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9614.103303][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9614.103303][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9614.103303][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.103303][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.103303][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.103303][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.103303][   T10] 
[ 9614.105230][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.105230][   T10]      dst_init+0x84/0x4a0
[ 9614.105230][   T10]      dst_alloc+0x97/0x150
[ 9614.105230][   T10]      ip6_dst_alloc+0x23/0x90
[ 9614.105230][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9614.105230][   T10]      ip6_pol_route+0x56f/0x840
[ 9614.105230][   T10]      fib6_rule_lookup+0x334/0x630
[ 9614.105230][   T10]      ip6_route_output_flags+0x259/0x480
[ 9614.105230][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9614.105230][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9614.105230][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9614.105230][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9614.105230][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9614.105230][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.105230][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.105230][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.105230][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.105230][   T10] 
[ 9614.107261][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.107261][   T10]      dst_init+0x84/0x4a0
[ 9614.107261][   T10]      dst_alloc+0x97/0x150
[ 9614.107261][   T10]      ip6_dst_alloc+0x23/0x90
[ 9614.107261][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9614.107261][   T10]      ip6_pol_route+0x56f/0x840
[ 9614.107261][   T10]      fib6_rule_lookup+0x334/0x630
[ 9614.107261][   T10]      ip6_route_output_flags+0x259/0x480
[ 9614.107261][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9614.107261][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9614.107261][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9614.107261][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9614.107261][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9614.107261][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.107261][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.107261][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.107261][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.107261][   T10] 
[ 9614.109293][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.109293][   T10]      netdev_get_by_index+0x5e/0x80
[ 9614.109293][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9614.109293][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9614.109293][   T10]      ip6_route_add+0x1c/0x140
[ 9614.109293][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9614.109293][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9614.109293][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9614.109293][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9614.109293][   T10]      netlink_rcv_skb+0x130/0x360
[ 9614.109293][   T10]      netlink_unicast+0x449/0x710
[ 9614.109293][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9614.109293][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9614.109293][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.109293][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.109293][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.109293][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.109293][   T10] 
[ 9614.111355][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.111355][   T10]      netdev_get_by_index+0x5e/0x80
[ 9614.111355][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9614.111355][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9614.111355][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9614.111355][   T10]      ipv6_add_addr+0x411/0x2000
[ 9614.111355][   T10]      inet6_addr_add+0x30e/0xa40
[ 9614.111355][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9614.111355][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9614.111355][   T10]      netlink_rcv_skb+0x130/0x360
[ 9614.111355][   T10]      netlink_unicast+0x449/0x710
[ 9614.111355][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9614.111355][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9614.111355][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.111355][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.111355][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.111355][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.111355][   T10] 
[ 9614.113385][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.113385][   T10]      netdev_get_by_index+0x5e/0x80
[ 9614.113385][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9614.113385][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9614.113385][   T10]      ip6_route_add+0x1c/0x140
[ 9614.113385][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9614.113385][   T10]      addrconf_add_dev+0xe2/0x170
[ 9614.113385][   T10]      inet6_addr_add+0x12f/0xa40
[ 9614.113385][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9614.113385][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9614.113385][   T10]      netlink_rcv_skb+0x130/0x360
[ 9614.113385][   T10]      netlink_unicast+0x449/0x710
[ 9614.113385][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9614.113385][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9614.113385][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.113385][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.113385][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.113385][   T10] 
[ 9614.115378][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.115378][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9614.115378][   T10]      ipv6_find_idev+0x102/0x170
[ 9614.115378][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9614.115378][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9614.115378][   T10]      netlink_rcv_skb+0x130/0x360
[ 9614.115378][   T10]      netlink_unicast+0x449/0x710
[ 9614.115378][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9614.115378][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9614.115378][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.115378][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.115378][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.115378][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.115378][   T10] 
[ 9614.116944][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9614.116944][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9614.116944][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9614.116944][   T10]      ipv6_find_idev+0x102/0x170
[ 9614.116944][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9614.116944][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9614.116944][   T10]      netlink_rcv_skb+0x130/0x360
[ 9614.116944][   T10]      netlink_unicast+0x449/0x710
[ 9614.116944][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9614.116944][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9614.116944][   T10]      ___sys_sendmsg+0xee/0x170
[ 9614.116944][   T10]      __sys_sendmsg+0xcd/0x170
[ 9614.116944][   T10]      do_syscall_64+0xc6/0x1e0
[ 9614.116944][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9614.116944][   T10] 
[ 9623.350802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9623.351298][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9623.351298][T12167]      netdev_get_by_index+0x5e/0x80
[ 9623.351298][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9623.351298][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9623.351298][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9623.351298][T12167]      ipv6_add_addr+0x411/0x2000
[ 9623.351298][T12167]      inet6_addr_add+0x30e/0xa40
[ 9623.351298][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9623.351298][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9623.351298][T12167]      netlink_rcv_skb+0x130/0x360
[ 9623.351298][T12167]      netlink_unicast+0x449/0x710
[ 9623.351298][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9623.351298][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9623.351298][T12167]      ___sys_sendmsg+0xee/0x170
[ 9623.351298][T12167]      __sys_sendmsg+0xcd/0x170
[ 9623.351298][T12167]      do_syscall_64+0xc6/0x1e0
[ 9623.351298][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9623.351298][T12167] 
[ 9623.353567][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9623.353567][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9623.353567][T12167]      ipv6_find_idev+0x102/0x170
[ 9623.353567][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9623.353567][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9623.353567][T12167]      netlink_rcv_skb+0x130/0x360
[ 9623.353567][T12167]      netlink_unicast+0x449/0x710
[ 9623.353567][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9623.353567][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9623.353567][T12167]      ___sys_sendmsg+0xee/0x170
[ 9623.353567][T12167]      __sys_sendmsg+0xcd/0x170
[ 9623.353567][T12167]      do_syscall_64+0xc6/0x1e0
[ 9623.353567][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9623.353567][T12167] 
[ 9623.355302][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9623.355302][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9623.355302][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9623.355302][T12167]      ipv6_find_idev+0x102/0x170
[ 9623.355302][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9623.355302][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9623.355302][T12167]      netlink_rcv_skb+0x130/0x360
[ 9623.355302][T12167]      netlink_unicast+0x449/0x710
[ 9623.355302][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9623.355302][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9623.355302][T12167]      ___sys_sendmsg+0xee/0x170
[ 9623.355302][T12167]      __sys_sendmsg+0xcd/0x170
[ 9623.355302][T12167]      do_syscall_64+0xc6/0x1e0
[ 9623.355302][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9623.355302][T12167] 
[ 9624.118778][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9624.119248][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9624.119248][   T10]      dst_init+0x84/0x4a0
[ 9624.119248][   T10]      dst_alloc+0x97/0x150
[ 9624.119248][   T10]      ip6_dst_alloc+0x23/0x90
[ 9624.119248][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9624.119248][   T10]      ip6_pol_route+0x56f/0x840
[ 9624.119248][   T10]      fib6_rule_lookup+0x334/0x630
[ 9624.119248][   T10]      ip6_route_output_flags+0x259/0x480
[ 9624.119248][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9624.119248][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9624.119248][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9624.119248][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9624.119248][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.119248][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.119248][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.119248][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.119248][   T10] 
[ 9624.121183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.121183][   T10]      dst_init+0x84/0x4a0
[ 9624.121183][   T10]      dst_alloc+0x97/0x150
[ 9624.121183][   T10]      ip6_dst_alloc+0x23/0x90
[ 9624.121183][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9624.121183][   T10]      ip6_pol_route+0x56f/0x840
[ 9624.121183][   T10]      fib6_rule_lookup+0x334/0x630
[ 9624.121183][   T10]      ip6_route_output_flags+0x259/0x480
[ 9624.121183][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9624.121183][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9624.121183][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9624.121183][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9624.121183][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9624.121183][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.121183][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.121183][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.121183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.121183][   T10] 
[ 9624.123192][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.123192][   T10]      dst_init+0x84/0x4a0
[ 9624.123192][   T10]      dst_alloc+0x97/0x150
[ 9624.123192][   T10]      ip6_dst_alloc+0x23/0x90
[ 9624.123192][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9624.123192][   T10]      ip6_pol_route+0x56f/0x840
[ 9624.123192][   T10]      fib6_rule_lookup+0x334/0x630
[ 9624.123192][   T10]      ip6_route_output_flags+0x259/0x480
[ 9624.123192][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9624.123192][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9624.123192][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9624.123192][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9624.123192][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9624.123192][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.123192][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.123192][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.123192][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.123192][   T10] 
[ 9624.125194][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.125194][   T10]      netdev_get_by_index+0x5e/0x80
[ 9624.125194][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9624.125194][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9624.125194][   T10]      ip6_route_add+0x1c/0x140
[ 9624.125194][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9624.125194][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9624.125194][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9624.125194][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9624.125194][   T10]      netlink_rcv_skb+0x130/0x360
[ 9624.125194][   T10]      netlink_unicast+0x449/0x710
[ 9624.125194][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9624.125194][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9624.125194][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.125194][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.125194][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.125194][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.125194][   T10] 
[ 9624.127207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.127207][   T10]      netdev_get_by_index+0x5e/0x80
[ 9624.127207][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9624.127207][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9624.127207][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9624.127207][   T10]      ipv6_add_addr+0x411/0x2000
[ 9624.127207][   T10]      inet6_addr_add+0x30e/0xa40
[ 9624.127207][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9624.127207][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9624.127207][   T10]      netlink_rcv_skb+0x130/0x360
[ 9624.127207][   T10]      netlink_unicast+0x449/0x710
[ 9624.127207][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9624.127207][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9624.127207][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.127207][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.127207][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.127207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.127207][   T10] 
[ 9624.129221][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.129221][   T10]      netdev_get_by_index+0x5e/0x80
[ 9624.129221][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9624.129221][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9624.129221][   T10]      ip6_route_add+0x1c/0x140
[ 9624.129221][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9624.129221][   T10]      addrconf_add_dev+0xe2/0x170
[ 9624.129221][   T10]      inet6_addr_add+0x12f/0xa40
[ 9624.129221][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9624.129221][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9624.129221][   T10]      netlink_rcv_skb+0x130/0x360
[ 9624.129221][   T10]      netlink_unicast+0x449/0x710
[ 9624.129221][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9624.129221][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9624.129221][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.129221][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.129221][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.129221][   T10] 
[ 9624.131200][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.131200][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9624.131200][   T10]      ipv6_find_idev+0x102/0x170
[ 9624.131200][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9624.131200][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9624.131200][   T10]      netlink_rcv_skb+0x130/0x360
[ 9624.131200][   T10]      netlink_unicast+0x449/0x710
[ 9624.131200][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9624.131200][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9624.131200][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.131200][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.131200][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.131200][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.131200][   T10] 
[ 9624.132747][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9624.132747][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9624.132747][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9624.132747][   T10]      ipv6_find_idev+0x102/0x170
[ 9624.132747][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9624.132747][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9624.132747][   T10]      netlink_rcv_skb+0x130/0x360
[ 9624.132747][   T10]      netlink_unicast+0x449/0x710
[ 9624.132747][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9624.132747][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9624.132747][   T10]      ___sys_sendmsg+0xee/0x170
[ 9624.132747][   T10]      __sys_sendmsg+0xcd/0x170
[ 9624.132747][   T10]      do_syscall_64+0xc6/0x1e0
[ 9624.132747][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9624.132747][   T10] 
[ 9633.606875][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9633.607367][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9633.607367][T12167]      netdev_get_by_index+0x5e/0x80
[ 9633.607367][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9633.607367][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9633.607367][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9633.607367][T12167]      ipv6_add_addr+0x411/0x2000
[ 9633.607367][T12167]      inet6_addr_add+0x30e/0xa40
[ 9633.607367][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9633.607367][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9633.607367][T12167]      netlink_rcv_skb+0x130/0x360
[ 9633.607367][T12167]      netlink_unicast+0x449/0x710
[ 9633.607367][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9633.607367][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9633.607367][T12167]      ___sys_sendmsg+0xee/0x170
[ 9633.607367][T12167]      __sys_sendmsg+0xcd/0x170
[ 9633.607367][T12167]      do_syscall_64+0xc6/0x1e0
[ 9633.607367][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9633.607367][T12167] 
[ 9633.609662][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9633.609662][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9633.609662][T12167]      ipv6_find_idev+0x102/0x170
[ 9633.609662][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9633.609662][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9633.609662][T12167]      netlink_rcv_skb+0x130/0x360
[ 9633.609662][T12167]      netlink_unicast+0x449/0x710
[ 9633.609662][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9633.609662][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9633.609662][T12167]      ___sys_sendmsg+0xee/0x170
[ 9633.609662][T12167]      __sys_sendmsg+0xcd/0x170
[ 9633.609662][T12167]      do_syscall_64+0xc6/0x1e0
[ 9633.609662][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9633.609662][T12167] 
[ 9633.611427][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9633.611427][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9633.611427][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9633.611427][T12167]      ipv6_find_idev+0x102/0x170
[ 9633.611427][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9633.611427][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9633.611427][T12167]      netlink_rcv_skb+0x130/0x360
[ 9633.611427][T12167]      netlink_unicast+0x449/0x710
[ 9633.611427][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9633.611427][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9633.611427][T12167]      ___sys_sendmsg+0xee/0x170
[ 9633.611427][T12167]      __sys_sendmsg+0xcd/0x170
[ 9633.611427][T12167]      do_syscall_64+0xc6/0x1e0
[ 9633.611427][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9633.611427][T12167] 
[ 9634.374819][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9634.375303][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9634.375303][   T10]      dst_init+0x84/0x4a0
[ 9634.375303][   T10]      dst_alloc+0x97/0x150
[ 9634.375303][   T10]      ip6_dst_alloc+0x23/0x90
[ 9634.375303][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9634.375303][   T10]      ip6_pol_route+0x56f/0x840
[ 9634.375303][   T10]      fib6_rule_lookup+0x334/0x630
[ 9634.375303][   T10]      ip6_route_output_flags+0x259/0x480
[ 9634.375303][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9634.375303][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9634.375303][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9634.375303][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9634.375303][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.375303][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.375303][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.375303][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.375303][   T10] 
[ 9634.377265][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.377265][   T10]      dst_init+0x84/0x4a0
[ 9634.377265][   T10]      dst_alloc+0x97/0x150
[ 9634.377265][   T10]      ip6_dst_alloc+0x23/0x90
[ 9634.377265][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9634.377265][   T10]      ip6_pol_route+0x56f/0x840
[ 9634.377265][   T10]      fib6_rule_lookup+0x334/0x630
[ 9634.377265][   T10]      ip6_route_output_flags+0x259/0x480
[ 9634.377265][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9634.377265][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9634.377265][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9634.377265][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9634.377265][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9634.377265][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.377265][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.377265][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.377265][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.377265][   T10] 
[ 9634.379305][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.379305][   T10]      dst_init+0x84/0x4a0
[ 9634.379305][   T10]      dst_alloc+0x97/0x150
[ 9634.379305][   T10]      ip6_dst_alloc+0x23/0x90
[ 9634.379305][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9634.379305][   T10]      ip6_pol_route+0x56f/0x840
[ 9634.379305][   T10]      fib6_rule_lookup+0x334/0x630
[ 9634.379305][   T10]      ip6_route_output_flags+0x259/0x480
[ 9634.379305][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9634.379305][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9634.379305][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9634.379305][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9634.379305][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9634.379305][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.379305][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.379305][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.379305][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.379305][   T10] 
[ 9634.381348][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.381348][   T10]      netdev_get_by_index+0x5e/0x80
[ 9634.381348][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9634.381348][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9634.381348][   T10]      ip6_route_add+0x1c/0x140
[ 9634.381348][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9634.381348][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9634.381348][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9634.381348][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9634.381348][   T10]      netlink_rcv_skb+0x130/0x360
[ 9634.381348][   T10]      netlink_unicast+0x449/0x710
[ 9634.381348][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9634.381348][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9634.381348][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.381348][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.381348][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.381348][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.381348][   T10] 
[ 9634.383373][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.383373][   T10]      netdev_get_by_index+0x5e/0x80
[ 9634.383373][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9634.383373][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9634.383373][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9634.383373][   T10]      ipv6_add_addr+0x411/0x2000
[ 9634.383373][   T10]      inet6_addr_add+0x30e/0xa40
[ 9634.383373][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9634.383373][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9634.383373][   T10]      netlink_rcv_skb+0x130/0x360
[ 9634.383373][   T10]      netlink_unicast+0x449/0x710
[ 9634.383373][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9634.383373][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9634.383373][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.383373][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.383373][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.383373][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.383373][   T10] 
[ 9634.385399][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.385399][   T10]      netdev_get_by_index+0x5e/0x80
[ 9634.385399][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9634.385399][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9634.385399][   T10]      ip6_route_add+0x1c/0x140
[ 9634.385399][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9634.385399][   T10]      addrconf_add_dev+0xe2/0x170
[ 9634.385399][   T10]      inet6_addr_add+0x12f/0xa40
[ 9634.385399][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9634.385399][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9634.385399][   T10]      netlink_rcv_skb+0x130/0x360
[ 9634.385399][   T10]      netlink_unicast+0x449/0x710
[ 9634.385399][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9634.385399][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9634.385399][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.385399][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.385399][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.385399][   T10] 
[ 9634.387389][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.387389][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9634.387389][   T10]      ipv6_find_idev+0x102/0x170
[ 9634.387389][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9634.387389][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9634.387389][   T10]      netlink_rcv_skb+0x130/0x360
[ 9634.387389][   T10]      netlink_unicast+0x449/0x710
[ 9634.387389][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9634.387389][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9634.387389][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.387389][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.387389][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.387389][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.387389][   T10] 
[ 9634.388950][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9634.388950][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9634.388950][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9634.388950][   T10]      ipv6_find_idev+0x102/0x170
[ 9634.388950][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9634.388950][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9634.388950][   T10]      netlink_rcv_skb+0x130/0x360
[ 9634.388950][   T10]      netlink_unicast+0x449/0x710
[ 9634.388950][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9634.388950][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9634.388950][   T10]      ___sys_sendmsg+0xee/0x170
[ 9634.388950][   T10]      __sys_sendmsg+0xcd/0x170
[ 9634.388950][   T10]      do_syscall_64+0xc6/0x1e0
[ 9634.388950][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9634.388950][   T10] 
[ 9643.862810][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9643.863270][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9643.863270][T12167]      netdev_get_by_index+0x5e/0x80
[ 9643.863270][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9643.863270][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9643.863270][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9643.863270][T12167]      ipv6_add_addr+0x411/0x2000
[ 9643.863270][T12167]      inet6_addr_add+0x30e/0xa40
[ 9643.863270][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9643.863270][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9643.863270][T12167]      netlink_rcv_skb+0x130/0x360
[ 9643.863270][T12167]      netlink_unicast+0x449/0x710
[ 9643.863270][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9643.863270][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9643.863270][T12167]      ___sys_sendmsg+0xee/0x170
[ 9643.863270][T12167]      __sys_sendmsg+0xcd/0x170
[ 9643.863270][T12167]      do_syscall_64+0xc6/0x1e0
[ 9643.863270][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9643.863270][T12167] 
[ 9643.865605][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9643.865605][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9643.865605][T12167]      ipv6_find_idev+0x102/0x170
[ 9643.865605][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9643.865605][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9643.865605][T12167]      netlink_rcv_skb+0x130/0x360
[ 9643.865605][T12167]      netlink_unicast+0x449/0x710
[ 9643.865605][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9643.865605][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9643.865605][T12167]      ___sys_sendmsg+0xee/0x170
[ 9643.865605][T12167]      __sys_sendmsg+0xcd/0x170
[ 9643.865605][T12167]      do_syscall_64+0xc6/0x1e0
[ 9643.865605][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9643.865605][T12167] 
[ 9643.867380][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9643.867380][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9643.867380][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9643.867380][T12167]      ipv6_find_idev+0x102/0x170
[ 9643.867380][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9643.867380][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9643.867380][T12167]      netlink_rcv_skb+0x130/0x360
[ 9643.867380][T12167]      netlink_unicast+0x449/0x710
[ 9643.867380][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9643.867380][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9643.867380][T12167]      ___sys_sendmsg+0xee/0x170
[ 9643.867380][T12167]      __sys_sendmsg+0xcd/0x170
[ 9643.867380][T12167]      do_syscall_64+0xc6/0x1e0
[ 9643.867380][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9643.867380][T12167] 
[ 9644.638816][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9644.639248][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9644.639248][   T10]      dst_init+0x84/0x4a0
[ 9644.639248][   T10]      dst_alloc+0x97/0x150
[ 9644.639248][   T10]      ip6_dst_alloc+0x23/0x90
[ 9644.639248][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9644.639248][   T10]      ip6_pol_route+0x56f/0x840
[ 9644.639248][   T10]      fib6_rule_lookup+0x334/0x630
[ 9644.639248][   T10]      ip6_route_output_flags+0x259/0x480
[ 9644.639248][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9644.639248][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9644.639248][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9644.639248][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9644.639248][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.639248][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.639248][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.639248][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.639248][   T10] 
[ 9644.641186][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.641186][   T10]      dst_init+0x84/0x4a0
[ 9644.641186][   T10]      dst_alloc+0x97/0x150
[ 9644.641186][   T10]      ip6_dst_alloc+0x23/0x90
[ 9644.641186][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9644.641186][   T10]      ip6_pol_route+0x56f/0x840
[ 9644.641186][   T10]      fib6_rule_lookup+0x334/0x630
[ 9644.641186][   T10]      ip6_route_output_flags+0x259/0x480
[ 9644.641186][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9644.641186][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9644.641186][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9644.641186][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9644.641186][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9644.641186][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.641186][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.641186][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.641186][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.641186][   T10] 
[ 9644.643203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.643203][   T10]      dst_init+0x84/0x4a0
[ 9644.643203][   T10]      dst_alloc+0x97/0x150
[ 9644.643203][   T10]      ip6_dst_alloc+0x23/0x90
[ 9644.643203][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9644.643203][   T10]      ip6_pol_route+0x56f/0x840
[ 9644.643203][   T10]      fib6_rule_lookup+0x334/0x630
[ 9644.643203][   T10]      ip6_route_output_flags+0x259/0x480
[ 9644.643203][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9644.643203][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9644.643203][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9644.643203][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9644.643203][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9644.643203][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.643203][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.643203][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.643203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.643203][   T10] 
[ 9644.645220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.645220][   T10]      netdev_get_by_index+0x5e/0x80
[ 9644.645220][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9644.645220][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9644.645220][   T10]      ip6_route_add+0x1c/0x140
[ 9644.645220][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9644.645220][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9644.645220][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9644.645220][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9644.645220][   T10]      netlink_rcv_skb+0x130/0x360
[ 9644.645220][   T10]      netlink_unicast+0x449/0x710
[ 9644.645220][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9644.645220][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9644.645220][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.645220][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.645220][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.645220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.645220][   T10] 
[ 9644.647224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.647224][   T10]      netdev_get_by_index+0x5e/0x80
[ 9644.647224][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9644.647224][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9644.647224][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9644.647224][   T10]      ipv6_add_addr+0x411/0x2000
[ 9644.647224][   T10]      inet6_addr_add+0x30e/0xa40
[ 9644.647224][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9644.647224][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9644.647224][   T10]      netlink_rcv_skb+0x130/0x360
[ 9644.647224][   T10]      netlink_unicast+0x449/0x710
[ 9644.647224][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9644.647224][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9644.647224][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.647224][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.647224][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.647224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.647224][   T10] 
[ 9644.649230][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.649230][   T10]      netdev_get_by_index+0x5e/0x80
[ 9644.649230][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9644.649230][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9644.649230][   T10]      ip6_route_add+0x1c/0x140
[ 9644.649230][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9644.649230][   T10]      addrconf_add_dev+0xe2/0x170
[ 9644.649230][   T10]      inet6_addr_add+0x12f/0xa40
[ 9644.649230][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9644.649230][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9644.649230][   T10]      netlink_rcv_skb+0x130/0x360
[ 9644.649230][   T10]      netlink_unicast+0x449/0x710
[ 9644.649230][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9644.649230][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9644.649230][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.649230][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.649230][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.649230][   T10] 
[ 9644.651220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.651220][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9644.651220][   T10]      ipv6_find_idev+0x102/0x170
[ 9644.651220][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9644.651220][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9644.651220][   T10]      netlink_rcv_skb+0x130/0x360
[ 9644.651220][   T10]      netlink_unicast+0x449/0x710
[ 9644.651220][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9644.651220][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9644.651220][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.651220][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.651220][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.651220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.651220][   T10] 
[ 9644.652766][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9644.652766][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9644.652766][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9644.652766][   T10]      ipv6_find_idev+0x102/0x170
[ 9644.652766][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9644.652766][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9644.652766][   T10]      netlink_rcv_skb+0x130/0x360
[ 9644.652766][   T10]      netlink_unicast+0x449/0x710
[ 9644.652766][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9644.652766][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9644.652766][   T10]      ___sys_sendmsg+0xee/0x170
[ 9644.652766][   T10]      __sys_sendmsg+0xcd/0x170
[ 9644.652766][   T10]      do_syscall_64+0xc6/0x1e0
[ 9644.652766][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9644.652766][   T10] 
[ 9654.110798][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9654.111312][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9654.111312][T12167]      netdev_get_by_index+0x5e/0x80
[ 9654.111312][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9654.111312][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9654.111312][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9654.111312][T12167]      ipv6_add_addr+0x411/0x2000
[ 9654.111312][T12167]      inet6_addr_add+0x30e/0xa40
[ 9654.111312][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9654.111312][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.111312][T12167]      netlink_rcv_skb+0x130/0x360
[ 9654.111312][T12167]      netlink_unicast+0x449/0x710
[ 9654.111312][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9654.111312][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.111312][T12167]      ___sys_sendmsg+0xee/0x170
[ 9654.111312][T12167]      __sys_sendmsg+0xcd/0x170
[ 9654.111312][T12167]      do_syscall_64+0xc6/0x1e0
[ 9654.111312][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.111312][T12167] 
[ 9654.113630][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9654.113630][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9654.113630][T12167]      ipv6_find_idev+0x102/0x170
[ 9654.113630][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9654.113630][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.113630][T12167]      netlink_rcv_skb+0x130/0x360
[ 9654.113630][T12167]      netlink_unicast+0x449/0x710
[ 9654.113630][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9654.113630][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.113630][T12167]      ___sys_sendmsg+0xee/0x170
[ 9654.113630][T12167]      __sys_sendmsg+0xcd/0x170
[ 9654.113630][T12167]      do_syscall_64+0xc6/0x1e0
[ 9654.113630][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.113630][T12167] 
[ 9654.115383][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9654.115383][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9654.115383][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9654.115383][T12167]      ipv6_find_idev+0x102/0x170
[ 9654.115383][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9654.115383][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.115383][T12167]      netlink_rcv_skb+0x130/0x360
[ 9654.115383][T12167]      netlink_unicast+0x449/0x710
[ 9654.115383][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9654.115383][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.115383][T12167]      ___sys_sendmsg+0xee/0x170
[ 9654.115383][T12167]      __sys_sendmsg+0xcd/0x170
[ 9654.115383][T12167]      do_syscall_64+0xc6/0x1e0
[ 9654.115383][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.115383][T12167] 
[ 9654.894917][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9654.895394][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9654.895394][   T10]      dst_init+0x84/0x4a0
[ 9654.895394][   T10]      dst_alloc+0x97/0x150
[ 9654.895394][   T10]      ip6_dst_alloc+0x23/0x90
[ 9654.895394][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9654.895394][   T10]      ip6_pol_route+0x56f/0x840
[ 9654.895394][   T10]      fib6_rule_lookup+0x334/0x630
[ 9654.895394][   T10]      ip6_route_output_flags+0x259/0x480
[ 9654.895394][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9654.895394][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9654.895394][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9654.895394][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9654.895394][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.895394][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.895394][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.895394][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.895394][   T10] 
[ 9654.897320][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.897320][   T10]      dst_init+0x84/0x4a0
[ 9654.897320][   T10]      dst_alloc+0x97/0x150
[ 9654.897320][   T10]      ip6_dst_alloc+0x23/0x90
[ 9654.897320][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9654.897320][   T10]      ip6_pol_route+0x56f/0x840
[ 9654.897320][   T10]      fib6_rule_lookup+0x334/0x630
[ 9654.897320][   T10]      ip6_route_output_flags+0x259/0x480
[ 9654.897320][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9654.897320][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9654.897320][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9654.897320][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9654.897320][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9654.897320][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.897320][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.897320][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.897320][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.897320][   T10] 
[ 9654.899339][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.899339][   T10]      dst_init+0x84/0x4a0
[ 9654.899339][   T10]      dst_alloc+0x97/0x150
[ 9654.899339][   T10]      ip6_dst_alloc+0x23/0x90
[ 9654.899339][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9654.899339][   T10]      ip6_pol_route+0x56f/0x840
[ 9654.899339][   T10]      fib6_rule_lookup+0x334/0x630
[ 9654.899339][   T10]      ip6_route_output_flags+0x259/0x480
[ 9654.899339][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9654.899339][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9654.899339][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9654.899339][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9654.899339][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9654.899339][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.899339][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.899339][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.899339][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.899339][   T10] 
[ 9654.901368][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.901368][   T10]      netdev_get_by_index+0x5e/0x80
[ 9654.901368][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9654.901368][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9654.901368][   T10]      ip6_route_add+0x1c/0x140
[ 9654.901368][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9654.901368][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9654.901368][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9654.901368][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.901368][   T10]      netlink_rcv_skb+0x130/0x360
[ 9654.901368][   T10]      netlink_unicast+0x449/0x710
[ 9654.901368][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9654.901368][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.901368][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.901368][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.901368][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.901368][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.901368][   T10] 
[ 9654.903377][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.903377][   T10]      netdev_get_by_index+0x5e/0x80
[ 9654.903377][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9654.903377][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9654.903377][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9654.903377][   T10]      ipv6_add_addr+0x411/0x2000
[ 9654.903377][   T10]      inet6_addr_add+0x30e/0xa40
[ 9654.903377][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9654.903377][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.903377][   T10]      netlink_rcv_skb+0x130/0x360
[ 9654.903377][   T10]      netlink_unicast+0x449/0x710
[ 9654.903377][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9654.903377][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.903377][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.903377][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.903377][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.903377][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.903377][   T10] 
[ 9654.905383][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.905383][   T10]      netdev_get_by_index+0x5e/0x80
[ 9654.905383][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9654.905383][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9654.905383][   T10]      ip6_route_add+0x1c/0x140
[ 9654.905383][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9654.905383][   T10]      addrconf_add_dev+0xe2/0x170
[ 9654.905383][   T10]      inet6_addr_add+0x12f/0xa40
[ 9654.905383][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9654.905383][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.905383][   T10]      netlink_rcv_skb+0x130/0x360
[ 9654.905383][   T10]      netlink_unicast+0x449/0x710
[ 9654.905383][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9654.905383][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.905383][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.905383][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.905383][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.905383][   T10] 
[ 9654.907354][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.907354][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9654.907354][   T10]      ipv6_find_idev+0x102/0x170
[ 9654.907354][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9654.907354][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.907354][   T10]      netlink_rcv_skb+0x130/0x360
[ 9654.907354][   T10]      netlink_unicast+0x449/0x710
[ 9654.907354][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9654.907354][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.907354][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.907354][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.907354][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.907354][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.907354][   T10] 
[ 9654.908899][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9654.908899][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9654.908899][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9654.908899][   T10]      ipv6_find_idev+0x102/0x170
[ 9654.908899][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9654.908899][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9654.908899][   T10]      netlink_rcv_skb+0x130/0x360
[ 9654.908899][   T10]      netlink_unicast+0x449/0x710
[ 9654.908899][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9654.908899][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9654.908899][   T10]      ___sys_sendmsg+0xee/0x170
[ 9654.908899][   T10]      __sys_sendmsg+0xcd/0x170
[ 9654.908899][   T10]      do_syscall_64+0xc6/0x1e0
[ 9654.908899][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9654.908899][   T10] 
[ 9664.366813][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9664.367335][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9664.367335][T12167]      netdev_get_by_index+0x5e/0x80
[ 9664.367335][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9664.367335][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9664.367335][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9664.367335][T12167]      ipv6_add_addr+0x411/0x2000
[ 9664.367335][T12167]      inet6_addr_add+0x30e/0xa40
[ 9664.367335][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9664.367335][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9664.367335][T12167]      netlink_rcv_skb+0x130/0x360
[ 9664.367335][T12167]      netlink_unicast+0x449/0x710
[ 9664.367335][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9664.367335][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9664.367335][T12167]      ___sys_sendmsg+0xee/0x170
[ 9664.367335][T12167]      __sys_sendmsg+0xcd/0x170
[ 9664.367335][T12167]      do_syscall_64+0xc6/0x1e0
[ 9664.367335][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9664.367335][T12167] 
[ 9664.369634][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9664.369634][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9664.369634][T12167]      ipv6_find_idev+0x102/0x170
[ 9664.369634][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9664.369634][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9664.369634][T12167]      netlink_rcv_skb+0x130/0x360
[ 9664.369634][T12167]      netlink_unicast+0x449/0x710
[ 9664.369634][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9664.369634][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9664.369634][T12167]      ___sys_sendmsg+0xee/0x170
[ 9664.369634][T12167]      __sys_sendmsg+0xcd/0x170
[ 9664.369634][T12167]      do_syscall_64+0xc6/0x1e0
[ 9664.369634][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9664.369634][T12167] 
[ 9664.371410][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9664.371410][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9664.371410][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9664.371410][T12167]      ipv6_find_idev+0x102/0x170
[ 9664.371410][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9664.371410][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9664.371410][T12167]      netlink_rcv_skb+0x130/0x360
[ 9664.371410][T12167]      netlink_unicast+0x449/0x710
[ 9664.371410][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9664.371410][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9664.371410][T12167]      ___sys_sendmsg+0xee/0x170
[ 9664.371410][T12167]      __sys_sendmsg+0xcd/0x170
[ 9664.371410][T12167]      do_syscall_64+0xc6/0x1e0
[ 9664.371410][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9664.371410][T12167] 
[ 9665.126815][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9665.127307][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9665.127307][   T10]      dst_init+0x84/0x4a0
[ 9665.127307][   T10]      dst_alloc+0x97/0x150
[ 9665.127307][   T10]      ip6_dst_alloc+0x23/0x90
[ 9665.127307][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9665.127307][   T10]      ip6_pol_route+0x56f/0x840
[ 9665.127307][   T10]      fib6_rule_lookup+0x334/0x630
[ 9665.127307][   T10]      ip6_route_output_flags+0x259/0x480
[ 9665.127307][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9665.127307][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9665.127307][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9665.127307][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9665.127307][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.127307][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.127307][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.127307][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.127307][   T10] 
[ 9665.129254][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.129254][   T10]      dst_init+0x84/0x4a0
[ 9665.129254][   T10]      dst_alloc+0x97/0x150
[ 9665.129254][   T10]      ip6_dst_alloc+0x23/0x90
[ 9665.129254][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9665.129254][   T10]      ip6_pol_route+0x56f/0x840
[ 9665.129254][   T10]      fib6_rule_lookup+0x334/0x630
[ 9665.129254][   T10]      ip6_route_output_flags+0x259/0x480
[ 9665.129254][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9665.129254][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9665.129254][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9665.129254][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9665.129254][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9665.129254][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.129254][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.129254][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.129254][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.129254][   T10] 
[ 9665.131292][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.131292][   T10]      dst_init+0x84/0x4a0
[ 9665.131292][   T10]      dst_alloc+0x97/0x150
[ 9665.131292][   T10]      ip6_dst_alloc+0x23/0x90
[ 9665.131292][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9665.131292][   T10]      ip6_pol_route+0x56f/0x840
[ 9665.131292][   T10]      fib6_rule_lookup+0x334/0x630
[ 9665.131292][   T10]      ip6_route_output_flags+0x259/0x480
[ 9665.131292][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9665.131292][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9665.131292][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9665.131292][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9665.131292][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9665.131292][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.131292][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.131292][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.131292][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.131292][   T10] 
[ 9665.133330][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.133330][   T10]      netdev_get_by_index+0x5e/0x80
[ 9665.133330][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9665.133330][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9665.133330][   T10]      ip6_route_add+0x1c/0x140
[ 9665.133330][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9665.133330][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9665.133330][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9665.133330][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9665.133330][   T10]      netlink_rcv_skb+0x130/0x360
[ 9665.133330][   T10]      netlink_unicast+0x449/0x710
[ 9665.133330][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9665.133330][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9665.133330][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.133330][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.133330][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.133330][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.133330][   T10] 
[ 9665.135357][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.135357][   T10]      netdev_get_by_index+0x5e/0x80
[ 9665.135357][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9665.135357][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9665.135357][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9665.135357][   T10]      ipv6_add_addr+0x411/0x2000
[ 9665.135357][   T10]      inet6_addr_add+0x30e/0xa40
[ 9665.135357][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9665.135357][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9665.135357][   T10]      netlink_rcv_skb+0x130/0x360
[ 9665.135357][   T10]      netlink_unicast+0x449/0x710
[ 9665.135357][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9665.135357][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9665.135357][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.135357][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.135357][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.135357][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.135357][   T10] 
[ 9665.137378][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.137378][   T10]      netdev_get_by_index+0x5e/0x80
[ 9665.137378][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9665.137378][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9665.137378][   T10]      ip6_route_add+0x1c/0x140
[ 9665.137378][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9665.137378][   T10]      addrconf_add_dev+0xe2/0x170
[ 9665.137378][   T10]      inet6_addr_add+0x12f/0xa40
[ 9665.137378][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9665.137378][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9665.137378][   T10]      netlink_rcv_skb+0x130/0x360
[ 9665.137378][   T10]      netlink_unicast+0x449/0x710
[ 9665.137378][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9665.137378][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9665.137378][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.137378][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.137378][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.137378][   T10] 
[ 9665.139378][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.139378][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9665.139378][   T10]      ipv6_find_idev+0x102/0x170
[ 9665.139378][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9665.139378][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9665.139378][   T10]      netlink_rcv_skb+0x130/0x360
[ 9665.139378][   T10]      netlink_unicast+0x449/0x710
[ 9665.139378][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9665.139378][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9665.139378][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.139378][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.139378][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.139378][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.139378][   T10] 
[ 9665.140957][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9665.140957][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9665.140957][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9665.140957][   T10]      ipv6_find_idev+0x102/0x170
[ 9665.140957][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9665.140957][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9665.140957][   T10]      netlink_rcv_skb+0x130/0x360
[ 9665.140957][   T10]      netlink_unicast+0x449/0x710
[ 9665.140957][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9665.140957][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9665.140957][   T10]      ___sys_sendmsg+0xee/0x170
[ 9665.140957][   T10]      __sys_sendmsg+0xcd/0x170
[ 9665.140957][   T10]      do_syscall_64+0xc6/0x1e0
[ 9665.140957][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9665.140957][   T10] 
[ 9674.622884][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9674.623408][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9674.623408][T12167]      netdev_get_by_index+0x5e/0x80
[ 9674.623408][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9674.623408][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9674.623408][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9674.623408][T12167]      ipv6_add_addr+0x411/0x2000
[ 9674.623408][T12167]      inet6_addr_add+0x30e/0xa40
[ 9674.623408][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9674.623408][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9674.623408][T12167]      netlink_rcv_skb+0x130/0x360
[ 9674.623408][T12167]      netlink_unicast+0x449/0x710
[ 9674.623408][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9674.623408][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9674.623408][T12167]      ___sys_sendmsg+0xee/0x170
[ 9674.623408][T12167]      __sys_sendmsg+0xcd/0x170
[ 9674.623408][T12167]      do_syscall_64+0xc6/0x1e0
[ 9674.623408][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9674.623408][T12167] 
[ 9674.625685][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9674.625685][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9674.625685][T12167]      ipv6_find_idev+0x102/0x170
[ 9674.625685][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9674.625685][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9674.625685][T12167]      netlink_rcv_skb+0x130/0x360
[ 9674.625685][T12167]      netlink_unicast+0x449/0x710
[ 9674.625685][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9674.625685][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9674.625685][T12167]      ___sys_sendmsg+0xee/0x170
[ 9674.625685][T12167]      __sys_sendmsg+0xcd/0x170
[ 9674.625685][T12167]      do_syscall_64+0xc6/0x1e0
[ 9674.625685][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9674.625685][T12167] 
[ 9674.627425][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9674.627425][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9674.627425][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9674.627425][T12167]      ipv6_find_idev+0x102/0x170
[ 9674.627425][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9674.627425][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9674.627425][T12167]      netlink_rcv_skb+0x130/0x360
[ 9674.627425][T12167]      netlink_unicast+0x449/0x710
[ 9674.627425][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9674.627425][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9674.627425][T12167]      ___sys_sendmsg+0xee/0x170
[ 9674.627425][T12167]      __sys_sendmsg+0xcd/0x170
[ 9674.627425][T12167]      do_syscall_64+0xc6/0x1e0
[ 9674.627425][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9674.627425][T12167] 
[ 9675.142778][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9675.143273][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9675.143273][   T10]      dst_init+0x84/0x4a0
[ 9675.143273][   T10]      dst_alloc+0x97/0x150
[ 9675.143273][   T10]      ip6_dst_alloc+0x23/0x90
[ 9675.143273][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9675.143273][   T10]      ip6_pol_route+0x56f/0x840
[ 9675.143273][   T10]      fib6_rule_lookup+0x334/0x630
[ 9675.143273][   T10]      ip6_route_output_flags+0x259/0x480
[ 9675.143273][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9675.143273][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9675.143273][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9675.143273][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9675.143273][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.143273][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.143273][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.143273][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.143273][   T10] 
[ 9675.145206][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.145206][   T10]      dst_init+0x84/0x4a0
[ 9675.145206][   T10]      dst_alloc+0x97/0x150
[ 9675.145206][   T10]      ip6_dst_alloc+0x23/0x90
[ 9675.145206][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9675.145206][   T10]      ip6_pol_route+0x56f/0x840
[ 9675.145206][   T10]      fib6_rule_lookup+0x334/0x630
[ 9675.145206][   T10]      ip6_route_output_flags+0x259/0x480
[ 9675.145206][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9675.145206][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9675.145206][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9675.145206][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9675.145206][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9675.145206][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.145206][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.145206][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.145206][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.145206][   T10] 
[ 9675.147228][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.147228][   T10]      dst_init+0x84/0x4a0
[ 9675.147228][   T10]      dst_alloc+0x97/0x150
[ 9675.147228][   T10]      ip6_dst_alloc+0x23/0x90
[ 9675.147228][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9675.147228][   T10]      ip6_pol_route+0x56f/0x840
[ 9675.147228][   T10]      fib6_rule_lookup+0x334/0x630
[ 9675.147228][   T10]      ip6_route_output_flags+0x259/0x480
[ 9675.147228][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9675.147228][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9675.147228][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9675.147228][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9675.147228][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9675.147228][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.147228][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.147228][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.147228][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.147228][   T10] 
[ 9675.149264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.149264][   T10]      netdev_get_by_index+0x5e/0x80
[ 9675.149264][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9675.149264][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9675.149264][   T10]      ip6_route_add+0x1c/0x140
[ 9675.149264][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9675.149264][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9675.149264][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9675.149264][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9675.149264][   T10]      netlink_rcv_skb+0x130/0x360
[ 9675.149264][   T10]      netlink_unicast+0x449/0x710
[ 9675.149264][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9675.149264][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9675.149264][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.149264][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.149264][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.149264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.149264][   T10] 
[ 9675.151291][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.151291][   T10]      netdev_get_by_index+0x5e/0x80
[ 9675.151291][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9675.151291][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9675.151291][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9675.151291][   T10]      ipv6_add_addr+0x411/0x2000
[ 9675.151291][   T10]      inet6_addr_add+0x30e/0xa40
[ 9675.151291][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9675.151291][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9675.151291][   T10]      netlink_rcv_skb+0x130/0x360
[ 9675.151291][   T10]      netlink_unicast+0x449/0x710
[ 9675.151291][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9675.151291][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9675.151291][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.151291][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.151291][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.151291][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.151291][   T10] 
[ 9675.153309][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.153309][   T10]      netdev_get_by_index+0x5e/0x80
[ 9675.153309][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9675.153309][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9675.153309][   T10]      ip6_route_add+0x1c/0x140
[ 9675.153309][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9675.153309][   T10]      addrconf_add_dev+0xe2/0x170
[ 9675.153309][   T10]      inet6_addr_add+0x12f/0xa40
[ 9675.153309][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9675.153309][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9675.153309][   T10]      netlink_rcv_skb+0x130/0x360
[ 9675.153309][   T10]      netlink_unicast+0x449/0x710
[ 9675.153309][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9675.153309][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9675.153309][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.153309][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.153309][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.153309][   T10] 
[ 9675.155296][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.155296][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9675.155296][   T10]      ipv6_find_idev+0x102/0x170
[ 9675.155296][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9675.155296][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9675.155296][   T10]      netlink_rcv_skb+0x130/0x360
[ 9675.155296][   T10]      netlink_unicast+0x449/0x710
[ 9675.155296][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9675.155296][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9675.155296][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.155296][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.155296][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.155296][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.155296][   T10] 
[ 9675.156848][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9675.156848][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9675.156848][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9675.156848][   T10]      ipv6_find_idev+0x102/0x170
[ 9675.156848][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9675.156848][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9675.156848][   T10]      netlink_rcv_skb+0x130/0x360
[ 9675.156848][   T10]      netlink_unicast+0x449/0x710
[ 9675.156848][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9675.156848][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9675.156848][   T10]      ___sys_sendmsg+0xee/0x170
[ 9675.156848][   T10]      __sys_sendmsg+0xcd/0x170
[ 9675.156848][   T10]      do_syscall_64+0xc6/0x1e0
[ 9675.156848][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9675.156848][   T10] 
[ 9684.878812][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9684.879303][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9684.879303][T12167]      netdev_get_by_index+0x5e/0x80
[ 9684.879303][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9684.879303][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9684.879303][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9684.879303][T12167]      ipv6_add_addr+0x411/0x2000
[ 9684.879303][T12167]      inet6_addr_add+0x30e/0xa40
[ 9684.879303][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9684.879303][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9684.879303][T12167]      netlink_rcv_skb+0x130/0x360
[ 9684.879303][T12167]      netlink_unicast+0x449/0x710
[ 9684.879303][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9684.879303][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9684.879303][T12167]      ___sys_sendmsg+0xee/0x170
[ 9684.879303][T12167]      __sys_sendmsg+0xcd/0x170
[ 9684.879303][T12167]      do_syscall_64+0xc6/0x1e0
[ 9684.879303][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9684.879303][T12167] 
[ 9684.881585][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9684.881585][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9684.881585][T12167]      ipv6_find_idev+0x102/0x170
[ 9684.881585][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9684.881585][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9684.881585][T12167]      netlink_rcv_skb+0x130/0x360
[ 9684.881585][T12167]      netlink_unicast+0x449/0x710
[ 9684.881585][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9684.881585][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9684.881585][T12167]      ___sys_sendmsg+0xee/0x170
[ 9684.881585][T12167]      __sys_sendmsg+0xcd/0x170
[ 9684.881585][T12167]      do_syscall_64+0xc6/0x1e0
[ 9684.881585][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9684.881585][T12167] 
[ 9684.883320][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9684.883320][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9684.883320][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9684.883320][T12167]      ipv6_find_idev+0x102/0x170
[ 9684.883320][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9684.883320][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9684.883320][T12167]      netlink_rcv_skb+0x130/0x360
[ 9684.883320][T12167]      netlink_unicast+0x449/0x710
[ 9684.883320][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9684.883320][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9684.883320][T12167]      ___sys_sendmsg+0xee/0x170
[ 9684.883320][T12167]      __sys_sendmsg+0xcd/0x170
[ 9684.883320][T12167]      do_syscall_64+0xc6/0x1e0
[ 9684.883320][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9684.883320][T12167] 
[ 9685.398808][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9685.399274][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9685.399274][   T10]      dst_init+0x84/0x4a0
[ 9685.399274][   T10]      dst_alloc+0x97/0x150
[ 9685.399274][   T10]      ip6_dst_alloc+0x23/0x90
[ 9685.399274][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9685.399274][   T10]      ip6_pol_route+0x56f/0x840
[ 9685.399274][   T10]      fib6_rule_lookup+0x334/0x630
[ 9685.399274][   T10]      ip6_route_output_flags+0x259/0x480
[ 9685.399274][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9685.399274][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9685.399274][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9685.399274][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9685.399274][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.399274][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.399274][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.399274][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.399274][   T10] 
[ 9685.401210][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.401210][   T10]      dst_init+0x84/0x4a0
[ 9685.401210][   T10]      dst_alloc+0x97/0x150
[ 9685.401210][   T10]      ip6_dst_alloc+0x23/0x90
[ 9685.401210][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9685.401210][   T10]      ip6_pol_route+0x56f/0x840
[ 9685.401210][   T10]      fib6_rule_lookup+0x334/0x630
[ 9685.401210][   T10]      ip6_route_output_flags+0x259/0x480
[ 9685.401210][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9685.401210][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9685.401210][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9685.401210][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9685.401210][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9685.401210][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.401210][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.401210][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.401210][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.401210][   T10] 
[ 9685.403206][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.403206][   T10]      dst_init+0x84/0x4a0
[ 9685.403206][   T10]      dst_alloc+0x97/0x150
[ 9685.403206][   T10]      ip6_dst_alloc+0x23/0x90
[ 9685.403206][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9685.403206][   T10]      ip6_pol_route+0x56f/0x840
[ 9685.403206][   T10]      fib6_rule_lookup+0x334/0x630
[ 9685.403206][   T10]      ip6_route_output_flags+0x259/0x480
[ 9685.403206][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9685.403206][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9685.403206][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9685.403206][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9685.403206][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9685.403206][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.403206][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.403206][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.403206][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.403206][   T10] 
[ 9685.405199][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.405199][   T10]      netdev_get_by_index+0x5e/0x80
[ 9685.405199][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9685.405199][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9685.405199][   T10]      ip6_route_add+0x1c/0x140
[ 9685.405199][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9685.405199][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9685.405199][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9685.405199][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9685.405199][   T10]      netlink_rcv_skb+0x130/0x360
[ 9685.405199][   T10]      netlink_unicast+0x449/0x710
[ 9685.405199][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9685.405199][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9685.405199][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.405199][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.405199][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.405199][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.405199][   T10] 
[ 9685.407196][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.407196][   T10]      netdev_get_by_index+0x5e/0x80
[ 9685.407196][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9685.407196][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9685.407196][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9685.407196][   T10]      ipv6_add_addr+0x411/0x2000
[ 9685.407196][   T10]      inet6_addr_add+0x30e/0xa40
[ 9685.407196][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9685.407196][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9685.407196][   T10]      netlink_rcv_skb+0x130/0x360
[ 9685.407196][   T10]      netlink_unicast+0x449/0x710
[ 9685.407196][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9685.407196][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9685.407196][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.407196][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.407196][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.407196][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.407196][   T10] 
[ 9685.409187][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.409187][   T10]      netdev_get_by_index+0x5e/0x80
[ 9685.409187][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9685.409187][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9685.409187][   T10]      ip6_route_add+0x1c/0x140
[ 9685.409187][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9685.409187][   T10]      addrconf_add_dev+0xe2/0x170
[ 9685.409187][   T10]      inet6_addr_add+0x12f/0xa40
[ 9685.409187][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9685.409187][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9685.409187][   T10]      netlink_rcv_skb+0x130/0x360
[ 9685.409187][   T10]      netlink_unicast+0x449/0x710
[ 9685.409187][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9685.409187][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9685.409187][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.409187][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.409187][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.409187][   T10] 
[ 9685.411162][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.411162][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9685.411162][   T10]      ipv6_find_idev+0x102/0x170
[ 9685.411162][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9685.411162][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9685.411162][   T10]      netlink_rcv_skb+0x130/0x360
[ 9685.411162][   T10]      netlink_unicast+0x449/0x710
[ 9685.411162][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9685.411162][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9685.411162][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.411162][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.411162][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.411162][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.411162][   T10] 
[ 9685.412694][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9685.412694][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9685.412694][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9685.412694][   T10]      ipv6_find_idev+0x102/0x170
[ 9685.412694][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9685.412694][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9685.412694][   T10]      netlink_rcv_skb+0x130/0x360
[ 9685.412694][   T10]      netlink_unicast+0x449/0x710
[ 9685.412694][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9685.412694][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9685.412694][   T10]      ___sys_sendmsg+0xee/0x170
[ 9685.412694][   T10]      __sys_sendmsg+0xcd/0x170
[ 9685.412694][   T10]      do_syscall_64+0xc6/0x1e0
[ 9685.412694][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9685.412694][   T10] 
[ 9694.886722][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9694.887206][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9694.887206][T12167]      netdev_get_by_index+0x5e/0x80
[ 9694.887206][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9694.887206][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9694.887206][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9694.887206][T12167]      ipv6_add_addr+0x411/0x2000
[ 9694.887206][T12167]      inet6_addr_add+0x30e/0xa40
[ 9694.887206][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9694.887206][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9694.887206][T12167]      netlink_rcv_skb+0x130/0x360
[ 9694.887206][T12167]      netlink_unicast+0x449/0x710
[ 9694.887206][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9694.887206][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9694.887206][T12167]      ___sys_sendmsg+0xee/0x170
[ 9694.887206][T12167]      __sys_sendmsg+0xcd/0x170
[ 9694.887206][T12167]      do_syscall_64+0xc6/0x1e0
[ 9694.887206][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9694.887206][T12167] 
[ 9694.889532][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9694.889532][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9694.889532][T12167]      ipv6_find_idev+0x102/0x170
[ 9694.889532][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9694.889532][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9694.889532][T12167]      netlink_rcv_skb+0x130/0x360
[ 9694.889532][T12167]      netlink_unicast+0x449/0x710
[ 9694.889532][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9694.889532][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9694.889532][T12167]      ___sys_sendmsg+0xee/0x170
[ 9694.889532][T12167]      __sys_sendmsg+0xcd/0x170
[ 9694.889532][T12167]      do_syscall_64+0xc6/0x1e0
[ 9694.889532][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9694.889532][T12167] 
[ 9694.891274][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9694.891274][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9694.891274][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9694.891274][T12167]      ipv6_find_idev+0x102/0x170
[ 9694.891274][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9694.891274][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9694.891274][T12167]      netlink_rcv_skb+0x130/0x360
[ 9694.891274][T12167]      netlink_unicast+0x449/0x710
[ 9694.891274][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9694.891274][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9694.891274][T12167]      ___sys_sendmsg+0xee/0x170
[ 9694.891274][T12167]      __sys_sendmsg+0xcd/0x170
[ 9694.891274][T12167]      do_syscall_64+0xc6/0x1e0
[ 9694.891274][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9694.891274][T12167] 
[ 9695.654908][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9695.655400][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9695.655400][   T10]      dst_init+0x84/0x4a0
[ 9695.655400][   T10]      dst_alloc+0x97/0x150
[ 9695.655400][   T10]      ip6_dst_alloc+0x23/0x90
[ 9695.655400][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9695.655400][   T10]      ip6_pol_route+0x56f/0x840
[ 9695.655400][   T10]      fib6_rule_lookup+0x334/0x630
[ 9695.655400][   T10]      ip6_route_output_flags+0x259/0x480
[ 9695.655400][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9695.655400][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9695.655400][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9695.655400][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9695.655400][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.655400][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.655400][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.655400][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.655400][   T10] 
[ 9695.657313][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.657313][   T10]      dst_init+0x84/0x4a0
[ 9695.657313][   T10]      dst_alloc+0x97/0x150
[ 9695.657313][   T10]      ip6_dst_alloc+0x23/0x90
[ 9695.657313][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9695.657313][   T10]      ip6_pol_route+0x56f/0x840
[ 9695.657313][   T10]      fib6_rule_lookup+0x334/0x630
[ 9695.657313][   T10]      ip6_route_output_flags+0x259/0x480
[ 9695.657313][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9695.657313][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9695.657313][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9695.657313][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9695.657313][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9695.657313][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.657313][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.657313][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.657313][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.657313][   T10] 
[ 9695.659309][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.659309][   T10]      dst_init+0x84/0x4a0
[ 9695.659309][   T10]      dst_alloc+0x97/0x150
[ 9695.659309][   T10]      ip6_dst_alloc+0x23/0x90
[ 9695.659309][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9695.659309][   T10]      ip6_pol_route+0x56f/0x840
[ 9695.659309][   T10]      fib6_rule_lookup+0x334/0x630
[ 9695.659309][   T10]      ip6_route_output_flags+0x259/0x480
[ 9695.659309][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9695.659309][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9695.659309][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9695.659309][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9695.659309][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9695.659309][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.659309][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.659309][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.659309][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.659309][   T10] 
[ 9695.661325][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.661325][   T10]      netdev_get_by_index+0x5e/0x80
[ 9695.661325][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9695.661325][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9695.661325][   T10]      ip6_route_add+0x1c/0x140
[ 9695.661325][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9695.661325][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9695.661325][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9695.661325][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9695.661325][   T10]      netlink_rcv_skb+0x130/0x360
[ 9695.661325][   T10]      netlink_unicast+0x449/0x710
[ 9695.661325][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9695.661325][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9695.661325][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.661325][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.661325][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.661325][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.661325][   T10] 
[ 9695.663337][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.663337][   T10]      netdev_get_by_index+0x5e/0x80
[ 9695.663337][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9695.663337][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9695.663337][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9695.663337][   T10]      ipv6_add_addr+0x411/0x2000
[ 9695.663337][   T10]      inet6_addr_add+0x30e/0xa40
[ 9695.663337][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9695.663337][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9695.663337][   T10]      netlink_rcv_skb+0x130/0x360
[ 9695.663337][   T10]      netlink_unicast+0x449/0x710
[ 9695.663337][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9695.663337][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9695.663337][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.663337][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.663337][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.663337][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.663337][   T10] 
[ 9695.665334][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.665334][   T10]      netdev_get_by_index+0x5e/0x80
[ 9695.665334][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9695.665334][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9695.665334][   T10]      ip6_route_add+0x1c/0x140
[ 9695.665334][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9695.665334][   T10]      addrconf_add_dev+0xe2/0x170
[ 9695.665334][   T10]      inet6_addr_add+0x12f/0xa40
[ 9695.665334][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9695.665334][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9695.665334][   T10]      netlink_rcv_skb+0x130/0x360
[ 9695.665334][   T10]      netlink_unicast+0x449/0x710
[ 9695.665334][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9695.665334][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9695.665334][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.665334][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.665334][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.665334][   T10] 
[ 9695.667298][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.667298][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9695.667298][   T10]      ipv6_find_idev+0x102/0x170
[ 9695.667298][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9695.667298][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9695.667298][   T10]      netlink_rcv_skb+0x130/0x360
[ 9695.667298][   T10]      netlink_unicast+0x449/0x710
[ 9695.667298][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9695.667298][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9695.667298][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.667298][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.667298][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.667298][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.667298][   T10] 
[ 9695.668841][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9695.668841][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9695.668841][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9695.668841][   T10]      ipv6_find_idev+0x102/0x170
[ 9695.668841][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9695.668841][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9695.668841][   T10]      netlink_rcv_skb+0x130/0x360
[ 9695.668841][   T10]      netlink_unicast+0x449/0x710
[ 9695.668841][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9695.668841][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9695.668841][   T10]      ___sys_sendmsg+0xee/0x170
[ 9695.668841][   T10]      __sys_sendmsg+0xcd/0x170
[ 9695.668841][   T10]      do_syscall_64+0xc6/0x1e0
[ 9695.668841][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9695.668841][   T10] 
[ 9704.910807][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9704.911290][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9704.911290][T12167]      netdev_get_by_index+0x5e/0x80
[ 9704.911290][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9704.911290][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9704.911290][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9704.911290][T12167]      ipv6_add_addr+0x411/0x2000
[ 9704.911290][T12167]      inet6_addr_add+0x30e/0xa40
[ 9704.911290][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9704.911290][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9704.911290][T12167]      netlink_rcv_skb+0x130/0x360
[ 9704.911290][T12167]      netlink_unicast+0x449/0x710
[ 9704.911290][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9704.911290][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9704.911290][T12167]      ___sys_sendmsg+0xee/0x170
[ 9704.911290][T12167]      __sys_sendmsg+0xcd/0x170
[ 9704.911290][T12167]      do_syscall_64+0xc6/0x1e0
[ 9704.911290][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9704.911290][T12167] 
[ 9704.913574][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9704.913574][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9704.913574][T12167]      ipv6_find_idev+0x102/0x170
[ 9704.913574][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9704.913574][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9704.913574][T12167]      netlink_rcv_skb+0x130/0x360
[ 9704.913574][T12167]      netlink_unicast+0x449/0x710
[ 9704.913574][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9704.913574][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9704.913574][T12167]      ___sys_sendmsg+0xee/0x170
[ 9704.913574][T12167]      __sys_sendmsg+0xcd/0x170
[ 9704.913574][T12167]      do_syscall_64+0xc6/0x1e0
[ 9704.913574][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9704.913574][T12167] 
[ 9704.915305][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9704.915305][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9704.915305][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9704.915305][T12167]      ipv6_find_idev+0x102/0x170
[ 9704.915305][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9704.915305][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9704.915305][T12167]      netlink_rcv_skb+0x130/0x360
[ 9704.915305][T12167]      netlink_unicast+0x449/0x710
[ 9704.915305][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9704.915305][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9704.915305][T12167]      ___sys_sendmsg+0xee/0x170
[ 9704.915305][T12167]      __sys_sendmsg+0xcd/0x170
[ 9704.915305][T12167]      do_syscall_64+0xc6/0x1e0
[ 9704.915305][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9704.915305][T12167] 
[ 9705.678804][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9705.679235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9705.679235][   T10]      dst_init+0x84/0x4a0
[ 9705.679235][   T10]      dst_alloc+0x97/0x150
[ 9705.679235][   T10]      ip6_dst_alloc+0x23/0x90
[ 9705.679235][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9705.679235][   T10]      ip6_pol_route+0x56f/0x840
[ 9705.679235][   T10]      fib6_rule_lookup+0x334/0x630
[ 9705.679235][   T10]      ip6_route_output_flags+0x259/0x480
[ 9705.679235][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9705.679235][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9705.679235][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9705.679235][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9705.679235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.679235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.679235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.679235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.679235][   T10] 
[ 9705.681143][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.681143][   T10]      dst_init+0x84/0x4a0
[ 9705.681143][   T10]      dst_alloc+0x97/0x150
[ 9705.681143][   T10]      ip6_dst_alloc+0x23/0x90
[ 9705.681143][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9705.681143][   T10]      ip6_pol_route+0x56f/0x840
[ 9705.681143][   T10]      fib6_rule_lookup+0x334/0x630
[ 9705.681143][   T10]      ip6_route_output_flags+0x259/0x480
[ 9705.681143][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9705.681143][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9705.681143][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9705.681143][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9705.681143][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9705.681143][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.681143][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.681143][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.681143][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.681143][   T10] 
[ 9705.683145][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.683145][   T10]      dst_init+0x84/0x4a0
[ 9705.683145][   T10]      dst_alloc+0x97/0x150
[ 9705.683145][   T10]      ip6_dst_alloc+0x23/0x90
[ 9705.683145][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9705.683145][   T10]      ip6_pol_route+0x56f/0x840
[ 9705.683145][   T10]      fib6_rule_lookup+0x334/0x630
[ 9705.683145][   T10]      ip6_route_output_flags+0x259/0x480
[ 9705.683145][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9705.683145][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9705.683145][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9705.683145][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9705.683145][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9705.683145][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.683145][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.683145][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.683145][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.683145][   T10] 
[ 9705.685140][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.685140][   T10]      netdev_get_by_index+0x5e/0x80
[ 9705.685140][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9705.685140][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9705.685140][   T10]      ip6_route_add+0x1c/0x140
[ 9705.685140][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9705.685140][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9705.685140][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9705.685140][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9705.685140][   T10]      netlink_rcv_skb+0x130/0x360
[ 9705.685140][   T10]      netlink_unicast+0x449/0x710
[ 9705.685140][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9705.685140][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9705.685140][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.685140][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.685140][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.685140][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.685140][   T10] 
[ 9705.687137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.687137][   T10]      netdev_get_by_index+0x5e/0x80
[ 9705.687137][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9705.687137][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9705.687137][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9705.687137][   T10]      ipv6_add_addr+0x411/0x2000
[ 9705.687137][   T10]      inet6_addr_add+0x30e/0xa40
[ 9705.687137][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9705.687137][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9705.687137][   T10]      netlink_rcv_skb+0x130/0x360
[ 9705.687137][   T10]      netlink_unicast+0x449/0x710
[ 9705.687137][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9705.687137][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9705.687137][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.687137][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.687137][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.687137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.687137][   T10] 
[ 9705.689124][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.689124][   T10]      netdev_get_by_index+0x5e/0x80
[ 9705.689124][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9705.689124][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9705.689124][   T10]      ip6_route_add+0x1c/0x140
[ 9705.689124][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9705.689124][   T10]      addrconf_add_dev+0xe2/0x170
[ 9705.689124][   T10]      inet6_addr_add+0x12f/0xa40
[ 9705.689124][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9705.689124][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9705.689124][   T10]      netlink_rcv_skb+0x130/0x360
[ 9705.689124][   T10]      netlink_unicast+0x449/0x710
[ 9705.689124][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9705.689124][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9705.689124][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.689124][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.689124][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.689124][   T10] 
[ 9705.691083][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.691083][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9705.691083][   T10]      ipv6_find_idev+0x102/0x170
[ 9705.691083][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9705.691083][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9705.691083][   T10]      netlink_rcv_skb+0x130/0x360
[ 9705.691083][   T10]      netlink_unicast+0x449/0x710
[ 9705.691083][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9705.691083][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9705.691083][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.691083][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.691083][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.691083][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.691083][   T10] 
[ 9705.692618][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9705.692618][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9705.692618][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9705.692618][   T10]      ipv6_find_idev+0x102/0x170
[ 9705.692618][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9705.692618][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9705.692618][   T10]      netlink_rcv_skb+0x130/0x360
[ 9705.692618][   T10]      netlink_unicast+0x449/0x710
[ 9705.692618][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9705.692618][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9705.692618][   T10]      ___sys_sendmsg+0xee/0x170
[ 9705.692618][   T10]      __sys_sendmsg+0xcd/0x170
[ 9705.692618][   T10]      do_syscall_64+0xc6/0x1e0
[ 9705.692618][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9705.692618][   T10] 
[ 9708.838902][   T42] INFO: task modprobe:12646 blocked for more than 983 seconds.
[ 9708.839132][   T42]       Not tainted 6.8.0-virtme #1
[ 9708.839250][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9708.839454][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9708.839732][   T42] Call Trace:
[ 9708.839829][   T42]  <TASK>
[ 9708.839901][   T42]  __schedule+0x705/0x1ac0
[ 9708.840037][   T42]  ? __pfx___schedule+0x10/0x10
[ 9708.840172][   T42]  ? schedule+0x1a5/0x210
[ 9708.840269][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9708.840400][   T42]  ? mark_lock+0x38/0x3e0
[ 9708.840500][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9708.840631][   T42]  ? schedule+0x1a5/0x210
[ 9708.840743][   T42]  schedule+0xdf/0x210
[ 9708.840838][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9708.840961][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9708.841097][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9708.841251][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9708.841376][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9708.841510][   T42]  ? lock_acquire+0x1c1/0x220
[ 9708.841636][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9708.841777][   T42]  down_write+0x1c9/0x200
[ 9708.841874][   T42]  ? __pfx_down_write+0x10/0x10
[ 9708.841998][   T42]  ? __pfx__printk+0x10/0x10
[ 9708.842126][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9708.842254][   T42]  register_pernet_subsys+0x1a/0x50
[ 9708.842377][   T42]  tcf_register_action+0xa3/0x600
[ 9708.842504][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9708.842665][   T42]  do_one_initcall+0xc8/0x3f0
[ 9708.842802][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9708.842933][   T42]  ? __create_object+0x5e/0xb0
[ 9708.843067][   T42]  ? kasan_unpoison+0x27/0x60
[ 9708.843202][   T42]  do_init_module+0x233/0x740
[ 9708.843339][   T42]  load_module+0x16b5/0x2350
[ 9708.843489][   T42]  ? __pfx_load_module+0x10/0x10
[ 9708.843613][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9708.843750][   T42]  ? kernel_read_file+0x300/0x520
[ 9708.843882][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9708.844014][   T42]  ? init_module_from_file+0xd2/0x130
[ 9708.844156][   T42]  init_module_from_file+0xd2/0x130
[ 9708.844285][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9708.844443][   T42]  ? __lock_release+0x103/0x460
[ 9708.844567][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9708.844719][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9708.844847][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9708.844978][   T42]  idempotent_init_module+0x342/0x620
[ 9708.845105][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9708.845278][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9708.845406][   T42]  do_syscall_64+0xc6/0x1e0
[ 9708.845538][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9708.845709][   T42] RIP: 0033:0x7fac120f1e5d
[ 9708.845840][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9708.846030][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9708.846215][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9708.846401][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9708.846588][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9708.846787][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9708.846999][   T42]  </TASK>
[ 9708.847100][   T42] 
[ 9708.847100][   T42] Showing all locks held in the system:
[ 9708.847286][   T42] 3 locks held by kworker/u16:0/10:
[ 9708.847414][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9708.847672][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9708.847903][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9708.848132][   T42] 1 lock held by khungtaskd/42:
[ 9708.848253][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9708.848481][   T42] 2 locks held by kworker/u17:1/44:
[ 9708.848603][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9708.848856][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9708.849141][   T42] 1 lock held by modprobe/12646:
[ 9708.849261][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9708.849512][   T42] 
[ 9708.849573][   T42] =============================================
[ 9708.849573][   T42] 
[ 9715.094880][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9715.095367][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9715.095367][T12167]      netdev_get_by_index+0x5e/0x80
[ 9715.095367][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9715.095367][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9715.095367][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9715.095367][T12167]      ipv6_add_addr+0x411/0x2000
[ 9715.095367][T12167]      inet6_addr_add+0x30e/0xa40
[ 9715.095367][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9715.095367][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.095367][T12167]      netlink_rcv_skb+0x130/0x360
[ 9715.095367][T12167]      netlink_unicast+0x449/0x710
[ 9715.095367][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9715.095367][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.095367][T12167]      ___sys_sendmsg+0xee/0x170
[ 9715.095367][T12167]      __sys_sendmsg+0xcd/0x170
[ 9715.095367][T12167]      do_syscall_64+0xc6/0x1e0
[ 9715.095367][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.095367][T12167] 
[ 9715.097678][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9715.097678][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9715.097678][T12167]      ipv6_find_idev+0x102/0x170
[ 9715.097678][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9715.097678][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.097678][T12167]      netlink_rcv_skb+0x130/0x360
[ 9715.097678][T12167]      netlink_unicast+0x449/0x710
[ 9715.097678][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9715.097678][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.097678][T12167]      ___sys_sendmsg+0xee/0x170
[ 9715.097678][T12167]      __sys_sendmsg+0xcd/0x170
[ 9715.097678][T12167]      do_syscall_64+0xc6/0x1e0
[ 9715.097678][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.097678][T12167] 
[ 9715.099464][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9715.099464][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9715.099464][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9715.099464][T12167]      ipv6_find_idev+0x102/0x170
[ 9715.099464][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9715.099464][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.099464][T12167]      netlink_rcv_skb+0x130/0x360
[ 9715.099464][T12167]      netlink_unicast+0x449/0x710
[ 9715.099464][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9715.099464][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.099464][T12167]      ___sys_sendmsg+0xee/0x170
[ 9715.099464][T12167]      __sys_sendmsg+0xcd/0x170
[ 9715.099464][T12167]      do_syscall_64+0xc6/0x1e0
[ 9715.099464][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.099464][T12167] 
[ 9715.862805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9715.863215][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9715.863215][   T10]      dst_init+0x84/0x4a0
[ 9715.863215][   T10]      dst_alloc+0x97/0x150
[ 9715.863215][   T10]      ip6_dst_alloc+0x23/0x90
[ 9715.863215][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9715.863215][   T10]      ip6_pol_route+0x56f/0x840
[ 9715.863215][   T10]      fib6_rule_lookup+0x334/0x630
[ 9715.863215][   T10]      ip6_route_output_flags+0x259/0x480
[ 9715.863215][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9715.863215][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9715.863215][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9715.863215][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9715.863215][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.863215][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.863215][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.863215][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.863215][   T10] 
[ 9715.865149][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.865149][   T10]      dst_init+0x84/0x4a0
[ 9715.865149][   T10]      dst_alloc+0x97/0x150
[ 9715.865149][   T10]      ip6_dst_alloc+0x23/0x90
[ 9715.865149][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9715.865149][   T10]      ip6_pol_route+0x56f/0x840
[ 9715.865149][   T10]      fib6_rule_lookup+0x334/0x630
[ 9715.865149][   T10]      ip6_route_output_flags+0x259/0x480
[ 9715.865149][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9715.865149][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9715.865149][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9715.865149][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9715.865149][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9715.865149][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.865149][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.865149][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.865149][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.865149][   T10] 
[ 9715.867165][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.867165][   T10]      dst_init+0x84/0x4a0
[ 9715.867165][   T10]      dst_alloc+0x97/0x150
[ 9715.867165][   T10]      ip6_dst_alloc+0x23/0x90
[ 9715.867165][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9715.867165][   T10]      ip6_pol_route+0x56f/0x840
[ 9715.867165][   T10]      fib6_rule_lookup+0x334/0x630
[ 9715.867165][   T10]      ip6_route_output_flags+0x259/0x480
[ 9715.867165][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9715.867165][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9715.867165][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9715.867165][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9715.867165][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9715.867165][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.867165][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.867165][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.867165][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.867165][   T10] 
[ 9715.869186][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.869186][   T10]      netdev_get_by_index+0x5e/0x80
[ 9715.869186][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9715.869186][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9715.869186][   T10]      ip6_route_add+0x1c/0x140
[ 9715.869186][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9715.869186][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9715.869186][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9715.869186][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.869186][   T10]      netlink_rcv_skb+0x130/0x360
[ 9715.869186][   T10]      netlink_unicast+0x449/0x710
[ 9715.869186][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9715.869186][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.869186][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.869186][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.869186][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.869186][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.869186][   T10] 
[ 9715.871210][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.871210][   T10]      netdev_get_by_index+0x5e/0x80
[ 9715.871210][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9715.871210][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9715.871210][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9715.871210][   T10]      ipv6_add_addr+0x411/0x2000
[ 9715.871210][   T10]      inet6_addr_add+0x30e/0xa40
[ 9715.871210][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9715.871210][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.871210][   T10]      netlink_rcv_skb+0x130/0x360
[ 9715.871210][   T10]      netlink_unicast+0x449/0x710
[ 9715.871210][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9715.871210][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.871210][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.871210][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.871210][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.871210][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.871210][   T10] 
[ 9715.873215][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.873215][   T10]      netdev_get_by_index+0x5e/0x80
[ 9715.873215][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9715.873215][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9715.873215][   T10]      ip6_route_add+0x1c/0x140
[ 9715.873215][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9715.873215][   T10]      addrconf_add_dev+0xe2/0x170
[ 9715.873215][   T10]      inet6_addr_add+0x12f/0xa40
[ 9715.873215][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9715.873215][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.873215][   T10]      netlink_rcv_skb+0x130/0x360
[ 9715.873215][   T10]      netlink_unicast+0x449/0x710
[ 9715.873215][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9715.873215][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.873215][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.873215][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.873215][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.873215][   T10] 
[ 9715.875191][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.875191][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9715.875191][   T10]      ipv6_find_idev+0x102/0x170
[ 9715.875191][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9715.875191][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.875191][   T10]      netlink_rcv_skb+0x130/0x360
[ 9715.875191][   T10]      netlink_unicast+0x449/0x710
[ 9715.875191][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9715.875191][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.875191][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.875191][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.875191][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.875191][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.875191][   T10] 
[ 9715.876753][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9715.876753][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9715.876753][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9715.876753][   T10]      ipv6_find_idev+0x102/0x170
[ 9715.876753][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9715.876753][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9715.876753][   T10]      netlink_rcv_skb+0x130/0x360
[ 9715.876753][   T10]      netlink_unicast+0x449/0x710
[ 9715.876753][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9715.876753][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9715.876753][   T10]      ___sys_sendmsg+0xee/0x170
[ 9715.876753][   T10]      __sys_sendmsg+0xcd/0x170
[ 9715.876753][   T10]      do_syscall_64+0xc6/0x1e0
[ 9715.876753][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9715.876753][   T10] 
[ 9725.102807][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9725.103309][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9725.103309][T12167]      netdev_get_by_index+0x5e/0x80
[ 9725.103309][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9725.103309][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9725.103309][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9725.103309][T12167]      ipv6_add_addr+0x411/0x2000
[ 9725.103309][T12167]      inet6_addr_add+0x30e/0xa40
[ 9725.103309][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9725.103309][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9725.103309][T12167]      netlink_rcv_skb+0x130/0x360
[ 9725.103309][T12167]      netlink_unicast+0x449/0x710
[ 9725.103309][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9725.103309][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9725.103309][T12167]      ___sys_sendmsg+0xee/0x170
[ 9725.103309][T12167]      __sys_sendmsg+0xcd/0x170
[ 9725.103309][T12167]      do_syscall_64+0xc6/0x1e0
[ 9725.103309][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9725.103309][T12167] 
[ 9725.105598][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9725.105598][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9725.105598][T12167]      ipv6_find_idev+0x102/0x170
[ 9725.105598][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9725.105598][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9725.105598][T12167]      netlink_rcv_skb+0x130/0x360
[ 9725.105598][T12167]      netlink_unicast+0x449/0x710
[ 9725.105598][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9725.105598][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9725.105598][T12167]      ___sys_sendmsg+0xee/0x170
[ 9725.105598][T12167]      __sys_sendmsg+0xcd/0x170
[ 9725.105598][T12167]      do_syscall_64+0xc6/0x1e0
[ 9725.105598][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9725.105598][T12167] 
[ 9725.107356][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9725.107356][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9725.107356][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9725.107356][T12167]      ipv6_find_idev+0x102/0x170
[ 9725.107356][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9725.107356][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9725.107356][T12167]      netlink_rcv_skb+0x130/0x360
[ 9725.107356][T12167]      netlink_unicast+0x449/0x710
[ 9725.107356][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9725.107356][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9725.107356][T12167]      ___sys_sendmsg+0xee/0x170
[ 9725.107356][T12167]      __sys_sendmsg+0xcd/0x170
[ 9725.107356][T12167]      do_syscall_64+0xc6/0x1e0
[ 9725.107356][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9725.107356][T12167] 
[ 9726.118874][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9726.119289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9726.119289][   T10]      dst_init+0x84/0x4a0
[ 9726.119289][   T10]      dst_alloc+0x97/0x150
[ 9726.119289][   T10]      ip6_dst_alloc+0x23/0x90
[ 9726.119289][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9726.119289][   T10]      ip6_pol_route+0x56f/0x840
[ 9726.119289][   T10]      fib6_rule_lookup+0x334/0x630
[ 9726.119289][   T10]      ip6_route_output_flags+0x259/0x480
[ 9726.119289][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9726.119289][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9726.119289][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9726.119289][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9726.119289][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.119289][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.119289][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.119289][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.119289][   T10] 
[ 9726.121247][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.121247][   T10]      dst_init+0x84/0x4a0
[ 9726.121247][   T10]      dst_alloc+0x97/0x150
[ 9726.121247][   T10]      ip6_dst_alloc+0x23/0x90
[ 9726.121247][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9726.121247][   T10]      ip6_pol_route+0x56f/0x840
[ 9726.121247][   T10]      fib6_rule_lookup+0x334/0x630
[ 9726.121247][   T10]      ip6_route_output_flags+0x259/0x480
[ 9726.121247][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9726.121247][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9726.121247][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9726.121247][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9726.121247][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9726.121247][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.121247][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.121247][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.121247][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.121247][   T10] 
[ 9726.123260][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.123260][   T10]      dst_init+0x84/0x4a0
[ 9726.123260][   T10]      dst_alloc+0x97/0x150
[ 9726.123260][   T10]      ip6_dst_alloc+0x23/0x90
[ 9726.123260][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9726.123260][   T10]      ip6_pol_route+0x56f/0x840
[ 9726.123260][   T10]      fib6_rule_lookup+0x334/0x630
[ 9726.123260][   T10]      ip6_route_output_flags+0x259/0x480
[ 9726.123260][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9726.123260][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9726.123260][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9726.123260][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9726.123260][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9726.123260][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.123260][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.123260][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.123260][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.123260][   T10] 
[ 9726.125275][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.125275][   T10]      netdev_get_by_index+0x5e/0x80
[ 9726.125275][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9726.125275][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9726.125275][   T10]      ip6_route_add+0x1c/0x140
[ 9726.125275][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9726.125275][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9726.125275][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9726.125275][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9726.125275][   T10]      netlink_rcv_skb+0x130/0x360
[ 9726.125275][   T10]      netlink_unicast+0x449/0x710
[ 9726.125275][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9726.125275][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9726.125275][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.125275][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.125275][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.125275][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.125275][   T10] 
[ 9726.127289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.127289][   T10]      netdev_get_by_index+0x5e/0x80
[ 9726.127289][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9726.127289][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9726.127289][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9726.127289][   T10]      ipv6_add_addr+0x411/0x2000
[ 9726.127289][   T10]      inet6_addr_add+0x30e/0xa40
[ 9726.127289][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9726.127289][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9726.127289][   T10]      netlink_rcv_skb+0x130/0x360
[ 9726.127289][   T10]      netlink_unicast+0x449/0x710
[ 9726.127289][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9726.127289][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9726.127289][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.127289][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.127289][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.127289][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.127289][   T10] 
[ 9726.129291][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.129291][   T10]      netdev_get_by_index+0x5e/0x80
[ 9726.129291][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9726.129291][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9726.129291][   T10]      ip6_route_add+0x1c/0x140
[ 9726.129291][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9726.129291][   T10]      addrconf_add_dev+0xe2/0x170
[ 9726.129291][   T10]      inet6_addr_add+0x12f/0xa40
[ 9726.129291][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9726.129291][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9726.129291][   T10]      netlink_rcv_skb+0x130/0x360
[ 9726.129291][   T10]      netlink_unicast+0x449/0x710
[ 9726.129291][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9726.129291][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9726.129291][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.129291][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.129291][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.129291][   T10] 
[ 9726.131269][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.131269][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9726.131269][   T10]      ipv6_find_idev+0x102/0x170
[ 9726.131269][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9726.131269][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9726.131269][   T10]      netlink_rcv_skb+0x130/0x360
[ 9726.131269][   T10]      netlink_unicast+0x449/0x710
[ 9726.131269][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9726.131269][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9726.131269][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.131269][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.131269][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.131269][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.131269][   T10] 
[ 9726.132819][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9726.132819][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9726.132819][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9726.132819][   T10]      ipv6_find_idev+0x102/0x170
[ 9726.132819][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9726.132819][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9726.132819][   T10]      netlink_rcv_skb+0x130/0x360
[ 9726.132819][   T10]      netlink_unicast+0x449/0x710
[ 9726.132819][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9726.132819][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9726.132819][   T10]      ___sys_sendmsg+0xee/0x170
[ 9726.132819][   T10]      __sys_sendmsg+0xcd/0x170
[ 9726.132819][   T10]      do_syscall_64+0xc6/0x1e0
[ 9726.132819][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9726.132819][   T10] 
[ 9735.358817][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9735.359246][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9735.359246][T12167]      netdev_get_by_index+0x5e/0x80
[ 9735.359246][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9735.359246][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9735.359246][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9735.359246][T12167]      ipv6_add_addr+0x411/0x2000
[ 9735.359246][T12167]      inet6_addr_add+0x30e/0xa40
[ 9735.359246][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9735.359246][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9735.359246][T12167]      netlink_rcv_skb+0x130/0x360
[ 9735.359246][T12167]      netlink_unicast+0x449/0x710
[ 9735.359246][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9735.359246][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9735.359246][T12167]      ___sys_sendmsg+0xee/0x170
[ 9735.359246][T12167]      __sys_sendmsg+0xcd/0x170
[ 9735.359246][T12167]      do_syscall_64+0xc6/0x1e0
[ 9735.359246][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9735.359246][T12167] 
[ 9735.361548][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9735.361548][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9735.361548][T12167]      ipv6_find_idev+0x102/0x170
[ 9735.361548][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9735.361548][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9735.361548][T12167]      netlink_rcv_skb+0x130/0x360
[ 9735.361548][T12167]      netlink_unicast+0x449/0x710
[ 9735.361548][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9735.361548][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9735.361548][T12167]      ___sys_sendmsg+0xee/0x170
[ 9735.361548][T12167]      __sys_sendmsg+0xcd/0x170
[ 9735.361548][T12167]      do_syscall_64+0xc6/0x1e0
[ 9735.361548][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9735.361548][T12167] 
[ 9735.363288][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9735.363288][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9735.363288][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9735.363288][T12167]      ipv6_find_idev+0x102/0x170
[ 9735.363288][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9735.363288][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9735.363288][T12167]      netlink_rcv_skb+0x130/0x360
[ 9735.363288][T12167]      netlink_unicast+0x449/0x710
[ 9735.363288][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9735.363288][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9735.363288][T12167]      ___sys_sendmsg+0xee/0x170
[ 9735.363288][T12167]      __sys_sendmsg+0xcd/0x170
[ 9735.363288][T12167]      do_syscall_64+0xc6/0x1e0
[ 9735.363288][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9735.363288][T12167] 
[ 9736.374716][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9736.375080][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9736.375080][   T10]      dst_init+0x84/0x4a0
[ 9736.375080][   T10]      dst_alloc+0x97/0x150
[ 9736.375080][   T10]      ip6_dst_alloc+0x23/0x90
[ 9736.375080][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9736.375080][   T10]      ip6_pol_route+0x56f/0x840
[ 9736.375080][   T10]      fib6_rule_lookup+0x334/0x630
[ 9736.375080][   T10]      ip6_route_output_flags+0x259/0x480
[ 9736.375080][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9736.375080][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9736.375080][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9736.375080][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9736.375080][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.375080][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.375080][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.375080][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.375080][   T10] 
[ 9736.376986][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.376986][   T10]      dst_init+0x84/0x4a0
[ 9736.376986][   T10]      dst_alloc+0x97/0x150
[ 9736.376986][   T10]      ip6_dst_alloc+0x23/0x90
[ 9736.376986][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9736.376986][   T10]      ip6_pol_route+0x56f/0x840
[ 9736.376986][   T10]      fib6_rule_lookup+0x334/0x630
[ 9736.376986][   T10]      ip6_route_output_flags+0x259/0x480
[ 9736.376986][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9736.376986][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9736.376986][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9736.376986][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9736.376986][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9736.376986][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.376986][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.376986][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.376986][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.376986][   T10] 
[ 9736.379010][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.379010][   T10]      dst_init+0x84/0x4a0
[ 9736.379010][   T10]      dst_alloc+0x97/0x150
[ 9736.379010][   T10]      ip6_dst_alloc+0x23/0x90
[ 9736.379010][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9736.379010][   T10]      ip6_pol_route+0x56f/0x840
[ 9736.379010][   T10]      fib6_rule_lookup+0x334/0x630
[ 9736.379010][   T10]      ip6_route_output_flags+0x259/0x480
[ 9736.379010][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9736.379010][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9736.379010][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9736.379010][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9736.379010][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9736.379010][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.379010][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.379010][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.379010][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.379010][   T10] 
[ 9736.381033][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.381033][   T10]      netdev_get_by_index+0x5e/0x80
[ 9736.381033][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9736.381033][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9736.381033][   T10]      ip6_route_add+0x1c/0x140
[ 9736.381033][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9736.381033][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9736.381033][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9736.381033][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9736.381033][   T10]      netlink_rcv_skb+0x130/0x360
[ 9736.381033][   T10]      netlink_unicast+0x449/0x710
[ 9736.381033][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9736.381033][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9736.381033][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.381033][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.381033][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.381033][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.381033][   T10] 
[ 9736.383046][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.383046][   T10]      netdev_get_by_index+0x5e/0x80
[ 9736.383046][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9736.383046][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9736.383046][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9736.383046][   T10]      ipv6_add_addr+0x411/0x2000
[ 9736.383046][   T10]      inet6_addr_add+0x30e/0xa40
[ 9736.383046][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9736.383046][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9736.383046][   T10]      netlink_rcv_skb+0x130/0x360
[ 9736.383046][   T10]      netlink_unicast+0x449/0x710
[ 9736.383046][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9736.383046][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9736.383046][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.383046][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.383046][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.383046][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.383046][   T10] 
[ 9736.385055][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.385055][   T10]      netdev_get_by_index+0x5e/0x80
[ 9736.385055][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9736.385055][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9736.385055][   T10]      ip6_route_add+0x1c/0x140
[ 9736.385055][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9736.385055][   T10]      addrconf_add_dev+0xe2/0x170
[ 9736.385055][   T10]      inet6_addr_add+0x12f/0xa40
[ 9736.385055][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9736.385055][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9736.385055][   T10]      netlink_rcv_skb+0x130/0x360
[ 9736.385055][   T10]      netlink_unicast+0x449/0x710
[ 9736.385055][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9736.385055][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9736.385055][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.385055][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.385055][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.385055][   T10] 
[ 9736.387046][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.387046][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9736.387046][   T10]      ipv6_find_idev+0x102/0x170
[ 9736.387046][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9736.387046][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9736.387046][   T10]      netlink_rcv_skb+0x130/0x360
[ 9736.387046][   T10]      netlink_unicast+0x449/0x710
[ 9736.387046][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9736.387046][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9736.387046][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.387046][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.387046][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.387046][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.387046][   T10] 
[ 9736.388611][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9736.388611][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9736.388611][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9736.388611][   T10]      ipv6_find_idev+0x102/0x170
[ 9736.388611][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9736.388611][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9736.388611][   T10]      netlink_rcv_skb+0x130/0x360
[ 9736.388611][   T10]      netlink_unicast+0x449/0x710
[ 9736.388611][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9736.388611][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9736.388611][   T10]      ___sys_sendmsg+0xee/0x170
[ 9736.388611][   T10]      __sys_sendmsg+0xcd/0x170
[ 9736.388611][   T10]      do_syscall_64+0xc6/0x1e0
[ 9736.388611][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9736.388611][   T10] 
[ 9745.382835][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9745.383279][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9745.383279][T12167]      netdev_get_by_index+0x5e/0x80
[ 9745.383279][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9745.383279][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9745.383279][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9745.383279][T12167]      ipv6_add_addr+0x411/0x2000
[ 9745.383279][T12167]      inet6_addr_add+0x30e/0xa40
[ 9745.383279][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9745.383279][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9745.383279][T12167]      netlink_rcv_skb+0x130/0x360
[ 9745.383279][T12167]      netlink_unicast+0x449/0x710
[ 9745.383279][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9745.383279][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9745.383279][T12167]      ___sys_sendmsg+0xee/0x170
[ 9745.383279][T12167]      __sys_sendmsg+0xcd/0x170
[ 9745.383279][T12167]      do_syscall_64+0xc6/0x1e0
[ 9745.383279][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9745.383279][T12167] 
[ 9745.385581][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9745.385581][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9745.385581][T12167]      ipv6_find_idev+0x102/0x170
[ 9745.385581][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9745.385581][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9745.385581][T12167]      netlink_rcv_skb+0x130/0x360
[ 9745.385581][T12167]      netlink_unicast+0x449/0x710
[ 9745.385581][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9745.385581][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9745.385581][T12167]      ___sys_sendmsg+0xee/0x170
[ 9745.385581][T12167]      __sys_sendmsg+0xcd/0x170
[ 9745.385581][T12167]      do_syscall_64+0xc6/0x1e0
[ 9745.385581][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9745.385581][T12167] 
[ 9745.387356][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9745.387356][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9745.387356][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9745.387356][T12167]      ipv6_find_idev+0x102/0x170
[ 9745.387356][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9745.387356][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9745.387356][T12167]      netlink_rcv_skb+0x130/0x360
[ 9745.387356][T12167]      netlink_unicast+0x449/0x710
[ 9745.387356][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9745.387356][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9745.387356][T12167]      ___sys_sendmsg+0xee/0x170
[ 9745.387356][T12167]      __sys_sendmsg+0xcd/0x170
[ 9745.387356][T12167]      do_syscall_64+0xc6/0x1e0
[ 9745.387356][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9745.387356][T12167] 
[ 9746.406827][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9746.407192][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9746.407192][   T10]      dst_init+0x84/0x4a0
[ 9746.407192][   T10]      dst_alloc+0x97/0x150
[ 9746.407192][   T10]      ip6_dst_alloc+0x23/0x90
[ 9746.407192][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9746.407192][   T10]      ip6_pol_route+0x56f/0x840
[ 9746.407192][   T10]      fib6_rule_lookup+0x334/0x630
[ 9746.407192][   T10]      ip6_route_output_flags+0x259/0x480
[ 9746.407192][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9746.407192][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9746.407192][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9746.407192][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9746.407192][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.407192][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.407192][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.407192][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.407192][   T10] 
[ 9746.409106][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.409106][   T10]      dst_init+0x84/0x4a0
[ 9746.409106][   T10]      dst_alloc+0x97/0x150
[ 9746.409106][   T10]      ip6_dst_alloc+0x23/0x90
[ 9746.409106][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9746.409106][   T10]      ip6_pol_route+0x56f/0x840
[ 9746.409106][   T10]      fib6_rule_lookup+0x334/0x630
[ 9746.409106][   T10]      ip6_route_output_flags+0x259/0x480
[ 9746.409106][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9746.409106][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9746.409106][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9746.409106][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9746.409106][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9746.409106][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.409106][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.409106][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.409106][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.409106][   T10] 
[ 9746.411132][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.411132][   T10]      dst_init+0x84/0x4a0
[ 9746.411132][   T10]      dst_alloc+0x97/0x150
[ 9746.411132][   T10]      ip6_dst_alloc+0x23/0x90
[ 9746.411132][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9746.411132][   T10]      ip6_pol_route+0x56f/0x840
[ 9746.411132][   T10]      fib6_rule_lookup+0x334/0x630
[ 9746.411132][   T10]      ip6_route_output_flags+0x259/0x480
[ 9746.411132][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9746.411132][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9746.411132][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9746.411132][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9746.411132][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9746.411132][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.411132][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.411132][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.411132][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.411132][   T10] 
[ 9746.413138][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.413138][   T10]      netdev_get_by_index+0x5e/0x80
[ 9746.413138][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9746.413138][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9746.413138][   T10]      ip6_route_add+0x1c/0x140
[ 9746.413138][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9746.413138][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9746.413138][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9746.413138][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9746.413138][   T10]      netlink_rcv_skb+0x130/0x360
[ 9746.413138][   T10]      netlink_unicast+0x449/0x710
[ 9746.413138][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9746.413138][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9746.413138][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.413138][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.413138][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.413138][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.413138][   T10] 
[ 9746.415177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.415177][   T10]      netdev_get_by_index+0x5e/0x80
[ 9746.415177][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9746.415177][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9746.415177][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9746.415177][   T10]      ipv6_add_addr+0x411/0x2000
[ 9746.415177][   T10]      inet6_addr_add+0x30e/0xa40
[ 9746.415177][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9746.415177][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9746.415177][   T10]      netlink_rcv_skb+0x130/0x360
[ 9746.415177][   T10]      netlink_unicast+0x449/0x710
[ 9746.415177][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9746.415177][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9746.415177][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.415177][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.415177][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.415177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.415177][   T10] 
[ 9746.417193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.417193][   T10]      netdev_get_by_index+0x5e/0x80
[ 9746.417193][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9746.417193][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9746.417193][   T10]      ip6_route_add+0x1c/0x140
[ 9746.417193][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9746.417193][   T10]      addrconf_add_dev+0xe2/0x170
[ 9746.417193][   T10]      inet6_addr_add+0x12f/0xa40
[ 9746.417193][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9746.417193][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9746.417193][   T10]      netlink_rcv_skb+0x130/0x360
[ 9746.417193][   T10]      netlink_unicast+0x449/0x710
[ 9746.417193][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9746.417193][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9746.417193][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.417193][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.417193][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.417193][   T10] 
[ 9746.419187][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.419187][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9746.419187][   T10]      ipv6_find_idev+0x102/0x170
[ 9746.419187][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9746.419187][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9746.419187][   T10]      netlink_rcv_skb+0x130/0x360
[ 9746.419187][   T10]      netlink_unicast+0x449/0x710
[ 9746.419187][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9746.419187][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9746.419187][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.419187][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.419187][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.419187][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.419187][   T10] 
[ 9746.420754][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9746.420754][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9746.420754][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9746.420754][   T10]      ipv6_find_idev+0x102/0x170
[ 9746.420754][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9746.420754][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9746.420754][   T10]      netlink_rcv_skb+0x130/0x360
[ 9746.420754][   T10]      netlink_unicast+0x449/0x710
[ 9746.420754][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9746.420754][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9746.420754][   T10]      ___sys_sendmsg+0xee/0x170
[ 9746.420754][   T10]      __sys_sendmsg+0xcd/0x170
[ 9746.420754][   T10]      do_syscall_64+0xc6/0x1e0
[ 9746.420754][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9746.420754][   T10] 
[ 9755.630836][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9755.631273][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9755.631273][T12167]      netdev_get_by_index+0x5e/0x80
[ 9755.631273][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9755.631273][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9755.631273][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9755.631273][T12167]      ipv6_add_addr+0x411/0x2000
[ 9755.631273][T12167]      inet6_addr_add+0x30e/0xa40
[ 9755.631273][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9755.631273][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9755.631273][T12167]      netlink_rcv_skb+0x130/0x360
[ 9755.631273][T12167]      netlink_unicast+0x449/0x710
[ 9755.631273][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9755.631273][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9755.631273][T12167]      ___sys_sendmsg+0xee/0x170
[ 9755.631273][T12167]      __sys_sendmsg+0xcd/0x170
[ 9755.631273][T12167]      do_syscall_64+0xc6/0x1e0
[ 9755.631273][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9755.631273][T12167] 
[ 9755.633555][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9755.633555][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9755.633555][T12167]      ipv6_find_idev+0x102/0x170
[ 9755.633555][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9755.633555][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9755.633555][T12167]      netlink_rcv_skb+0x130/0x360
[ 9755.633555][T12167]      netlink_unicast+0x449/0x710
[ 9755.633555][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9755.633555][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9755.633555][T12167]      ___sys_sendmsg+0xee/0x170
[ 9755.633555][T12167]      __sys_sendmsg+0xcd/0x170
[ 9755.633555][T12167]      do_syscall_64+0xc6/0x1e0
[ 9755.633555][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9755.633555][T12167] 
[ 9755.635309][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9755.635309][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9755.635309][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9755.635309][T12167]      ipv6_find_idev+0x102/0x170
[ 9755.635309][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9755.635309][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9755.635309][T12167]      netlink_rcv_skb+0x130/0x360
[ 9755.635309][T12167]      netlink_unicast+0x449/0x710
[ 9755.635309][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9755.635309][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9755.635309][T12167]      ___sys_sendmsg+0xee/0x170
[ 9755.635309][T12167]      __sys_sendmsg+0xcd/0x170
[ 9755.635309][T12167]      do_syscall_64+0xc6/0x1e0
[ 9755.635309][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9755.635309][T12167] 
[ 9756.662818][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9756.663183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9756.663183][   T10]      dst_init+0x84/0x4a0
[ 9756.663183][   T10]      dst_alloc+0x97/0x150
[ 9756.663183][   T10]      ip6_dst_alloc+0x23/0x90
[ 9756.663183][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9756.663183][   T10]      ip6_pol_route+0x56f/0x840
[ 9756.663183][   T10]      fib6_rule_lookup+0x334/0x630
[ 9756.663183][   T10]      ip6_route_output_flags+0x259/0x480
[ 9756.663183][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9756.663183][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9756.663183][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9756.663183][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9756.663183][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.663183][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.663183][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.663183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.663183][   T10] 
[ 9756.665121][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.665121][   T10]      dst_init+0x84/0x4a0
[ 9756.665121][   T10]      dst_alloc+0x97/0x150
[ 9756.665121][   T10]      ip6_dst_alloc+0x23/0x90
[ 9756.665121][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9756.665121][   T10]      ip6_pol_route+0x56f/0x840
[ 9756.665121][   T10]      fib6_rule_lookup+0x334/0x630
[ 9756.665121][   T10]      ip6_route_output_flags+0x259/0x480
[ 9756.665121][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9756.665121][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9756.665121][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9756.665121][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9756.665121][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9756.665121][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.665121][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.665121][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.665121][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.665121][   T10] 
[ 9756.667148][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.667148][   T10]      dst_init+0x84/0x4a0
[ 9756.667148][   T10]      dst_alloc+0x97/0x150
[ 9756.667148][   T10]      ip6_dst_alloc+0x23/0x90
[ 9756.667148][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9756.667148][   T10]      ip6_pol_route+0x56f/0x840
[ 9756.667148][   T10]      fib6_rule_lookup+0x334/0x630
[ 9756.667148][   T10]      ip6_route_output_flags+0x259/0x480
[ 9756.667148][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9756.667148][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9756.667148][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9756.667148][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9756.667148][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9756.667148][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.667148][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.667148][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.667148][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.667148][   T10] 
[ 9756.669177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.669177][   T10]      netdev_get_by_index+0x5e/0x80
[ 9756.669177][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9756.669177][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9756.669177][   T10]      ip6_route_add+0x1c/0x140
[ 9756.669177][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9756.669177][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9756.669177][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9756.669177][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9756.669177][   T10]      netlink_rcv_skb+0x130/0x360
[ 9756.669177][   T10]      netlink_unicast+0x449/0x710
[ 9756.669177][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9756.669177][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9756.669177][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.669177][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.669177][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.669177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.669177][   T10] 
[ 9756.671233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.671233][   T10]      netdev_get_by_index+0x5e/0x80
[ 9756.671233][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9756.671233][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9756.671233][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9756.671233][   T10]      ipv6_add_addr+0x411/0x2000
[ 9756.671233][   T10]      inet6_addr_add+0x30e/0xa40
[ 9756.671233][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9756.671233][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9756.671233][   T10]      netlink_rcv_skb+0x130/0x360
[ 9756.671233][   T10]      netlink_unicast+0x449/0x710
[ 9756.671233][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9756.671233][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9756.671233][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.671233][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.671233][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.671233][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.671233][   T10] 
[ 9756.673271][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.673271][   T10]      netdev_get_by_index+0x5e/0x80
[ 9756.673271][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9756.673271][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9756.673271][   T10]      ip6_route_add+0x1c/0x140
[ 9756.673271][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9756.673271][   T10]      addrconf_add_dev+0xe2/0x170
[ 9756.673271][   T10]      inet6_addr_add+0x12f/0xa40
[ 9756.673271][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9756.673271][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9756.673271][   T10]      netlink_rcv_skb+0x130/0x360
[ 9756.673271][   T10]      netlink_unicast+0x449/0x710
[ 9756.673271][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9756.673271][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9756.673271][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.673271][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.673271][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.673271][   T10] 
[ 9756.675269][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.675269][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9756.675269][   T10]      ipv6_find_idev+0x102/0x170
[ 9756.675269][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9756.675269][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9756.675269][   T10]      netlink_rcv_skb+0x130/0x360
[ 9756.675269][   T10]      netlink_unicast+0x449/0x710
[ 9756.675269][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9756.675269][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9756.675269][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.675269][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.675269][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.675269][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.675269][   T10] 
[ 9756.676838][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9756.676838][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9756.676838][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9756.676838][   T10]      ipv6_find_idev+0x102/0x170
[ 9756.676838][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9756.676838][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9756.676838][   T10]      netlink_rcv_skb+0x130/0x360
[ 9756.676838][   T10]      netlink_unicast+0x449/0x710
[ 9756.676838][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9756.676838][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9756.676838][   T10]      ___sys_sendmsg+0xee/0x170
[ 9756.676838][   T10]      __sys_sendmsg+0xcd/0x170
[ 9756.676838][   T10]      do_syscall_64+0xc6/0x1e0
[ 9756.676838][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9756.676838][   T10] 
[ 9765.878820][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9765.879265][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9765.879265][T12167]      netdev_get_by_index+0x5e/0x80
[ 9765.879265][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9765.879265][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9765.879265][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9765.879265][T12167]      ipv6_add_addr+0x411/0x2000
[ 9765.879265][T12167]      inet6_addr_add+0x30e/0xa40
[ 9765.879265][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9765.879265][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9765.879265][T12167]      netlink_rcv_skb+0x130/0x360
[ 9765.879265][T12167]      netlink_unicast+0x449/0x710
[ 9765.879265][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9765.879265][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9765.879265][T12167]      ___sys_sendmsg+0xee/0x170
[ 9765.879265][T12167]      __sys_sendmsg+0xcd/0x170
[ 9765.879265][T12167]      do_syscall_64+0xc6/0x1e0
[ 9765.879265][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9765.879265][T12167] 
[ 9765.881595][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9765.881595][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9765.881595][T12167]      ipv6_find_idev+0x102/0x170
[ 9765.881595][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9765.881595][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9765.881595][T12167]      netlink_rcv_skb+0x130/0x360
[ 9765.881595][T12167]      netlink_unicast+0x449/0x710
[ 9765.881595][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9765.881595][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9765.881595][T12167]      ___sys_sendmsg+0xee/0x170
[ 9765.881595][T12167]      __sys_sendmsg+0xcd/0x170
[ 9765.881595][T12167]      do_syscall_64+0xc6/0x1e0
[ 9765.881595][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9765.881595][T12167] 
[ 9765.883363][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9765.883363][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9765.883363][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9765.883363][T12167]      ipv6_find_idev+0x102/0x170
[ 9765.883363][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9765.883363][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9765.883363][T12167]      netlink_rcv_skb+0x130/0x360
[ 9765.883363][T12167]      netlink_unicast+0x449/0x710
[ 9765.883363][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9765.883363][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9765.883363][T12167]      ___sys_sendmsg+0xee/0x170
[ 9765.883363][T12167]      __sys_sendmsg+0xcd/0x170
[ 9765.883363][T12167]      do_syscall_64+0xc6/0x1e0
[ 9765.883363][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9765.883363][T12167] 
[ 9766.918810][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9766.919193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9766.919193][   T10]      dst_init+0x84/0x4a0
[ 9766.919193][   T10]      dst_alloc+0x97/0x150
[ 9766.919193][   T10]      ip6_dst_alloc+0x23/0x90
[ 9766.919193][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9766.919193][   T10]      ip6_pol_route+0x56f/0x840
[ 9766.919193][   T10]      fib6_rule_lookup+0x334/0x630
[ 9766.919193][   T10]      ip6_route_output_flags+0x259/0x480
[ 9766.919193][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9766.919193][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9766.919193][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9766.919193][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9766.919193][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.919193][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.919193][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.919193][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.919193][   T10] 
[ 9766.921170][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.921170][   T10]      dst_init+0x84/0x4a0
[ 9766.921170][   T10]      dst_alloc+0x97/0x150
[ 9766.921170][   T10]      ip6_dst_alloc+0x23/0x90
[ 9766.921170][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9766.921170][   T10]      ip6_pol_route+0x56f/0x840
[ 9766.921170][   T10]      fib6_rule_lookup+0x334/0x630
[ 9766.921170][   T10]      ip6_route_output_flags+0x259/0x480
[ 9766.921170][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9766.921170][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9766.921170][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9766.921170][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9766.921170][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9766.921170][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.921170][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.921170][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.921170][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.921170][   T10] 
[ 9766.923249][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.923249][   T10]      dst_init+0x84/0x4a0
[ 9766.923249][   T10]      dst_alloc+0x97/0x150
[ 9766.923249][   T10]      ip6_dst_alloc+0x23/0x90
[ 9766.923249][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9766.923249][   T10]      ip6_pol_route+0x56f/0x840
[ 9766.923249][   T10]      fib6_rule_lookup+0x334/0x630
[ 9766.923249][   T10]      ip6_route_output_flags+0x259/0x480
[ 9766.923249][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9766.923249][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9766.923249][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9766.923249][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9766.923249][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9766.923249][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.923249][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.923249][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.923249][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.923249][   T10] 
[ 9766.925327][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.925327][   T10]      netdev_get_by_index+0x5e/0x80
[ 9766.925327][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9766.925327][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9766.925327][   T10]      ip6_route_add+0x1c/0x140
[ 9766.925327][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9766.925327][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9766.925327][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9766.925327][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9766.925327][   T10]      netlink_rcv_skb+0x130/0x360
[ 9766.925327][   T10]      netlink_unicast+0x449/0x710
[ 9766.925327][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9766.925327][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9766.925327][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.925327][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.925327][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.925327][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.925327][   T10] 
[ 9766.927410][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.927410][   T10]      netdev_get_by_index+0x5e/0x80
[ 9766.927410][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9766.927410][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9766.927410][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9766.927410][   T10]      ipv6_add_addr+0x411/0x2000
[ 9766.927410][   T10]      inet6_addr_add+0x30e/0xa40
[ 9766.927410][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9766.927410][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9766.927410][   T10]      netlink_rcv_skb+0x130/0x360
[ 9766.927410][   T10]      netlink_unicast+0x449/0x710
[ 9766.927410][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9766.927410][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9766.927410][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.927410][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.927410][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.927410][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.927410][   T10] 
[ 9766.929487][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.929487][   T10]      netdev_get_by_index+0x5e/0x80
[ 9766.929487][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9766.929487][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9766.929487][   T10]      ip6_route_add+0x1c/0x140
[ 9766.929487][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9766.929487][   T10]      addrconf_add_dev+0xe2/0x170
[ 9766.929487][   T10]      inet6_addr_add+0x12f/0xa40
[ 9766.929487][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9766.929487][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9766.929487][   T10]      netlink_rcv_skb+0x130/0x360
[ 9766.929487][   T10]      netlink_unicast+0x449/0x710
[ 9766.929487][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9766.929487][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9766.929487][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.929487][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.929487][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.929487][   T10] 
[ 9766.931531][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.931531][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9766.931531][   T10]      ipv6_find_idev+0x102/0x170
[ 9766.931531][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9766.931531][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9766.931531][   T10]      netlink_rcv_skb+0x130/0x360
[ 9766.931531][   T10]      netlink_unicast+0x449/0x710
[ 9766.931531][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9766.931531][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9766.931531][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.931531][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.931531][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.931531][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.931531][   T10] 
[ 9766.933109][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9766.933109][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9766.933109][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9766.933109][   T10]      ipv6_find_idev+0x102/0x170
[ 9766.933109][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9766.933109][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9766.933109][   T10]      netlink_rcv_skb+0x130/0x360
[ 9766.933109][   T10]      netlink_unicast+0x449/0x710
[ 9766.933109][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9766.933109][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9766.933109][   T10]      ___sys_sendmsg+0xee/0x170
[ 9766.933109][   T10]      __sys_sendmsg+0xcd/0x170
[ 9766.933109][   T10]      do_syscall_64+0xc6/0x1e0
[ 9766.933109][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9766.933109][   T10] 
[ 9776.126821][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9776.127259][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9776.127259][T12167]      netdev_get_by_index+0x5e/0x80
[ 9776.127259][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9776.127259][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9776.127259][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9776.127259][T12167]      ipv6_add_addr+0x411/0x2000
[ 9776.127259][T12167]      inet6_addr_add+0x30e/0xa40
[ 9776.127259][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9776.127259][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9776.127259][T12167]      netlink_rcv_skb+0x130/0x360
[ 9776.127259][T12167]      netlink_unicast+0x449/0x710
[ 9776.127259][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9776.127259][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9776.127259][T12167]      ___sys_sendmsg+0xee/0x170
[ 9776.127259][T12167]      __sys_sendmsg+0xcd/0x170
[ 9776.127259][T12167]      do_syscall_64+0xc6/0x1e0
[ 9776.127259][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9776.127259][T12167] 
[ 9776.129544][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9776.129544][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9776.129544][T12167]      ipv6_find_idev+0x102/0x170
[ 9776.129544][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9776.129544][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9776.129544][T12167]      netlink_rcv_skb+0x130/0x360
[ 9776.129544][T12167]      netlink_unicast+0x449/0x710
[ 9776.129544][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9776.129544][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9776.129544][T12167]      ___sys_sendmsg+0xee/0x170
[ 9776.129544][T12167]      __sys_sendmsg+0xcd/0x170
[ 9776.129544][T12167]      do_syscall_64+0xc6/0x1e0
[ 9776.129544][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9776.129544][T12167] 
[ 9776.131315][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9776.131315][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9776.131315][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9776.131315][T12167]      ipv6_find_idev+0x102/0x170
[ 9776.131315][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9776.131315][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9776.131315][T12167]      netlink_rcv_skb+0x130/0x360
[ 9776.131315][T12167]      netlink_unicast+0x449/0x710
[ 9776.131315][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9776.131315][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9776.131315][T12167]      ___sys_sendmsg+0xee/0x170
[ 9776.131315][T12167]      __sys_sendmsg+0xcd/0x170
[ 9776.131315][T12167]      do_syscall_64+0xc6/0x1e0
[ 9776.131315][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9776.131315][T12167] 
[ 9777.182838][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9777.183273][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9777.183273][   T10]      dst_init+0x84/0x4a0
[ 9777.183273][   T10]      dst_alloc+0x97/0x150
[ 9777.183273][   T10]      ip6_dst_alloc+0x23/0x90
[ 9777.183273][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9777.183273][   T10]      ip6_pol_route+0x56f/0x840
[ 9777.183273][   T10]      fib6_rule_lookup+0x334/0x630
[ 9777.183273][   T10]      ip6_route_output_flags+0x259/0x480
[ 9777.183273][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9777.183273][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9777.183273][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9777.183273][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9777.183273][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.183273][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.183273][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.183273][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.183273][   T10] 
[ 9777.185204][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.185204][   T10]      dst_init+0x84/0x4a0
[ 9777.185204][   T10]      dst_alloc+0x97/0x150
[ 9777.185204][   T10]      ip6_dst_alloc+0x23/0x90
[ 9777.185204][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9777.185204][   T10]      ip6_pol_route+0x56f/0x840
[ 9777.185204][   T10]      fib6_rule_lookup+0x334/0x630
[ 9777.185204][   T10]      ip6_route_output_flags+0x259/0x480
[ 9777.185204][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9777.185204][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9777.185204][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9777.185204][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9777.185204][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9777.185204][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.185204][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.185204][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.185204][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.185204][   T10] 
[ 9777.187230][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.187230][   T10]      dst_init+0x84/0x4a0
[ 9777.187230][   T10]      dst_alloc+0x97/0x150
[ 9777.187230][   T10]      ip6_dst_alloc+0x23/0x90
[ 9777.187230][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9777.187230][   T10]      ip6_pol_route+0x56f/0x840
[ 9777.187230][   T10]      fib6_rule_lookup+0x334/0x630
[ 9777.187230][   T10]      ip6_route_output_flags+0x259/0x480
[ 9777.187230][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9777.187230][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9777.187230][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9777.187230][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9777.187230][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9777.187230][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.187230][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.187230][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.187230][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.187230][   T10] 
[ 9777.189257][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.189257][   T10]      netdev_get_by_index+0x5e/0x80
[ 9777.189257][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9777.189257][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9777.189257][   T10]      ip6_route_add+0x1c/0x140
[ 9777.189257][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9777.189257][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9777.189257][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9777.189257][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9777.189257][   T10]      netlink_rcv_skb+0x130/0x360
[ 9777.189257][   T10]      netlink_unicast+0x449/0x710
[ 9777.189257][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9777.189257][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9777.189257][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.189257][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.189257][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.189257][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.189257][   T10] 
[ 9777.191292][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.191292][   T10]      netdev_get_by_index+0x5e/0x80
[ 9777.191292][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9777.191292][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9777.191292][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9777.191292][   T10]      ipv6_add_addr+0x411/0x2000
[ 9777.191292][   T10]      inet6_addr_add+0x30e/0xa40
[ 9777.191292][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9777.191292][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9777.191292][   T10]      netlink_rcv_skb+0x130/0x360
[ 9777.191292][   T10]      netlink_unicast+0x449/0x710
[ 9777.191292][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9777.191292][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9777.191292][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.191292][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.191292][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.191292][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.191292][   T10] 
[ 9777.193321][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.193321][   T10]      netdev_get_by_index+0x5e/0x80
[ 9777.193321][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9777.193321][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9777.193321][   T10]      ip6_route_add+0x1c/0x140
[ 9777.193321][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9777.193321][   T10]      addrconf_add_dev+0xe2/0x170
[ 9777.193321][   T10]      inet6_addr_add+0x12f/0xa40
[ 9777.193321][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9777.193321][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9777.193321][   T10]      netlink_rcv_skb+0x130/0x360
[ 9777.193321][   T10]      netlink_unicast+0x449/0x710
[ 9777.193321][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9777.193321][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9777.193321][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.193321][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.193321][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.193321][   T10] 
[ 9777.195308][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.195308][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9777.195308][   T10]      ipv6_find_idev+0x102/0x170
[ 9777.195308][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9777.195308][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9777.195308][   T10]      netlink_rcv_skb+0x130/0x360
[ 9777.195308][   T10]      netlink_unicast+0x449/0x710
[ 9777.195308][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9777.195308][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9777.195308][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.195308][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.195308][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.195308][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.195308][   T10] 
[ 9777.196865][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9777.196865][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9777.196865][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9777.196865][   T10]      ipv6_find_idev+0x102/0x170
[ 9777.196865][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9777.196865][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9777.196865][   T10]      netlink_rcv_skb+0x130/0x360
[ 9777.196865][   T10]      netlink_unicast+0x449/0x710
[ 9777.196865][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9777.196865][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9777.196865][   T10]      ___sys_sendmsg+0xee/0x170
[ 9777.196865][   T10]      __sys_sendmsg+0xcd/0x170
[ 9777.196865][   T10]      do_syscall_64+0xc6/0x1e0
[ 9777.196865][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9777.196865][   T10] 
[ 9786.374828][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9786.375318][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9786.375318][T12167]      netdev_get_by_index+0x5e/0x80
[ 9786.375318][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9786.375318][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9786.375318][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9786.375318][T12167]      ipv6_add_addr+0x411/0x2000
[ 9786.375318][T12167]      inet6_addr_add+0x30e/0xa40
[ 9786.375318][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9786.375318][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9786.375318][T12167]      netlink_rcv_skb+0x130/0x360
[ 9786.375318][T12167]      netlink_unicast+0x449/0x710
[ 9786.375318][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9786.375318][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9786.375318][T12167]      ___sys_sendmsg+0xee/0x170
[ 9786.375318][T12167]      __sys_sendmsg+0xcd/0x170
[ 9786.375318][T12167]      do_syscall_64+0xc6/0x1e0
[ 9786.375318][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9786.375318][T12167] 
[ 9786.377629][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9786.377629][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9786.377629][T12167]      ipv6_find_idev+0x102/0x170
[ 9786.377629][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9786.377629][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9786.377629][T12167]      netlink_rcv_skb+0x130/0x360
[ 9786.377629][T12167]      netlink_unicast+0x449/0x710
[ 9786.377629][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9786.377629][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9786.377629][T12167]      ___sys_sendmsg+0xee/0x170
[ 9786.377629][T12167]      __sys_sendmsg+0xcd/0x170
[ 9786.377629][T12167]      do_syscall_64+0xc6/0x1e0
[ 9786.377629][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9786.377629][T12167] 
[ 9786.379376][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9786.379376][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9786.379376][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9786.379376][T12167]      ipv6_find_idev+0x102/0x170
[ 9786.379376][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9786.379376][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9786.379376][T12167]      netlink_rcv_skb+0x130/0x360
[ 9786.379376][T12167]      netlink_unicast+0x449/0x710
[ 9786.379376][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9786.379376][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9786.379376][T12167]      ___sys_sendmsg+0xee/0x170
[ 9786.379376][T12167]      __sys_sendmsg+0xcd/0x170
[ 9786.379376][T12167]      do_syscall_64+0xc6/0x1e0
[ 9786.379376][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9786.379376][T12167] 
[ 9787.198833][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9787.199240][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9787.199240][   T10]      dst_init+0x84/0x4a0
[ 9787.199240][   T10]      dst_alloc+0x97/0x150
[ 9787.199240][   T10]      ip6_dst_alloc+0x23/0x90
[ 9787.199240][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9787.199240][   T10]      ip6_pol_route+0x56f/0x840
[ 9787.199240][   T10]      fib6_rule_lookup+0x334/0x630
[ 9787.199240][   T10]      ip6_route_output_flags+0x259/0x480
[ 9787.199240][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9787.199240][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9787.199240][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9787.199240][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9787.199240][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.199240][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.199240][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.199240][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.199240][   T10] 
[ 9787.201156][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.201156][   T10]      dst_init+0x84/0x4a0
[ 9787.201156][   T10]      dst_alloc+0x97/0x150
[ 9787.201156][   T10]      ip6_dst_alloc+0x23/0x90
[ 9787.201156][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9787.201156][   T10]      ip6_pol_route+0x56f/0x840
[ 9787.201156][   T10]      fib6_rule_lookup+0x334/0x630
[ 9787.201156][   T10]      ip6_route_output_flags+0x259/0x480
[ 9787.201156][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9787.201156][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9787.201156][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9787.201156][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9787.201156][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9787.201156][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.201156][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.201156][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.201156][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.201156][   T10] 
[ 9787.203166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.203166][   T10]      dst_init+0x84/0x4a0
[ 9787.203166][   T10]      dst_alloc+0x97/0x150
[ 9787.203166][   T10]      ip6_dst_alloc+0x23/0x90
[ 9787.203166][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9787.203166][   T10]      ip6_pol_route+0x56f/0x840
[ 9787.203166][   T10]      fib6_rule_lookup+0x334/0x630
[ 9787.203166][   T10]      ip6_route_output_flags+0x259/0x480
[ 9787.203166][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9787.203166][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9787.203166][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9787.203166][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9787.203166][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9787.203166][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.203166][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.203166][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.203166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.203166][   T10] 
[ 9787.205174][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.205174][   T10]      netdev_get_by_index+0x5e/0x80
[ 9787.205174][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9787.205174][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9787.205174][   T10]      ip6_route_add+0x1c/0x140
[ 9787.205174][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9787.205174][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9787.205174][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9787.205174][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9787.205174][   T10]      netlink_rcv_skb+0x130/0x360
[ 9787.205174][   T10]      netlink_unicast+0x449/0x710
[ 9787.205174][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9787.205174][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9787.205174][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.205174][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.205174][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.205174][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.205174][   T10] 
[ 9787.207178][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.207178][   T10]      netdev_get_by_index+0x5e/0x80
[ 9787.207178][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9787.207178][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9787.207178][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9787.207178][   T10]      ipv6_add_addr+0x411/0x2000
[ 9787.207178][   T10]      inet6_addr_add+0x30e/0xa40
[ 9787.207178][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9787.207178][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9787.207178][   T10]      netlink_rcv_skb+0x130/0x360
[ 9787.207178][   T10]      netlink_unicast+0x449/0x710
[ 9787.207178][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9787.207178][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9787.207178][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.207178][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.207178][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.207178][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.207178][   T10] 
[ 9787.209181][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.209181][   T10]      netdev_get_by_index+0x5e/0x80
[ 9787.209181][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9787.209181][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9787.209181][   T10]      ip6_route_add+0x1c/0x140
[ 9787.209181][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9787.209181][   T10]      addrconf_add_dev+0xe2/0x170
[ 9787.209181][   T10]      inet6_addr_add+0x12f/0xa40
[ 9787.209181][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9787.209181][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9787.209181][   T10]      netlink_rcv_skb+0x130/0x360
[ 9787.209181][   T10]      netlink_unicast+0x449/0x710
[ 9787.209181][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9787.209181][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9787.209181][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.209181][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.209181][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.209181][   T10] 
[ 9787.211150][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.211150][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9787.211150][   T10]      ipv6_find_idev+0x102/0x170
[ 9787.211150][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9787.211150][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9787.211150][   T10]      netlink_rcv_skb+0x130/0x360
[ 9787.211150][   T10]      netlink_unicast+0x449/0x710
[ 9787.211150][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9787.211150][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9787.211150][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.211150][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.211150][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.211150][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.211150][   T10] 
[ 9787.212697][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9787.212697][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9787.212697][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9787.212697][   T10]      ipv6_find_idev+0x102/0x170
[ 9787.212697][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9787.212697][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9787.212697][   T10]      netlink_rcv_skb+0x130/0x360
[ 9787.212697][   T10]      netlink_unicast+0x449/0x710
[ 9787.212697][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9787.212697][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9787.212697][   T10]      ___sys_sendmsg+0xee/0x170
[ 9787.212697][   T10]      __sys_sendmsg+0xcd/0x170
[ 9787.212697][   T10]      do_syscall_64+0xc6/0x1e0
[ 9787.212697][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9787.212697][   T10] 
[ 9796.622799][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9796.623289][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9796.623289][T12167]      netdev_get_by_index+0x5e/0x80
[ 9796.623289][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9796.623289][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9796.623289][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9796.623289][T12167]      ipv6_add_addr+0x411/0x2000
[ 9796.623289][T12167]      inet6_addr_add+0x30e/0xa40
[ 9796.623289][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9796.623289][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9796.623289][T12167]      netlink_rcv_skb+0x130/0x360
[ 9796.623289][T12167]      netlink_unicast+0x449/0x710
[ 9796.623289][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9796.623289][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9796.623289][T12167]      ___sys_sendmsg+0xee/0x170
[ 9796.623289][T12167]      __sys_sendmsg+0xcd/0x170
[ 9796.623289][T12167]      do_syscall_64+0xc6/0x1e0
[ 9796.623289][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9796.623289][T12167] 
[ 9796.625578][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9796.625578][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9796.625578][T12167]      ipv6_find_idev+0x102/0x170
[ 9796.625578][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9796.625578][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9796.625578][T12167]      netlink_rcv_skb+0x130/0x360
[ 9796.625578][T12167]      netlink_unicast+0x449/0x710
[ 9796.625578][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9796.625578][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9796.625578][T12167]      ___sys_sendmsg+0xee/0x170
[ 9796.625578][T12167]      __sys_sendmsg+0xcd/0x170
[ 9796.625578][T12167]      do_syscall_64+0xc6/0x1e0
[ 9796.625578][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9796.625578][T12167] 
[ 9796.627319][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9796.627319][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9796.627319][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9796.627319][T12167]      ipv6_find_idev+0x102/0x170
[ 9796.627319][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9796.627319][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9796.627319][T12167]      netlink_rcv_skb+0x130/0x360
[ 9796.627319][T12167]      netlink_unicast+0x449/0x710
[ 9796.627319][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9796.627319][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9796.627319][T12167]      ___sys_sendmsg+0xee/0x170
[ 9796.627319][T12167]      __sys_sendmsg+0xcd/0x170
[ 9796.627319][T12167]      do_syscall_64+0xc6/0x1e0
[ 9796.627319][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9796.627319][T12167] 
[ 9797.462804][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9797.463241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9797.463241][   T10]      dst_init+0x84/0x4a0
[ 9797.463241][   T10]      dst_alloc+0x97/0x150
[ 9797.463241][   T10]      ip6_dst_alloc+0x23/0x90
[ 9797.463241][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9797.463241][   T10]      ip6_pol_route+0x56f/0x840
[ 9797.463241][   T10]      fib6_rule_lookup+0x334/0x630
[ 9797.463241][   T10]      ip6_route_output_flags+0x259/0x480
[ 9797.463241][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9797.463241][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9797.463241][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9797.463241][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9797.463241][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.463241][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.463241][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.463241][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.463241][   T10] 
[ 9797.465145][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.465145][   T10]      dst_init+0x84/0x4a0
[ 9797.465145][   T10]      dst_alloc+0x97/0x150
[ 9797.465145][   T10]      ip6_dst_alloc+0x23/0x90
[ 9797.465145][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9797.465145][   T10]      ip6_pol_route+0x56f/0x840
[ 9797.465145][   T10]      fib6_rule_lookup+0x334/0x630
[ 9797.465145][   T10]      ip6_route_output_flags+0x259/0x480
[ 9797.465145][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9797.465145][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9797.465145][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9797.465145][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9797.465145][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9797.465145][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.465145][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.465145][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.465145][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.465145][   T10] 
[ 9797.467152][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.467152][   T10]      dst_init+0x84/0x4a0
[ 9797.467152][   T10]      dst_alloc+0x97/0x150
[ 9797.467152][   T10]      ip6_dst_alloc+0x23/0x90
[ 9797.467152][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9797.467152][   T10]      ip6_pol_route+0x56f/0x840
[ 9797.467152][   T10]      fib6_rule_lookup+0x334/0x630
[ 9797.467152][   T10]      ip6_route_output_flags+0x259/0x480
[ 9797.467152][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9797.467152][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9797.467152][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9797.467152][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9797.467152][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9797.467152][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.467152][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.467152][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.467152][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.467152][   T10] 
[ 9797.469175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.469175][   T10]      netdev_get_by_index+0x5e/0x80
[ 9797.469175][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9797.469175][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9797.469175][   T10]      ip6_route_add+0x1c/0x140
[ 9797.469175][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9797.469175][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9797.469175][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9797.469175][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9797.469175][   T10]      netlink_rcv_skb+0x130/0x360
[ 9797.469175][   T10]      netlink_unicast+0x449/0x710
[ 9797.469175][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9797.469175][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9797.469175][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.469175][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.469175][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.469175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.469175][   T10] 
[ 9797.471196][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.471196][   T10]      netdev_get_by_index+0x5e/0x80
[ 9797.471196][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9797.471196][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9797.471196][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9797.471196][   T10]      ipv6_add_addr+0x411/0x2000
[ 9797.471196][   T10]      inet6_addr_add+0x30e/0xa40
[ 9797.471196][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9797.471196][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9797.471196][   T10]      netlink_rcv_skb+0x130/0x360
[ 9797.471196][   T10]      netlink_unicast+0x449/0x710
[ 9797.471196][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9797.471196][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9797.471196][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.471196][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.471196][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.471196][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.471196][   T10] 
[ 9797.473203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.473203][   T10]      netdev_get_by_index+0x5e/0x80
[ 9797.473203][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9797.473203][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9797.473203][   T10]      ip6_route_add+0x1c/0x140
[ 9797.473203][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9797.473203][   T10]      addrconf_add_dev+0xe2/0x170
[ 9797.473203][   T10]      inet6_addr_add+0x12f/0xa40
[ 9797.473203][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9797.473203][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9797.473203][   T10]      netlink_rcv_skb+0x130/0x360
[ 9797.473203][   T10]      netlink_unicast+0x449/0x710
[ 9797.473203][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9797.473203][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9797.473203][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.473203][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.473203][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.473203][   T10] 
[ 9797.475187][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.475187][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9797.475187][   T10]      ipv6_find_idev+0x102/0x170
[ 9797.475187][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9797.475187][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9797.475187][   T10]      netlink_rcv_skb+0x130/0x360
[ 9797.475187][   T10]      netlink_unicast+0x449/0x710
[ 9797.475187][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9797.475187][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9797.475187][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.475187][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.475187][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.475187][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.475187][   T10] 
[ 9797.476736][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9797.476736][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9797.476736][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9797.476736][   T10]      ipv6_find_idev+0x102/0x170
[ 9797.476736][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9797.476736][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9797.476736][   T10]      netlink_rcv_skb+0x130/0x360
[ 9797.476736][   T10]      netlink_unicast+0x449/0x710
[ 9797.476736][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9797.476736][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9797.476736][   T10]      ___sys_sendmsg+0xee/0x170
[ 9797.476736][   T10]      __sys_sendmsg+0xcd/0x170
[ 9797.476736][   T10]      do_syscall_64+0xc6/0x1e0
[ 9797.476736][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9797.476736][   T10] 
[ 9806.870800][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9806.871236][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9806.871236][T12167]      netdev_get_by_index+0x5e/0x80
[ 9806.871236][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9806.871236][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9806.871236][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9806.871236][T12167]      ipv6_add_addr+0x411/0x2000
[ 9806.871236][T12167]      inet6_addr_add+0x30e/0xa40
[ 9806.871236][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9806.871236][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9806.871236][T12167]      netlink_rcv_skb+0x130/0x360
[ 9806.871236][T12167]      netlink_unicast+0x449/0x710
[ 9806.871236][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9806.871236][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9806.871236][T12167]      ___sys_sendmsg+0xee/0x170
[ 9806.871236][T12167]      __sys_sendmsg+0xcd/0x170
[ 9806.871236][T12167]      do_syscall_64+0xc6/0x1e0
[ 9806.871236][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9806.871236][T12167] 
[ 9806.873534][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9806.873534][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9806.873534][T12167]      ipv6_find_idev+0x102/0x170
[ 9806.873534][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9806.873534][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9806.873534][T12167]      netlink_rcv_skb+0x130/0x360
[ 9806.873534][T12167]      netlink_unicast+0x449/0x710
[ 9806.873534][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9806.873534][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9806.873534][T12167]      ___sys_sendmsg+0xee/0x170
[ 9806.873534][T12167]      __sys_sendmsg+0xcd/0x170
[ 9806.873534][T12167]      do_syscall_64+0xc6/0x1e0
[ 9806.873534][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9806.873534][T12167] 
[ 9806.875284][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9806.875284][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9806.875284][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9806.875284][T12167]      ipv6_find_idev+0x102/0x170
[ 9806.875284][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9806.875284][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9806.875284][T12167]      netlink_rcv_skb+0x130/0x360
[ 9806.875284][T12167]      netlink_unicast+0x449/0x710
[ 9806.875284][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9806.875284][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9806.875284][T12167]      ___sys_sendmsg+0xee/0x170
[ 9806.875284][T12167]      __sys_sendmsg+0xcd/0x170
[ 9806.875284][T12167]      do_syscall_64+0xc6/0x1e0
[ 9806.875284][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9806.875284][T12167] 
[ 9807.726906][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9807.727323][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9807.727323][   T10]      dst_init+0x84/0x4a0
[ 9807.727323][   T10]      dst_alloc+0x97/0x150
[ 9807.727323][   T10]      ip6_dst_alloc+0x23/0x90
[ 9807.727323][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9807.727323][   T10]      ip6_pol_route+0x56f/0x840
[ 9807.727323][   T10]      fib6_rule_lookup+0x334/0x630
[ 9807.727323][   T10]      ip6_route_output_flags+0x259/0x480
[ 9807.727323][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9807.727323][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9807.727323][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9807.727323][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9807.727323][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.727323][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.727323][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.727323][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.727323][   T10] 
[ 9807.729275][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.729275][   T10]      dst_init+0x84/0x4a0
[ 9807.729275][   T10]      dst_alloc+0x97/0x150
[ 9807.729275][   T10]      ip6_dst_alloc+0x23/0x90
[ 9807.729275][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9807.729275][   T10]      ip6_pol_route+0x56f/0x840
[ 9807.729275][   T10]      fib6_rule_lookup+0x334/0x630
[ 9807.729275][   T10]      ip6_route_output_flags+0x259/0x480
[ 9807.729275][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9807.729275][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9807.729275][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9807.729275][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9807.729275][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9807.729275][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.729275][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.729275][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.729275][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.729275][   T10] 
[ 9807.731318][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.731318][   T10]      dst_init+0x84/0x4a0
[ 9807.731318][   T10]      dst_alloc+0x97/0x150
[ 9807.731318][   T10]      ip6_dst_alloc+0x23/0x90
[ 9807.731318][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9807.731318][   T10]      ip6_pol_route+0x56f/0x840
[ 9807.731318][   T10]      fib6_rule_lookup+0x334/0x630
[ 9807.731318][   T10]      ip6_route_output_flags+0x259/0x480
[ 9807.731318][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9807.731318][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9807.731318][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9807.731318][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9807.731318][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9807.731318][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.731318][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.731318][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.731318][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.731318][   T10] 
[ 9807.733356][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.733356][   T10]      netdev_get_by_index+0x5e/0x80
[ 9807.733356][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9807.733356][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9807.733356][   T10]      ip6_route_add+0x1c/0x140
[ 9807.733356][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9807.733356][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9807.733356][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9807.733356][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9807.733356][   T10]      netlink_rcv_skb+0x130/0x360
[ 9807.733356][   T10]      netlink_unicast+0x449/0x710
[ 9807.733356][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9807.733356][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9807.733356][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.733356][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.733356][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.733356][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.733356][   T10] 
[ 9807.735397][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.735397][   T10]      netdev_get_by_index+0x5e/0x80
[ 9807.735397][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9807.735397][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9807.735397][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9807.735397][   T10]      ipv6_add_addr+0x411/0x2000
[ 9807.735397][   T10]      inet6_addr_add+0x30e/0xa40
[ 9807.735397][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9807.735397][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9807.735397][   T10]      netlink_rcv_skb+0x130/0x360
[ 9807.735397][   T10]      netlink_unicast+0x449/0x710
[ 9807.735397][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9807.735397][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9807.735397][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.735397][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.735397][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.735397][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.735397][   T10] 
[ 9807.737420][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.737420][   T10]      netdev_get_by_index+0x5e/0x80
[ 9807.737420][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9807.737420][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9807.737420][   T10]      ip6_route_add+0x1c/0x140
[ 9807.737420][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9807.737420][   T10]      addrconf_add_dev+0xe2/0x170
[ 9807.737420][   T10]      inet6_addr_add+0x12f/0xa40
[ 9807.737420][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9807.737420][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9807.737420][   T10]      netlink_rcv_skb+0x130/0x360
[ 9807.737420][   T10]      netlink_unicast+0x449/0x710
[ 9807.737420][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9807.737420][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9807.737420][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.737420][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.737420][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.737420][   T10] 
[ 9807.739409][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.739409][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9807.739409][   T10]      ipv6_find_idev+0x102/0x170
[ 9807.739409][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9807.739409][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9807.739409][   T10]      netlink_rcv_skb+0x130/0x360
[ 9807.739409][   T10]      netlink_unicast+0x449/0x710
[ 9807.739409][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9807.739409][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9807.739409][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.739409][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.739409][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.739409][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.739409][   T10] 
[ 9807.740982][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9807.740982][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9807.740982][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9807.740982][   T10]      ipv6_find_idev+0x102/0x170
[ 9807.740982][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9807.740982][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9807.740982][   T10]      netlink_rcv_skb+0x130/0x360
[ 9807.740982][   T10]      netlink_unicast+0x449/0x710
[ 9807.740982][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9807.740982][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9807.740982][   T10]      ___sys_sendmsg+0xee/0x170
[ 9807.740982][   T10]      __sys_sendmsg+0xcd/0x170
[ 9807.740982][   T10]      do_syscall_64+0xc6/0x1e0
[ 9807.740982][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9807.740982][   T10] 
[ 9817.126874][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9817.127326][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9817.127326][T12167]      netdev_get_by_index+0x5e/0x80
[ 9817.127326][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9817.127326][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9817.127326][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9817.127326][T12167]      ipv6_add_addr+0x411/0x2000
[ 9817.127326][T12167]      inet6_addr_add+0x30e/0xa40
[ 9817.127326][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9817.127326][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9817.127326][T12167]      netlink_rcv_skb+0x130/0x360
[ 9817.127326][T12167]      netlink_unicast+0x449/0x710
[ 9817.127326][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9817.127326][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9817.127326][T12167]      ___sys_sendmsg+0xee/0x170
[ 9817.127326][T12167]      __sys_sendmsg+0xcd/0x170
[ 9817.127326][T12167]      do_syscall_64+0xc6/0x1e0
[ 9817.127326][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.127326][T12167] 
[ 9817.129633][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9817.129633][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9817.129633][T12167]      ipv6_find_idev+0x102/0x170
[ 9817.129633][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9817.129633][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9817.129633][T12167]      netlink_rcv_skb+0x130/0x360
[ 9817.129633][T12167]      netlink_unicast+0x449/0x710
[ 9817.129633][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9817.129633][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9817.129633][T12167]      ___sys_sendmsg+0xee/0x170
[ 9817.129633][T12167]      __sys_sendmsg+0xcd/0x170
[ 9817.129633][T12167]      do_syscall_64+0xc6/0x1e0
[ 9817.129633][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.129633][T12167] 
[ 9817.131402][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9817.131402][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9817.131402][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9817.131402][T12167]      ipv6_find_idev+0x102/0x170
[ 9817.131402][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9817.131402][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9817.131402][T12167]      netlink_rcv_skb+0x130/0x360
[ 9817.131402][T12167]      netlink_unicast+0x449/0x710
[ 9817.131402][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9817.131402][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9817.131402][T12167]      ___sys_sendmsg+0xee/0x170
[ 9817.131402][T12167]      __sys_sendmsg+0xcd/0x170
[ 9817.131402][T12167]      do_syscall_64+0xc6/0x1e0
[ 9817.131402][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.131402][T12167] 
[ 9817.990805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9817.991179][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9817.991179][   T10]      dst_init+0x84/0x4a0
[ 9817.991179][   T10]      dst_alloc+0x97/0x150
[ 9817.991179][   T10]      ip6_dst_alloc+0x23/0x90
[ 9817.991179][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9817.991179][   T10]      ip6_pol_route+0x56f/0x840
[ 9817.991179][   T10]      fib6_rule_lookup+0x334/0x630
[ 9817.991179][   T10]      ip6_route_output_flags+0x259/0x480
[ 9817.991179][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9817.991179][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9817.991179][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9817.991179][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9817.991179][   T10]      ___sys_sendmsg+0xee/0x170
[ 9817.991179][   T10]      __sys_sendmsg+0xcd/0x170
[ 9817.991179][   T10]      do_syscall_64+0xc6/0x1e0
[ 9817.991179][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.991179][   T10] 
[ 9817.993112][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9817.993112][   T10]      dst_init+0x84/0x4a0
[ 9817.993112][   T10]      dst_alloc+0x97/0x150
[ 9817.993112][   T10]      ip6_dst_alloc+0x23/0x90
[ 9817.993112][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9817.993112][   T10]      ip6_pol_route+0x56f/0x840
[ 9817.993112][   T10]      fib6_rule_lookup+0x334/0x630
[ 9817.993112][   T10]      ip6_route_output_flags+0x259/0x480
[ 9817.993112][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9817.993112][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9817.993112][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9817.993112][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9817.993112][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9817.993112][   T10]      ___sys_sendmsg+0xee/0x170
[ 9817.993112][   T10]      __sys_sendmsg+0xcd/0x170
[ 9817.993112][   T10]      do_syscall_64+0xc6/0x1e0
[ 9817.993112][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.993112][   T10] 
[ 9817.995151][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9817.995151][   T10]      dst_init+0x84/0x4a0
[ 9817.995151][   T10]      dst_alloc+0x97/0x150
[ 9817.995151][   T10]      ip6_dst_alloc+0x23/0x90
[ 9817.995151][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9817.995151][   T10]      ip6_pol_route+0x56f/0x840
[ 9817.995151][   T10]      fib6_rule_lookup+0x334/0x630
[ 9817.995151][   T10]      ip6_route_output_flags+0x259/0x480
[ 9817.995151][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9817.995151][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9817.995151][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9817.995151][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9817.995151][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9817.995151][   T10]      ___sys_sendmsg+0xee/0x170
[ 9817.995151][   T10]      __sys_sendmsg+0xcd/0x170
[ 9817.995151][   T10]      do_syscall_64+0xc6/0x1e0
[ 9817.995151][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.995151][   T10] 
[ 9817.997183][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9817.997183][   T10]      netdev_get_by_index+0x5e/0x80
[ 9817.997183][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9817.997183][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9817.997183][   T10]      ip6_route_add+0x1c/0x140
[ 9817.997183][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9817.997183][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9817.997183][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9817.997183][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9817.997183][   T10]      netlink_rcv_skb+0x130/0x360
[ 9817.997183][   T10]      netlink_unicast+0x449/0x710
[ 9817.997183][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9817.997183][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9817.997183][   T10]      ___sys_sendmsg+0xee/0x170
[ 9817.997183][   T10]      __sys_sendmsg+0xcd/0x170
[ 9817.997183][   T10]      do_syscall_64+0xc6/0x1e0
[ 9817.997183][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.997183][   T10] 
[ 9817.999213][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9817.999213][   T10]      netdev_get_by_index+0x5e/0x80
[ 9817.999213][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9817.999213][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9817.999213][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9817.999213][   T10]      ipv6_add_addr+0x411/0x2000
[ 9817.999213][   T10]      inet6_addr_add+0x30e/0xa40
[ 9817.999213][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9817.999213][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9817.999213][   T10]      netlink_rcv_skb+0x130/0x360
[ 9817.999213][   T10]      netlink_unicast+0x449/0x710
[ 9817.999213][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9817.999213][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9817.999213][   T10]      ___sys_sendmsg+0xee/0x170
[ 9817.999213][   T10]      __sys_sendmsg+0xcd/0x170
[ 9817.999213][   T10]      do_syscall_64+0xc6/0x1e0
[ 9817.999213][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9817.999213][   T10] 
[ 9818.001256][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9818.001256][   T10]      netdev_get_by_index+0x5e/0x80
[ 9818.001256][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9818.001256][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9818.001256][   T10]      ip6_route_add+0x1c/0x140
[ 9818.001256][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9818.001256][   T10]      addrconf_add_dev+0xe2/0x170
[ 9818.001256][   T10]      inet6_addr_add+0x12f/0xa40
[ 9818.001256][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9818.001256][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9818.001256][   T10]      netlink_rcv_skb+0x130/0x360
[ 9818.001256][   T10]      netlink_unicast+0x449/0x710
[ 9818.001256][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9818.001256][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9818.001256][   T10]      ___sys_sendmsg+0xee/0x170
[ 9818.001256][   T10]      __sys_sendmsg+0xcd/0x170
[ 9818.001256][   T10]      do_syscall_64+0xc6/0x1e0
[ 9818.001256][   T10] 
[ 9818.003250][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9818.003250][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9818.003250][   T10]      ipv6_find_idev+0x102/0x170
[ 9818.003250][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9818.003250][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9818.003250][   T10]      netlink_rcv_skb+0x130/0x360
[ 9818.003250][   T10]      netlink_unicast+0x449/0x710
[ 9818.003250][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9818.003250][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9818.003250][   T10]      ___sys_sendmsg+0xee/0x170
[ 9818.003250][   T10]      __sys_sendmsg+0xcd/0x170
[ 9818.003250][   T10]      do_syscall_64+0xc6/0x1e0
[ 9818.003250][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9818.003250][   T10] 
[ 9818.004814][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9818.004814][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9818.004814][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9818.004814][   T10]      ipv6_find_idev+0x102/0x170
[ 9818.004814][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9818.004814][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9818.004814][   T10]      netlink_rcv_skb+0x130/0x360
[ 9818.004814][   T10]      netlink_unicast+0x449/0x710
[ 9818.004814][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9818.004814][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9818.004814][   T10]      ___sys_sendmsg+0xee/0x170
[ 9818.004814][   T10]      __sys_sendmsg+0xcd/0x170
[ 9818.004814][   T10]      do_syscall_64+0xc6/0x1e0
[ 9818.004814][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9818.004814][   T10] 
[ 9827.302804][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9827.303369][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9827.303369][T12167]      netdev_get_by_index+0x5e/0x80
[ 9827.303369][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9827.303369][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9827.303369][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9827.303369][T12167]      ipv6_add_addr+0x411/0x2000
[ 9827.303369][T12167]      inet6_addr_add+0x30e/0xa40
[ 9827.303369][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9827.303369][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9827.303369][T12167]      netlink_rcv_skb+0x130/0x360
[ 9827.303369][T12167]      netlink_unicast+0x449/0x710
[ 9827.303369][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9827.303369][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9827.303369][T12167]      ___sys_sendmsg+0xee/0x170
[ 9827.303369][T12167]      __sys_sendmsg+0xcd/0x170
[ 9827.303369][T12167]      do_syscall_64+0xc6/0x1e0
[ 9827.303369][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9827.303369][T12167] 
[ 9827.305682][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9827.305682][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9827.305682][T12167]      ipv6_find_idev+0x102/0x170
[ 9827.305682][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9827.305682][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9827.305682][T12167]      netlink_rcv_skb+0x130/0x360
[ 9827.305682][T12167]      netlink_unicast+0x449/0x710
[ 9827.305682][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9827.305682][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9827.305682][T12167]      ___sys_sendmsg+0xee/0x170
[ 9827.305682][T12167]      __sys_sendmsg+0xcd/0x170
[ 9827.305682][T12167]      do_syscall_64+0xc6/0x1e0
[ 9827.305682][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9827.305682][T12167] 
[ 9827.307458][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9827.307458][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9827.307458][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9827.307458][T12167]      ipv6_find_idev+0x102/0x170
[ 9827.307458][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9827.307458][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9827.307458][T12167]      netlink_rcv_skb+0x130/0x360
[ 9827.307458][T12167]      netlink_unicast+0x449/0x710
[ 9827.307458][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9827.307458][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9827.307458][T12167]      ___sys_sendmsg+0xee/0x170
[ 9827.307458][T12167]      __sys_sendmsg+0xcd/0x170
[ 9827.307458][T12167]      do_syscall_64+0xc6/0x1e0
[ 9827.307458][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9827.307458][T12167] 
[ 9828.062805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9828.063235][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9828.063235][   T10]      dst_init+0x84/0x4a0
[ 9828.063235][   T10]      dst_alloc+0x97/0x150
[ 9828.063235][   T10]      ip6_dst_alloc+0x23/0x90
[ 9828.063235][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9828.063235][   T10]      ip6_pol_route+0x56f/0x840
[ 9828.063235][   T10]      fib6_rule_lookup+0x334/0x630
[ 9828.063235][   T10]      ip6_route_output_flags+0x259/0x480
[ 9828.063235][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9828.063235][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9828.063235][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9828.063235][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9828.063235][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.063235][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.063235][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.063235][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.063235][   T10] 
[ 9828.065139][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.065139][   T10]      dst_init+0x84/0x4a0
[ 9828.065139][   T10]      dst_alloc+0x97/0x150
[ 9828.065139][   T10]      ip6_dst_alloc+0x23/0x90
[ 9828.065139][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9828.065139][   T10]      ip6_pol_route+0x56f/0x840
[ 9828.065139][   T10]      fib6_rule_lookup+0x334/0x630
[ 9828.065139][   T10]      ip6_route_output_flags+0x259/0x480
[ 9828.065139][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9828.065139][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9828.065139][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9828.065139][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9828.065139][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9828.065139][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.065139][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.065139][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.065139][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.065139][   T10] 
[ 9828.067142][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.067142][   T10]      dst_init+0x84/0x4a0
[ 9828.067142][   T10]      dst_alloc+0x97/0x150
[ 9828.067142][   T10]      ip6_dst_alloc+0x23/0x90
[ 9828.067142][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9828.067142][   T10]      ip6_pol_route+0x56f/0x840
[ 9828.067142][   T10]      fib6_rule_lookup+0x334/0x630
[ 9828.067142][   T10]      ip6_route_output_flags+0x259/0x480
[ 9828.067142][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9828.067142][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9828.067142][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9828.067142][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9828.067142][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9828.067142][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.067142][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.067142][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.067142][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.067142][   T10] 
[ 9828.069153][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.069153][   T10]      netdev_get_by_index+0x5e/0x80
[ 9828.069153][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9828.069153][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9828.069153][   T10]      ip6_route_add+0x1c/0x140
[ 9828.069153][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9828.069153][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9828.069153][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9828.069153][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9828.069153][   T10]      netlink_rcv_skb+0x130/0x360
[ 9828.069153][   T10]      netlink_unicast+0x449/0x710
[ 9828.069153][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9828.069153][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9828.069153][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.069153][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.069153][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.069153][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.069153][   T10] 
[ 9828.071177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.071177][   T10]      netdev_get_by_index+0x5e/0x80
[ 9828.071177][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9828.071177][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9828.071177][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9828.071177][   T10]      ipv6_add_addr+0x411/0x2000
[ 9828.071177][   T10]      inet6_addr_add+0x30e/0xa40
[ 9828.071177][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9828.071177][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9828.071177][   T10]      netlink_rcv_skb+0x130/0x360
[ 9828.071177][   T10]      netlink_unicast+0x449/0x710
[ 9828.071177][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9828.071177][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9828.071177][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.071177][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.071177][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.071177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.071177][   T10] 
[ 9828.073179][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.073179][   T10]      netdev_get_by_index+0x5e/0x80
[ 9828.073179][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9828.073179][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9828.073179][   T10]      ip6_route_add+0x1c/0x140
[ 9828.073179][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9828.073179][   T10]      addrconf_add_dev+0xe2/0x170
[ 9828.073179][   T10]      inet6_addr_add+0x12f/0xa40
[ 9828.073179][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9828.073179][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9828.073179][   T10]      netlink_rcv_skb+0x130/0x360
[ 9828.073179][   T10]      netlink_unicast+0x449/0x710
[ 9828.073179][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9828.073179][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9828.073179][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.073179][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.073179][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.073179][   T10] 
[ 9828.075164][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.075164][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9828.075164][   T10]      ipv6_find_idev+0x102/0x170
[ 9828.075164][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9828.075164][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9828.075164][   T10]      netlink_rcv_skb+0x130/0x360
[ 9828.075164][   T10]      netlink_unicast+0x449/0x710
[ 9828.075164][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9828.075164][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9828.075164][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.075164][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.075164][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.075164][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.075164][   T10] 
[ 9828.076712][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9828.076712][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9828.076712][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9828.076712][   T10]      ipv6_find_idev+0x102/0x170
[ 9828.076712][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9828.076712][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9828.076712][   T10]      netlink_rcv_skb+0x130/0x360
[ 9828.076712][   T10]      netlink_unicast+0x449/0x710
[ 9828.076712][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9828.076712][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9828.076712][   T10]      ___sys_sendmsg+0xee/0x170
[ 9828.076712][   T10]      __sys_sendmsg+0xcd/0x170
[ 9828.076712][   T10]      do_syscall_64+0xc6/0x1e0
[ 9828.076712][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9828.076712][   T10] 
[ 9831.718906][   T42] INFO: task modprobe:12646 blocked for more than 1105 seconds.
[ 9831.719235][   T42]       Not tainted 6.8.0-virtme #1
[ 9831.719355][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9831.719579][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9831.719861][   T42] Call Trace:
[ 9831.719959][   T42]  <TASK>
[ 9831.720029][   T42]  __schedule+0x705/0x1ac0
[ 9831.720166][   T42]  ? __pfx___schedule+0x10/0x10
[ 9831.720299][   T42]  ? schedule+0x1a5/0x210
[ 9831.720395][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9831.720527][   T42]  ? mark_lock+0x38/0x3e0
[ 9831.720626][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9831.720772][   T42]  ? schedule+0x1a5/0x210
[ 9831.720870][   T42]  schedule+0xdf/0x210
[ 9831.720965][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9831.721091][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9831.721220][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9831.721377][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9831.721501][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9831.721638][   T42]  ? lock_acquire+0x1c1/0x220
[ 9831.721769][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9831.721907][   T42]  down_write+0x1c9/0x200
[ 9831.722002][   T42]  ? __pfx_down_write+0x10/0x10
[ 9831.722124][   T42]  ? __pfx__printk+0x10/0x10
[ 9831.722251][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9831.722381][   T42]  register_pernet_subsys+0x1a/0x50
[ 9831.722504][   T42]  tcf_register_action+0xa3/0x600
[ 9831.722637][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9831.722806][   T42]  do_one_initcall+0xc8/0x3f0
[ 9831.722935][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9831.723061][   T42]  ? __create_object+0x5e/0xb0
[ 9831.723190][   T42]  ? kasan_unpoison+0x27/0x60
[ 9831.723319][   T42]  do_init_module+0x233/0x740
[ 9831.723452][   T42]  load_module+0x16b5/0x2350
[ 9831.723591][   T42]  ? __pfx_load_module+0x10/0x10
[ 9831.723727][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9831.723856][   T42]  ? kernel_read_file+0x300/0x520
[ 9831.723982][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9831.724115][   T42]  ? init_module_from_file+0xd2/0x130
[ 9831.724237][   T42]  init_module_from_file+0xd2/0x130
[ 9831.724362][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9831.724514][   T42]  ? __lock_release+0x103/0x460
[ 9831.724639][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9831.724800][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9831.724925][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9831.725051][   T42]  idempotent_init_module+0x342/0x620
[ 9831.725182][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9831.725353][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9831.725478][   T42]  do_syscall_64+0xc6/0x1e0
[ 9831.725607][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9831.725780][   T42] RIP: 0033:0x7fac120f1e5d
[ 9831.725908][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9831.726097][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9831.726281][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9831.726462][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9831.726644][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9831.726845][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9831.727041][   T42]  </TASK>
[ 9831.727136][   T42] 
[ 9831.727136][   T42] Showing all locks held in the system:
[ 9831.727314][   T42] 3 locks held by kworker/u16:0/10:
[ 9831.727433][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9831.727704][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9831.727924][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9831.728143][   T42] 1 lock held by khungtaskd/42:
[ 9831.728262][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9831.728485][   T42] 2 locks held by kworker/u17:1/44:
[ 9831.728607][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9831.728870][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9831.729155][   T42] 1 lock held by modprobe/12646:
[ 9831.729273][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9831.729519][   T42] 
[ 9831.729591][   T42] =============================================
[ 9831.729591][   T42] 
[ 9837.550816][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9837.551335][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9837.551335][T12167]      netdev_get_by_index+0x5e/0x80
[ 9837.551335][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9837.551335][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9837.551335][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9837.551335][T12167]      ipv6_add_addr+0x411/0x2000
[ 9837.551335][T12167]      inet6_addr_add+0x30e/0xa40
[ 9837.551335][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9837.551335][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9837.551335][T12167]      netlink_rcv_skb+0x130/0x360
[ 9837.551335][T12167]      netlink_unicast+0x449/0x710
[ 9837.551335][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9837.551335][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9837.551335][T12167]      ___sys_sendmsg+0xee/0x170
[ 9837.551335][T12167]      __sys_sendmsg+0xcd/0x170
[ 9837.551335][T12167]      do_syscall_64+0xc6/0x1e0
[ 9837.551335][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9837.551335][T12167] 
[ 9837.553630][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9837.553630][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9837.553630][T12167]      ipv6_find_idev+0x102/0x170
[ 9837.553630][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9837.553630][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9837.553630][T12167]      netlink_rcv_skb+0x130/0x360
[ 9837.553630][T12167]      netlink_unicast+0x449/0x710
[ 9837.553630][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9837.553630][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9837.553630][T12167]      ___sys_sendmsg+0xee/0x170
[ 9837.553630][T12167]      __sys_sendmsg+0xcd/0x170
[ 9837.553630][T12167]      do_syscall_64+0xc6/0x1e0
[ 9837.553630][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9837.553630][T12167] 
[ 9837.555395][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9837.555395][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9837.555395][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9837.555395][T12167]      ipv6_find_idev+0x102/0x170
[ 9837.555395][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9837.555395][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9837.555395][T12167]      netlink_rcv_skb+0x130/0x360
[ 9837.555395][T12167]      netlink_unicast+0x449/0x710
[ 9837.555395][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9837.555395][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9837.555395][T12167]      ___sys_sendmsg+0xee/0x170
[ 9837.555395][T12167]      __sys_sendmsg+0xcd/0x170
[ 9837.555395][T12167]      do_syscall_64+0xc6/0x1e0
[ 9837.555395][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9837.555395][T12167] 
[ 9838.078815][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9838.079233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9838.079233][   T10]      dst_init+0x84/0x4a0
[ 9838.079233][   T10]      dst_alloc+0x97/0x150
[ 9838.079233][   T10]      ip6_dst_alloc+0x23/0x90
[ 9838.079233][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9838.079233][   T10]      ip6_pol_route+0x56f/0x840
[ 9838.079233][   T10]      fib6_rule_lookup+0x334/0x630
[ 9838.079233][   T10]      ip6_route_output_flags+0x259/0x480
[ 9838.079233][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9838.079233][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9838.079233][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9838.079233][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9838.079233][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.079233][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.079233][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.079233][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.079233][   T10] 
[ 9838.081156][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.081156][   T10]      dst_init+0x84/0x4a0
[ 9838.081156][   T10]      dst_alloc+0x97/0x150
[ 9838.081156][   T10]      ip6_dst_alloc+0x23/0x90
[ 9838.081156][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9838.081156][   T10]      ip6_pol_route+0x56f/0x840
[ 9838.081156][   T10]      fib6_rule_lookup+0x334/0x630
[ 9838.081156][   T10]      ip6_route_output_flags+0x259/0x480
[ 9838.081156][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9838.081156][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9838.081156][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9838.081156][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9838.081156][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9838.081156][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.081156][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.081156][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.081156][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.081156][   T10] 
[ 9838.083166][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.083166][   T10]      dst_init+0x84/0x4a0
[ 9838.083166][   T10]      dst_alloc+0x97/0x150
[ 9838.083166][   T10]      ip6_dst_alloc+0x23/0x90
[ 9838.083166][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9838.083166][   T10]      ip6_pol_route+0x56f/0x840
[ 9838.083166][   T10]      fib6_rule_lookup+0x334/0x630
[ 9838.083166][   T10]      ip6_route_output_flags+0x259/0x480
[ 9838.083166][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9838.083166][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9838.083166][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9838.083166][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9838.083166][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9838.083166][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.083166][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.083166][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.083166][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.083166][   T10] 
[ 9838.085174][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.085174][   T10]      netdev_get_by_index+0x5e/0x80
[ 9838.085174][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9838.085174][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9838.085174][   T10]      ip6_route_add+0x1c/0x140
[ 9838.085174][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9838.085174][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9838.085174][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9838.085174][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9838.085174][   T10]      netlink_rcv_skb+0x130/0x360
[ 9838.085174][   T10]      netlink_unicast+0x449/0x710
[ 9838.085174][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9838.085174][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9838.085174][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.085174][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.085174][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.085174][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.085174][   T10] 
[ 9838.087188][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.087188][   T10]      netdev_get_by_index+0x5e/0x80
[ 9838.087188][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9838.087188][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9838.087188][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9838.087188][   T10]      ipv6_add_addr+0x411/0x2000
[ 9838.087188][   T10]      inet6_addr_add+0x30e/0xa40
[ 9838.087188][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9838.087188][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9838.087188][   T10]      netlink_rcv_skb+0x130/0x360
[ 9838.087188][   T10]      netlink_unicast+0x449/0x710
[ 9838.087188][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9838.087188][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9838.087188][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.087188][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.087188][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.087188][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.087188][   T10] 
[ 9838.089198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.089198][   T10]      netdev_get_by_index+0x5e/0x80
[ 9838.089198][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9838.089198][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9838.089198][   T10]      ip6_route_add+0x1c/0x140
[ 9838.089198][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9838.089198][   T10]      addrconf_add_dev+0xe2/0x170
[ 9838.089198][   T10]      inet6_addr_add+0x12f/0xa40
[ 9838.089198][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9838.089198][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9838.089198][   T10]      netlink_rcv_skb+0x130/0x360
[ 9838.089198][   T10]      netlink_unicast+0x449/0x710
[ 9838.089198][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9838.089198][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9838.089198][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.089198][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.089198][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.089198][   T10] 
[ 9838.091200][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.091200][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9838.091200][   T10]      ipv6_find_idev+0x102/0x170
[ 9838.091200][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9838.091200][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9838.091200][   T10]      netlink_rcv_skb+0x130/0x360
[ 9838.091200][   T10]      netlink_unicast+0x449/0x710
[ 9838.091200][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9838.091200][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9838.091200][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.091200][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.091200][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.091200][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.091200][   T10] 
[ 9838.092742][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9838.092742][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9838.092742][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9838.092742][   T10]      ipv6_find_idev+0x102/0x170
[ 9838.092742][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9838.092742][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9838.092742][   T10]      netlink_rcv_skb+0x130/0x360
[ 9838.092742][   T10]      netlink_unicast+0x449/0x710
[ 9838.092742][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9838.092742][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9838.092742][   T10]      ___sys_sendmsg+0xee/0x170
[ 9838.092742][   T10]      __sys_sendmsg+0xcd/0x170
[ 9838.092742][   T10]      do_syscall_64+0xc6/0x1e0
[ 9838.092742][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9838.092742][   T10] 
[ 9847.590802][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9847.591270][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9847.591270][T12167]      netdev_get_by_index+0x5e/0x80
[ 9847.591270][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9847.591270][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9847.591270][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9847.591270][T12167]      ipv6_add_addr+0x411/0x2000
[ 9847.591270][T12167]      inet6_addr_add+0x30e/0xa40
[ 9847.591270][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9847.591270][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9847.591270][T12167]      netlink_rcv_skb+0x130/0x360
[ 9847.591270][T12167]      netlink_unicast+0x449/0x710
[ 9847.591270][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9847.591270][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9847.591270][T12167]      ___sys_sendmsg+0xee/0x170
[ 9847.591270][T12167]      __sys_sendmsg+0xcd/0x170
[ 9847.591270][T12167]      do_syscall_64+0xc6/0x1e0
[ 9847.591270][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9847.591270][T12167] 
[ 9847.593590][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9847.593590][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9847.593590][T12167]      ipv6_find_idev+0x102/0x170
[ 9847.593590][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9847.593590][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9847.593590][T12167]      netlink_rcv_skb+0x130/0x360
[ 9847.593590][T12167]      netlink_unicast+0x449/0x710
[ 9847.593590][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9847.593590][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9847.593590][T12167]      ___sys_sendmsg+0xee/0x170
[ 9847.593590][T12167]      __sys_sendmsg+0xcd/0x170
[ 9847.593590][T12167]      do_syscall_64+0xc6/0x1e0
[ 9847.593590][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9847.593590][T12167] 
[ 9847.595356][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9847.595356][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9847.595356][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9847.595356][T12167]      ipv6_find_idev+0x102/0x170
[ 9847.595356][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9847.595356][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9847.595356][T12167]      netlink_rcv_skb+0x130/0x360
[ 9847.595356][T12167]      netlink_unicast+0x449/0x710
[ 9847.595356][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9847.595356][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9847.595356][T12167]      ___sys_sendmsg+0xee/0x170
[ 9847.595356][T12167]      __sys_sendmsg+0xcd/0x170
[ 9847.595356][T12167]      do_syscall_64+0xc6/0x1e0
[ 9847.595356][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9847.595356][T12167] 
[ 9848.102741][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9848.103086][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9848.103086][   T10]      dst_init+0x84/0x4a0
[ 9848.103086][   T10]      dst_alloc+0x97/0x150
[ 9848.103086][   T10]      ip6_dst_alloc+0x23/0x90
[ 9848.103086][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9848.103086][   T10]      ip6_pol_route+0x56f/0x840
[ 9848.103086][   T10]      fib6_rule_lookup+0x334/0x630
[ 9848.103086][   T10]      ip6_route_output_flags+0x259/0x480
[ 9848.103086][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9848.103086][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9848.103086][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9848.103086][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9848.103086][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.103086][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.103086][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.103086][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.103086][   T10] 
[ 9848.104990][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.104990][   T10]      dst_init+0x84/0x4a0
[ 9848.104990][   T10]      dst_alloc+0x97/0x150
[ 9848.104990][   T10]      ip6_dst_alloc+0x23/0x90
[ 9848.104990][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9848.104990][   T10]      ip6_pol_route+0x56f/0x840
[ 9848.104990][   T10]      fib6_rule_lookup+0x334/0x630
[ 9848.104990][   T10]      ip6_route_output_flags+0x259/0x480
[ 9848.104990][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9848.104990][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9848.104990][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9848.104990][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9848.104990][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9848.104990][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.104990][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.104990][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.104990][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.104990][   T10] 
[ 9848.106983][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.106983][   T10]      dst_init+0x84/0x4a0
[ 9848.106983][   T10]      dst_alloc+0x97/0x150
[ 9848.106983][   T10]      ip6_dst_alloc+0x23/0x90
[ 9848.106983][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9848.106983][   T10]      ip6_pol_route+0x56f/0x840
[ 9848.106983][   T10]      fib6_rule_lookup+0x334/0x630
[ 9848.106983][   T10]      ip6_route_output_flags+0x259/0x480
[ 9848.106983][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9848.106983][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9848.106983][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9848.106983][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9848.106983][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9848.106983][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.106983][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.106983][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.106983][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.106983][   T10] 
[ 9848.108986][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.108986][   T10]      netdev_get_by_index+0x5e/0x80
[ 9848.108986][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9848.108986][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9848.108986][   T10]      ip6_route_add+0x1c/0x140
[ 9848.108986][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9848.108986][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9848.108986][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9848.108986][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9848.108986][   T10]      netlink_rcv_skb+0x130/0x360
[ 9848.108986][   T10]      netlink_unicast+0x449/0x710
[ 9848.108986][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9848.108986][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9848.108986][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.108986][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.108986][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.108986][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.108986][   T10] 
[ 9848.111098][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.111098][   T10]      netdev_get_by_index+0x5e/0x80
[ 9848.111098][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9848.111098][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9848.111098][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9848.111098][   T10]      ipv6_add_addr+0x411/0x2000
[ 9848.111098][   T10]      inet6_addr_add+0x30e/0xa40
[ 9848.111098][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9848.111098][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9848.111098][   T10]      netlink_rcv_skb+0x130/0x360
[ 9848.111098][   T10]      netlink_unicast+0x449/0x710
[ 9848.111098][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9848.111098][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9848.111098][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.111098][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.111098][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.111098][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.111098][   T10] 
[ 9848.113093][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.113093][   T10]      netdev_get_by_index+0x5e/0x80
[ 9848.113093][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9848.113093][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9848.113093][   T10]      ip6_route_add+0x1c/0x140
[ 9848.113093][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9848.113093][   T10]      addrconf_add_dev+0xe2/0x170
[ 9848.113093][   T10]      inet6_addr_add+0x12f/0xa40
[ 9848.113093][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9848.113093][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9848.113093][   T10]      netlink_rcv_skb+0x130/0x360
[ 9848.113093][   T10]      netlink_unicast+0x449/0x710
[ 9848.113093][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9848.113093][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9848.113093][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.113093][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.113093][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.113093][   T10] 
[ 9848.115052][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.115052][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9848.115052][   T10]      ipv6_find_idev+0x102/0x170
[ 9848.115052][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9848.115052][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9848.115052][   T10]      netlink_rcv_skb+0x130/0x360
[ 9848.115052][   T10]      netlink_unicast+0x449/0x710
[ 9848.115052][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9848.115052][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9848.115052][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.115052][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.115052][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.115052][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.115052][   T10] 
[ 9848.116585][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9848.116585][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9848.116585][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9848.116585][   T10]      ipv6_find_idev+0x102/0x170
[ 9848.116585][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9848.116585][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9848.116585][   T10]      netlink_rcv_skb+0x130/0x360
[ 9848.116585][   T10]      netlink_unicast+0x449/0x710
[ 9848.116585][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9848.116585][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9848.116585][   T10]      ___sys_sendmsg+0xee/0x170
[ 9848.116585][   T10]      __sys_sendmsg+0xcd/0x170
[ 9848.116585][   T10]      do_syscall_64+0xc6/0x1e0
[ 9848.116585][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9848.116585][   T10] 
[ 9857.614878][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9857.615375][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9857.615375][T12167]      netdev_get_by_index+0x5e/0x80
[ 9857.615375][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9857.615375][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9857.615375][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9857.615375][T12167]      ipv6_add_addr+0x411/0x2000
[ 9857.615375][T12167]      inet6_addr_add+0x30e/0xa40
[ 9857.615375][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9857.615375][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9857.615375][T12167]      netlink_rcv_skb+0x130/0x360
[ 9857.615375][T12167]      netlink_unicast+0x449/0x710
[ 9857.615375][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9857.615375][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9857.615375][T12167]      ___sys_sendmsg+0xee/0x170
[ 9857.615375][T12167]      __sys_sendmsg+0xcd/0x170
[ 9857.615375][T12167]      do_syscall_64+0xc6/0x1e0
[ 9857.615375][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9857.615375][T12167] 
[ 9857.617656][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9857.617656][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9857.617656][T12167]      ipv6_find_idev+0x102/0x170
[ 9857.617656][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9857.617656][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9857.617656][T12167]      netlink_rcv_skb+0x130/0x360
[ 9857.617656][T12167]      netlink_unicast+0x449/0x710
[ 9857.617656][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9857.617656][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9857.617656][T12167]      ___sys_sendmsg+0xee/0x170
[ 9857.617656][T12167]      __sys_sendmsg+0xcd/0x170
[ 9857.617656][T12167]      do_syscall_64+0xc6/0x1e0
[ 9857.617656][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9857.617656][T12167] 
[ 9857.619398][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9857.619398][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9857.619398][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9857.619398][T12167]      ipv6_find_idev+0x102/0x170
[ 9857.619398][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9857.619398][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9857.619398][T12167]      netlink_rcv_skb+0x130/0x360
[ 9857.619398][T12167]      netlink_unicast+0x449/0x710
[ 9857.619398][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9857.619398][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9857.619398][T12167]      ___sys_sendmsg+0xee/0x170
[ 9857.619398][T12167]      __sys_sendmsg+0xcd/0x170
[ 9857.619398][T12167]      do_syscall_64+0xc6/0x1e0
[ 9857.619398][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9857.619398][T12167] 
[ 9858.126802][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9858.127208][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9858.127208][   T10]      dst_init+0x84/0x4a0
[ 9858.127208][   T10]      dst_alloc+0x97/0x150
[ 9858.127208][   T10]      ip6_dst_alloc+0x23/0x90
[ 9858.127208][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9858.127208][   T10]      ip6_pol_route+0x56f/0x840
[ 9858.127208][   T10]      fib6_rule_lookup+0x334/0x630
[ 9858.127208][   T10]      ip6_route_output_flags+0x259/0x480
[ 9858.127208][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9858.127208][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9858.127208][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9858.127208][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9858.127208][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.127208][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.127208][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.127208][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.127208][   T10] 
[ 9858.129107][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.129107][   T10]      dst_init+0x84/0x4a0
[ 9858.129107][   T10]      dst_alloc+0x97/0x150
[ 9858.129107][   T10]      ip6_dst_alloc+0x23/0x90
[ 9858.129107][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9858.129107][   T10]      ip6_pol_route+0x56f/0x840
[ 9858.129107][   T10]      fib6_rule_lookup+0x334/0x630
[ 9858.129107][   T10]      ip6_route_output_flags+0x259/0x480
[ 9858.129107][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9858.129107][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9858.129107][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9858.129107][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9858.129107][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9858.129107][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.129107][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.129107][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.129107][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.129107][   T10] 
[ 9858.131100][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.131100][   T10]      dst_init+0x84/0x4a0
[ 9858.131100][   T10]      dst_alloc+0x97/0x150
[ 9858.131100][   T10]      ip6_dst_alloc+0x23/0x90
[ 9858.131100][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9858.131100][   T10]      ip6_pol_route+0x56f/0x840
[ 9858.131100][   T10]      fib6_rule_lookup+0x334/0x630
[ 9858.131100][   T10]      ip6_route_output_flags+0x259/0x480
[ 9858.131100][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9858.131100][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9858.131100][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9858.131100][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9858.131100][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9858.131100][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.131100][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.131100][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.131100][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.131100][   T10] 
[ 9858.133083][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.133083][   T10]      netdev_get_by_index+0x5e/0x80
[ 9858.133083][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9858.133083][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9858.133083][   T10]      ip6_route_add+0x1c/0x140
[ 9858.133083][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9858.133083][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9858.133083][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9858.133083][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9858.133083][   T10]      netlink_rcv_skb+0x130/0x360
[ 9858.133083][   T10]      netlink_unicast+0x449/0x710
[ 9858.133083][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9858.133083][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9858.133083][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.133083][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.133083][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.133083][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.133083][   T10] 
[ 9858.135077][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.135077][   T10]      netdev_get_by_index+0x5e/0x80
[ 9858.135077][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9858.135077][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9858.135077][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9858.135077][   T10]      ipv6_add_addr+0x411/0x2000
[ 9858.135077][   T10]      inet6_addr_add+0x30e/0xa40
[ 9858.135077][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9858.135077][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9858.135077][   T10]      netlink_rcv_skb+0x130/0x360
[ 9858.135077][   T10]      netlink_unicast+0x449/0x710
[ 9858.135077][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9858.135077][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9858.135077][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.135077][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.135077][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.135077][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.135077][   T10] 
[ 9858.137062][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.137062][   T10]      netdev_get_by_index+0x5e/0x80
[ 9858.137062][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9858.137062][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9858.137062][   T10]      ip6_route_add+0x1c/0x140
[ 9858.137062][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9858.137062][   T10]      addrconf_add_dev+0xe2/0x170
[ 9858.137062][   T10]      inet6_addr_add+0x12f/0xa40
[ 9858.137062][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9858.137062][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9858.137062][   T10]      netlink_rcv_skb+0x130/0x360
[ 9858.137062][   T10]      netlink_unicast+0x449/0x710
[ 9858.137062][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9858.137062][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9858.137062][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.137062][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.137062][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.137062][   T10] 
[ 9858.139021][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.139021][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9858.139021][   T10]      ipv6_find_idev+0x102/0x170
[ 9858.139021][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9858.139021][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9858.139021][   T10]      netlink_rcv_skb+0x130/0x360
[ 9858.139021][   T10]      netlink_unicast+0x449/0x710
[ 9858.139021][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9858.139021][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9858.139021][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.139021][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.139021][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.139021][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.139021][   T10] 
[ 9858.140563][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9858.140563][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9858.140563][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9858.140563][   T10]      ipv6_find_idev+0x102/0x170
[ 9858.140563][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9858.140563][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9858.140563][   T10]      netlink_rcv_skb+0x130/0x360
[ 9858.140563][   T10]      netlink_unicast+0x449/0x710
[ 9858.140563][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9858.140563][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9858.140563][   T10]      ___sys_sendmsg+0xee/0x170
[ 9858.140563][   T10]      __sys_sendmsg+0xcd/0x170
[ 9858.140563][   T10]      do_syscall_64+0xc6/0x1e0
[ 9858.140563][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9858.140563][   T10] 
[ 9867.662812][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9867.663318][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9867.663318][T12167]      netdev_get_by_index+0x5e/0x80
[ 9867.663318][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9867.663318][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9867.663318][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9867.663318][T12167]      ipv6_add_addr+0x411/0x2000
[ 9867.663318][T12167]      inet6_addr_add+0x30e/0xa40
[ 9867.663318][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9867.663318][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9867.663318][T12167]      netlink_rcv_skb+0x130/0x360
[ 9867.663318][T12167]      netlink_unicast+0x449/0x710
[ 9867.663318][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9867.663318][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9867.663318][T12167]      ___sys_sendmsg+0xee/0x170
[ 9867.663318][T12167]      __sys_sendmsg+0xcd/0x170
[ 9867.663318][T12167]      do_syscall_64+0xc6/0x1e0
[ 9867.663318][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9867.663318][T12167] 
[ 9867.665590][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9867.665590][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9867.665590][T12167]      ipv6_find_idev+0x102/0x170
[ 9867.665590][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9867.665590][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9867.665590][T12167]      netlink_rcv_skb+0x130/0x360
[ 9867.665590][T12167]      netlink_unicast+0x449/0x710
[ 9867.665590][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9867.665590][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9867.665590][T12167]      ___sys_sendmsg+0xee/0x170
[ 9867.665590][T12167]      __sys_sendmsg+0xcd/0x170
[ 9867.665590][T12167]      do_syscall_64+0xc6/0x1e0
[ 9867.665590][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9867.665590][T12167] 
[ 9867.667338][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9867.667338][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9867.667338][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9867.667338][T12167]      ipv6_find_idev+0x102/0x170
[ 9867.667338][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9867.667338][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9867.667338][T12167]      netlink_rcv_skb+0x130/0x360
[ 9867.667338][T12167]      netlink_unicast+0x449/0x710
[ 9867.667338][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9867.667338][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9867.667338][T12167]      ___sys_sendmsg+0xee/0x170
[ 9867.667338][T12167]      __sys_sendmsg+0xcd/0x170
[ 9867.667338][T12167]      do_syscall_64+0xc6/0x1e0
[ 9867.667338][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9867.667338][T12167] 
[ 9868.182884][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9868.183282][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9868.183282][   T10]      dst_init+0x84/0x4a0
[ 9868.183282][   T10]      dst_alloc+0x97/0x150
[ 9868.183282][   T10]      ip6_dst_alloc+0x23/0x90
[ 9868.183282][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9868.183282][   T10]      ip6_pol_route+0x56f/0x840
[ 9868.183282][   T10]      fib6_rule_lookup+0x334/0x630
[ 9868.183282][   T10]      ip6_route_output_flags+0x259/0x480
[ 9868.183282][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9868.183282][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9868.183282][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9868.183282][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9868.183282][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.183282][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.183282][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.183282][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.183282][   T10] 
[ 9868.185186][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.185186][   T10]      dst_init+0x84/0x4a0
[ 9868.185186][   T10]      dst_alloc+0x97/0x150
[ 9868.185186][   T10]      ip6_dst_alloc+0x23/0x90
[ 9868.185186][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9868.185186][   T10]      ip6_pol_route+0x56f/0x840
[ 9868.185186][   T10]      fib6_rule_lookup+0x334/0x630
[ 9868.185186][   T10]      ip6_route_output_flags+0x259/0x480
[ 9868.185186][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9868.185186][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9868.185186][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9868.185186][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9868.185186][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9868.185186][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.185186][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.185186][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.185186][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.185186][   T10] 
[ 9868.187175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.187175][   T10]      dst_init+0x84/0x4a0
[ 9868.187175][   T10]      dst_alloc+0x97/0x150
[ 9868.187175][   T10]      ip6_dst_alloc+0x23/0x90
[ 9868.187175][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9868.187175][   T10]      ip6_pol_route+0x56f/0x840
[ 9868.187175][   T10]      fib6_rule_lookup+0x334/0x630
[ 9868.187175][   T10]      ip6_route_output_flags+0x259/0x480
[ 9868.187175][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9868.187175][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9868.187175][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9868.187175][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9868.187175][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9868.187175][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.187175][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.187175][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.187175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.187175][   T10] 
[ 9868.189173][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.189173][   T10]      netdev_get_by_index+0x5e/0x80
[ 9868.189173][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9868.189173][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9868.189173][   T10]      ip6_route_add+0x1c/0x140
[ 9868.189173][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9868.189173][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9868.189173][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9868.189173][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9868.189173][   T10]      netlink_rcv_skb+0x130/0x360
[ 9868.189173][   T10]      netlink_unicast+0x449/0x710
[ 9868.189173][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9868.189173][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9868.189173][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.189173][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.189173][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.189173][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.189173][   T10] 
[ 9868.191203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.191203][   T10]      netdev_get_by_index+0x5e/0x80
[ 9868.191203][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9868.191203][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9868.191203][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9868.191203][   T10]      ipv6_add_addr+0x411/0x2000
[ 9868.191203][   T10]      inet6_addr_add+0x30e/0xa40
[ 9868.191203][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9868.191203][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9868.191203][   T10]      netlink_rcv_skb+0x130/0x360
[ 9868.191203][   T10]      netlink_unicast+0x449/0x710
[ 9868.191203][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9868.191203][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9868.191203][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.191203][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.191203][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.191203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.191203][   T10] 
[ 9868.193200][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.193200][   T10]      netdev_get_by_index+0x5e/0x80
[ 9868.193200][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9868.193200][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9868.193200][   T10]      ip6_route_add+0x1c/0x140
[ 9868.193200][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9868.193200][   T10]      addrconf_add_dev+0xe2/0x170
[ 9868.193200][   T10]      inet6_addr_add+0x12f/0xa40
[ 9868.193200][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9868.193200][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9868.193200][   T10]      netlink_rcv_skb+0x130/0x360
[ 9868.193200][   T10]      netlink_unicast+0x449/0x710
[ 9868.193200][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9868.193200][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9868.193200][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.193200][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.193200][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.193200][   T10] 
[ 9868.195163][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.195163][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9868.195163][   T10]      ipv6_find_idev+0x102/0x170
[ 9868.195163][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9868.195163][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9868.195163][   T10]      netlink_rcv_skb+0x130/0x360
[ 9868.195163][   T10]      netlink_unicast+0x449/0x710
[ 9868.195163][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9868.195163][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9868.195163][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.195163][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.195163][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.195163][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.195163][   T10] 
[ 9868.196697][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9868.196697][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9868.196697][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9868.196697][   T10]      ipv6_find_idev+0x102/0x170
[ 9868.196697][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9868.196697][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9868.196697][   T10]      netlink_rcv_skb+0x130/0x360
[ 9868.196697][   T10]      netlink_unicast+0x449/0x710
[ 9868.196697][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9868.196697][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9868.196697][   T10]      ___sys_sendmsg+0xee/0x170
[ 9868.196697][   T10]      __sys_sendmsg+0xcd/0x170
[ 9868.196697][   T10]      do_syscall_64+0xc6/0x1e0
[ 9868.196697][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9868.196697][   T10] 
[ 9877.686743][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9877.687254][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9877.687254][T12167]      netdev_get_by_index+0x5e/0x80
[ 9877.687254][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9877.687254][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9877.687254][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9877.687254][T12167]      ipv6_add_addr+0x411/0x2000
[ 9877.687254][T12167]      inet6_addr_add+0x30e/0xa40
[ 9877.687254][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9877.687254][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9877.687254][T12167]      netlink_rcv_skb+0x130/0x360
[ 9877.687254][T12167]      netlink_unicast+0x449/0x710
[ 9877.687254][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9877.687254][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9877.687254][T12167]      ___sys_sendmsg+0xee/0x170
[ 9877.687254][T12167]      __sys_sendmsg+0xcd/0x170
[ 9877.687254][T12167]      do_syscall_64+0xc6/0x1e0
[ 9877.687254][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9877.687254][T12167] 
[ 9877.689524][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9877.689524][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9877.689524][T12167]      ipv6_find_idev+0x102/0x170
[ 9877.689524][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9877.689524][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9877.689524][T12167]      netlink_rcv_skb+0x130/0x360
[ 9877.689524][T12167]      netlink_unicast+0x449/0x710
[ 9877.689524][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9877.689524][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9877.689524][T12167]      ___sys_sendmsg+0xee/0x170
[ 9877.689524][T12167]      __sys_sendmsg+0xcd/0x170
[ 9877.689524][T12167]      do_syscall_64+0xc6/0x1e0
[ 9877.689524][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9877.689524][T12167] 
[ 9877.691272][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9877.691272][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9877.691272][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9877.691272][T12167]      ipv6_find_idev+0x102/0x170
[ 9877.691272][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9877.691272][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9877.691272][T12167]      netlink_rcv_skb+0x130/0x360
[ 9877.691272][T12167]      netlink_unicast+0x449/0x710
[ 9877.691272][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9877.691272][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9877.691272][T12167]      ___sys_sendmsg+0xee/0x170
[ 9877.691272][T12167]      __sys_sendmsg+0xcd/0x170
[ 9877.691272][T12167]      do_syscall_64+0xc6/0x1e0
[ 9877.691272][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9877.691272][T12167] 
[ 9878.198801][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9878.199212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9878.199212][   T10]      dst_init+0x84/0x4a0
[ 9878.199212][   T10]      dst_alloc+0x97/0x150
[ 9878.199212][   T10]      ip6_dst_alloc+0x23/0x90
[ 9878.199212][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9878.199212][   T10]      ip6_pol_route+0x56f/0x840
[ 9878.199212][   T10]      fib6_rule_lookup+0x334/0x630
[ 9878.199212][   T10]      ip6_route_output_flags+0x259/0x480
[ 9878.199212][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9878.199212][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9878.199212][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9878.199212][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9878.199212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.199212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.199212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.199212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.199212][   T10] 
[ 9878.201144][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.201144][   T10]      dst_init+0x84/0x4a0
[ 9878.201144][   T10]      dst_alloc+0x97/0x150
[ 9878.201144][   T10]      ip6_dst_alloc+0x23/0x90
[ 9878.201144][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9878.201144][   T10]      ip6_pol_route+0x56f/0x840
[ 9878.201144][   T10]      fib6_rule_lookup+0x334/0x630
[ 9878.201144][   T10]      ip6_route_output_flags+0x259/0x480
[ 9878.201144][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9878.201144][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9878.201144][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9878.201144][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9878.201144][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9878.201144][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.201144][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.201144][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.201144][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.201144][   T10] 
[ 9878.203155][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.203155][   T10]      dst_init+0x84/0x4a0
[ 9878.203155][   T10]      dst_alloc+0x97/0x150
[ 9878.203155][   T10]      ip6_dst_alloc+0x23/0x90
[ 9878.203155][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9878.203155][   T10]      ip6_pol_route+0x56f/0x840
[ 9878.203155][   T10]      fib6_rule_lookup+0x334/0x630
[ 9878.203155][   T10]      ip6_route_output_flags+0x259/0x480
[ 9878.203155][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9878.203155][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9878.203155][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9878.203155][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9878.203155][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9878.203155][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.203155][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.203155][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.203155][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.203155][   T10] 
[ 9878.205174][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.205174][   T10]      netdev_get_by_index+0x5e/0x80
[ 9878.205174][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9878.205174][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9878.205174][   T10]      ip6_route_add+0x1c/0x140
[ 9878.205174][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9878.205174][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9878.205174][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9878.205174][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9878.205174][   T10]      netlink_rcv_skb+0x130/0x360
[ 9878.205174][   T10]      netlink_unicast+0x449/0x710
[ 9878.205174][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9878.205174][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9878.205174][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.205174][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.205174][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.205174][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.205174][   T10] 
[ 9878.207203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.207203][   T10]      netdev_get_by_index+0x5e/0x80
[ 9878.207203][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9878.207203][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9878.207203][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9878.207203][   T10]      ipv6_add_addr+0x411/0x2000
[ 9878.207203][   T10]      inet6_addr_add+0x30e/0xa40
[ 9878.207203][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9878.207203][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9878.207203][   T10]      netlink_rcv_skb+0x130/0x360
[ 9878.207203][   T10]      netlink_unicast+0x449/0x710
[ 9878.207203][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9878.207203][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9878.207203][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.207203][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.207203][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.207203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.207203][   T10] 
[ 9878.209233][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.209233][   T10]      netdev_get_by_index+0x5e/0x80
[ 9878.209233][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9878.209233][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9878.209233][   T10]      ip6_route_add+0x1c/0x140
[ 9878.209233][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9878.209233][   T10]      addrconf_add_dev+0xe2/0x170
[ 9878.209233][   T10]      inet6_addr_add+0x12f/0xa40
[ 9878.209233][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9878.209233][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9878.209233][   T10]      netlink_rcv_skb+0x130/0x360
[ 9878.209233][   T10]      netlink_unicast+0x449/0x710
[ 9878.209233][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9878.209233][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9878.209233][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.209233][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.209233][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.209233][   T10] 
[ 9878.211224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.211224][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9878.211224][   T10]      ipv6_find_idev+0x102/0x170
[ 9878.211224][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9878.211224][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9878.211224][   T10]      netlink_rcv_skb+0x130/0x360
[ 9878.211224][   T10]      netlink_unicast+0x449/0x710
[ 9878.211224][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9878.211224][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9878.211224][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.211224][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.211224][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.211224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.211224][   T10] 
[ 9878.212777][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9878.212777][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9878.212777][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9878.212777][   T10]      ipv6_find_idev+0x102/0x170
[ 9878.212777][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9878.212777][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9878.212777][   T10]      netlink_rcv_skb+0x130/0x360
[ 9878.212777][   T10]      netlink_unicast+0x449/0x710
[ 9878.212777][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9878.212777][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9878.212777][   T10]      ___sys_sendmsg+0xee/0x170
[ 9878.212777][   T10]      __sys_sendmsg+0xcd/0x170
[ 9878.212777][   T10]      do_syscall_64+0xc6/0x1e0
[ 9878.212777][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9878.212777][   T10] 
[ 9887.694806][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9887.695320][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9887.695320][T12167]      netdev_get_by_index+0x5e/0x80
[ 9887.695320][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9887.695320][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9887.695320][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9887.695320][T12167]      ipv6_add_addr+0x411/0x2000
[ 9887.695320][T12167]      inet6_addr_add+0x30e/0xa40
[ 9887.695320][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9887.695320][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9887.695320][T12167]      netlink_rcv_skb+0x130/0x360
[ 9887.695320][T12167]      netlink_unicast+0x449/0x710
[ 9887.695320][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9887.695320][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9887.695320][T12167]      ___sys_sendmsg+0xee/0x170
[ 9887.695320][T12167]      __sys_sendmsg+0xcd/0x170
[ 9887.695320][T12167]      do_syscall_64+0xc6/0x1e0
[ 9887.695320][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9887.695320][T12167] 
[ 9887.697593][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9887.697593][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9887.697593][T12167]      ipv6_find_idev+0x102/0x170
[ 9887.697593][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9887.697593][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9887.697593][T12167]      netlink_rcv_skb+0x130/0x360
[ 9887.697593][T12167]      netlink_unicast+0x449/0x710
[ 9887.697593][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9887.697593][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9887.697593][T12167]      ___sys_sendmsg+0xee/0x170
[ 9887.697593][T12167]      __sys_sendmsg+0xcd/0x170
[ 9887.697593][T12167]      do_syscall_64+0xc6/0x1e0
[ 9887.697593][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9887.697593][T12167] 
[ 9887.699341][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9887.699341][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9887.699341][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9887.699341][T12167]      ipv6_find_idev+0x102/0x170
[ 9887.699341][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9887.699341][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9887.699341][T12167]      netlink_rcv_skb+0x130/0x360
[ 9887.699341][T12167]      netlink_unicast+0x449/0x710
[ 9887.699341][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9887.699341][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9887.699341][T12167]      ___sys_sendmsg+0xee/0x170
[ 9887.699341][T12167]      __sys_sendmsg+0xcd/0x170
[ 9887.699341][T12167]      do_syscall_64+0xc6/0x1e0
[ 9887.699341][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9887.699341][T12167] 
[ 9888.454807][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9888.455241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9888.455241][   T10]      dst_init+0x84/0x4a0
[ 9888.455241][   T10]      dst_alloc+0x97/0x150
[ 9888.455241][   T10]      ip6_dst_alloc+0x23/0x90
[ 9888.455241][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9888.455241][   T10]      ip6_pol_route+0x56f/0x840
[ 9888.455241][   T10]      fib6_rule_lookup+0x334/0x630
[ 9888.455241][   T10]      ip6_route_output_flags+0x259/0x480
[ 9888.455241][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9888.455241][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9888.455241][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9888.455241][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9888.455241][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.455241][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.455241][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.455241][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.455241][   T10] 
[ 9888.457128][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.457128][   T10]      dst_init+0x84/0x4a0
[ 9888.457128][   T10]      dst_alloc+0x97/0x150
[ 9888.457128][   T10]      ip6_dst_alloc+0x23/0x90
[ 9888.457128][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9888.457128][   T10]      ip6_pol_route+0x56f/0x840
[ 9888.457128][   T10]      fib6_rule_lookup+0x334/0x630
[ 9888.457128][   T10]      ip6_route_output_flags+0x259/0x480
[ 9888.457128][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9888.457128][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9888.457128][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9888.457128][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9888.457128][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9888.457128][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.457128][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.457128][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.457128][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.457128][   T10] 
[ 9888.459123][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.459123][   T10]      dst_init+0x84/0x4a0
[ 9888.459123][   T10]      dst_alloc+0x97/0x150
[ 9888.459123][   T10]      ip6_dst_alloc+0x23/0x90
[ 9888.459123][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9888.459123][   T10]      ip6_pol_route+0x56f/0x840
[ 9888.459123][   T10]      fib6_rule_lookup+0x334/0x630
[ 9888.459123][   T10]      ip6_route_output_flags+0x259/0x480
[ 9888.459123][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9888.459123][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9888.459123][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9888.459123][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9888.459123][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9888.459123][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.459123][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.459123][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.459123][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.459123][   T10] 
[ 9888.461137][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.461137][   T10]      netdev_get_by_index+0x5e/0x80
[ 9888.461137][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9888.461137][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9888.461137][   T10]      ip6_route_add+0x1c/0x140
[ 9888.461137][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9888.461137][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9888.461137][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9888.461137][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9888.461137][   T10]      netlink_rcv_skb+0x130/0x360
[ 9888.461137][   T10]      netlink_unicast+0x449/0x710
[ 9888.461137][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9888.461137][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9888.461137][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.461137][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.461137][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.461137][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.461137][   T10] 
[ 9888.463148][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.463148][   T10]      netdev_get_by_index+0x5e/0x80
[ 9888.463148][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9888.463148][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9888.463148][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9888.463148][   T10]      ipv6_add_addr+0x411/0x2000
[ 9888.463148][   T10]      inet6_addr_add+0x30e/0xa40
[ 9888.463148][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9888.463148][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9888.463148][   T10]      netlink_rcv_skb+0x130/0x360
[ 9888.463148][   T10]      netlink_unicast+0x449/0x710
[ 9888.463148][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9888.463148][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9888.463148][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.463148][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.463148][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.463148][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.463148][   T10] 
[ 9888.465153][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.465153][   T10]      netdev_get_by_index+0x5e/0x80
[ 9888.465153][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9888.465153][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9888.465153][   T10]      ip6_route_add+0x1c/0x140
[ 9888.465153][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9888.465153][   T10]      addrconf_add_dev+0xe2/0x170
[ 9888.465153][   T10]      inet6_addr_add+0x12f/0xa40
[ 9888.465153][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9888.465153][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9888.465153][   T10]      netlink_rcv_skb+0x130/0x360
[ 9888.465153][   T10]      netlink_unicast+0x449/0x710
[ 9888.465153][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9888.465153][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9888.465153][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.465153][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.465153][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.465153][   T10] 
[ 9888.467122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.467122][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9888.467122][   T10]      ipv6_find_idev+0x102/0x170
[ 9888.467122][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9888.467122][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9888.467122][   T10]      netlink_rcv_skb+0x130/0x360
[ 9888.467122][   T10]      netlink_unicast+0x449/0x710
[ 9888.467122][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9888.467122][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9888.467122][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.467122][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.467122][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.467122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.467122][   T10] 
[ 9888.468664][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9888.468664][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9888.468664][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9888.468664][   T10]      ipv6_find_idev+0x102/0x170
[ 9888.468664][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9888.468664][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9888.468664][   T10]      netlink_rcv_skb+0x130/0x360
[ 9888.468664][   T10]      netlink_unicast+0x449/0x710
[ 9888.468664][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9888.468664][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9888.468664][   T10]      ___sys_sendmsg+0xee/0x170
[ 9888.468664][   T10]      __sys_sendmsg+0xcd/0x170
[ 9888.468664][   T10]      do_syscall_64+0xc6/0x1e0
[ 9888.468664][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9888.468664][   T10] 
[ 9897.950806][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9897.951328][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9897.951328][T12167]      netdev_get_by_index+0x5e/0x80
[ 9897.951328][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9897.951328][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9897.951328][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9897.951328][T12167]      ipv6_add_addr+0x411/0x2000
[ 9897.951328][T12167]      inet6_addr_add+0x30e/0xa40
[ 9897.951328][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9897.951328][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9897.951328][T12167]      netlink_rcv_skb+0x130/0x360
[ 9897.951328][T12167]      netlink_unicast+0x449/0x710
[ 9897.951328][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9897.951328][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9897.951328][T12167]      ___sys_sendmsg+0xee/0x170
[ 9897.951328][T12167]      __sys_sendmsg+0xcd/0x170
[ 9897.951328][T12167]      do_syscall_64+0xc6/0x1e0
[ 9897.951328][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9897.951328][T12167] 
[ 9897.953621][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9897.953621][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9897.953621][T12167]      ipv6_find_idev+0x102/0x170
[ 9897.953621][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9897.953621][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9897.953621][T12167]      netlink_rcv_skb+0x130/0x360
[ 9897.953621][T12167]      netlink_unicast+0x449/0x710
[ 9897.953621][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9897.953621][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9897.953621][T12167]      ___sys_sendmsg+0xee/0x170
[ 9897.953621][T12167]      __sys_sendmsg+0xcd/0x170
[ 9897.953621][T12167]      do_syscall_64+0xc6/0x1e0
[ 9897.953621][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9897.953621][T12167] 
[ 9897.955355][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9897.955355][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9897.955355][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9897.955355][T12167]      ipv6_find_idev+0x102/0x170
[ 9897.955355][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9897.955355][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9897.955355][T12167]      netlink_rcv_skb+0x130/0x360
[ 9897.955355][T12167]      netlink_unicast+0x449/0x710
[ 9897.955355][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9897.955355][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9897.955355][T12167]      ___sys_sendmsg+0xee/0x170
[ 9897.955355][T12167]      __sys_sendmsg+0xcd/0x170
[ 9897.955355][T12167]      do_syscall_64+0xc6/0x1e0
[ 9897.955355][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9897.955355][T12167] 
[ 9898.710800][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9898.711229][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9898.711229][   T10]      dst_init+0x84/0x4a0
[ 9898.711229][   T10]      dst_alloc+0x97/0x150
[ 9898.711229][   T10]      ip6_dst_alloc+0x23/0x90
[ 9898.711229][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9898.711229][   T10]      ip6_pol_route+0x56f/0x840
[ 9898.711229][   T10]      fib6_rule_lookup+0x334/0x630
[ 9898.711229][   T10]      ip6_route_output_flags+0x259/0x480
[ 9898.711229][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9898.711229][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9898.711229][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9898.711229][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9898.711229][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.711229][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.711229][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.711229][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.711229][   T10] 
[ 9898.713126][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.713126][   T10]      dst_init+0x84/0x4a0
[ 9898.713126][   T10]      dst_alloc+0x97/0x150
[ 9898.713126][   T10]      ip6_dst_alloc+0x23/0x90
[ 9898.713126][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9898.713126][   T10]      ip6_pol_route+0x56f/0x840
[ 9898.713126][   T10]      fib6_rule_lookup+0x334/0x630
[ 9898.713126][   T10]      ip6_route_output_flags+0x259/0x480
[ 9898.713126][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9898.713126][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9898.713126][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9898.713126][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9898.713126][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9898.713126][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.713126][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.713126][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.713126][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.713126][   T10] 
[ 9898.715119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.715119][   T10]      dst_init+0x84/0x4a0
[ 9898.715119][   T10]      dst_alloc+0x97/0x150
[ 9898.715119][   T10]      ip6_dst_alloc+0x23/0x90
[ 9898.715119][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9898.715119][   T10]      ip6_pol_route+0x56f/0x840
[ 9898.715119][   T10]      fib6_rule_lookup+0x334/0x630
[ 9898.715119][   T10]      ip6_route_output_flags+0x259/0x480
[ 9898.715119][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9898.715119][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9898.715119][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9898.715119][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9898.715119][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9898.715119][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.715119][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.715119][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.715119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.715119][   T10] 
[ 9898.717111][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.717111][   T10]      netdev_get_by_index+0x5e/0x80
[ 9898.717111][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9898.717111][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9898.717111][   T10]      ip6_route_add+0x1c/0x140
[ 9898.717111][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9898.717111][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9898.717111][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9898.717111][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9898.717111][   T10]      netlink_rcv_skb+0x130/0x360
[ 9898.717111][   T10]      netlink_unicast+0x449/0x710
[ 9898.717111][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9898.717111][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9898.717111][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.717111][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.717111][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.717111][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.717111][   T10] 
[ 9898.719125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.719125][   T10]      netdev_get_by_index+0x5e/0x80
[ 9898.719125][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9898.719125][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9898.719125][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9898.719125][   T10]      ipv6_add_addr+0x411/0x2000
[ 9898.719125][   T10]      inet6_addr_add+0x30e/0xa40
[ 9898.719125][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9898.719125][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9898.719125][   T10]      netlink_rcv_skb+0x130/0x360
[ 9898.719125][   T10]      netlink_unicast+0x449/0x710
[ 9898.719125][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9898.719125][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9898.719125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.719125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.719125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.719125][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.719125][   T10] 
[ 9898.721133][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.721133][   T10]      netdev_get_by_index+0x5e/0x80
[ 9898.721133][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9898.721133][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9898.721133][   T10]      ip6_route_add+0x1c/0x140
[ 9898.721133][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9898.721133][   T10]      addrconf_add_dev+0xe2/0x170
[ 9898.721133][   T10]      inet6_addr_add+0x12f/0xa40
[ 9898.721133][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9898.721133][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9898.721133][   T10]      netlink_rcv_skb+0x130/0x360
[ 9898.721133][   T10]      netlink_unicast+0x449/0x710
[ 9898.721133][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9898.721133][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9898.721133][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.721133][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.721133][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.721133][   T10] 
[ 9898.723105][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.723105][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9898.723105][   T10]      ipv6_find_idev+0x102/0x170
[ 9898.723105][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9898.723105][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9898.723105][   T10]      netlink_rcv_skb+0x130/0x360
[ 9898.723105][   T10]      netlink_unicast+0x449/0x710
[ 9898.723105][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9898.723105][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9898.723105][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.723105][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.723105][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.723105][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.723105][   T10] 
[ 9898.724648][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9898.724648][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9898.724648][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9898.724648][   T10]      ipv6_find_idev+0x102/0x170
[ 9898.724648][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9898.724648][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9898.724648][   T10]      netlink_rcv_skb+0x130/0x360
[ 9898.724648][   T10]      netlink_unicast+0x449/0x710
[ 9898.724648][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9898.724648][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9898.724648][   T10]      ___sys_sendmsg+0xee/0x170
[ 9898.724648][   T10]      __sys_sendmsg+0xcd/0x170
[ 9898.724648][   T10]      do_syscall_64+0xc6/0x1e0
[ 9898.724648][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9898.724648][   T10] 
[ 9908.206850][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9908.207377][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9908.207377][T12167]      netdev_get_by_index+0x5e/0x80
[ 9908.207377][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9908.207377][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9908.207377][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9908.207377][T12167]      ipv6_add_addr+0x411/0x2000
[ 9908.207377][T12167]      inet6_addr_add+0x30e/0xa40
[ 9908.207377][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9908.207377][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.207377][T12167]      netlink_rcv_skb+0x130/0x360
[ 9908.207377][T12167]      netlink_unicast+0x449/0x710
[ 9908.207377][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9908.207377][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.207377][T12167]      ___sys_sendmsg+0xee/0x170
[ 9908.207377][T12167]      __sys_sendmsg+0xcd/0x170
[ 9908.207377][T12167]      do_syscall_64+0xc6/0x1e0
[ 9908.207377][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.207377][T12167] 
[ 9908.209679][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9908.209679][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9908.209679][T12167]      ipv6_find_idev+0x102/0x170
[ 9908.209679][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9908.209679][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.209679][T12167]      netlink_rcv_skb+0x130/0x360
[ 9908.209679][T12167]      netlink_unicast+0x449/0x710
[ 9908.209679][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9908.209679][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.209679][T12167]      ___sys_sendmsg+0xee/0x170
[ 9908.209679][T12167]      __sys_sendmsg+0xcd/0x170
[ 9908.209679][T12167]      do_syscall_64+0xc6/0x1e0
[ 9908.209679][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.209679][T12167] 
[ 9908.211420][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9908.211420][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9908.211420][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9908.211420][T12167]      ipv6_find_idev+0x102/0x170
[ 9908.211420][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9908.211420][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.211420][T12167]      netlink_rcv_skb+0x130/0x360
[ 9908.211420][T12167]      netlink_unicast+0x449/0x710
[ 9908.211420][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9908.211420][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.211420][T12167]      ___sys_sendmsg+0xee/0x170
[ 9908.211420][T12167]      __sys_sendmsg+0xcd/0x170
[ 9908.211420][T12167]      do_syscall_64+0xc6/0x1e0
[ 9908.211420][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.211420][T12167] 
[ 9908.734797][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9908.735197][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9908.735197][   T10]      dst_init+0x84/0x4a0
[ 9908.735197][   T10]      dst_alloc+0x97/0x150
[ 9908.735197][   T10]      ip6_dst_alloc+0x23/0x90
[ 9908.735197][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9908.735197][   T10]      ip6_pol_route+0x56f/0x840
[ 9908.735197][   T10]      fib6_rule_lookup+0x334/0x630
[ 9908.735197][   T10]      ip6_route_output_flags+0x259/0x480
[ 9908.735197][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9908.735197][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9908.735197][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9908.735197][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9908.735197][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.735197][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.735197][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.735197][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.735197][   T10] 
[ 9908.737089][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.737089][   T10]      dst_init+0x84/0x4a0
[ 9908.737089][   T10]      dst_alloc+0x97/0x150
[ 9908.737089][   T10]      ip6_dst_alloc+0x23/0x90
[ 9908.737089][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9908.737089][   T10]      ip6_pol_route+0x56f/0x840
[ 9908.737089][   T10]      fib6_rule_lookup+0x334/0x630
[ 9908.737089][   T10]      ip6_route_output_flags+0x259/0x480
[ 9908.737089][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9908.737089][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9908.737089][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9908.737089][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9908.737089][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9908.737089][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.737089][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.737089][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.737089][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.737089][   T10] 
[ 9908.739085][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.739085][   T10]      dst_init+0x84/0x4a0
[ 9908.739085][   T10]      dst_alloc+0x97/0x150
[ 9908.739085][   T10]      ip6_dst_alloc+0x23/0x90
[ 9908.739085][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9908.739085][   T10]      ip6_pol_route+0x56f/0x840
[ 9908.739085][   T10]      fib6_rule_lookup+0x334/0x630
[ 9908.739085][   T10]      ip6_route_output_flags+0x259/0x480
[ 9908.739085][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9908.739085][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9908.739085][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9908.739085][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9908.739085][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9908.739085][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.739085][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.739085][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.739085][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.739085][   T10] 
[ 9908.741087][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.741087][   T10]      netdev_get_by_index+0x5e/0x80
[ 9908.741087][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9908.741087][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9908.741087][   T10]      ip6_route_add+0x1c/0x140
[ 9908.741087][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9908.741087][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9908.741087][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9908.741087][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.741087][   T10]      netlink_rcv_skb+0x130/0x360
[ 9908.741087][   T10]      netlink_unicast+0x449/0x710
[ 9908.741087][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9908.741087][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.741087][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.741087][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.741087][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.741087][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.741087][   T10] 
[ 9908.743153][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.743153][   T10]      netdev_get_by_index+0x5e/0x80
[ 9908.743153][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9908.743153][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9908.743153][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9908.743153][   T10]      ipv6_add_addr+0x411/0x2000
[ 9908.743153][   T10]      inet6_addr_add+0x30e/0xa40
[ 9908.743153][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9908.743153][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.743153][   T10]      netlink_rcv_skb+0x130/0x360
[ 9908.743153][   T10]      netlink_unicast+0x449/0x710
[ 9908.743153][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9908.743153][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.743153][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.743153][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.743153][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.743153][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.743153][   T10] 
[ 9908.745154][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.745154][   T10]      netdev_get_by_index+0x5e/0x80
[ 9908.745154][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9908.745154][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9908.745154][   T10]      ip6_route_add+0x1c/0x140
[ 9908.745154][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9908.745154][   T10]      addrconf_add_dev+0xe2/0x170
[ 9908.745154][   T10]      inet6_addr_add+0x12f/0xa40
[ 9908.745154][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9908.745154][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.745154][   T10]      netlink_rcv_skb+0x130/0x360
[ 9908.745154][   T10]      netlink_unicast+0x449/0x710
[ 9908.745154][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9908.745154][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.745154][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.745154][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.745154][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.745154][   T10] 
[ 9908.747112][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.747112][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9908.747112][   T10]      ipv6_find_idev+0x102/0x170
[ 9908.747112][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9908.747112][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.747112][   T10]      netlink_rcv_skb+0x130/0x360
[ 9908.747112][   T10]      netlink_unicast+0x449/0x710
[ 9908.747112][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9908.747112][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.747112][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.747112][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.747112][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.747112][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.747112][   T10] 
[ 9908.748646][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9908.748646][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9908.748646][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9908.748646][   T10]      ipv6_find_idev+0x102/0x170
[ 9908.748646][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9908.748646][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9908.748646][   T10]      netlink_rcv_skb+0x130/0x360
[ 9908.748646][   T10]      netlink_unicast+0x449/0x710
[ 9908.748646][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9908.748646][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9908.748646][   T10]      ___sys_sendmsg+0xee/0x170
[ 9908.748646][   T10]      __sys_sendmsg+0xcd/0x170
[ 9908.748646][   T10]      do_syscall_64+0xc6/0x1e0
[ 9908.748646][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9908.748646][   T10] 
[ 9918.462817][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9918.463275][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9918.463275][T12167]      netdev_get_by_index+0x5e/0x80
[ 9918.463275][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9918.463275][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9918.463275][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9918.463275][T12167]      ipv6_add_addr+0x411/0x2000
[ 9918.463275][T12167]      inet6_addr_add+0x30e/0xa40
[ 9918.463275][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9918.463275][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9918.463275][T12167]      netlink_rcv_skb+0x130/0x360
[ 9918.463275][T12167]      netlink_unicast+0x449/0x710
[ 9918.463275][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9918.463275][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9918.463275][T12167]      ___sys_sendmsg+0xee/0x170
[ 9918.463275][T12167]      __sys_sendmsg+0xcd/0x170
[ 9918.463275][T12167]      do_syscall_64+0xc6/0x1e0
[ 9918.463275][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9918.463275][T12167] 
[ 9918.465542][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9918.465542][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9918.465542][T12167]      ipv6_find_idev+0x102/0x170
[ 9918.465542][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9918.465542][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9918.465542][T12167]      netlink_rcv_skb+0x130/0x360
[ 9918.465542][T12167]      netlink_unicast+0x449/0x710
[ 9918.465542][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9918.465542][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9918.465542][T12167]      ___sys_sendmsg+0xee/0x170
[ 9918.465542][T12167]      __sys_sendmsg+0xcd/0x170
[ 9918.465542][T12167]      do_syscall_64+0xc6/0x1e0
[ 9918.465542][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9918.465542][T12167] 
[ 9918.467287][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9918.467287][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9918.467287][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9918.467287][T12167]      ipv6_find_idev+0x102/0x170
[ 9918.467287][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9918.467287][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9918.467287][T12167]      netlink_rcv_skb+0x130/0x360
[ 9918.467287][T12167]      netlink_unicast+0x449/0x710
[ 9918.467287][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9918.467287][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9918.467287][T12167]      ___sys_sendmsg+0xee/0x170
[ 9918.467287][T12167]      __sys_sendmsg+0xcd/0x170
[ 9918.467287][T12167]      do_syscall_64+0xc6/0x1e0
[ 9918.467287][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9918.467287][T12167] 
[ 9918.998797][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9918.999232][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9918.999232][   T10]      dst_init+0x84/0x4a0
[ 9918.999232][   T10]      dst_alloc+0x97/0x150
[ 9918.999232][   T10]      ip6_dst_alloc+0x23/0x90
[ 9918.999232][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9918.999232][   T10]      ip6_pol_route+0x56f/0x840
[ 9918.999232][   T10]      fib6_rule_lookup+0x334/0x630
[ 9918.999232][   T10]      ip6_route_output_flags+0x259/0x480
[ 9918.999232][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9918.999232][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9918.999232][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9918.999232][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9918.999232][   T10]      ___sys_sendmsg+0xee/0x170
[ 9918.999232][   T10]      __sys_sendmsg+0xcd/0x170
[ 9918.999232][   T10]      do_syscall_64+0xc6/0x1e0
[ 9918.999232][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9918.999232][   T10] 
[ 9919.001129][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.001129][   T10]      dst_init+0x84/0x4a0
[ 9919.001129][   T10]      dst_alloc+0x97/0x150
[ 9919.001129][   T10]      ip6_dst_alloc+0x23/0x90
[ 9919.001129][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9919.001129][   T10]      ip6_pol_route+0x56f/0x840
[ 9919.001129][   T10]      fib6_rule_lookup+0x334/0x630
[ 9919.001129][   T10]      ip6_route_output_flags+0x259/0x480
[ 9919.001129][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9919.001129][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9919.001129][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9919.001129][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9919.001129][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9919.001129][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.001129][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.001129][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.001129][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.001129][   T10] 
[ 9919.003121][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.003121][   T10]      dst_init+0x84/0x4a0
[ 9919.003121][   T10]      dst_alloc+0x97/0x150
[ 9919.003121][   T10]      ip6_dst_alloc+0x23/0x90
[ 9919.003121][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9919.003121][   T10]      ip6_pol_route+0x56f/0x840
[ 9919.003121][   T10]      fib6_rule_lookup+0x334/0x630
[ 9919.003121][   T10]      ip6_route_output_flags+0x259/0x480
[ 9919.003121][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9919.003121][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9919.003121][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9919.003121][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9919.003121][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9919.003121][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.003121][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.003121][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.003121][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.003121][   T10] 
[ 9919.005118][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.005118][   T10]      netdev_get_by_index+0x5e/0x80
[ 9919.005118][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9919.005118][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9919.005118][   T10]      ip6_route_add+0x1c/0x140
[ 9919.005118][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9919.005118][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9919.005118][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9919.005118][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9919.005118][   T10]      netlink_rcv_skb+0x130/0x360
[ 9919.005118][   T10]      netlink_unicast+0x449/0x710
[ 9919.005118][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9919.005118][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9919.005118][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.005118][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.005118][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.005118][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.005118][   T10] 
[ 9919.007115][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.007115][   T10]      netdev_get_by_index+0x5e/0x80
[ 9919.007115][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9919.007115][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9919.007115][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9919.007115][   T10]      ipv6_add_addr+0x411/0x2000
[ 9919.007115][   T10]      inet6_addr_add+0x30e/0xa40
[ 9919.007115][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9919.007115][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9919.007115][   T10]      netlink_rcv_skb+0x130/0x360
[ 9919.007115][   T10]      netlink_unicast+0x449/0x710
[ 9919.007115][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9919.007115][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9919.007115][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.007115][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.007115][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.007115][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.007115][   T10] 
[ 9919.009107][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.009107][   T10]      netdev_get_by_index+0x5e/0x80
[ 9919.009107][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9919.009107][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9919.009107][   T10]      ip6_route_add+0x1c/0x140
[ 9919.009107][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9919.009107][   T10]      addrconf_add_dev+0xe2/0x170
[ 9919.009107][   T10]      inet6_addr_add+0x12f/0xa40
[ 9919.009107][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9919.009107][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9919.009107][   T10]      netlink_rcv_skb+0x130/0x360
[ 9919.009107][   T10]      netlink_unicast+0x449/0x710
[ 9919.009107][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9919.009107][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9919.009107][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.009107][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.009107][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.009107][   T10] 
[ 9919.011075][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.011075][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9919.011075][   T10]      ipv6_find_idev+0x102/0x170
[ 9919.011075][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9919.011075][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9919.011075][   T10]      netlink_rcv_skb+0x130/0x360
[ 9919.011075][   T10]      netlink_unicast+0x449/0x710
[ 9919.011075][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9919.011075][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9919.011075][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.011075][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.011075][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.011075][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.011075][   T10] 
[ 9919.012614][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9919.012614][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9919.012614][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9919.012614][   T10]      ipv6_find_idev+0x102/0x170
[ 9919.012614][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9919.012614][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9919.012614][   T10]      netlink_rcv_skb+0x130/0x360
[ 9919.012614][   T10]      netlink_unicast+0x449/0x710
[ 9919.012614][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9919.012614][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9919.012614][   T10]      ___sys_sendmsg+0xee/0x170
[ 9919.012614][   T10]      __sys_sendmsg+0xcd/0x170
[ 9919.012614][   T10]      do_syscall_64+0xc6/0x1e0
[ 9919.012614][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9919.012614][   T10] 
[ 9928.710827][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9928.711347][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9928.711347][T12167]      netdev_get_by_index+0x5e/0x80
[ 9928.711347][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9928.711347][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9928.711347][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9928.711347][T12167]      ipv6_add_addr+0x411/0x2000
[ 9928.711347][T12167]      inet6_addr_add+0x30e/0xa40
[ 9928.711347][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9928.711347][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9928.711347][T12167]      netlink_rcv_skb+0x130/0x360
[ 9928.711347][T12167]      netlink_unicast+0x449/0x710
[ 9928.711347][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9928.711347][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9928.711347][T12167]      ___sys_sendmsg+0xee/0x170
[ 9928.711347][T12167]      __sys_sendmsg+0xcd/0x170
[ 9928.711347][T12167]      do_syscall_64+0xc6/0x1e0
[ 9928.711347][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9928.711347][T12167] 
[ 9928.713615][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9928.713615][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9928.713615][T12167]      ipv6_find_idev+0x102/0x170
[ 9928.713615][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9928.713615][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9928.713615][T12167]      netlink_rcv_skb+0x130/0x360
[ 9928.713615][T12167]      netlink_unicast+0x449/0x710
[ 9928.713615][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9928.713615][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9928.713615][T12167]      ___sys_sendmsg+0xee/0x170
[ 9928.713615][T12167]      __sys_sendmsg+0xcd/0x170
[ 9928.713615][T12167]      do_syscall_64+0xc6/0x1e0
[ 9928.713615][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9928.713615][T12167] 
[ 9928.715351][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9928.715351][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9928.715351][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9928.715351][T12167]      ipv6_find_idev+0x102/0x170
[ 9928.715351][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9928.715351][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9928.715351][T12167]      netlink_rcv_skb+0x130/0x360
[ 9928.715351][T12167]      netlink_unicast+0x449/0x710
[ 9928.715351][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9928.715351][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9928.715351][T12167]      ___sys_sendmsg+0xee/0x170
[ 9928.715351][T12167]      __sys_sendmsg+0xcd/0x170
[ 9928.715351][T12167]      do_syscall_64+0xc6/0x1e0
[ 9928.715351][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9928.715351][T12167] 
[ 9929.254803][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9929.255264][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9929.255264][   T10]      dst_init+0x84/0x4a0
[ 9929.255264][   T10]      dst_alloc+0x97/0x150
[ 9929.255264][   T10]      ip6_dst_alloc+0x23/0x90
[ 9929.255264][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9929.255264][   T10]      ip6_pol_route+0x56f/0x840
[ 9929.255264][   T10]      fib6_rule_lookup+0x334/0x630
[ 9929.255264][   T10]      ip6_route_output_flags+0x259/0x480
[ 9929.255264][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9929.255264][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9929.255264][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9929.255264][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9929.255264][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.255264][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.255264][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.255264][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.255264][   T10] 
[ 9929.257163][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.257163][   T10]      dst_init+0x84/0x4a0
[ 9929.257163][   T10]      dst_alloc+0x97/0x150
[ 9929.257163][   T10]      ip6_dst_alloc+0x23/0x90
[ 9929.257163][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9929.257163][   T10]      ip6_pol_route+0x56f/0x840
[ 9929.257163][   T10]      fib6_rule_lookup+0x334/0x630
[ 9929.257163][   T10]      ip6_route_output_flags+0x259/0x480
[ 9929.257163][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9929.257163][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9929.257163][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9929.257163][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9929.257163][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9929.257163][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.257163][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.257163][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.257163][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.257163][   T10] 
[ 9929.259172][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.259172][   T10]      dst_init+0x84/0x4a0
[ 9929.259172][   T10]      dst_alloc+0x97/0x150
[ 9929.259172][   T10]      ip6_dst_alloc+0x23/0x90
[ 9929.259172][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9929.259172][   T10]      ip6_pol_route+0x56f/0x840
[ 9929.259172][   T10]      fib6_rule_lookup+0x334/0x630
[ 9929.259172][   T10]      ip6_route_output_flags+0x259/0x480
[ 9929.259172][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9929.259172][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9929.259172][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9929.259172][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9929.259172][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9929.259172][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.259172][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.259172][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.259172][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.259172][   T10] 
[ 9929.261170][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.261170][   T10]      netdev_get_by_index+0x5e/0x80
[ 9929.261170][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9929.261170][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9929.261170][   T10]      ip6_route_add+0x1c/0x140
[ 9929.261170][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9929.261170][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9929.261170][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9929.261170][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9929.261170][   T10]      netlink_rcv_skb+0x130/0x360
[ 9929.261170][   T10]      netlink_unicast+0x449/0x710
[ 9929.261170][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9929.261170][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9929.261170][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.261170][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.261170][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.261170][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.261170][   T10] 
[ 9929.263165][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.263165][   T10]      netdev_get_by_index+0x5e/0x80
[ 9929.263165][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9929.263165][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9929.263165][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9929.263165][   T10]      ipv6_add_addr+0x411/0x2000
[ 9929.263165][   T10]      inet6_addr_add+0x30e/0xa40
[ 9929.263165][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9929.263165][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9929.263165][   T10]      netlink_rcv_skb+0x130/0x360
[ 9929.263165][   T10]      netlink_unicast+0x449/0x710
[ 9929.263165][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9929.263165][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9929.263165][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.263165][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.263165][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.263165][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.263165][   T10] 
[ 9929.265160][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.265160][   T10]      netdev_get_by_index+0x5e/0x80
[ 9929.265160][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9929.265160][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9929.265160][   T10]      ip6_route_add+0x1c/0x140
[ 9929.265160][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9929.265160][   T10]      addrconf_add_dev+0xe2/0x170
[ 9929.265160][   T10]      inet6_addr_add+0x12f/0xa40
[ 9929.265160][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9929.265160][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9929.265160][   T10]      netlink_rcv_skb+0x130/0x360
[ 9929.265160][   T10]      netlink_unicast+0x449/0x710
[ 9929.265160][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9929.265160][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9929.265160][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.265160][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.265160][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.265160][   T10] 
[ 9929.267113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.267113][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9929.267113][   T10]      ipv6_find_idev+0x102/0x170
[ 9929.267113][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9929.267113][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9929.267113][   T10]      netlink_rcv_skb+0x130/0x360
[ 9929.267113][   T10]      netlink_unicast+0x449/0x710
[ 9929.267113][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9929.267113][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9929.267113][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.267113][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.267113][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.267113][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.267113][   T10] 
[ 9929.268643][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9929.268643][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9929.268643][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9929.268643][   T10]      ipv6_find_idev+0x102/0x170
[ 9929.268643][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9929.268643][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9929.268643][   T10]      netlink_rcv_skb+0x130/0x360
[ 9929.268643][   T10]      netlink_unicast+0x449/0x710
[ 9929.268643][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9929.268643][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9929.268643][   T10]      ___sys_sendmsg+0xee/0x170
[ 9929.268643][   T10]      __sys_sendmsg+0xcd/0x170
[ 9929.268643][   T10]      do_syscall_64+0xc6/0x1e0
[ 9929.268643][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9929.268643][   T10] 
[ 9938.958816][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9938.959334][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9938.959334][T12167]      netdev_get_by_index+0x5e/0x80
[ 9938.959334][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9938.959334][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9938.959334][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9938.959334][T12167]      ipv6_add_addr+0x411/0x2000
[ 9938.959334][T12167]      inet6_addr_add+0x30e/0xa40
[ 9938.959334][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9938.959334][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9938.959334][T12167]      netlink_rcv_skb+0x130/0x360
[ 9938.959334][T12167]      netlink_unicast+0x449/0x710
[ 9938.959334][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9938.959334][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9938.959334][T12167]      ___sys_sendmsg+0xee/0x170
[ 9938.959334][T12167]      __sys_sendmsg+0xcd/0x170
[ 9938.959334][T12167]      do_syscall_64+0xc6/0x1e0
[ 9938.959334][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9938.959334][T12167] 
[ 9938.961605][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9938.961605][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9938.961605][T12167]      ipv6_find_idev+0x102/0x170
[ 9938.961605][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9938.961605][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9938.961605][T12167]      netlink_rcv_skb+0x130/0x360
[ 9938.961605][T12167]      netlink_unicast+0x449/0x710
[ 9938.961605][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9938.961605][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9938.961605][T12167]      ___sys_sendmsg+0xee/0x170
[ 9938.961605][T12167]      __sys_sendmsg+0xcd/0x170
[ 9938.961605][T12167]      do_syscall_64+0xc6/0x1e0
[ 9938.961605][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9938.961605][T12167] 
[ 9938.963336][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9938.963336][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9938.963336][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9938.963336][T12167]      ipv6_find_idev+0x102/0x170
[ 9938.963336][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9938.963336][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9938.963336][T12167]      netlink_rcv_skb+0x130/0x360
[ 9938.963336][T12167]      netlink_unicast+0x449/0x710
[ 9938.963336][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9938.963336][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9938.963336][T12167]      ___sys_sendmsg+0xee/0x170
[ 9938.963336][T12167]      __sys_sendmsg+0xcd/0x170
[ 9938.963336][T12167]      do_syscall_64+0xc6/0x1e0
[ 9938.963336][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9938.963336][T12167] 
[ 9939.510805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9939.511269][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9939.511269][   T10]      dst_init+0x84/0x4a0
[ 9939.511269][   T10]      dst_alloc+0x97/0x150
[ 9939.511269][   T10]      ip6_dst_alloc+0x23/0x90
[ 9939.511269][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9939.511269][   T10]      ip6_pol_route+0x56f/0x840
[ 9939.511269][   T10]      fib6_rule_lookup+0x334/0x630
[ 9939.511269][   T10]      ip6_route_output_flags+0x259/0x480
[ 9939.511269][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9939.511269][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9939.511269][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9939.511269][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9939.511269][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.511269][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.511269][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.511269][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.511269][   T10] 
[ 9939.513182][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.513182][   T10]      dst_init+0x84/0x4a0
[ 9939.513182][   T10]      dst_alloc+0x97/0x150
[ 9939.513182][   T10]      ip6_dst_alloc+0x23/0x90
[ 9939.513182][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9939.513182][   T10]      ip6_pol_route+0x56f/0x840
[ 9939.513182][   T10]      fib6_rule_lookup+0x334/0x630
[ 9939.513182][   T10]      ip6_route_output_flags+0x259/0x480
[ 9939.513182][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9939.513182][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9939.513182][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9939.513182][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9939.513182][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9939.513182][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.513182][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.513182][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.513182][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.513182][   T10] 
[ 9939.515198][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.515198][   T10]      dst_init+0x84/0x4a0
[ 9939.515198][   T10]      dst_alloc+0x97/0x150
[ 9939.515198][   T10]      ip6_dst_alloc+0x23/0x90
[ 9939.515198][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9939.515198][   T10]      ip6_pol_route+0x56f/0x840
[ 9939.515198][   T10]      fib6_rule_lookup+0x334/0x630
[ 9939.515198][   T10]      ip6_route_output_flags+0x259/0x480
[ 9939.515198][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9939.515198][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9939.515198][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9939.515198][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9939.515198][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9939.515198][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.515198][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.515198][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.515198][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.515198][   T10] 
[ 9939.517211][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.517211][   T10]      netdev_get_by_index+0x5e/0x80
[ 9939.517211][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9939.517211][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9939.517211][   T10]      ip6_route_add+0x1c/0x140
[ 9939.517211][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9939.517211][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9939.517211][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9939.517211][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9939.517211][   T10]      netlink_rcv_skb+0x130/0x360
[ 9939.517211][   T10]      netlink_unicast+0x449/0x710
[ 9939.517211][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9939.517211][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9939.517211][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.517211][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.517211][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.517211][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.517211][   T10] 
[ 9939.519218][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.519218][   T10]      netdev_get_by_index+0x5e/0x80
[ 9939.519218][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9939.519218][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9939.519218][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9939.519218][   T10]      ipv6_add_addr+0x411/0x2000
[ 9939.519218][   T10]      inet6_addr_add+0x30e/0xa40
[ 9939.519218][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9939.519218][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9939.519218][   T10]      netlink_rcv_skb+0x130/0x360
[ 9939.519218][   T10]      netlink_unicast+0x449/0x710
[ 9939.519218][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9939.519218][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9939.519218][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.519218][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.519218][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.519218][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.519218][   T10] 
[ 9939.521213][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.521213][   T10]      netdev_get_by_index+0x5e/0x80
[ 9939.521213][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9939.521213][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9939.521213][   T10]      ip6_route_add+0x1c/0x140
[ 9939.521213][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9939.521213][   T10]      addrconf_add_dev+0xe2/0x170
[ 9939.521213][   T10]      inet6_addr_add+0x12f/0xa40
[ 9939.521213][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9939.521213][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9939.521213][   T10]      netlink_rcv_skb+0x130/0x360
[ 9939.521213][   T10]      netlink_unicast+0x449/0x710
[ 9939.521213][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9939.521213][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9939.521213][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.521213][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.521213][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.521213][   T10] 
[ 9939.523173][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.523173][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9939.523173][   T10]      ipv6_find_idev+0x102/0x170
[ 9939.523173][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9939.523173][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9939.523173][   T10]      netlink_rcv_skb+0x130/0x360
[ 9939.523173][   T10]      netlink_unicast+0x449/0x710
[ 9939.523173][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9939.523173][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9939.523173][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.523173][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.523173][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.523173][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.523173][   T10] 
[ 9939.524708][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9939.524708][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9939.524708][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9939.524708][   T10]      ipv6_find_idev+0x102/0x170
[ 9939.524708][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9939.524708][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9939.524708][   T10]      netlink_rcv_skb+0x130/0x360
[ 9939.524708][   T10]      netlink_unicast+0x449/0x710
[ 9939.524708][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9939.524708][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9939.524708][   T10]      ___sys_sendmsg+0xee/0x170
[ 9939.524708][   T10]      __sys_sendmsg+0xcd/0x170
[ 9939.524708][   T10]      do_syscall_64+0xc6/0x1e0
[ 9939.524708][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9939.524708][   T10] 
[ 9949.030833][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9949.031327][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9949.031327][T12167]      netdev_get_by_index+0x5e/0x80
[ 9949.031327][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9949.031327][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9949.031327][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9949.031327][T12167]      ipv6_add_addr+0x411/0x2000
[ 9949.031327][T12167]      inet6_addr_add+0x30e/0xa40
[ 9949.031327][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9949.031327][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.031327][T12167]      netlink_rcv_skb+0x130/0x360
[ 9949.031327][T12167]      netlink_unicast+0x449/0x710
[ 9949.031327][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9949.031327][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.031327][T12167]      ___sys_sendmsg+0xee/0x170
[ 9949.031327][T12167]      __sys_sendmsg+0xcd/0x170
[ 9949.031327][T12167]      do_syscall_64+0xc6/0x1e0
[ 9949.031327][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.031327][T12167] 
[ 9949.033603][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9949.033603][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9949.033603][T12167]      ipv6_find_idev+0x102/0x170
[ 9949.033603][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9949.033603][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.033603][T12167]      netlink_rcv_skb+0x130/0x360
[ 9949.033603][T12167]      netlink_unicast+0x449/0x710
[ 9949.033603][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9949.033603][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.033603][T12167]      ___sys_sendmsg+0xee/0x170
[ 9949.033603][T12167]      __sys_sendmsg+0xcd/0x170
[ 9949.033603][T12167]      do_syscall_64+0xc6/0x1e0
[ 9949.033603][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.033603][T12167] 
[ 9949.035341][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9949.035341][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9949.035341][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9949.035341][T12167]      ipv6_find_idev+0x102/0x170
[ 9949.035341][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9949.035341][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.035341][T12167]      netlink_rcv_skb+0x130/0x360
[ 9949.035341][T12167]      netlink_unicast+0x449/0x710
[ 9949.035341][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9949.035341][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.035341][T12167]      ___sys_sendmsg+0xee/0x170
[ 9949.035341][T12167]      __sys_sendmsg+0xcd/0x170
[ 9949.035341][T12167]      do_syscall_64+0xc6/0x1e0
[ 9949.035341][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.035341][T12167] 
[ 9949.542796][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9949.543268][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9949.543268][   T10]      dst_init+0x84/0x4a0
[ 9949.543268][   T10]      dst_alloc+0x97/0x150
[ 9949.543268][   T10]      ip6_dst_alloc+0x23/0x90
[ 9949.543268][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9949.543268][   T10]      ip6_pol_route+0x56f/0x840
[ 9949.543268][   T10]      fib6_rule_lookup+0x334/0x630
[ 9949.543268][   T10]      ip6_route_output_flags+0x259/0x480
[ 9949.543268][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9949.543268][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9949.543268][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9949.543268][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9949.543268][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.543268][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.543268][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.543268][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.543268][   T10] 
[ 9949.545173][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.545173][   T10]      dst_init+0x84/0x4a0
[ 9949.545173][   T10]      dst_alloc+0x97/0x150
[ 9949.545173][   T10]      ip6_dst_alloc+0x23/0x90
[ 9949.545173][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9949.545173][   T10]      ip6_pol_route+0x56f/0x840
[ 9949.545173][   T10]      fib6_rule_lookup+0x334/0x630
[ 9949.545173][   T10]      ip6_route_output_flags+0x259/0x480
[ 9949.545173][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9949.545173][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9949.545173][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9949.545173][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9949.545173][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9949.545173][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.545173][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.545173][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.545173][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.545173][   T10] 
[ 9949.547177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.547177][   T10]      dst_init+0x84/0x4a0
[ 9949.547177][   T10]      dst_alloc+0x97/0x150
[ 9949.547177][   T10]      ip6_dst_alloc+0x23/0x90
[ 9949.547177][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9949.547177][   T10]      ip6_pol_route+0x56f/0x840
[ 9949.547177][   T10]      fib6_rule_lookup+0x334/0x630
[ 9949.547177][   T10]      ip6_route_output_flags+0x259/0x480
[ 9949.547177][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9949.547177][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9949.547177][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9949.547177][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9949.547177][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9949.547177][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.547177][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.547177][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.547177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.547177][   T10] 
[ 9949.549210][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.549210][   T10]      netdev_get_by_index+0x5e/0x80
[ 9949.549210][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9949.549210][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9949.549210][   T10]      ip6_route_add+0x1c/0x140
[ 9949.549210][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9949.549210][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9949.549210][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9949.549210][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.549210][   T10]      netlink_rcv_skb+0x130/0x360
[ 9949.549210][   T10]      netlink_unicast+0x449/0x710
[ 9949.549210][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9949.549210][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.549210][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.549210][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.549210][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.549210][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.549210][   T10] 
[ 9949.551219][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.551219][   T10]      netdev_get_by_index+0x5e/0x80
[ 9949.551219][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9949.551219][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9949.551219][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9949.551219][   T10]      ipv6_add_addr+0x411/0x2000
[ 9949.551219][   T10]      inet6_addr_add+0x30e/0xa40
[ 9949.551219][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9949.551219][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.551219][   T10]      netlink_rcv_skb+0x130/0x360
[ 9949.551219][   T10]      netlink_unicast+0x449/0x710
[ 9949.551219][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9949.551219][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.551219][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.551219][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.551219][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.551219][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.551219][   T10] 
[ 9949.553213][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.553213][   T10]      netdev_get_by_index+0x5e/0x80
[ 9949.553213][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9949.553213][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9949.553213][   T10]      ip6_route_add+0x1c/0x140
[ 9949.553213][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9949.553213][   T10]      addrconf_add_dev+0xe2/0x170
[ 9949.553213][   T10]      inet6_addr_add+0x12f/0xa40
[ 9949.553213][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9949.553213][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.553213][   T10]      netlink_rcv_skb+0x130/0x360
[ 9949.553213][   T10]      netlink_unicast+0x449/0x710
[ 9949.553213][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9949.553213][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.553213][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.553213][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.553213][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.553213][   T10] 
[ 9949.555174][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.555174][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9949.555174][   T10]      ipv6_find_idev+0x102/0x170
[ 9949.555174][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9949.555174][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.555174][   T10]      netlink_rcv_skb+0x130/0x360
[ 9949.555174][   T10]      netlink_unicast+0x449/0x710
[ 9949.555174][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9949.555174][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.555174][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.555174][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.555174][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.555174][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.555174][   T10] 
[ 9949.556713][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9949.556713][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9949.556713][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9949.556713][   T10]      ipv6_find_idev+0x102/0x170
[ 9949.556713][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9949.556713][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9949.556713][   T10]      netlink_rcv_skb+0x130/0x360
[ 9949.556713][   T10]      netlink_unicast+0x449/0x710
[ 9949.556713][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9949.556713][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9949.556713][   T10]      ___sys_sendmsg+0xee/0x170
[ 9949.556713][   T10]      __sys_sendmsg+0xcd/0x170
[ 9949.556713][   T10]      do_syscall_64+0xc6/0x1e0
[ 9949.556713][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9949.556713][   T10] 
[ 9954.598838][   T42] INFO: task modprobe:12646 blocked for more than 1228 seconds.
[ 9954.599186][   T42]       Not tainted 6.8.0-virtme #1
[ 9954.599306][   T42] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9954.599505][   T42] task:modprobe        state:D stack:25856 pid:12646 tgid:12646 ppid:44     flags:0x00004002
[ 9954.599786][   T42] Call Trace:
[ 9954.599892][   T42]  <TASK>
[ 9954.599963][   T42]  __schedule+0x705/0x1ac0
[ 9954.600106][   T42]  ? __pfx___schedule+0x10/0x10
[ 9954.600232][   T42]  ? schedule+0x1a5/0x210
[ 9954.600329][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9954.600461][   T42]  ? mark_lock+0x38/0x3e0
[ 9954.600554][   T42]  ? do_raw_spin_lock+0x131/0x270
[ 9954.600690][   T42]  ? schedule+0x1a5/0x210
[ 9954.600804][   T42]  schedule+0xdf/0x210
[ 9954.600899][   T42]  schedule_preempt_disabled+0x15/0x30
[ 9954.601021][   T42]  rwsem_down_write_slowpath+0x3af/0xab0
[ 9954.601156][   T42]  ? __pfx_rwsem_down_write_slowpath+0x10/0x10
[ 9954.601312][   T42]  ? __pfx_console_unlock+0x10/0x10
[ 9954.601437][   T42]  ? __pfx_lock_acquire.part.0+0x10/0x10
[ 9954.601570][   T42]  ? lock_acquire+0x1c1/0x220
[ 9954.601702][   T42]  ? register_pernet_subsys+0x1a/0x50
[ 9954.601837][   T42]  down_write+0x1c9/0x200
[ 9954.601934][   T42]  ? __pfx_down_write+0x10/0x10
[ 9954.602056][   T42]  ? __pfx__printk+0x10/0x10
[ 9954.602189][   T42]  ? __pfx___lock_release+0x10/0x10
[ 9954.602321][   T42]  register_pernet_subsys+0x1a/0x50
[ 9954.602445][   T42]  tcf_register_action+0xa3/0x600
[ 9954.602571][   T42]  ? __pfx_gact_init_module+0x10/0x10 [act_gact]
[ 9954.602739][   T42]  do_one_initcall+0xc8/0x3f0
[ 9954.602870][   T42]  ? __pfx_do_one_initcall+0x10/0x10
[ 9954.602995][   T42]  ? __create_object+0x5e/0xb0
[ 9954.603129][   T42]  ? kasan_unpoison+0x27/0x60
[ 9954.603261][   T42]  do_init_module+0x233/0x740
[ 9954.603396][   T42]  load_module+0x16b5/0x2350
[ 9954.603534][   T42]  ? __pfx_load_module+0x10/0x10
[ 9954.603656][   T42]  ? kernel_read_file+0x3d2/0x520
[ 9954.603805][   T42]  ? kernel_read_file+0x300/0x520
[ 9954.603936][   T42]  ? __pfx_kernel_read_file+0x10/0x10
[ 9954.604070][   T42]  ? init_module_from_file+0xd2/0x130
[ 9954.604191][   T42]  init_module_from_file+0xd2/0x130
[ 9954.604319][   T42]  ? __pfx_init_module_from_file+0x10/0x10
[ 9954.604472][   T42]  ? __lock_release+0x103/0x460
[ 9954.604602][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9954.604749][   T42]  ? idempotent_init_module+0x32a/0x620
[ 9954.604873][   T42]  ? do_raw_spin_unlock+0x58/0x220
[ 9954.604998][   T42]  idempotent_init_module+0x342/0x620
[ 9954.605127][   T42]  ? __pfx_idempotent_init_module+0x10/0x10
[ 9954.605302][   T42]  __x64_sys_finit_module+0xbe/0x130
[ 9954.605427][   T42]  do_syscall_64+0xc6/0x1e0
[ 9954.605559][   T42]  entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9954.605725][   T42] RIP: 0033:0x7fac120f1e5d
[ 9954.605853][   T42] RSP: 002b:00007ffc57d8a578 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 9954.606038][   T42] RAX: ffffffffffffffda RBX: 0000557fdddd7c80 RCX: 00007fac120f1e5d
[ 9954.606222][   T42] RDX: 0000000000000000 RSI: 0000557fb6aeba2a RDI: 0000000000000000
[ 9954.606411][   T42] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007ffc57d8a6b0
[ 9954.606592][   T42] R10: 0000000000000000 R11: 0000000000000246 R12: 0000557fb6aeba2a
[ 9954.606784][   T42] R13: 0000557fdddd7ac0 R14: 0000557fdddd80b0 R15: 0000557fdddd7cf1
[ 9954.606979][   T42]  </TASK>
[ 9954.607072][   T42] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
[ 9954.607285][   T42] 
[ 9954.607285][   T42] Showing all locks held in the system:
[ 9954.607458][   T42] 3 locks held by kworker/u16:0/10:
[ 9954.607577][   T42]  #0: ffff88800190a948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9954.607850][   T42]  #1: ffffc900000afda0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9954.608074][   T42]  #2: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbc/0xb60
[ 9954.608299][   T42] 1 lock held by khungtaskd/42:
[ 9954.608418][   T42]  #0: ffffffff917591e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x350
[ 9954.608636][   T42] 2 locks held by kworker/u17:1/44:
[ 9954.608764][   T42]  #0: ffff888001161d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0xfae/0x18a0
[ 9954.609017][   T42]  #1: ffffc90000317da0 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7cd/0x18a0
[ 9954.609298][   T42] 1 lock held by modprobe/12646:
[ 9954.609418][   T42]  #0: ffffffff91f6a1d0 (pernet_ops_rwsem){++++}-{3:3}, at: register_pernet_subsys+0x1a/0x50
[ 9954.609665][   T42] 
[ 9954.609735][   T42] =============================================
[ 9954.609735][   T42] 
[ 9959.286731][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9959.287249][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9959.287249][T12167]      netdev_get_by_index+0x5e/0x80
[ 9959.287249][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9959.287249][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9959.287249][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9959.287249][T12167]      ipv6_add_addr+0x411/0x2000
[ 9959.287249][T12167]      inet6_addr_add+0x30e/0xa40
[ 9959.287249][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9959.287249][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.287249][T12167]      netlink_rcv_skb+0x130/0x360
[ 9959.287249][T12167]      netlink_unicast+0x449/0x710
[ 9959.287249][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9959.287249][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.287249][T12167]      ___sys_sendmsg+0xee/0x170
[ 9959.287249][T12167]      __sys_sendmsg+0xcd/0x170
[ 9959.287249][T12167]      do_syscall_64+0xc6/0x1e0
[ 9959.287249][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.287249][T12167] 
[ 9959.289561][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9959.289561][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9959.289561][T12167]      ipv6_find_idev+0x102/0x170
[ 9959.289561][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9959.289561][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.289561][T12167]      netlink_rcv_skb+0x130/0x360
[ 9959.289561][T12167]      netlink_unicast+0x449/0x710
[ 9959.289561][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9959.289561][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.289561][T12167]      ___sys_sendmsg+0xee/0x170
[ 9959.289561][T12167]      __sys_sendmsg+0xcd/0x170
[ 9959.289561][T12167]      do_syscall_64+0xc6/0x1e0
[ 9959.289561][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.289561][T12167] 
[ 9959.291321][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9959.291321][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9959.291321][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9959.291321][T12167]      ipv6_find_idev+0x102/0x170
[ 9959.291321][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9959.291321][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.291321][T12167]      netlink_rcv_skb+0x130/0x360
[ 9959.291321][T12167]      netlink_unicast+0x449/0x710
[ 9959.291321][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9959.291321][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.291321][T12167]      ___sys_sendmsg+0xee/0x170
[ 9959.291321][T12167]      __sys_sendmsg+0xcd/0x170
[ 9959.291321][T12167]      do_syscall_64+0xc6/0x1e0
[ 9959.291321][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.291321][T12167] 
[ 9959.806805][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9959.807300][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9959.807300][   T10]      dst_init+0x84/0x4a0
[ 9959.807300][   T10]      dst_alloc+0x97/0x150
[ 9959.807300][   T10]      ip6_dst_alloc+0x23/0x90
[ 9959.807300][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9959.807300][   T10]      ip6_pol_route+0x56f/0x840
[ 9959.807300][   T10]      fib6_rule_lookup+0x334/0x630
[ 9959.807300][   T10]      ip6_route_output_flags+0x259/0x480
[ 9959.807300][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9959.807300][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9959.807300][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9959.807300][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9959.807300][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.807300][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.807300][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.807300][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.807300][   T10] 
[ 9959.809212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.809212][   T10]      dst_init+0x84/0x4a0
[ 9959.809212][   T10]      dst_alloc+0x97/0x150
[ 9959.809212][   T10]      ip6_dst_alloc+0x23/0x90
[ 9959.809212][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9959.809212][   T10]      ip6_pol_route+0x56f/0x840
[ 9959.809212][   T10]      fib6_rule_lookup+0x334/0x630
[ 9959.809212][   T10]      ip6_route_output_flags+0x259/0x480
[ 9959.809212][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9959.809212][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9959.809212][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9959.809212][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9959.809212][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9959.809212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.809212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.809212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.809212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.809212][   T10] 
[ 9959.811321][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.811321][   T10]      dst_init+0x84/0x4a0
[ 9959.811321][   T10]      dst_alloc+0x97/0x150
[ 9959.811321][   T10]      ip6_dst_alloc+0x23/0x90
[ 9959.811321][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9959.811321][   T10]      ip6_pol_route+0x56f/0x840
[ 9959.811321][   T10]      fib6_rule_lookup+0x334/0x630
[ 9959.811321][   T10]      ip6_route_output_flags+0x259/0x480
[ 9959.811321][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9959.811321][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9959.811321][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9959.811321][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9959.811321][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9959.811321][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.811321][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.811321][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.811321][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.811321][   T10] 
[ 9959.813314][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.813314][   T10]      netdev_get_by_index+0x5e/0x80
[ 9959.813314][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9959.813314][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9959.813314][   T10]      ip6_route_add+0x1c/0x140
[ 9959.813314][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9959.813314][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9959.813314][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9959.813314][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.813314][   T10]      netlink_rcv_skb+0x130/0x360
[ 9959.813314][   T10]      netlink_unicast+0x449/0x710
[ 9959.813314][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9959.813314][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.813314][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.813314][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.813314][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.813314][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.813314][   T10] 
[ 9959.815311][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.815311][   T10]      netdev_get_by_index+0x5e/0x80
[ 9959.815311][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9959.815311][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9959.815311][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9959.815311][   T10]      ipv6_add_addr+0x411/0x2000
[ 9959.815311][   T10]      inet6_addr_add+0x30e/0xa40
[ 9959.815311][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9959.815311][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.815311][   T10]      netlink_rcv_skb+0x130/0x360
[ 9959.815311][   T10]      netlink_unicast+0x449/0x710
[ 9959.815311][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9959.815311][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.815311][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.815311][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.815311][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.815311][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.815311][   T10] 
[ 9959.817295][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.817295][   T10]      netdev_get_by_index+0x5e/0x80
[ 9959.817295][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9959.817295][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9959.817295][   T10]      ip6_route_add+0x1c/0x140
[ 9959.817295][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9959.817295][   T10]      addrconf_add_dev+0xe2/0x170
[ 9959.817295][   T10]      inet6_addr_add+0x12f/0xa40
[ 9959.817295][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9959.817295][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.817295][   T10]      netlink_rcv_skb+0x130/0x360
[ 9959.817295][   T10]      netlink_unicast+0x449/0x710
[ 9959.817295][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9959.817295][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.817295][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.817295][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.817295][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.817295][   T10] 
[ 9959.819272][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.819272][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9959.819272][   T10]      ipv6_find_idev+0x102/0x170
[ 9959.819272][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9959.819272][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.819272][   T10]      netlink_rcv_skb+0x130/0x360
[ 9959.819272][   T10]      netlink_unicast+0x449/0x710
[ 9959.819272][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9959.819272][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.819272][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.819272][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.819272][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.819272][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.819272][   T10] 
[ 9959.820803][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9959.820803][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9959.820803][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9959.820803][   T10]      ipv6_find_idev+0x102/0x170
[ 9959.820803][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9959.820803][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9959.820803][   T10]      netlink_rcv_skb+0x130/0x360
[ 9959.820803][   T10]      netlink_unicast+0x449/0x710
[ 9959.820803][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9959.820803][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9959.820803][   T10]      ___sys_sendmsg+0xee/0x170
[ 9959.820803][   T10]      __sys_sendmsg+0xcd/0x170
[ 9959.820803][   T10]      do_syscall_64+0xc6/0x1e0
[ 9959.820803][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9959.820803][   T10] 
[ 9969.542816][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9969.543322][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9969.543322][T12167]      netdev_get_by_index+0x5e/0x80
[ 9969.543322][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9969.543322][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9969.543322][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9969.543322][T12167]      ipv6_add_addr+0x411/0x2000
[ 9969.543322][T12167]      inet6_addr_add+0x30e/0xa40
[ 9969.543322][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9969.543322][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.543322][T12167]      netlink_rcv_skb+0x130/0x360
[ 9969.543322][T12167]      netlink_unicast+0x449/0x710
[ 9969.543322][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9969.543322][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.543322][T12167]      ___sys_sendmsg+0xee/0x170
[ 9969.543322][T12167]      __sys_sendmsg+0xcd/0x170
[ 9969.543322][T12167]      do_syscall_64+0xc6/0x1e0
[ 9969.543322][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.543322][T12167] 
[ 9969.545610][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9969.545610][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9969.545610][T12167]      ipv6_find_idev+0x102/0x170
[ 9969.545610][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9969.545610][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.545610][T12167]      netlink_rcv_skb+0x130/0x360
[ 9969.545610][T12167]      netlink_unicast+0x449/0x710
[ 9969.545610][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9969.545610][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.545610][T12167]      ___sys_sendmsg+0xee/0x170
[ 9969.545610][T12167]      __sys_sendmsg+0xcd/0x170
[ 9969.545610][T12167]      do_syscall_64+0xc6/0x1e0
[ 9969.545610][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.545610][T12167] 
[ 9969.547355][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9969.547355][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9969.547355][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9969.547355][T12167]      ipv6_find_idev+0x102/0x170
[ 9969.547355][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9969.547355][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.547355][T12167]      netlink_rcv_skb+0x130/0x360
[ 9969.547355][T12167]      netlink_unicast+0x449/0x710
[ 9969.547355][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9969.547355][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.547355][T12167]      ___sys_sendmsg+0xee/0x170
[ 9969.547355][T12167]      __sys_sendmsg+0xcd/0x170
[ 9969.547355][T12167]      do_syscall_64+0xc6/0x1e0
[ 9969.547355][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.547355][T12167] 
[ 9969.870815][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9969.871219][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9969.871219][   T10]      dst_init+0x84/0x4a0
[ 9969.871219][   T10]      dst_alloc+0x97/0x150
[ 9969.871219][   T10]      ip6_dst_alloc+0x23/0x90
[ 9969.871219][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9969.871219][   T10]      ip6_pol_route+0x56f/0x840
[ 9969.871219][   T10]      fib6_rule_lookup+0x334/0x630
[ 9969.871219][   T10]      ip6_route_output_flags+0x259/0x480
[ 9969.871219][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9969.871219][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9969.871219][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9969.871219][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9969.871219][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.871219][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.871219][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.871219][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.871219][   T10] 
[ 9969.873117][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.873117][   T10]      dst_init+0x84/0x4a0
[ 9969.873117][   T10]      dst_alloc+0x97/0x150
[ 9969.873117][   T10]      ip6_dst_alloc+0x23/0x90
[ 9969.873117][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9969.873117][   T10]      ip6_pol_route+0x56f/0x840
[ 9969.873117][   T10]      fib6_rule_lookup+0x334/0x630
[ 9969.873117][   T10]      ip6_route_output_flags+0x259/0x480
[ 9969.873117][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9969.873117][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9969.873117][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9969.873117][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9969.873117][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9969.873117][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.873117][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.873117][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.873117][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.873117][   T10] 
[ 9969.875113][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.875113][   T10]      dst_init+0x84/0x4a0
[ 9969.875113][   T10]      dst_alloc+0x97/0x150
[ 9969.875113][   T10]      ip6_dst_alloc+0x23/0x90
[ 9969.875113][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9969.875113][   T10]      ip6_pol_route+0x56f/0x840
[ 9969.875113][   T10]      fib6_rule_lookup+0x334/0x630
[ 9969.875113][   T10]      ip6_route_output_flags+0x259/0x480
[ 9969.875113][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9969.875113][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9969.875113][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9969.875113][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9969.875113][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9969.875113][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.875113][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.875113][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.875113][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.875113][   T10] 
[ 9969.877119][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.877119][   T10]      netdev_get_by_index+0x5e/0x80
[ 9969.877119][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9969.877119][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9969.877119][   T10]      ip6_route_add+0x1c/0x140
[ 9969.877119][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9969.877119][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9969.877119][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9969.877119][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.877119][   T10]      netlink_rcv_skb+0x130/0x360
[ 9969.877119][   T10]      netlink_unicast+0x449/0x710
[ 9969.877119][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9969.877119][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.877119][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.877119][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.877119][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.877119][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.877119][   T10] 
[ 9969.879132][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.879132][   T10]      netdev_get_by_index+0x5e/0x80
[ 9969.879132][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9969.879132][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9969.879132][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9969.879132][   T10]      ipv6_add_addr+0x411/0x2000
[ 9969.879132][   T10]      inet6_addr_add+0x30e/0xa40
[ 9969.879132][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9969.879132][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.879132][   T10]      netlink_rcv_skb+0x130/0x360
[ 9969.879132][   T10]      netlink_unicast+0x449/0x710
[ 9969.879132][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9969.879132][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.879132][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.879132][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.879132][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.879132][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.879132][   T10] 
[ 9969.881125][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.881125][   T10]      netdev_get_by_index+0x5e/0x80
[ 9969.881125][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9969.881125][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9969.881125][   T10]      ip6_route_add+0x1c/0x140
[ 9969.881125][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9969.881125][   T10]      addrconf_add_dev+0xe2/0x170
[ 9969.881125][   T10]      inet6_addr_add+0x12f/0xa40
[ 9969.881125][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9969.881125][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.881125][   T10]      netlink_rcv_skb+0x130/0x360
[ 9969.881125][   T10]      netlink_unicast+0x449/0x710
[ 9969.881125][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9969.881125][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.881125][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.881125][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.881125][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.881125][   T10] 
[ 9969.883088][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.883088][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9969.883088][   T10]      ipv6_find_idev+0x102/0x170
[ 9969.883088][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9969.883088][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.883088][   T10]      netlink_rcv_skb+0x130/0x360
[ 9969.883088][   T10]      netlink_unicast+0x449/0x710
[ 9969.883088][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9969.883088][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.883088][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.883088][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.883088][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.883088][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.883088][   T10] 
[ 9969.884635][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9969.884635][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9969.884635][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9969.884635][   T10]      ipv6_find_idev+0x102/0x170
[ 9969.884635][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9969.884635][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9969.884635][   T10]      netlink_rcv_skb+0x130/0x360
[ 9969.884635][   T10]      netlink_unicast+0x449/0x710
[ 9969.884635][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9969.884635][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9969.884635][   T10]      ___sys_sendmsg+0xee/0x170
[ 9969.884635][   T10]      __sys_sendmsg+0xcd/0x170
[ 9969.884635][   T10]      do_syscall_64+0xc6/0x1e0
[ 9969.884635][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9969.884635][   T10] 
[ 9979.798804][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9979.799269][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9979.799269][T12167]      netdev_get_by_index+0x5e/0x80
[ 9979.799269][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9979.799269][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9979.799269][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9979.799269][T12167]      ipv6_add_addr+0x411/0x2000
[ 9979.799269][T12167]      inet6_addr_add+0x30e/0xa40
[ 9979.799269][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9979.799269][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9979.799269][T12167]      netlink_rcv_skb+0x130/0x360
[ 9979.799269][T12167]      netlink_unicast+0x449/0x710
[ 9979.799269][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9979.799269][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9979.799269][T12167]      ___sys_sendmsg+0xee/0x170
[ 9979.799269][T12167]      __sys_sendmsg+0xcd/0x170
[ 9979.799269][T12167]      do_syscall_64+0xc6/0x1e0
[ 9979.799269][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9979.799269][T12167] 
[ 9979.801599][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9979.801599][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9979.801599][T12167]      ipv6_find_idev+0x102/0x170
[ 9979.801599][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9979.801599][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9979.801599][T12167]      netlink_rcv_skb+0x130/0x360
[ 9979.801599][T12167]      netlink_unicast+0x449/0x710
[ 9979.801599][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9979.801599][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9979.801599][T12167]      ___sys_sendmsg+0xee/0x170
[ 9979.801599][T12167]      __sys_sendmsg+0xcd/0x170
[ 9979.801599][T12167]      do_syscall_64+0xc6/0x1e0
[ 9979.801599][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9979.801599][T12167] 
[ 9979.803346][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9979.803346][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9979.803346][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9979.803346][T12167]      ipv6_find_idev+0x102/0x170
[ 9979.803346][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9979.803346][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9979.803346][T12167]      netlink_rcv_skb+0x130/0x360
[ 9979.803346][T12167]      netlink_unicast+0x449/0x710
[ 9979.803346][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9979.803346][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9979.803346][T12167]      ___sys_sendmsg+0xee/0x170
[ 9979.803346][T12167]      __sys_sendmsg+0xcd/0x170
[ 9979.803346][T12167]      do_syscall_64+0xc6/0x1e0
[ 9979.803346][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9979.803346][T12167] 
[ 9980.134800][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9980.135143][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9980.135143][   T10]      dst_init+0x84/0x4a0
[ 9980.135143][   T10]      dst_alloc+0x97/0x150
[ 9980.135143][   T10]      ip6_dst_alloc+0x23/0x90
[ 9980.135143][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9980.135143][   T10]      ip6_pol_route+0x56f/0x840
[ 9980.135143][   T10]      fib6_rule_lookup+0x334/0x630
[ 9980.135143][   T10]      ip6_route_output_flags+0x259/0x480
[ 9980.135143][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9980.135143][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9980.135143][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9980.135143][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9980.135143][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.135143][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.135143][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.135143][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.135143][   T10] 
[ 9980.137052][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.137052][   T10]      dst_init+0x84/0x4a0
[ 9980.137052][   T10]      dst_alloc+0x97/0x150
[ 9980.137052][   T10]      ip6_dst_alloc+0x23/0x90
[ 9980.137052][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9980.137052][   T10]      ip6_pol_route+0x56f/0x840
[ 9980.137052][   T10]      fib6_rule_lookup+0x334/0x630
[ 9980.137052][   T10]      ip6_route_output_flags+0x259/0x480
[ 9980.137052][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9980.137052][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9980.137052][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9980.137052][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9980.137052][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9980.137052][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.137052][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.137052][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.137052][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.137052][   T10] 
[ 9980.139074][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.139074][   T10]      dst_init+0x84/0x4a0
[ 9980.139074][   T10]      dst_alloc+0x97/0x150
[ 9980.139074][   T10]      ip6_dst_alloc+0x23/0x90
[ 9980.139074][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9980.139074][   T10]      ip6_pol_route+0x56f/0x840
[ 9980.139074][   T10]      fib6_rule_lookup+0x334/0x630
[ 9980.139074][   T10]      ip6_route_output_flags+0x259/0x480
[ 9980.139074][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9980.139074][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9980.139074][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9980.139074][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9980.139074][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9980.139074][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.139074][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.139074][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.139074][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.139074][   T10] 
[ 9980.141071][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.141071][   T10]      netdev_get_by_index+0x5e/0x80
[ 9980.141071][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9980.141071][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9980.141071][   T10]      ip6_route_add+0x1c/0x140
[ 9980.141071][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9980.141071][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9980.141071][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9980.141071][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9980.141071][   T10]      netlink_rcv_skb+0x130/0x360
[ 9980.141071][   T10]      netlink_unicast+0x449/0x710
[ 9980.141071][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9980.141071][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9980.141071][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.141071][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.141071][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.141071][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.141071][   T10] 
[ 9980.143081][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.143081][   T10]      netdev_get_by_index+0x5e/0x80
[ 9980.143081][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9980.143081][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9980.143081][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9980.143081][   T10]      ipv6_add_addr+0x411/0x2000
[ 9980.143081][   T10]      inet6_addr_add+0x30e/0xa40
[ 9980.143081][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9980.143081][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9980.143081][   T10]      netlink_rcv_skb+0x130/0x360
[ 9980.143081][   T10]      netlink_unicast+0x449/0x710
[ 9980.143081][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9980.143081][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9980.143081][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.143081][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.143081][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.143081][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.143081][   T10] 
[ 9980.145082][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.145082][   T10]      netdev_get_by_index+0x5e/0x80
[ 9980.145082][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9980.145082][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9980.145082][   T10]      ip6_route_add+0x1c/0x140
[ 9980.145082][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9980.145082][   T10]      addrconf_add_dev+0xe2/0x170
[ 9980.145082][   T10]      inet6_addr_add+0x12f/0xa40
[ 9980.145082][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9980.145082][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9980.145082][   T10]      netlink_rcv_skb+0x130/0x360
[ 9980.145082][   T10]      netlink_unicast+0x449/0x710
[ 9980.145082][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9980.145082][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9980.145082][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.145082][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.145082][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.145082][   T10] 
[ 9980.147057][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.147057][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9980.147057][   T10]      ipv6_find_idev+0x102/0x170
[ 9980.147057][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9980.147057][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9980.147057][   T10]      netlink_rcv_skb+0x130/0x360
[ 9980.147057][   T10]      netlink_unicast+0x449/0x710
[ 9980.147057][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9980.147057][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9980.147057][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.147057][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.147057][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.147057][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.147057][   T10] 
[ 9980.148678][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9980.148678][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9980.148678][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9980.148678][   T10]      ipv6_find_idev+0x102/0x170
[ 9980.148678][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9980.148678][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9980.148678][   T10]      netlink_rcv_skb+0x130/0x360
[ 9980.148678][   T10]      netlink_unicast+0x449/0x710
[ 9980.148678][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9980.148678][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9980.148678][   T10]      ___sys_sendmsg+0xee/0x170
[ 9980.148678][   T10]      __sys_sendmsg+0xcd/0x170
[ 9980.148678][   T10]      do_syscall_64+0xc6/0x1e0
[ 9980.148678][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9980.148678][   T10] 
[ 9990.054817][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[ 9990.055261][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9990.055261][T12167]      netdev_get_by_index+0x5e/0x80
[ 9990.055261][T12167]      fib6_nh_init+0x3d8/0x1580
[ 9990.055261][T12167]      ip6_route_info_create+0xf18/0x17d0
[ 9990.055261][T12167]      addrconf_f6i_alloc+0x315/0x560
[ 9990.055261][T12167]      ipv6_add_addr+0x411/0x2000
[ 9990.055261][T12167]      inet6_addr_add+0x30e/0xa40
[ 9990.055261][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[ 9990.055261][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.055261][T12167]      netlink_rcv_skb+0x130/0x360
[ 9990.055261][T12167]      netlink_unicast+0x449/0x710
[ 9990.055261][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9990.055261][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.055261][T12167]      ___sys_sendmsg+0xee/0x170
[ 9990.055261][T12167]      __sys_sendmsg+0xcd/0x170
[ 9990.055261][T12167]      do_syscall_64+0xc6/0x1e0
[ 9990.055261][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.055261][T12167] 
[ 9990.057520][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9990.057520][T12167]      ipv6_add_dev+0x3ba/0x11c0
[ 9990.057520][T12167]      ipv6_find_idev+0x102/0x170
[ 9990.057520][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9990.057520][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.057520][T12167]      netlink_rcv_skb+0x130/0x360
[ 9990.057520][T12167]      netlink_unicast+0x449/0x710
[ 9990.057520][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9990.057520][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.057520][T12167]      ___sys_sendmsg+0xee/0x170
[ 9990.057520][T12167]      __sys_sendmsg+0xcd/0x170
[ 9990.057520][T12167]      do_syscall_64+0xc6/0x1e0
[ 9990.057520][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.057520][T12167] 
[ 9990.059251][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[ 9990.059251][T12167]      neigh_parms_alloc+0x1e5/0x510
[ 9990.059251][T12167]      ipv6_add_dev+0x2fe/0x11c0
[ 9990.059251][T12167]      ipv6_find_idev+0x102/0x170
[ 9990.059251][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9990.059251][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.059251][T12167]      netlink_rcv_skb+0x130/0x360
[ 9990.059251][T12167]      netlink_unicast+0x449/0x710
[ 9990.059251][T12167]      netlink_sendmsg+0x723/0xbe0
[ 9990.059251][T12167]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.059251][T12167]      ___sys_sendmsg+0xee/0x170
[ 9990.059251][T12167]      __sys_sendmsg+0xcd/0x170
[ 9990.059251][T12167]      do_syscall_64+0xc6/0x1e0
[ 9990.059251][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.059251][T12167] 
[ 9990.150822][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[ 9990.151212][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[ 9990.151212][   T10]      dst_init+0x84/0x4a0
[ 9990.151212][   T10]      dst_alloc+0x97/0x150
[ 9990.151212][   T10]      ip6_dst_alloc+0x23/0x90
[ 9990.151212][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9990.151212][   T10]      ip6_pol_route+0x56f/0x840
[ 9990.151212][   T10]      fib6_rule_lookup+0x334/0x630
[ 9990.151212][   T10]      ip6_route_output_flags+0x259/0x480
[ 9990.151212][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9990.151212][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9990.151212][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[ 9990.151212][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9990.151212][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.151212][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.151212][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.151212][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.151212][   T10] 
[ 9990.153102][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.153102][   T10]      dst_init+0x84/0x4a0
[ 9990.153102][   T10]      dst_alloc+0x97/0x150
[ 9990.153102][   T10]      ip6_dst_alloc+0x23/0x90
[ 9990.153102][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9990.153102][   T10]      ip6_pol_route+0x56f/0x840
[ 9990.153102][   T10]      fib6_rule_lookup+0x334/0x630
[ 9990.153102][   T10]      ip6_route_output_flags+0x259/0x480
[ 9990.153102][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9990.153102][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9990.153102][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9990.153102][   T10]      ping_v6_sendmsg+0x763/0x1150
[ 9990.153102][   T10]      ____sys_sendmsg+0x772/0xa10
[ 9990.153102][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.153102][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.153102][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.153102][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.153102][   T10] 
[ 9990.155082][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.155082][   T10]      dst_init+0x84/0x4a0
[ 9990.155082][   T10]      dst_alloc+0x97/0x150
[ 9990.155082][   T10]      ip6_dst_alloc+0x23/0x90
[ 9990.155082][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[ 9990.155082][   T10]      ip6_pol_route+0x56f/0x840
[ 9990.155082][   T10]      fib6_rule_lookup+0x334/0x630
[ 9990.155082][   T10]      ip6_route_output_flags+0x259/0x480
[ 9990.155082][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[ 9990.155082][   T10]      ip6_dst_lookup_flow+0x88/0x190
[ 9990.155082][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[ 9990.155082][   T10]      udpv6_sendmsg+0xfdc/0x2830
[ 9990.155082][   T10]      ____sys_sendmsg+0x3f9/0xa10
[ 9990.155082][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.155082][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.155082][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.155082][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.155082][   T10] 
[ 9990.157082][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.157082][   T10]      netdev_get_by_index+0x5e/0x80
[ 9990.157082][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9990.157082][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9990.157082][   T10]      ip6_route_add+0x1c/0x140
[ 9990.157082][   T10]      addrconf_prefix_route+0x2a6/0x430
[ 9990.157082][   T10]      inet6_addr_add+0x4f8/0xa40
[ 9990.157082][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9990.157082][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.157082][   T10]      netlink_rcv_skb+0x130/0x360
[ 9990.157082][   T10]      netlink_unicast+0x449/0x710
[ 9990.157082][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9990.157082][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.157082][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.157082][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.157082][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.157082][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.157082][   T10] 
[ 9990.159082][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.159082][   T10]      netdev_get_by_index+0x5e/0x80
[ 9990.159082][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9990.159082][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9990.159082][   T10]      addrconf_f6i_alloc+0x315/0x560
[ 9990.159082][   T10]      ipv6_add_addr+0x411/0x2000
[ 9990.159082][   T10]      inet6_addr_add+0x30e/0xa40
[ 9990.159082][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9990.159082][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.159082][   T10]      netlink_rcv_skb+0x130/0x360
[ 9990.159082][   T10]      netlink_unicast+0x449/0x710
[ 9990.159082][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9990.159082][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.159082][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.159082][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.159082][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.159082][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.159082][   T10] 
[ 9990.161076][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.161076][   T10]      netdev_get_by_index+0x5e/0x80
[ 9990.161076][   T10]      fib6_nh_init+0x3d8/0x1580
[ 9990.161076][   T10]      ip6_route_info_create+0xf18/0x17d0
[ 9990.161076][   T10]      ip6_route_add+0x1c/0x140
[ 9990.161076][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[ 9990.161076][   T10]      addrconf_add_dev+0xe2/0x170
[ 9990.161076][   T10]      inet6_addr_add+0x12f/0xa40
[ 9990.161076][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[ 9990.161076][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.161076][   T10]      netlink_rcv_skb+0x130/0x360
[ 9990.161076][   T10]      netlink_unicast+0x449/0x710
[ 9990.161076][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9990.161076][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.161076][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.161076][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.161076][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.161076][   T10] 
[ 9990.163034][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.163034][   T10]      ipv6_add_dev+0x3ba/0x11c0
[ 9990.163034][   T10]      ipv6_find_idev+0x102/0x170
[ 9990.163034][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9990.163034][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.163034][   T10]      netlink_rcv_skb+0x130/0x360
[ 9990.163034][   T10]      netlink_unicast+0x449/0x710
[ 9990.163034][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9990.163034][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.163034][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.163034][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.163034][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.163034][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.163034][   T10] 
[ 9990.164575][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[ 9990.164575][   T10]      neigh_parms_alloc+0x1e5/0x510
[ 9990.164575][   T10]      ipv6_add_dev+0x2fe/0x11c0
[ 9990.164575][   T10]      ipv6_find_idev+0x102/0x170
[ 9990.164575][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[ 9990.164575][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[ 9990.164575][   T10]      netlink_rcv_skb+0x130/0x360
[ 9990.164575][   T10]      netlink_unicast+0x449/0x710
[ 9990.164575][   T10]      netlink_sendmsg+0x723/0xbe0
[ 9990.164575][   T10]      ____sys_sendmsg+0x7b2/0xa10
[ 9990.164575][   T10]      ___sys_sendmsg+0xee/0x170
[ 9990.164575][   T10]      __sys_sendmsg+0xcd/0x170
[ 9990.164575][   T10]      do_syscall_64+0xc6/0x1e0
[ 9990.164575][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[ 9990.164575][   T10] 
[10000.174820][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10000.175301][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10000.175301][   T10]      dst_init+0x84/0x4a0
[10000.175301][   T10]      dst_alloc+0x97/0x150
[10000.175301][   T10]      ip6_dst_alloc+0x23/0x90
[10000.175301][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10000.175301][   T10]      ip6_pol_route+0x56f/0x840
[10000.175301][   T10]      fib6_rule_lookup+0x334/0x630
[10000.175301][   T10]      ip6_route_output_flags+0x259/0x480
[10000.175301][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10000.175301][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10000.175301][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10000.175301][   T10]      ____sys_sendmsg+0x772/0xa10
[10000.175301][   T10]      ___sys_sendmsg+0xee/0x170
[10000.175301][   T10]      __sys_sendmsg+0xcd/0x170
[10000.175301][   T10]      do_syscall_64+0xc6/0x1e0
[10000.175301][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.175301][   T10] 
[10000.177226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.177226][   T10]      dst_init+0x84/0x4a0
[10000.177226][   T10]      dst_alloc+0x97/0x150
[10000.177226][   T10]      ip6_dst_alloc+0x23/0x90
[10000.177226][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10000.177226][   T10]      ip6_pol_route+0x56f/0x840
[10000.177226][   T10]      fib6_rule_lookup+0x334/0x630
[10000.177226][   T10]      ip6_route_output_flags+0x259/0x480
[10000.177226][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10000.177226][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10000.177226][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10000.177226][   T10]      ping_v6_sendmsg+0x763/0x1150
[10000.177226][   T10]      ____sys_sendmsg+0x772/0xa10
[10000.177226][   T10]      ___sys_sendmsg+0xee/0x170
[10000.177226][   T10]      __sys_sendmsg+0xcd/0x170
[10000.177226][   T10]      do_syscall_64+0xc6/0x1e0
[10000.177226][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.177226][   T10] 
[10000.179236][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.179236][   T10]      dst_init+0x84/0x4a0
[10000.179236][   T10]      dst_alloc+0x97/0x150
[10000.179236][   T10]      ip6_dst_alloc+0x23/0x90
[10000.179236][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10000.179236][   T10]      ip6_pol_route+0x56f/0x840
[10000.179236][   T10]      fib6_rule_lookup+0x334/0x630
[10000.179236][   T10]      ip6_route_output_flags+0x259/0x480
[10000.179236][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10000.179236][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10000.179236][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10000.179236][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10000.179236][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10000.179236][   T10]      ___sys_sendmsg+0xee/0x170
[10000.179236][   T10]      __sys_sendmsg+0xcd/0x170
[10000.179236][   T10]      do_syscall_64+0xc6/0x1e0
[10000.179236][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.179236][   T10] 
[10000.181242][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.181242][   T10]      netdev_get_by_index+0x5e/0x80
[10000.181242][   T10]      fib6_nh_init+0x3d8/0x1580
[10000.181242][   T10]      ip6_route_info_create+0xf18/0x17d0
[10000.181242][   T10]      ip6_route_add+0x1c/0x140
[10000.181242][   T10]      addrconf_prefix_route+0x2a6/0x430
[10000.181242][   T10]      inet6_addr_add+0x4f8/0xa40
[10000.181242][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10000.181242][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.181242][   T10]      netlink_rcv_skb+0x130/0x360
[10000.181242][   T10]      netlink_unicast+0x449/0x710
[10000.181242][   T10]      netlink_sendmsg+0x723/0xbe0
[10000.181242][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10000.181242][   T10]      ___sys_sendmsg+0xee/0x170
[10000.181242][   T10]      __sys_sendmsg+0xcd/0x170
[10000.181242][   T10]      do_syscall_64+0xc6/0x1e0
[10000.181242][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.181242][   T10] 
[10000.183247][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.183247][   T10]      netdev_get_by_index+0x5e/0x80
[10000.183247][   T10]      fib6_nh_init+0x3d8/0x1580
[10000.183247][   T10]      ip6_route_info_create+0xf18/0x17d0
[10000.183247][   T10]      addrconf_f6i_alloc+0x315/0x560
[10000.183247][   T10]      ipv6_add_addr+0x411/0x2000
[10000.183247][   T10]      inet6_addr_add+0x30e/0xa40
[10000.183247][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10000.183247][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.183247][   T10]      netlink_rcv_skb+0x130/0x360
[10000.183247][   T10]      netlink_unicast+0x449/0x710
[10000.183247][   T10]      netlink_sendmsg+0x723/0xbe0
[10000.183247][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10000.183247][   T10]      ___sys_sendmsg+0xee/0x170
[10000.183247][   T10]      __sys_sendmsg+0xcd/0x170
[10000.183247][   T10]      do_syscall_64+0xc6/0x1e0
[10000.183247][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.183247][   T10] 
[10000.185246][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.185246][   T10]      netdev_get_by_index+0x5e/0x80
[10000.185246][   T10]      fib6_nh_init+0x3d8/0x1580
[10000.185246][   T10]      ip6_route_info_create+0xf18/0x17d0
[10000.185246][   T10]      ip6_route_add+0x1c/0x140
[10000.185246][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10000.185246][   T10]      addrconf_add_dev+0xe2/0x170
[10000.185246][   T10]      inet6_addr_add+0x12f/0xa40
[10000.185246][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10000.185246][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.185246][   T10]      netlink_rcv_skb+0x130/0x360
[10000.185246][   T10]      netlink_unicast+0x449/0x710
[10000.185246][   T10]      netlink_sendmsg+0x723/0xbe0
[10000.185246][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10000.185246][   T10]      ___sys_sendmsg+0xee/0x170
[10000.185246][   T10]      __sys_sendmsg+0xcd/0x170
[10000.185246][   T10]      do_syscall_64+0xc6/0x1e0
[10000.185246][   T10] 
[10000.187207][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.187207][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10000.187207][   T10]      ipv6_find_idev+0x102/0x170
[10000.187207][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10000.187207][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.187207][   T10]      netlink_rcv_skb+0x130/0x360
[10000.187207][   T10]      netlink_unicast+0x449/0x710
[10000.187207][   T10]      netlink_sendmsg+0x723/0xbe0
[10000.187207][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10000.187207][   T10]      ___sys_sendmsg+0xee/0x170
[10000.187207][   T10]      __sys_sendmsg+0xcd/0x170
[10000.187207][   T10]      do_syscall_64+0xc6/0x1e0
[10000.187207][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.187207][   T10] 
[10000.188742][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10000.188742][   T10]      neigh_parms_alloc+0x1e5/0x510
[10000.188742][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10000.188742][   T10]      ipv6_find_idev+0x102/0x170
[10000.188742][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10000.188742][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.188742][   T10]      netlink_rcv_skb+0x130/0x360
[10000.188742][   T10]      netlink_unicast+0x449/0x710
[10000.188742][   T10]      netlink_sendmsg+0x723/0xbe0
[10000.188742][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10000.188742][   T10]      ___sys_sendmsg+0xee/0x170
[10000.188742][   T10]      __sys_sendmsg+0xcd/0x170
[10000.188742][   T10]      do_syscall_64+0xc6/0x1e0
[10000.188742][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.188742][   T10] 
[10000.310875][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10000.311306][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10000.311306][T12167]      netdev_get_by_index+0x5e/0x80
[10000.311306][T12167]      fib6_nh_init+0x3d8/0x1580
[10000.311306][T12167]      ip6_route_info_create+0xf18/0x17d0
[10000.311306][T12167]      addrconf_f6i_alloc+0x315/0x560
[10000.311306][T12167]      ipv6_add_addr+0x411/0x2000
[10000.311306][T12167]      inet6_addr_add+0x30e/0xa40
[10000.311306][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10000.311306][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.311306][T12167]      netlink_rcv_skb+0x130/0x360
[10000.311306][T12167]      netlink_unicast+0x449/0x710
[10000.311306][T12167]      netlink_sendmsg+0x723/0xbe0
[10000.311306][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10000.311306][T12167]      ___sys_sendmsg+0xee/0x170
[10000.311306][T12167]      __sys_sendmsg+0xcd/0x170
[10000.311306][T12167]      do_syscall_64+0xc6/0x1e0
[10000.311306][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.311306][T12167] 
[10000.313584][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10000.313584][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10000.313584][T12167]      ipv6_find_idev+0x102/0x170
[10000.313584][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10000.313584][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.313584][T12167]      netlink_rcv_skb+0x130/0x360
[10000.313584][T12167]      netlink_unicast+0x449/0x710
[10000.313584][T12167]      netlink_sendmsg+0x723/0xbe0
[10000.313584][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10000.313584][T12167]      ___sys_sendmsg+0xee/0x170
[10000.313584][T12167]      __sys_sendmsg+0xcd/0x170
[10000.313584][T12167]      do_syscall_64+0xc6/0x1e0
[10000.313584][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.313584][T12167] 
[10000.315321][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10000.315321][T12167]      neigh_parms_alloc+0x1e5/0x510
[10000.315321][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10000.315321][T12167]      ipv6_find_idev+0x102/0x170
[10000.315321][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10000.315321][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10000.315321][T12167]      netlink_rcv_skb+0x130/0x360
[10000.315321][T12167]      netlink_unicast+0x449/0x710
[10000.315321][T12167]      netlink_sendmsg+0x723/0xbe0
[10000.315321][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10000.315321][T12167]      ___sys_sendmsg+0xee/0x170
[10000.315321][T12167]      __sys_sendmsg+0xcd/0x170
[10000.315321][T12167]      do_syscall_64+0xc6/0x1e0
[10000.315321][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10000.315321][T12167] 
[10010.430816][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10010.431283][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10010.431283][   T10]      dst_init+0x84/0x4a0
[10010.431283][   T10]      dst_alloc+0x97/0x150
[10010.431283][   T10]      ip6_dst_alloc+0x23/0x90
[10010.431283][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10010.431283][   T10]      ip6_pol_route+0x56f/0x840
[10010.431283][   T10]      fib6_rule_lookup+0x334/0x630
[10010.431283][   T10]      ip6_route_output_flags+0x259/0x480
[10010.431283][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10010.431283][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10010.431283][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10010.431283][   T10]      ____sys_sendmsg+0x772/0xa10
[10010.431283][   T10]      ___sys_sendmsg+0xee/0x170
[10010.431283][   T10]      __sys_sendmsg+0xcd/0x170
[10010.431283][   T10]      do_syscall_64+0xc6/0x1e0
[10010.431283][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.431283][   T10] 
[10010.433203][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.433203][   T10]      dst_init+0x84/0x4a0
[10010.433203][   T10]      dst_alloc+0x97/0x150
[10010.433203][   T10]      ip6_dst_alloc+0x23/0x90
[10010.433203][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10010.433203][   T10]      ip6_pol_route+0x56f/0x840
[10010.433203][   T10]      fib6_rule_lookup+0x334/0x630
[10010.433203][   T10]      ip6_route_output_flags+0x259/0x480
[10010.433203][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10010.433203][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10010.433203][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10010.433203][   T10]      ping_v6_sendmsg+0x763/0x1150
[10010.433203][   T10]      ____sys_sendmsg+0x772/0xa10
[10010.433203][   T10]      ___sys_sendmsg+0xee/0x170
[10010.433203][   T10]      __sys_sendmsg+0xcd/0x170
[10010.433203][   T10]      do_syscall_64+0xc6/0x1e0
[10010.433203][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.433203][   T10] 
[10010.435210][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.435210][   T10]      dst_init+0x84/0x4a0
[10010.435210][   T10]      dst_alloc+0x97/0x150
[10010.435210][   T10]      ip6_dst_alloc+0x23/0x90
[10010.435210][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10010.435210][   T10]      ip6_pol_route+0x56f/0x840
[10010.435210][   T10]      fib6_rule_lookup+0x334/0x630
[10010.435210][   T10]      ip6_route_output_flags+0x259/0x480
[10010.435210][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10010.435210][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10010.435210][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10010.435210][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10010.435210][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10010.435210][   T10]      ___sys_sendmsg+0xee/0x170
[10010.435210][   T10]      __sys_sendmsg+0xcd/0x170
[10010.435210][   T10]      do_syscall_64+0xc6/0x1e0
[10010.435210][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.435210][   T10] 
[10010.437224][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.437224][   T10]      netdev_get_by_index+0x5e/0x80
[10010.437224][   T10]      fib6_nh_init+0x3d8/0x1580
[10010.437224][   T10]      ip6_route_info_create+0xf18/0x17d0
[10010.437224][   T10]      ip6_route_add+0x1c/0x140
[10010.437224][   T10]      addrconf_prefix_route+0x2a6/0x430
[10010.437224][   T10]      inet6_addr_add+0x4f8/0xa40
[10010.437224][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10010.437224][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.437224][   T10]      netlink_rcv_skb+0x130/0x360
[10010.437224][   T10]      netlink_unicast+0x449/0x710
[10010.437224][   T10]      netlink_sendmsg+0x723/0xbe0
[10010.437224][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10010.437224][   T10]      ___sys_sendmsg+0xee/0x170
[10010.437224][   T10]      __sys_sendmsg+0xcd/0x170
[10010.437224][   T10]      do_syscall_64+0xc6/0x1e0
[10010.437224][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.437224][   T10] 
[10010.439232][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.439232][   T10]      netdev_get_by_index+0x5e/0x80
[10010.439232][   T10]      fib6_nh_init+0x3d8/0x1580
[10010.439232][   T10]      ip6_route_info_create+0xf18/0x17d0
[10010.439232][   T10]      addrconf_f6i_alloc+0x315/0x560
[10010.439232][   T10]      ipv6_add_addr+0x411/0x2000
[10010.439232][   T10]      inet6_addr_add+0x30e/0xa40
[10010.439232][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10010.439232][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.439232][   T10]      netlink_rcv_skb+0x130/0x360
[10010.439232][   T10]      netlink_unicast+0x449/0x710
[10010.439232][   T10]      netlink_sendmsg+0x723/0xbe0
[10010.439232][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10010.439232][   T10]      ___sys_sendmsg+0xee/0x170
[10010.439232][   T10]      __sys_sendmsg+0xcd/0x170
[10010.439232][   T10]      do_syscall_64+0xc6/0x1e0
[10010.439232][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.439232][   T10] 
[10010.441241][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.441241][   T10]      netdev_get_by_index+0x5e/0x80
[10010.441241][   T10]      fib6_nh_init+0x3d8/0x1580
[10010.441241][   T10]      ip6_route_info_create+0xf18/0x17d0
[10010.441241][   T10]      ip6_route_add+0x1c/0x140
[10010.441241][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10010.441241][   T10]      addrconf_add_dev+0xe2/0x170
[10010.441241][   T10]      inet6_addr_add+0x12f/0xa40
[10010.441241][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10010.441241][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.441241][   T10]      netlink_rcv_skb+0x130/0x360
[10010.441241][   T10]      netlink_unicast+0x449/0x710
[10010.441241][   T10]      netlink_sendmsg+0x723/0xbe0
[10010.441241][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10010.441241][   T10]      ___sys_sendmsg+0xee/0x170
[10010.441241][   T10]      __sys_sendmsg+0xcd/0x170
[10010.441241][   T10]      do_syscall_64+0xc6/0x1e0
[10010.441241][   T10] 
[10010.443202][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.443202][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10010.443202][   T10]      ipv6_find_idev+0x102/0x170
[10010.443202][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10010.443202][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.443202][   T10]      netlink_rcv_skb+0x130/0x360
[10010.443202][   T10]      netlink_unicast+0x449/0x710
[10010.443202][   T10]      netlink_sendmsg+0x723/0xbe0
[10010.443202][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10010.443202][   T10]      ___sys_sendmsg+0xee/0x170
[10010.443202][   T10]      __sys_sendmsg+0xcd/0x170
[10010.443202][   T10]      do_syscall_64+0xc6/0x1e0
[10010.443202][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.443202][   T10] 
[10010.444754][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10010.444754][   T10]      neigh_parms_alloc+0x1e5/0x510
[10010.444754][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10010.444754][   T10]      ipv6_find_idev+0x102/0x170
[10010.444754][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10010.444754][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.444754][   T10]      netlink_rcv_skb+0x130/0x360
[10010.444754][   T10]      netlink_unicast+0x449/0x710
[10010.444754][   T10]      netlink_sendmsg+0x723/0xbe0
[10010.444754][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10010.444754][   T10]      ___sys_sendmsg+0xee/0x170
[10010.444754][   T10]      __sys_sendmsg+0xcd/0x170
[10010.444754][   T10]      do_syscall_64+0xc6/0x1e0
[10010.444754][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.444754][   T10] 
[10010.566826][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10010.567256][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10010.567256][T12167]      netdev_get_by_index+0x5e/0x80
[10010.567256][T12167]      fib6_nh_init+0x3d8/0x1580
[10010.567256][T12167]      ip6_route_info_create+0xf18/0x17d0
[10010.567256][T12167]      addrconf_f6i_alloc+0x315/0x560
[10010.567256][T12167]      ipv6_add_addr+0x411/0x2000
[10010.567256][T12167]      inet6_addr_add+0x30e/0xa40
[10010.567256][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10010.567256][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.567256][T12167]      netlink_rcv_skb+0x130/0x360
[10010.567256][T12167]      netlink_unicast+0x449/0x710
[10010.567256][T12167]      netlink_sendmsg+0x723/0xbe0
[10010.567256][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10010.567256][T12167]      ___sys_sendmsg+0xee/0x170
[10010.567256][T12167]      __sys_sendmsg+0xcd/0x170
[10010.567256][T12167]      do_syscall_64+0xc6/0x1e0
[10010.567256][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.567256][T12167] 
[10010.569530][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10010.569530][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10010.569530][T12167]      ipv6_find_idev+0x102/0x170
[10010.569530][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10010.569530][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.569530][T12167]      netlink_rcv_skb+0x130/0x360
[10010.569530][T12167]      netlink_unicast+0x449/0x710
[10010.569530][T12167]      netlink_sendmsg+0x723/0xbe0
[10010.569530][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10010.569530][T12167]      ___sys_sendmsg+0xee/0x170
[10010.569530][T12167]      __sys_sendmsg+0xcd/0x170
[10010.569530][T12167]      do_syscall_64+0xc6/0x1e0
[10010.569530][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.569530][T12167] 
[10010.571253][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10010.571253][T12167]      neigh_parms_alloc+0x1e5/0x510
[10010.571253][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10010.571253][T12167]      ipv6_find_idev+0x102/0x170
[10010.571253][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10010.571253][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10010.571253][T12167]      netlink_rcv_skb+0x130/0x360
[10010.571253][T12167]      netlink_unicast+0x449/0x710
[10010.571253][T12167]      netlink_sendmsg+0x723/0xbe0
[10010.571253][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10010.571253][T12167]      ___sys_sendmsg+0xee/0x170
[10010.571253][T12167]      __sys_sendmsg+0xcd/0x170
[10010.571253][T12167]      do_syscall_64+0xc6/0x1e0
[10010.571253][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10010.571253][T12167] 
[10020.694838][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10020.695290][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10020.695290][   T10]      dst_init+0x84/0x4a0
[10020.695290][   T10]      dst_alloc+0x97/0x150
[10020.695290][   T10]      ip6_dst_alloc+0x23/0x90
[10020.695290][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10020.695290][   T10]      ip6_pol_route+0x56f/0x840
[10020.695290][   T10]      fib6_rule_lookup+0x334/0x630
[10020.695290][   T10]      ip6_route_output_flags+0x259/0x480
[10020.695290][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10020.695290][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10020.695290][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10020.695290][   T10]      ____sys_sendmsg+0x772/0xa10
[10020.695290][   T10]      ___sys_sendmsg+0xee/0x170
[10020.695290][   T10]      __sys_sendmsg+0xcd/0x170
[10020.695290][   T10]      do_syscall_64+0xc6/0x1e0
[10020.695290][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.695290][   T10] 
[10020.697201][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.697201][   T10]      dst_init+0x84/0x4a0
[10020.697201][   T10]      dst_alloc+0x97/0x150
[10020.697201][   T10]      ip6_dst_alloc+0x23/0x90
[10020.697201][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10020.697201][   T10]      ip6_pol_route+0x56f/0x840
[10020.697201][   T10]      fib6_rule_lookup+0x334/0x630
[10020.697201][   T10]      ip6_route_output_flags+0x259/0x480
[10020.697201][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10020.697201][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10020.697201][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10020.697201][   T10]      ping_v6_sendmsg+0x763/0x1150
[10020.697201][   T10]      ____sys_sendmsg+0x772/0xa10
[10020.697201][   T10]      ___sys_sendmsg+0xee/0x170
[10020.697201][   T10]      __sys_sendmsg+0xcd/0x170
[10020.697201][   T10]      do_syscall_64+0xc6/0x1e0
[10020.697201][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.697201][   T10] 
[10020.699211][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.699211][   T10]      dst_init+0x84/0x4a0
[10020.699211][   T10]      dst_alloc+0x97/0x150
[10020.699211][   T10]      ip6_dst_alloc+0x23/0x90
[10020.699211][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10020.699211][   T10]      ip6_pol_route+0x56f/0x840
[10020.699211][   T10]      fib6_rule_lookup+0x334/0x630
[10020.699211][   T10]      ip6_route_output_flags+0x259/0x480
[10020.699211][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10020.699211][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10020.699211][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10020.699211][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10020.699211][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10020.699211][   T10]      ___sys_sendmsg+0xee/0x170
[10020.699211][   T10]      __sys_sendmsg+0xcd/0x170
[10020.699211][   T10]      do_syscall_64+0xc6/0x1e0
[10020.699211][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.699211][   T10] 
[10020.701258][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.701258][   T10]      netdev_get_by_index+0x5e/0x80
[10020.701258][   T10]      fib6_nh_init+0x3d8/0x1580
[10020.701258][   T10]      ip6_route_info_create+0xf18/0x17d0
[10020.701258][   T10]      ip6_route_add+0x1c/0x140
[10020.701258][   T10]      addrconf_prefix_route+0x2a6/0x430
[10020.701258][   T10]      inet6_addr_add+0x4f8/0xa40
[10020.701258][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10020.701258][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.701258][   T10]      netlink_rcv_skb+0x130/0x360
[10020.701258][   T10]      netlink_unicast+0x449/0x710
[10020.701258][   T10]      netlink_sendmsg+0x723/0xbe0
[10020.701258][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10020.701258][   T10]      ___sys_sendmsg+0xee/0x170
[10020.701258][   T10]      __sys_sendmsg+0xcd/0x170
[10020.701258][   T10]      do_syscall_64+0xc6/0x1e0
[10020.701258][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.701258][   T10] 
[10020.703268][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.703268][   T10]      netdev_get_by_index+0x5e/0x80
[10020.703268][   T10]      fib6_nh_init+0x3d8/0x1580
[10020.703268][   T10]      ip6_route_info_create+0xf18/0x17d0
[10020.703268][   T10]      addrconf_f6i_alloc+0x315/0x560
[10020.703268][   T10]      ipv6_add_addr+0x411/0x2000
[10020.703268][   T10]      inet6_addr_add+0x30e/0xa40
[10020.703268][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10020.703268][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.703268][   T10]      netlink_rcv_skb+0x130/0x360
[10020.703268][   T10]      netlink_unicast+0x449/0x710
[10020.703268][   T10]      netlink_sendmsg+0x723/0xbe0
[10020.703268][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10020.703268][   T10]      ___sys_sendmsg+0xee/0x170
[10020.703268][   T10]      __sys_sendmsg+0xcd/0x170
[10020.703268][   T10]      do_syscall_64+0xc6/0x1e0
[10020.703268][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.703268][   T10] 
[10020.705281][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.705281][   T10]      netdev_get_by_index+0x5e/0x80
[10020.705281][   T10]      fib6_nh_init+0x3d8/0x1580
[10020.705281][   T10]      ip6_route_info_create+0xf18/0x17d0
[10020.705281][   T10]      ip6_route_add+0x1c/0x140
[10020.705281][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10020.705281][   T10]      addrconf_add_dev+0xe2/0x170
[10020.705281][   T10]      inet6_addr_add+0x12f/0xa40
[10020.705281][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10020.705281][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.705281][   T10]      netlink_rcv_skb+0x130/0x360
[10020.705281][   T10]      netlink_unicast+0x449/0x710
[10020.705281][   T10]      netlink_sendmsg+0x723/0xbe0
[10020.705281][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10020.705281][   T10]      ___sys_sendmsg+0xee/0x170
[10020.705281][   T10]      __sys_sendmsg+0xcd/0x170
[10020.705281][   T10]      do_syscall_64+0xc6/0x1e0
[10020.705281][   T10] 
[10020.707260][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.707260][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10020.707260][   T10]      ipv6_find_idev+0x102/0x170
[10020.707260][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10020.707260][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.707260][   T10]      netlink_rcv_skb+0x130/0x360
[10020.707260][   T10]      netlink_unicast+0x449/0x710
[10020.707260][   T10]      netlink_sendmsg+0x723/0xbe0
[10020.707260][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10020.707260][   T10]      ___sys_sendmsg+0xee/0x170
[10020.707260][   T10]      __sys_sendmsg+0xcd/0x170
[10020.707260][   T10]      do_syscall_64+0xc6/0x1e0
[10020.707260][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.707260][   T10] 
[10020.708815][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10020.708815][   T10]      neigh_parms_alloc+0x1e5/0x510
[10020.708815][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10020.708815][   T10]      ipv6_find_idev+0x102/0x170
[10020.708815][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10020.708815][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.708815][   T10]      netlink_rcv_skb+0x130/0x360
[10020.708815][   T10]      netlink_unicast+0x449/0x710
[10020.708815][   T10]      netlink_sendmsg+0x723/0xbe0
[10020.708815][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10020.708815][   T10]      ___sys_sendmsg+0xee/0x170
[10020.708815][   T10]      __sys_sendmsg+0xcd/0x170
[10020.708815][   T10]      do_syscall_64+0xc6/0x1e0
[10020.708815][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.708815][   T10] 
[10020.822817][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10020.823194][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10020.823194][T12167]      netdev_get_by_index+0x5e/0x80
[10020.823194][T12167]      fib6_nh_init+0x3d8/0x1580
[10020.823194][T12167]      ip6_route_info_create+0xf18/0x17d0
[10020.823194][T12167]      addrconf_f6i_alloc+0x315/0x560
[10020.823194][T12167]      ipv6_add_addr+0x411/0x2000
[10020.823194][T12167]      inet6_addr_add+0x30e/0xa40
[10020.823194][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10020.823194][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.823194][T12167]      netlink_rcv_skb+0x130/0x360
[10020.823194][T12167]      netlink_unicast+0x449/0x710
[10020.823194][T12167]      netlink_sendmsg+0x723/0xbe0
[10020.823194][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10020.823194][T12167]      ___sys_sendmsg+0xee/0x170
[10020.823194][T12167]      __sys_sendmsg+0xcd/0x170
[10020.823194][T12167]      do_syscall_64+0xc6/0x1e0
[10020.823194][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.823194][T12167] 
[10020.825473][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10020.825473][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10020.825473][T12167]      ipv6_find_idev+0x102/0x170
[10020.825473][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10020.825473][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.825473][T12167]      netlink_rcv_skb+0x130/0x360
[10020.825473][T12167]      netlink_unicast+0x449/0x710
[10020.825473][T12167]      netlink_sendmsg+0x723/0xbe0
[10020.825473][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10020.825473][T12167]      ___sys_sendmsg+0xee/0x170
[10020.825473][T12167]      __sys_sendmsg+0xcd/0x170
[10020.825473][T12167]      do_syscall_64+0xc6/0x1e0
[10020.825473][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.825473][T12167] 
[10020.827210][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10020.827210][T12167]      neigh_parms_alloc+0x1e5/0x510
[10020.827210][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10020.827210][T12167]      ipv6_find_idev+0x102/0x170
[10020.827210][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10020.827210][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10020.827210][T12167]      netlink_rcv_skb+0x130/0x360
[10020.827210][T12167]      netlink_unicast+0x449/0x710
[10020.827210][T12167]      netlink_sendmsg+0x723/0xbe0
[10020.827210][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10020.827210][T12167]      ___sys_sendmsg+0xee/0x170
[10020.827210][T12167]      __sys_sendmsg+0xcd/0x170
[10020.827210][T12167]      do_syscall_64+0xc6/0x1e0
[10020.827210][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10020.827210][T12167] 
[10030.710847][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10030.711256][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10030.711256][   T10]      dst_init+0x84/0x4a0
[10030.711256][   T10]      dst_alloc+0x97/0x150
[10030.711256][   T10]      ip6_dst_alloc+0x23/0x90
[10030.711256][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10030.711256][   T10]      ip6_pol_route+0x56f/0x840
[10030.711256][   T10]      fib6_rule_lookup+0x334/0x630
[10030.711256][   T10]      ip6_route_output_flags+0x259/0x480
[10030.711256][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10030.711256][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10030.711256][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10030.711256][   T10]      ____sys_sendmsg+0x772/0xa10
[10030.711256][   T10]      ___sys_sendmsg+0xee/0x170
[10030.711256][   T10]      __sys_sendmsg+0xcd/0x170
[10030.711256][   T10]      do_syscall_64+0xc6/0x1e0
[10030.711256][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.711256][   T10] 
[10030.713177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.713177][   T10]      dst_init+0x84/0x4a0
[10030.713177][   T10]      dst_alloc+0x97/0x150
[10030.713177][   T10]      ip6_dst_alloc+0x23/0x90
[10030.713177][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10030.713177][   T10]      ip6_pol_route+0x56f/0x840
[10030.713177][   T10]      fib6_rule_lookup+0x334/0x630
[10030.713177][   T10]      ip6_route_output_flags+0x259/0x480
[10030.713177][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10030.713177][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10030.713177][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10030.713177][   T10]      ping_v6_sendmsg+0x763/0x1150
[10030.713177][   T10]      ____sys_sendmsg+0x772/0xa10
[10030.713177][   T10]      ___sys_sendmsg+0xee/0x170
[10030.713177][   T10]      __sys_sendmsg+0xcd/0x170
[10030.713177][   T10]      do_syscall_64+0xc6/0x1e0
[10030.713177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.713177][   T10] 
[10030.715220][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.715220][   T10]      dst_init+0x84/0x4a0
[10030.715220][   T10]      dst_alloc+0x97/0x150
[10030.715220][   T10]      ip6_dst_alloc+0x23/0x90
[10030.715220][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10030.715220][   T10]      ip6_pol_route+0x56f/0x840
[10030.715220][   T10]      fib6_rule_lookup+0x334/0x630
[10030.715220][   T10]      ip6_route_output_flags+0x259/0x480
[10030.715220][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10030.715220][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10030.715220][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10030.715220][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10030.715220][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10030.715220][   T10]      ___sys_sendmsg+0xee/0x170
[10030.715220][   T10]      __sys_sendmsg+0xcd/0x170
[10030.715220][   T10]      do_syscall_64+0xc6/0x1e0
[10030.715220][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.715220][   T10] 
[10030.717249][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.717249][   T10]      netdev_get_by_index+0x5e/0x80
[10030.717249][   T10]      fib6_nh_init+0x3d8/0x1580
[10030.717249][   T10]      ip6_route_info_create+0xf18/0x17d0
[10030.717249][   T10]      ip6_route_add+0x1c/0x140
[10030.717249][   T10]      addrconf_prefix_route+0x2a6/0x430
[10030.717249][   T10]      inet6_addr_add+0x4f8/0xa40
[10030.717249][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10030.717249][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10030.717249][   T10]      netlink_rcv_skb+0x130/0x360
[10030.717249][   T10]      netlink_unicast+0x449/0x710
[10030.717249][   T10]      netlink_sendmsg+0x723/0xbe0
[10030.717249][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10030.717249][   T10]      ___sys_sendmsg+0xee/0x170
[10030.717249][   T10]      __sys_sendmsg+0xcd/0x170
[10030.717249][   T10]      do_syscall_64+0xc6/0x1e0
[10030.717249][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.717249][   T10] 
[10030.719271][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.719271][   T10]      netdev_get_by_index+0x5e/0x80
[10030.719271][   T10]      fib6_nh_init+0x3d8/0x1580
[10030.719271][   T10]      ip6_route_info_create+0xf18/0x17d0
[10030.719271][   T10]      addrconf_f6i_alloc+0x315/0x560
[10030.719271][   T10]      ipv6_add_addr+0x411/0x2000
[10030.719271][   T10]      inet6_addr_add+0x30e/0xa40
[10030.719271][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10030.719271][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10030.719271][   T10]      netlink_rcv_skb+0x130/0x360
[10030.719271][   T10]      netlink_unicast+0x449/0x710
[10030.719271][   T10]      netlink_sendmsg+0x723/0xbe0
[10030.719271][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10030.719271][   T10]      ___sys_sendmsg+0xee/0x170
[10030.719271][   T10]      __sys_sendmsg+0xcd/0x170
[10030.719271][   T10]      do_syscall_64+0xc6/0x1e0
[10030.719271][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.719271][   T10] 
[10030.721289][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.721289][   T10]      netdev_get_by_index+0x5e/0x80
[10030.721289][   T10]      fib6_nh_init+0x3d8/0x1580
[10030.721289][   T10]      ip6_route_info_create+0xf18/0x17d0
[10030.721289][   T10]      ip6_route_add+0x1c/0x140
[10030.721289][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10030.721289][   T10]      addrconf_add_dev+0xe2/0x170
[10030.721289][   T10]      inet6_addr_add+0x12f/0xa40
[10030.721289][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10030.721289][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10030.721289][   T10]      netlink_rcv_skb+0x130/0x360
[10030.721289][   T10]      netlink_unicast+0x449/0x710
[10030.721289][   T10]      netlink_sendmsg+0x723/0xbe0
[10030.721289][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10030.721289][   T10]      ___sys_sendmsg+0xee/0x170
[10030.721289][   T10]      __sys_sendmsg+0xcd/0x170
[10030.721289][   T10]      do_syscall_64+0xc6/0x1e0
[10030.721289][   T10] 
[10030.723268][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.723268][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10030.723268][   T10]      ipv6_find_idev+0x102/0x170
[10030.723268][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10030.723268][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10030.723268][   T10]      netlink_rcv_skb+0x130/0x360
[10030.723268][   T10]      netlink_unicast+0x449/0x710
[10030.723268][   T10]      netlink_sendmsg+0x723/0xbe0
[10030.723268][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10030.723268][   T10]      ___sys_sendmsg+0xee/0x170
[10030.723268][   T10]      __sys_sendmsg+0xcd/0x170
[10030.723268][   T10]      do_syscall_64+0xc6/0x1e0
[10030.723268][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.723268][   T10] 
[10030.724818][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10030.724818][   T10]      neigh_parms_alloc+0x1e5/0x510
[10030.724818][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10030.724818][   T10]      ipv6_find_idev+0x102/0x170
[10030.724818][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10030.724818][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10030.724818][   T10]      netlink_rcv_skb+0x130/0x360
[10030.724818][   T10]      netlink_unicast+0x449/0x710
[10030.724818][   T10]      netlink_sendmsg+0x723/0xbe0
[10030.724818][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10030.724818][   T10]      ___sys_sendmsg+0xee/0x170
[10030.724818][   T10]      __sys_sendmsg+0xcd/0x170
[10030.724818][   T10]      do_syscall_64+0xc6/0x1e0
[10030.724818][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10030.724818][   T10] 
[10031.070822][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10031.071201][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10031.071201][T12167]      netdev_get_by_index+0x5e/0x80
[10031.071201][T12167]      fib6_nh_init+0x3d8/0x1580
[10031.071201][T12167]      ip6_route_info_create+0xf18/0x17d0
[10031.071201][T12167]      addrconf_f6i_alloc+0x315/0x560
[10031.071201][T12167]      ipv6_add_addr+0x411/0x2000
[10031.071201][T12167]      inet6_addr_add+0x30e/0xa40
[10031.071201][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10031.071201][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10031.071201][T12167]      netlink_rcv_skb+0x130/0x360
[10031.071201][T12167]      netlink_unicast+0x449/0x710
[10031.071201][T12167]      netlink_sendmsg+0x723/0xbe0
[10031.071201][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10031.071201][T12167]      ___sys_sendmsg+0xee/0x170
[10031.071201][T12167]      __sys_sendmsg+0xcd/0x170
[10031.071201][T12167]      do_syscall_64+0xc6/0x1e0
[10031.071201][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10031.071201][T12167] 
[10031.073506][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10031.073506][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10031.073506][T12167]      ipv6_find_idev+0x102/0x170
[10031.073506][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10031.073506][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10031.073506][T12167]      netlink_rcv_skb+0x130/0x360
[10031.073506][T12167]      netlink_unicast+0x449/0x710
[10031.073506][T12167]      netlink_sendmsg+0x723/0xbe0
[10031.073506][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10031.073506][T12167]      ___sys_sendmsg+0xee/0x170
[10031.073506][T12167]      __sys_sendmsg+0xcd/0x170
[10031.073506][T12167]      do_syscall_64+0xc6/0x1e0
[10031.073506][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10031.073506][T12167] 
[10031.075257][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10031.075257][T12167]      neigh_parms_alloc+0x1e5/0x510
[10031.075257][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10031.075257][T12167]      ipv6_find_idev+0x102/0x170
[10031.075257][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10031.075257][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10031.075257][T12167]      netlink_rcv_skb+0x130/0x360
[10031.075257][T12167]      netlink_unicast+0x449/0x710
[10031.075257][T12167]      netlink_sendmsg+0x723/0xbe0
[10031.075257][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10031.075257][T12167]      ___sys_sendmsg+0xee/0x170
[10031.075257][T12167]      __sys_sendmsg+0xcd/0x170
[10031.075257][T12167]      do_syscall_64+0xc6/0x1e0
[10031.075257][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10031.075257][T12167] 
[10040.734870][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10040.735308][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10040.735308][   T10]      dst_init+0x84/0x4a0
[10040.735308][   T10]      dst_alloc+0x97/0x150
[10040.735308][   T10]      ip6_dst_alloc+0x23/0x90
[10040.735308][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10040.735308][   T10]      ip6_pol_route+0x56f/0x840
[10040.735308][   T10]      fib6_rule_lookup+0x334/0x630
[10040.735308][   T10]      ip6_route_output_flags+0x259/0x480
[10040.735308][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10040.735308][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10040.735308][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10040.735308][   T10]      ____sys_sendmsg+0x772/0xa10
[10040.735308][   T10]      ___sys_sendmsg+0xee/0x170
[10040.735308][   T10]      __sys_sendmsg+0xcd/0x170
[10040.735308][   T10]      do_syscall_64+0xc6/0x1e0
[10040.735308][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.735308][   T10] 
[10040.737219][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.737219][   T10]      dst_init+0x84/0x4a0
[10040.737219][   T10]      dst_alloc+0x97/0x150
[10040.737219][   T10]      ip6_dst_alloc+0x23/0x90
[10040.737219][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10040.737219][   T10]      ip6_pol_route+0x56f/0x840
[10040.737219][   T10]      fib6_rule_lookup+0x334/0x630
[10040.737219][   T10]      ip6_route_output_flags+0x259/0x480
[10040.737219][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10040.737219][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10040.737219][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10040.737219][   T10]      ping_v6_sendmsg+0x763/0x1150
[10040.737219][   T10]      ____sys_sendmsg+0x772/0xa10
[10040.737219][   T10]      ___sys_sendmsg+0xee/0x170
[10040.737219][   T10]      __sys_sendmsg+0xcd/0x170
[10040.737219][   T10]      do_syscall_64+0xc6/0x1e0
[10040.737219][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.737219][   T10] 
[10040.739229][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.739229][   T10]      dst_init+0x84/0x4a0
[10040.739229][   T10]      dst_alloc+0x97/0x150
[10040.739229][   T10]      ip6_dst_alloc+0x23/0x90
[10040.739229][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10040.739229][   T10]      ip6_pol_route+0x56f/0x840
[10040.739229][   T10]      fib6_rule_lookup+0x334/0x630
[10040.739229][   T10]      ip6_route_output_flags+0x259/0x480
[10040.739229][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10040.739229][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10040.739229][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10040.739229][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10040.739229][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10040.739229][   T10]      ___sys_sendmsg+0xee/0x170
[10040.739229][   T10]      __sys_sendmsg+0xcd/0x170
[10040.739229][   T10]      do_syscall_64+0xc6/0x1e0
[10040.739229][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.739229][   T10] 
[10040.741375][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.741375][   T10]      netdev_get_by_index+0x5e/0x80
[10040.741375][   T10]      fib6_nh_init+0x3d8/0x1580
[10040.741375][   T10]      ip6_route_info_create+0xf18/0x17d0
[10040.741375][   T10]      ip6_route_add+0x1c/0x140
[10040.741375][   T10]      addrconf_prefix_route+0x2a6/0x430
[10040.741375][   T10]      inet6_addr_add+0x4f8/0xa40
[10040.741375][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10040.741375][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10040.741375][   T10]      netlink_rcv_skb+0x130/0x360
[10040.741375][   T10]      netlink_unicast+0x449/0x710
[10040.741375][   T10]      netlink_sendmsg+0x723/0xbe0
[10040.741375][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10040.741375][   T10]      ___sys_sendmsg+0xee/0x170
[10040.741375][   T10]      __sys_sendmsg+0xcd/0x170
[10040.741375][   T10]      do_syscall_64+0xc6/0x1e0
[10040.741375][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.741375][   T10] 
[10040.743405][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.743405][   T10]      netdev_get_by_index+0x5e/0x80
[10040.743405][   T10]      fib6_nh_init+0x3d8/0x1580
[10040.743405][   T10]      ip6_route_info_create+0xf18/0x17d0
[10040.743405][   T10]      addrconf_f6i_alloc+0x315/0x560
[10040.743405][   T10]      ipv6_add_addr+0x411/0x2000
[10040.743405][   T10]      inet6_addr_add+0x30e/0xa40
[10040.743405][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10040.743405][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10040.743405][   T10]      netlink_rcv_skb+0x130/0x360
[10040.743405][   T10]      netlink_unicast+0x449/0x710
[10040.743405][   T10]      netlink_sendmsg+0x723/0xbe0
[10040.743405][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10040.743405][   T10]      ___sys_sendmsg+0xee/0x170
[10040.743405][   T10]      __sys_sendmsg+0xcd/0x170
[10040.743405][   T10]      do_syscall_64+0xc6/0x1e0
[10040.743405][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.743405][   T10] 
[10040.745397][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.745397][   T10]      netdev_get_by_index+0x5e/0x80
[10040.745397][   T10]      fib6_nh_init+0x3d8/0x1580
[10040.745397][   T10]      ip6_route_info_create+0xf18/0x17d0
[10040.745397][   T10]      ip6_route_add+0x1c/0x140
[10040.745397][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10040.745397][   T10]      addrconf_add_dev+0xe2/0x170
[10040.745397][   T10]      inet6_addr_add+0x12f/0xa40
[10040.745397][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10040.745397][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10040.745397][   T10]      netlink_rcv_skb+0x130/0x360
[10040.745397][   T10]      netlink_unicast+0x449/0x710
[10040.745397][   T10]      netlink_sendmsg+0x723/0xbe0
[10040.745397][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10040.745397][   T10]      ___sys_sendmsg+0xee/0x170
[10040.745397][   T10]      __sys_sendmsg+0xcd/0x170
[10040.745397][   T10]      do_syscall_64+0xc6/0x1e0
[10040.745397][   T10] 
[10040.747381][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.747381][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10040.747381][   T10]      ipv6_find_idev+0x102/0x170
[10040.747381][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10040.747381][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10040.747381][   T10]      netlink_rcv_skb+0x130/0x360
[10040.747381][   T10]      netlink_unicast+0x449/0x710
[10040.747381][   T10]      netlink_sendmsg+0x723/0xbe0
[10040.747381][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10040.747381][   T10]      ___sys_sendmsg+0xee/0x170
[10040.747381][   T10]      __sys_sendmsg+0xcd/0x170
[10040.747381][   T10]      do_syscall_64+0xc6/0x1e0
[10040.747381][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.747381][   T10] 
[10040.748928][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10040.748928][   T10]      neigh_parms_alloc+0x1e5/0x510
[10040.748928][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10040.748928][   T10]      ipv6_find_idev+0x102/0x170
[10040.748928][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10040.748928][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10040.748928][   T10]      netlink_rcv_skb+0x130/0x360
[10040.748928][   T10]      netlink_unicast+0x449/0x710
[10040.748928][   T10]      netlink_sendmsg+0x723/0xbe0
[10040.748928][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10040.748928][   T10]      ___sys_sendmsg+0xee/0x170
[10040.748928][   T10]      __sys_sendmsg+0xcd/0x170
[10040.748928][   T10]      do_syscall_64+0xc6/0x1e0
[10040.748928][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10040.748928][   T10] 
[10041.318888][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10041.319267][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10041.319267][T12167]      netdev_get_by_index+0x5e/0x80
[10041.319267][T12167]      fib6_nh_init+0x3d8/0x1580
[10041.319267][T12167]      ip6_route_info_create+0xf18/0x17d0
[10041.319267][T12167]      addrconf_f6i_alloc+0x315/0x560
[10041.319267][T12167]      ipv6_add_addr+0x411/0x2000
[10041.319267][T12167]      inet6_addr_add+0x30e/0xa40
[10041.319267][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10041.319267][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10041.319267][T12167]      netlink_rcv_skb+0x130/0x360
[10041.319267][T12167]      netlink_unicast+0x449/0x710
[10041.319267][T12167]      netlink_sendmsg+0x723/0xbe0
[10041.319267][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10041.319267][T12167]      ___sys_sendmsg+0xee/0x170
[10041.319267][T12167]      __sys_sendmsg+0xcd/0x170
[10041.319267][T12167]      do_syscall_64+0xc6/0x1e0
[10041.319267][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10041.319267][T12167] 
[10041.321544][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10041.321544][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10041.321544][T12167]      ipv6_find_idev+0x102/0x170
[10041.321544][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10041.321544][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10041.321544][T12167]      netlink_rcv_skb+0x130/0x360
[10041.321544][T12167]      netlink_unicast+0x449/0x710
[10041.321544][T12167]      netlink_sendmsg+0x723/0xbe0
[10041.321544][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10041.321544][T12167]      ___sys_sendmsg+0xee/0x170
[10041.321544][T12167]      __sys_sendmsg+0xcd/0x170
[10041.321544][T12167]      do_syscall_64+0xc6/0x1e0
[10041.321544][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10041.321544][T12167] 
[10041.323311][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10041.323311][T12167]      neigh_parms_alloc+0x1e5/0x510
[10041.323311][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10041.323311][T12167]      ipv6_find_idev+0x102/0x170
[10041.323311][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10041.323311][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10041.323311][T12167]      netlink_rcv_skb+0x130/0x360
[10041.323311][T12167]      netlink_unicast+0x449/0x710
[10041.323311][T12167]      netlink_sendmsg+0x723/0xbe0
[10041.323311][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10041.323311][T12167]      ___sys_sendmsg+0xee/0x170
[10041.323311][T12167]      __sys_sendmsg+0xcd/0x170
[10041.323311][T12167]      do_syscall_64+0xc6/0x1e0
[10041.323311][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10041.323311][T12167] 
[10050.998747][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10050.999193][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10050.999193][   T10]      dst_init+0x84/0x4a0
[10050.999193][   T10]      dst_alloc+0x97/0x150
[10050.999193][   T10]      ip6_dst_alloc+0x23/0x90
[10050.999193][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10050.999193][   T10]      ip6_pol_route+0x56f/0x840
[10050.999193][   T10]      fib6_rule_lookup+0x334/0x630
[10050.999193][   T10]      ip6_route_output_flags+0x259/0x480
[10050.999193][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10050.999193][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10050.999193][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10050.999193][   T10]      ____sys_sendmsg+0x772/0xa10
[10050.999193][   T10]      ___sys_sendmsg+0xee/0x170
[10050.999193][   T10]      __sys_sendmsg+0xcd/0x170
[10050.999193][   T10]      do_syscall_64+0xc6/0x1e0
[10050.999193][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10050.999193][   T10] 
[10051.001116][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.001116][   T10]      dst_init+0x84/0x4a0
[10051.001116][   T10]      dst_alloc+0x97/0x150
[10051.001116][   T10]      ip6_dst_alloc+0x23/0x90
[10051.001116][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10051.001116][   T10]      ip6_pol_route+0x56f/0x840
[10051.001116][   T10]      fib6_rule_lookup+0x334/0x630
[10051.001116][   T10]      ip6_route_output_flags+0x259/0x480
[10051.001116][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10051.001116][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10051.001116][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10051.001116][   T10]      ping_v6_sendmsg+0x763/0x1150
[10051.001116][   T10]      ____sys_sendmsg+0x772/0xa10
[10051.001116][   T10]      ___sys_sendmsg+0xee/0x170
[10051.001116][   T10]      __sys_sendmsg+0xcd/0x170
[10051.001116][   T10]      do_syscall_64+0xc6/0x1e0
[10051.001116][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.001116][   T10] 
[10051.003141][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.003141][   T10]      dst_init+0x84/0x4a0
[10051.003141][   T10]      dst_alloc+0x97/0x150
[10051.003141][   T10]      ip6_dst_alloc+0x23/0x90
[10051.003141][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10051.003141][   T10]      ip6_pol_route+0x56f/0x840
[10051.003141][   T10]      fib6_rule_lookup+0x334/0x630
[10051.003141][   T10]      ip6_route_output_flags+0x259/0x480
[10051.003141][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10051.003141][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10051.003141][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10051.003141][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10051.003141][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10051.003141][   T10]      ___sys_sendmsg+0xee/0x170
[10051.003141][   T10]      __sys_sendmsg+0xcd/0x170
[10051.003141][   T10]      do_syscall_64+0xc6/0x1e0
[10051.003141][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.003141][   T10] 
[10051.005175][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.005175][   T10]      netdev_get_by_index+0x5e/0x80
[10051.005175][   T10]      fib6_nh_init+0x3d8/0x1580
[10051.005175][   T10]      ip6_route_info_create+0xf18/0x17d0
[10051.005175][   T10]      ip6_route_add+0x1c/0x140
[10051.005175][   T10]      addrconf_prefix_route+0x2a6/0x430
[10051.005175][   T10]      inet6_addr_add+0x4f8/0xa40
[10051.005175][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10051.005175][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.005175][   T10]      netlink_rcv_skb+0x130/0x360
[10051.005175][   T10]      netlink_unicast+0x449/0x710
[10051.005175][   T10]      netlink_sendmsg+0x723/0xbe0
[10051.005175][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10051.005175][   T10]      ___sys_sendmsg+0xee/0x170
[10051.005175][   T10]      __sys_sendmsg+0xcd/0x170
[10051.005175][   T10]      do_syscall_64+0xc6/0x1e0
[10051.005175][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.005175][   T10] 
[10051.007205][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.007205][   T10]      netdev_get_by_index+0x5e/0x80
[10051.007205][   T10]      fib6_nh_init+0x3d8/0x1580
[10051.007205][   T10]      ip6_route_info_create+0xf18/0x17d0
[10051.007205][   T10]      addrconf_f6i_alloc+0x315/0x560
[10051.007205][   T10]      ipv6_add_addr+0x411/0x2000
[10051.007205][   T10]      inet6_addr_add+0x30e/0xa40
[10051.007205][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10051.007205][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.007205][   T10]      netlink_rcv_skb+0x130/0x360
[10051.007205][   T10]      netlink_unicast+0x449/0x710
[10051.007205][   T10]      netlink_sendmsg+0x723/0xbe0
[10051.007205][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10051.007205][   T10]      ___sys_sendmsg+0xee/0x170
[10051.007205][   T10]      __sys_sendmsg+0xcd/0x170
[10051.007205][   T10]      do_syscall_64+0xc6/0x1e0
[10051.007205][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.007205][   T10] 
[10051.009239][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.009239][   T10]      netdev_get_by_index+0x5e/0x80
[10051.009239][   T10]      fib6_nh_init+0x3d8/0x1580
[10051.009239][   T10]      ip6_route_info_create+0xf18/0x17d0
[10051.009239][   T10]      ip6_route_add+0x1c/0x140
[10051.009239][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10051.009239][   T10]      addrconf_add_dev+0xe2/0x170
[10051.009239][   T10]      inet6_addr_add+0x12f/0xa40
[10051.009239][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10051.009239][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.009239][   T10]      netlink_rcv_skb+0x130/0x360
[10051.009239][   T10]      netlink_unicast+0x449/0x710
[10051.009239][   T10]      netlink_sendmsg+0x723/0xbe0
[10051.009239][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10051.009239][   T10]      ___sys_sendmsg+0xee/0x170
[10051.009239][   T10]      __sys_sendmsg+0xcd/0x170
[10051.009239][   T10]      do_syscall_64+0xc6/0x1e0
[10051.009239][   T10] 
[10051.011226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.011226][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10051.011226][   T10]      ipv6_find_idev+0x102/0x170
[10051.011226][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10051.011226][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.011226][   T10]      netlink_rcv_skb+0x130/0x360
[10051.011226][   T10]      netlink_unicast+0x449/0x710
[10051.011226][   T10]      netlink_sendmsg+0x723/0xbe0
[10051.011226][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10051.011226][   T10]      ___sys_sendmsg+0xee/0x170
[10051.011226][   T10]      __sys_sendmsg+0xcd/0x170
[10051.011226][   T10]      do_syscall_64+0xc6/0x1e0
[10051.011226][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.011226][   T10] 
[10051.012787][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10051.012787][   T10]      neigh_parms_alloc+0x1e5/0x510
[10051.012787][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10051.012787][   T10]      ipv6_find_idev+0x102/0x170
[10051.012787][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10051.012787][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.012787][   T10]      netlink_rcv_skb+0x130/0x360
[10051.012787][   T10]      netlink_unicast+0x449/0x710
[10051.012787][   T10]      netlink_sendmsg+0x723/0xbe0
[10051.012787][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10051.012787][   T10]      ___sys_sendmsg+0xee/0x170
[10051.012787][   T10]      __sys_sendmsg+0xcd/0x170
[10051.012787][   T10]      do_syscall_64+0xc6/0x1e0
[10051.012787][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.012787][   T10] 
[10051.566878][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10051.567283][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10051.567283][T12167]      netdev_get_by_index+0x5e/0x80
[10051.567283][T12167]      fib6_nh_init+0x3d8/0x1580
[10051.567283][T12167]      ip6_route_info_create+0xf18/0x17d0
[10051.567283][T12167]      addrconf_f6i_alloc+0x315/0x560
[10051.567283][T12167]      ipv6_add_addr+0x411/0x2000
[10051.567283][T12167]      inet6_addr_add+0x30e/0xa40
[10051.567283][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10051.567283][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.567283][T12167]      netlink_rcv_skb+0x130/0x360
[10051.567283][T12167]      netlink_unicast+0x449/0x710
[10051.567283][T12167]      netlink_sendmsg+0x723/0xbe0
[10051.567283][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10051.567283][T12167]      ___sys_sendmsg+0xee/0x170
[10051.567283][T12167]      __sys_sendmsg+0xcd/0x170
[10051.567283][T12167]      do_syscall_64+0xc6/0x1e0
[10051.567283][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.567283][T12167] 
[10051.569566][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10051.569566][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10051.569566][T12167]      ipv6_find_idev+0x102/0x170
[10051.569566][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10051.569566][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.569566][T12167]      netlink_rcv_skb+0x130/0x360
[10051.569566][T12167]      netlink_unicast+0x449/0x710
[10051.569566][T12167]      netlink_sendmsg+0x723/0xbe0
[10051.569566][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10051.569566][T12167]      ___sys_sendmsg+0xee/0x170
[10051.569566][T12167]      __sys_sendmsg+0xcd/0x170
[10051.569566][T12167]      do_syscall_64+0xc6/0x1e0
[10051.569566][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.569566][T12167] 
[10051.571297][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10051.571297][T12167]      neigh_parms_alloc+0x1e5/0x510
[10051.571297][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10051.571297][T12167]      ipv6_find_idev+0x102/0x170
[10051.571297][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10051.571297][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10051.571297][T12167]      netlink_rcv_skb+0x130/0x360
[10051.571297][T12167]      netlink_unicast+0x449/0x710
[10051.571297][T12167]      netlink_sendmsg+0x723/0xbe0
[10051.571297][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10051.571297][T12167]      ___sys_sendmsg+0xee/0x170
[10051.571297][T12167]      __sys_sendmsg+0xcd/0x170
[10051.571297][T12167]      do_syscall_64+0xc6/0x1e0
[10051.571297][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10051.571297][T12167] 
[10061.014804][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10061.015226][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10061.015226][   T10]      dst_init+0x84/0x4a0
[10061.015226][   T10]      dst_alloc+0x97/0x150
[10061.015226][   T10]      ip6_dst_alloc+0x23/0x90
[10061.015226][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10061.015226][   T10]      ip6_pol_route+0x56f/0x840
[10061.015226][   T10]      fib6_rule_lookup+0x334/0x630
[10061.015226][   T10]      ip6_route_output_flags+0x259/0x480
[10061.015226][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10061.015226][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10061.015226][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10061.015226][   T10]      ____sys_sendmsg+0x772/0xa10
[10061.015226][   T10]      ___sys_sendmsg+0xee/0x170
[10061.015226][   T10]      __sys_sendmsg+0xcd/0x170
[10061.015226][   T10]      do_syscall_64+0xc6/0x1e0
[10061.015226][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.015226][   T10] 
[10061.017148][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.017148][   T10]      dst_init+0x84/0x4a0
[10061.017148][   T10]      dst_alloc+0x97/0x150
[10061.017148][   T10]      ip6_dst_alloc+0x23/0x90
[10061.017148][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10061.017148][   T10]      ip6_pol_route+0x56f/0x840
[10061.017148][   T10]      fib6_rule_lookup+0x334/0x630
[10061.017148][   T10]      ip6_route_output_flags+0x259/0x480
[10061.017148][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10061.017148][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10061.017148][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10061.017148][   T10]      ping_v6_sendmsg+0x763/0x1150
[10061.017148][   T10]      ____sys_sendmsg+0x772/0xa10
[10061.017148][   T10]      ___sys_sendmsg+0xee/0x170
[10061.017148][   T10]      __sys_sendmsg+0xcd/0x170
[10061.017148][   T10]      do_syscall_64+0xc6/0x1e0
[10061.017148][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.017148][   T10] 
[10061.019177][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.019177][   T10]      dst_init+0x84/0x4a0
[10061.019177][   T10]      dst_alloc+0x97/0x150
[10061.019177][   T10]      ip6_dst_alloc+0x23/0x90
[10061.019177][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10061.019177][   T10]      ip6_pol_route+0x56f/0x840
[10061.019177][   T10]      fib6_rule_lookup+0x334/0x630
[10061.019177][   T10]      ip6_route_output_flags+0x259/0x480
[10061.019177][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10061.019177][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10061.019177][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10061.019177][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10061.019177][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10061.019177][   T10]      ___sys_sendmsg+0xee/0x170
[10061.019177][   T10]      __sys_sendmsg+0xcd/0x170
[10061.019177][   T10]      do_syscall_64+0xc6/0x1e0
[10061.019177][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.019177][   T10] 
[10061.021216][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.021216][   T10]      netdev_get_by_index+0x5e/0x80
[10061.021216][   T10]      fib6_nh_init+0x3d8/0x1580
[10061.021216][   T10]      ip6_route_info_create+0xf18/0x17d0
[10061.021216][   T10]      ip6_route_add+0x1c/0x140
[10061.021216][   T10]      addrconf_prefix_route+0x2a6/0x430
[10061.021216][   T10]      inet6_addr_add+0x4f8/0xa40
[10061.021216][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10061.021216][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.021216][   T10]      netlink_rcv_skb+0x130/0x360
[10061.021216][   T10]      netlink_unicast+0x449/0x710
[10061.021216][   T10]      netlink_sendmsg+0x723/0xbe0
[10061.021216][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10061.021216][   T10]      ___sys_sendmsg+0xee/0x170
[10061.021216][   T10]      __sys_sendmsg+0xcd/0x170
[10061.021216][   T10]      do_syscall_64+0xc6/0x1e0
[10061.021216][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.021216][   T10] 
[10061.023244][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.023244][   T10]      netdev_get_by_index+0x5e/0x80
[10061.023244][   T10]      fib6_nh_init+0x3d8/0x1580
[10061.023244][   T10]      ip6_route_info_create+0xf18/0x17d0
[10061.023244][   T10]      addrconf_f6i_alloc+0x315/0x560
[10061.023244][   T10]      ipv6_add_addr+0x411/0x2000
[10061.023244][   T10]      inet6_addr_add+0x30e/0xa40
[10061.023244][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10061.023244][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.023244][   T10]      netlink_rcv_skb+0x130/0x360
[10061.023244][   T10]      netlink_unicast+0x449/0x710
[10061.023244][   T10]      netlink_sendmsg+0x723/0xbe0
[10061.023244][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10061.023244][   T10]      ___sys_sendmsg+0xee/0x170
[10061.023244][   T10]      __sys_sendmsg+0xcd/0x170
[10061.023244][   T10]      do_syscall_64+0xc6/0x1e0
[10061.023244][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.023244][   T10] 
[10061.025279][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.025279][   T10]      netdev_get_by_index+0x5e/0x80
[10061.025279][   T10]      fib6_nh_init+0x3d8/0x1580
[10061.025279][   T10]      ip6_route_info_create+0xf18/0x17d0
[10061.025279][   T10]      ip6_route_add+0x1c/0x140
[10061.025279][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10061.025279][   T10]      addrconf_add_dev+0xe2/0x170
[10061.025279][   T10]      inet6_addr_add+0x12f/0xa40
[10061.025279][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10061.025279][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.025279][   T10]      netlink_rcv_skb+0x130/0x360
[10061.025279][   T10]      netlink_unicast+0x449/0x710
[10061.025279][   T10]      netlink_sendmsg+0x723/0xbe0
[10061.025279][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10061.025279][   T10]      ___sys_sendmsg+0xee/0x170
[10061.025279][   T10]      __sys_sendmsg+0xcd/0x170
[10061.025279][   T10]      do_syscall_64+0xc6/0x1e0
[10061.025279][   T10] 
[10061.027265][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.027265][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10061.027265][   T10]      ipv6_find_idev+0x102/0x170
[10061.027265][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10061.027265][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.027265][   T10]      netlink_rcv_skb+0x130/0x360
[10061.027265][   T10]      netlink_unicast+0x449/0x710
[10061.027265][   T10]      netlink_sendmsg+0x723/0xbe0
[10061.027265][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10061.027265][   T10]      ___sys_sendmsg+0xee/0x170
[10061.027265][   T10]      __sys_sendmsg+0xcd/0x170
[10061.027265][   T10]      do_syscall_64+0xc6/0x1e0
[10061.027265][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.027265][   T10] 
[10061.028840][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10061.028840][   T10]      neigh_parms_alloc+0x1e5/0x510
[10061.028840][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10061.028840][   T10]      ipv6_find_idev+0x102/0x170
[10061.028840][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10061.028840][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.028840][   T10]      netlink_rcv_skb+0x130/0x360
[10061.028840][   T10]      netlink_unicast+0x449/0x710
[10061.028840][   T10]      netlink_sendmsg+0x723/0xbe0
[10061.028840][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10061.028840][   T10]      ___sys_sendmsg+0xee/0x170
[10061.028840][   T10]      __sys_sendmsg+0xcd/0x170
[10061.028840][   T10]      do_syscall_64+0xc6/0x1e0
[10061.028840][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.028840][   T10] 
[10061.590827][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10061.591193][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10061.591193][T12167]      netdev_get_by_index+0x5e/0x80
[10061.591193][T12167]      fib6_nh_init+0x3d8/0x1580
[10061.591193][T12167]      ip6_route_info_create+0xf18/0x17d0
[10061.591193][T12167]      addrconf_f6i_alloc+0x315/0x560
[10061.591193][T12167]      ipv6_add_addr+0x411/0x2000
[10061.591193][T12167]      inet6_addr_add+0x30e/0xa40
[10061.591193][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10061.591193][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.591193][T12167]      netlink_rcv_skb+0x130/0x360
[10061.591193][T12167]      netlink_unicast+0x449/0x710
[10061.591193][T12167]      netlink_sendmsg+0x723/0xbe0
[10061.591193][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10061.591193][T12167]      ___sys_sendmsg+0xee/0x170
[10061.591193][T12167]      __sys_sendmsg+0xcd/0x170
[10061.591193][T12167]      do_syscall_64+0xc6/0x1e0
[10061.591193][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.591193][T12167] 
[10061.593455][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10061.593455][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10061.593455][T12167]      ipv6_find_idev+0x102/0x170
[10061.593455][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10061.593455][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.593455][T12167]      netlink_rcv_skb+0x130/0x360
[10061.593455][T12167]      netlink_unicast+0x449/0x710
[10061.593455][T12167]      netlink_sendmsg+0x723/0xbe0
[10061.593455][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10061.593455][T12167]      ___sys_sendmsg+0xee/0x170
[10061.593455][T12167]      __sys_sendmsg+0xcd/0x170
[10061.593455][T12167]      do_syscall_64+0xc6/0x1e0
[10061.593455][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.593455][T12167] 
[10061.595177][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10061.595177][T12167]      neigh_parms_alloc+0x1e5/0x510
[10061.595177][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10061.595177][T12167]      ipv6_find_idev+0x102/0x170
[10061.595177][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10061.595177][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10061.595177][T12167]      netlink_rcv_skb+0x130/0x360
[10061.595177][T12167]      netlink_unicast+0x449/0x710
[10061.595177][T12167]      netlink_sendmsg+0x723/0xbe0
[10061.595177][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10061.595177][T12167]      ___sys_sendmsg+0xee/0x170
[10061.595177][T12167]      __sys_sendmsg+0xcd/0x170
[10061.595177][T12167]      do_syscall_64+0xc6/0x1e0
[10061.595177][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10061.595177][T12167] 
[10071.062767][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10071.063189][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10071.063189][   T10]      dst_init+0x84/0x4a0
[10071.063189][   T10]      dst_alloc+0x97/0x150
[10071.063189][   T10]      ip6_dst_alloc+0x23/0x90
[10071.063189][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10071.063189][   T10]      ip6_pol_route+0x56f/0x840
[10071.063189][   T10]      fib6_rule_lookup+0x334/0x630
[10071.063189][   T10]      ip6_route_output_flags+0x259/0x480
[10071.063189][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10071.063189][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10071.063189][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10071.063189][   T10]      ____sys_sendmsg+0x772/0xa10
[10071.063189][   T10]      ___sys_sendmsg+0xee/0x170
[10071.063189][   T10]      __sys_sendmsg+0xcd/0x170
[10071.063189][   T10]      do_syscall_64+0xc6/0x1e0
[10071.063189][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.063189][   T10] 
[10071.065122][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.065122][   T10]      dst_init+0x84/0x4a0
[10071.065122][   T10]      dst_alloc+0x97/0x150
[10071.065122][   T10]      ip6_dst_alloc+0x23/0x90
[10071.065122][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10071.065122][   T10]      ip6_pol_route+0x56f/0x840
[10071.065122][   T10]      fib6_rule_lookup+0x334/0x630
[10071.065122][   T10]      ip6_route_output_flags+0x259/0x480
[10071.065122][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10071.065122][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10071.065122][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10071.065122][   T10]      ping_v6_sendmsg+0x763/0x1150
[10071.065122][   T10]      ____sys_sendmsg+0x772/0xa10
[10071.065122][   T10]      ___sys_sendmsg+0xee/0x170
[10071.065122][   T10]      __sys_sendmsg+0xcd/0x170
[10071.065122][   T10]      do_syscall_64+0xc6/0x1e0
[10071.065122][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.065122][   T10] 
[10071.067147][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.067147][   T10]      dst_init+0x84/0x4a0
[10071.067147][   T10]      dst_alloc+0x97/0x150
[10071.067147][   T10]      ip6_dst_alloc+0x23/0x90
[10071.067147][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10071.067147][   T10]      ip6_pol_route+0x56f/0x840
[10071.067147][   T10]      fib6_rule_lookup+0x334/0x630
[10071.067147][   T10]      ip6_route_output_flags+0x259/0x480
[10071.067147][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10071.067147][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10071.067147][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10071.067147][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10071.067147][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10071.067147][   T10]      ___sys_sendmsg+0xee/0x170
[10071.067147][   T10]      __sys_sendmsg+0xcd/0x170
[10071.067147][   T10]      do_syscall_64+0xc6/0x1e0
[10071.067147][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.067147][   T10] 
[10071.069189][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.069189][   T10]      netdev_get_by_index+0x5e/0x80
[10071.069189][   T10]      fib6_nh_init+0x3d8/0x1580
[10071.069189][   T10]      ip6_route_info_create+0xf18/0x17d0
[10071.069189][   T10]      ip6_route_add+0x1c/0x140
[10071.069189][   T10]      addrconf_prefix_route+0x2a6/0x430
[10071.069189][   T10]      inet6_addr_add+0x4f8/0xa40
[10071.069189][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10071.069189][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.069189][   T10]      netlink_rcv_skb+0x130/0x360
[10071.069189][   T10]      netlink_unicast+0x449/0x710
[10071.069189][   T10]      netlink_sendmsg+0x723/0xbe0
[10071.069189][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10071.069189][   T10]      ___sys_sendmsg+0xee/0x170
[10071.069189][   T10]      __sys_sendmsg+0xcd/0x170
[10071.069189][   T10]      do_syscall_64+0xc6/0x1e0
[10071.069189][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.069189][   T10] 
[10071.071227][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.071227][   T10]      netdev_get_by_index+0x5e/0x80
[10071.071227][   T10]      fib6_nh_init+0x3d8/0x1580
[10071.071227][   T10]      ip6_route_info_create+0xf18/0x17d0
[10071.071227][   T10]      addrconf_f6i_alloc+0x315/0x560
[10071.071227][   T10]      ipv6_add_addr+0x411/0x2000
[10071.071227][   T10]      inet6_addr_add+0x30e/0xa40
[10071.071227][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10071.071227][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.071227][   T10]      netlink_rcv_skb+0x130/0x360
[10071.071227][   T10]      netlink_unicast+0x449/0x710
[10071.071227][   T10]      netlink_sendmsg+0x723/0xbe0
[10071.071227][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10071.071227][   T10]      ___sys_sendmsg+0xee/0x170
[10071.071227][   T10]      __sys_sendmsg+0xcd/0x170
[10071.071227][   T10]      do_syscall_64+0xc6/0x1e0
[10071.071227][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.071227][   T10] 
[10071.073257][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.073257][   T10]      netdev_get_by_index+0x5e/0x80
[10071.073257][   T10]      fib6_nh_init+0x3d8/0x1580
[10071.073257][   T10]      ip6_route_info_create+0xf18/0x17d0
[10071.073257][   T10]      ip6_route_add+0x1c/0x140
[10071.073257][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10071.073257][   T10]      addrconf_add_dev+0xe2/0x170
[10071.073257][   T10]      inet6_addr_add+0x12f/0xa40
[10071.073257][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10071.073257][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.073257][   T10]      netlink_rcv_skb+0x130/0x360
[10071.073257][   T10]      netlink_unicast+0x449/0x710
[10071.073257][   T10]      netlink_sendmsg+0x723/0xbe0
[10071.073257][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10071.073257][   T10]      ___sys_sendmsg+0xee/0x170
[10071.073257][   T10]      __sys_sendmsg+0xcd/0x170
[10071.073257][   T10]      do_syscall_64+0xc6/0x1e0
[10071.073257][   T10] 
[10071.075246][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.075246][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10071.075246][   T10]      ipv6_find_idev+0x102/0x170
[10071.075246][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10071.075246][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.075246][   T10]      netlink_rcv_skb+0x130/0x360
[10071.075246][   T10]      netlink_unicast+0x449/0x710
[10071.075246][   T10]      netlink_sendmsg+0x723/0xbe0
[10071.075246][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10071.075246][   T10]      ___sys_sendmsg+0xee/0x170
[10071.075246][   T10]      __sys_sendmsg+0xcd/0x170
[10071.075246][   T10]      do_syscall_64+0xc6/0x1e0
[10071.075246][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.075246][   T10] 
[10071.076805][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10071.076805][   T10]      neigh_parms_alloc+0x1e5/0x510
[10071.076805][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10071.076805][   T10]      ipv6_find_idev+0x102/0x170
[10071.076805][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10071.076805][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.076805][   T10]      netlink_rcv_skb+0x130/0x360
[10071.076805][   T10]      netlink_unicast+0x449/0x710
[10071.076805][   T10]      netlink_sendmsg+0x723/0xbe0
[10071.076805][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10071.076805][   T10]      ___sys_sendmsg+0xee/0x170
[10071.076805][   T10]      __sys_sendmsg+0xcd/0x170
[10071.076805][   T10]      do_syscall_64+0xc6/0x1e0
[10071.076805][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.076805][   T10] 
[10071.598720][T12167] unregister_netdevice: waiting for ip6gretap00 to become free. Usage count = 4
[10071.599147][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10071.599147][T12167]      netdev_get_by_index+0x5e/0x80
[10071.599147][T12167]      fib6_nh_init+0x3d8/0x1580
[10071.599147][T12167]      ip6_route_info_create+0xf18/0x17d0
[10071.599147][T12167]      addrconf_f6i_alloc+0x315/0x560
[10071.599147][T12167]      ipv6_add_addr+0x411/0x2000
[10071.599147][T12167]      inet6_addr_add+0x30e/0xa40
[10071.599147][T12167]      inet6_rtm_newaddr+0x560/0x6b0
[10071.599147][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.599147][T12167]      netlink_rcv_skb+0x130/0x360
[10071.599147][T12167]      netlink_unicast+0x449/0x710
[10071.599147][T12167]      netlink_sendmsg+0x723/0xbe0
[10071.599147][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10071.599147][T12167]      ___sys_sendmsg+0xee/0x170
[10071.599147][T12167]      __sys_sendmsg+0xcd/0x170
[10071.599147][T12167]      do_syscall_64+0xc6/0x1e0
[10071.599147][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.599147][T12167] 
[10071.601437][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10071.601437][T12167]      ipv6_add_dev+0x3ba/0x11c0
[10071.601437][T12167]      ipv6_find_idev+0x102/0x170
[10071.601437][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10071.601437][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.601437][T12167]      netlink_rcv_skb+0x130/0x360
[10071.601437][T12167]      netlink_unicast+0x449/0x710
[10071.601437][T12167]      netlink_sendmsg+0x723/0xbe0
[10071.601437][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10071.601437][T12167]      ___sys_sendmsg+0xee/0x170
[10071.601437][T12167]      __sys_sendmsg+0xcd/0x170
[10071.601437][T12167]      do_syscall_64+0xc6/0x1e0
[10071.601437][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.601437][T12167] 
[10071.603190][T12167] ref_tracker: ip6gretap00@ffff88800907c5e0 has 1/3 users at
[10071.603190][T12167]      neigh_parms_alloc+0x1e5/0x510
[10071.603190][T12167]      ipv6_add_dev+0x2fe/0x11c0
[10071.603190][T12167]      ipv6_find_idev+0x102/0x170
[10071.603190][T12167]      inet6_rtm_newaddr+0x37c/0x6b0
[10071.603190][T12167]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10071.603190][T12167]      netlink_rcv_skb+0x130/0x360
[10071.603190][T12167]      netlink_unicast+0x449/0x710
[10071.603190][T12167]      netlink_sendmsg+0x723/0xbe0
[10071.603190][T12167]      ____sys_sendmsg+0x7b2/0xa10
[10071.603190][T12167]      ___sys_sendmsg+0xee/0x170
[10071.603190][T12167]      __sys_sendmsg+0xcd/0x170
[10071.603190][T12167]      do_syscall_64+0xc6/0x1e0
[10071.603190][T12167]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10071.603190][T12167] 

HARD STOP (1409.678635)

WAIT TIMEOUT stderr

Ctrl-C stderr

Ctrl-C stderr
[10081.078724][   T10] unregister_netdevice: waiting for dummy0 to become free. Usage count = 10
[10081.079340][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 2/9 users at
[10081.079340][   T10]      dst_init+0x84/0x4a0
[10081.079340][   T10]      dst_alloc+0x97/0x150
[10081.079340][   T10]      ip6_dst_alloc+0x23/0x90
[10081.079340][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10081.079340][   T10]      ip6_pol_route+0x56f/0x840
[10081.079340][   T10]      fib6_rule_lookup+0x334/0x630
[10081.079340][   T10]      ip6_route_output_flags+0x259/0x480
[10081.079340][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10081.079340][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10081.079340][   T10]      rawv6_sendmsg+0x7c6/0x17d0
[10081.079340][   T10]      ____sys_sendmsg+0x772/0xa10
[10081.079340][   T10]      ___sys_sendmsg+0xee/0x170
[10081.079340][   T10]      __sys_sendmsg+0xcd/0x170
[10081.079340][   T10]      do_syscall_64+0xc6/0x1e0
[10081.079340][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.079340][   T10] 
[10081.081461][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.081461][   T10]      dst_init+0x84/0x4a0
[10081.081461][   T10]      dst_alloc+0x97/0x150
[10081.081461][   T10]      ip6_dst_alloc+0x23/0x90
[10081.081461][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10081.081461][   T10]      ip6_pol_route+0x56f/0x840
[10081.081461][   T10]      fib6_rule_lookup+0x334/0x630
[10081.081461][   T10]      ip6_route_output_flags+0x259/0x480
[10081.081461][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10081.081461][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10081.081461][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10081.081461][   T10]      ping_v6_sendmsg+0x763/0x1150
[10081.081461][   T10]      ____sys_sendmsg+0x772/0xa10
[10081.081461][   T10]      ___sys_sendmsg+0xee/0x170
[10081.081461][   T10]      __sys_sendmsg+0xcd/0x170
[10081.081461][   T10]      do_syscall_64+0xc6/0x1e0
[10081.081461][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.081461][   T10] 
[10081.083707][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.083707][   T10]      dst_init+0x84/0x4a0
[10081.083707][   T10]      dst_alloc+0x97/0x150
[10081.083707][   T10]      ip6_dst_alloc+0x23/0x90
[10081.083707][   T10]      ip6_rt_pcpu_alloc+0x1e6/0x520
[10081.083707][   T10]      ip6_pol_route+0x56f/0x840
[10081.083707][   T10]      fib6_rule_lookup+0x334/0x630
[10081.083707][   T10]      ip6_route_output_flags+0x259/0x480
[10081.083707][   T10]      ip6_dst_lookup_tail.constprop.0+0x31c/0xb60
[10081.083707][   T10]      ip6_dst_lookup_flow+0x88/0x190
[10081.083707][   T10]      ip6_sk_dst_lookup_flow+0x361/0x5b0
[10081.083707][   T10]      udpv6_sendmsg+0xfdc/0x2830
[10081.083707][   T10]      ____sys_sendmsg+0x3f9/0xa10
[10081.083707][   T10]      ___sys_sendmsg+0xee/0x170
[10081.083707][   T10]      __sys_sendmsg+0xcd/0x170
[10081.083707][   T10]      do_syscall_64+0xc6/0x1e0
[10081.083707][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.083707][   T10] 
[10081.085956][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.085956][   T10]      netdev_get_by_index+0x5e/0x80
[10081.085956][   T10]      fib6_nh_init+0x3d8/0x1580
[10081.085956][   T10]      ip6_route_info_create+0xf18/0x17d0
[10081.085956][   T10]      ip6_route_add+0x1c/0x140
[10081.085956][   T10]      addrconf_prefix_route+0x2a6/0x430
[10081.085956][   T10]      inet6_addr_add+0x4f8/0xa40
[10081.085956][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10081.085956][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.085956][   T10]      netlink_rcv_skb+0x130/0x360
[10081.085956][   T10]      netlink_unicast+0x449/0x710
[10081.085956][   T10]      netlink_sendmsg+0x723/0xbe0
[10081.085956][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10081.085956][   T10]      ___sys_sendmsg+0xee/0x170
[10081.085956][   T10]      __sys_sendmsg+0xcd/0x170
[10081.085956][   T10]      do_syscall_64+0xc6/0x1e0
[10081.085956][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.085956][   T10] 
[10081.088191][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.088191][   T10]      netdev_get_by_index+0x5e/0x80
[10081.088191][   T10]      fib6_nh_init+0x3d8/0x1580
[10081.088191][   T10]      ip6_route_info_create+0xf18/0x17d0
[10081.088191][   T10]      addrconf_f6i_alloc+0x315/0x560
[10081.088191][   T10]      ipv6_add_addr+0x411/0x2000
[10081.088191][   T10]      inet6_addr_add+0x30e/0xa40
[10081.088191][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10081.088191][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.088191][   T10]      netlink_rcv_skb+0x130/0x360
[10081.088191][   T10]      netlink_unicast+0x449/0x710
[10081.088191][   T10]      netlink_sendmsg+0x723/0xbe0
[10081.088191][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10081.088191][   T10]      ___sys_sendmsg+0xee/0x170
[10081.088191][   T10]      __sys_sendmsg+0xcd/0x170
[10081.088191][   T10]      do_syscall_64+0xc6/0x1e0
[10081.088191][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.088191][   T10] 
[10081.090426][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.090426][   T10]      netdev_get_by_index+0x5e/0x80
[10081.090426][   T10]      fib6_nh_init+0x3d8/0x1580
[10081.090426][   T10]      ip6_route_info_create+0xf18/0x17d0
[10081.090426][   T10]      ip6_route_add+0x1c/0x140
[10081.090426][   T10]      addrconf_add_mroute+0x1ac/0x2c0
[10081.090426][   T10]      addrconf_add_dev+0xe2/0x170
[10081.090426][   T10]      inet6_addr_add+0x12f/0xa40
[10081.090426][   T10]      inet6_rtm_newaddr+0x560/0x6b0
[10081.090426][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.090426][   T10]      netlink_rcv_skb+0x130/0x360
[10081.090426][   T10]      netlink_unicast+0x449/0x710
[10081.090426][   T10]      netlink_sendmsg+0x723/0xbe0
[10081.090426][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10081.090426][   T10]      ___sys_sendmsg+0xee/0x170
[10081.090426][   T10]      __sys_sendmsg+0xcd/0x170
[10081.090426][   T10]      do_syscall_64+0xc6/0x1e0
[10081.090426][   T10] 
[10081.092613][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.092613][   T10]      ipv6_add_dev+0x3ba/0x11c0
[10081.092613][   T10]      ipv6_find_idev+0x102/0x170
[10081.092613][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10081.092613][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.092613][   T10]      netlink_rcv_skb+0x130/0x360
[10081.092613][   T10]      netlink_unicast+0x449/0x710
[10081.092613][   T10]      netlink_sendmsg+0x723/0xbe0
[10081.092613][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10081.092613][   T10]      ___sys_sendmsg+0xee/0x170
[10081.092613][   T10]      __sys_sendmsg+0xcd/0x170
[10081.092613][   T10]      do_syscall_64+0xc6/0x1e0
[10081.092613][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.092613][   T10] 
[10081.094342][   T10] ref_tracker: dummy%d@ffff8880051695e0 has 1/9 users at
[10081.094342][   T10]      neigh_parms_alloc+0x1e5/0x510
[10081.094342][   T10]      ipv6_add_dev+0x2fe/0x11c0
[10081.094342][   T10]      ipv6_find_idev+0x102/0x170
[10081.094342][   T10]      inet6_rtm_newaddr+0x37c/0x6b0
[10081.094342][   T10]      rtnetlink_rcv_msg+0x2fb/0xbf0
[10081.094342][   T10]      netlink_rcv_skb+0x130/0x360
[10081.094342][   T10]      netlink_unicast+0x449/0x710
[10081.094342][   T10]      netlink_sendmsg+0x723/0xbe0
[10081.094342][   T10]      ____sys_sendmsg+0x7b2/0xa10
[10081.094342][   T10]      ___sys_sendmsg+0xee/0x170
[10081.094342][   T10]      __sys_sendmsg+0xcd/0x170
[10081.094342][   T10]      do_syscall_64+0xc6/0x1e0
[10081.094342][   T10]      entry_SYSCALL_64_after_hwframe+0x6d/0x75
[10081.094342][   T10]