[ 255.482712][ T10] unregister_netdevice: waiting for ktst-veth to become free. Usage count = 213 [ 255.483131][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 100/212 users at [ 255.483131][ T10] netdev_get_by_index+0x5e/0x80 [ 255.483131][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.483131][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.483131][ T10] ip6_route_add+0x1c/0x140 [ 255.483131][ T10] addrconf_prefix_route+0x2a6/0x430 [ 255.483131][ T10] inet6_addr_add+0x4f8/0xa40 [ 255.483131][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.483131][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.483131][ T10] netlink_rcv_skb+0x130/0x360 [ 255.483131][ T10] netlink_unicast+0x449/0x710 [ 255.483131][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.483131][ T10] __sys_sendto+0x37d/0x410 [ 255.483131][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.483131][ T10] do_syscall_64+0xc6/0x1e0 [ 255.483131][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.483131][ T10] [ 255.485101][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 100/212 users at [ 255.485101][ T10] netdev_get_by_index+0x5e/0x80 [ 255.485101][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.485101][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.485101][ T10] addrconf_f6i_alloc+0x315/0x560 [ 255.485101][ T10] ipv6_add_addr+0x411/0x2000 [ 255.485101][ T10] inet6_addr_add+0x30e/0xa40 [ 255.485101][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.485101][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.485101][ T10] netlink_rcv_skb+0x130/0x360 [ 255.485101][ T10] netlink_unicast+0x449/0x710 [ 255.485101][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.485101][ T10] __sys_sendto+0x37d/0x410 [ 255.485101][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.485101][ T10] do_syscall_64+0xc6/0x1e0 [ 255.485101][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.485101][ T10] [ 255.487017][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 3/212 users at [ 255.487017][ T10] dst_init+0x84/0x4a0 [ 255.487017][ T10] dst_alloc+0x97/0x150 [ 255.487017][ T10] ip6_dst_alloc+0x23/0x90 [ 255.487017][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.487017][ T10] ip6_pol_route+0x56f/0x840 [ 255.487017][ T10] fib6_rule_lookup+0x334/0x630 [ 255.487017][ T10] ip6_route_output_flags+0x259/0x480 [ 255.487017][ T10] ip6_dst_lookup_tail.constprop.0+0x700/0xb60 [ 255.487017][ T10] ip6_dst_lookup_flow+0x88/0x190 [ 255.487017][ T10] tcp_v6_connect+0xa69/0x1ba0 [ 255.487017][ T10] __inet_stream_connect+0x272/0x9f0 [ 255.487017][ T10] inet_stream_connect+0x57/0xa0 [ 255.487017][ T10] __sys_connect+0x217/0x2a0 [ 255.487017][ T10] __x64_sys_connect+0x72/0xb0 [ 255.487017][ T10] do_syscall_64+0xc6/0x1e0 [ 255.487017][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.487017][ T10] [ 255.489040][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 4/212 users at [ 255.489040][ T10] dst_init+0x84/0x4a0 [ 255.489040][ T10] dst_alloc+0x97/0x150 [ 255.489040][ T10] ip6_dst_alloc+0x23/0x90 [ 255.489040][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.489040][ T10] ip6_pol_route+0x56f/0x840 [ 255.489040][ T10] fib6_rule_lookup+0x456/0x630 [ 255.489040][ T10] ip6_route_input+0x59c/0xa40 [ 255.489040][ T10] ipv6_rcv+0x184/0x520 [ 255.489040][ T10] __netif_receive_skb_one_core+0x118/0x1b0 [ 255.489040][ T10] process_backlog+0x101/0x620 [ 255.489040][ T10] __napi_poll.constprop.0+0xa2/0x460 [ 255.489040][ T10] net_rx_action+0x495/0xbe0 [ 255.489040][ T10] __do_softirq+0x1b5/0x7f6 [ 255.489040][ T10] [ 255.490649][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 1/212 users at [ 255.490649][ T10] dst_init+0x84/0x4a0 [ 255.490649][ T10] dst_alloc+0x97/0x150 [ 255.490649][ T10] ip6_dst_alloc+0x23/0x90 [ 255.490649][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.490649][ T10] ip6_pol_route+0x56f/0x840 [ 255.490649][ T10] fib6_rule_lookup+0x334/0x630 [ 255.490649][ T10] ip6_route_output_flags+0x259/0x480 [ 255.490649][ T10] ip6_dst_lookup_tail.constprop.0+0x700/0xb60 [ 255.490649][ T10] ip6_dst_lookup_flow+0x88/0x190 [ 255.490649][ T10] tcp_v6_send_response+0x1008/0x2340 [ 255.490649][ T10] tcp_v6_timewait_ack+0x35b/0x7d0 [ 255.490649][ T10] tcp_v6_rcv+0xcac/0x2540 [ 255.490649][ T10] ip6_protocol_deliver_rcu+0x125/0x1270 [ 255.490649][ T10] ip6_input+0x165/0x2b0 [ 255.490649][ T10] __netif_receive_skb_one_core+0x118/0x1b0 [ 255.490649][ T10] process_backlog+0x101/0x620 [ 255.490649][ T10] [ 255.492664][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 1/212 users at [ 255.492664][ T10] netdev_get_by_index+0x5e/0x80 [ 255.492664][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.492664][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.492664][ T10] ip6_route_add+0x1c/0x140 [ 255.492664][ T10] inet6_rtm_newroute+0x104/0x110 [ 255.492664][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.492664][ T10] netlink_rcv_skb+0x130/0x360 [ 255.492664][ T10] netlink_unicast+0x449/0x710 [ 255.492664][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.492664][ T10] __sys_sendto+0x37d/0x410 [ 255.492664][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.492664][ T10] do_syscall_64+0xc6/0x1e0 [ 255.492664][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.492664][ T10] [ 255.494356][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 1/212 users at [ 255.494356][ T10] netdev_get_by_index+0x5e/0x80 [ 255.494356][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.494356][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.494356][ T10] ip6_route_add+0x1c/0x140 [ 255.494356][ T10] addrconf_add_mroute+0x1ac/0x2c0 [ 255.494356][ T10] addrconf_add_dev+0xe2/0x170 [ 255.494356][ T10] inet6_addr_add+0x12f/0xa40 [ 255.494356][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.494356][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.494356][ T10] netlink_rcv_skb+0x130/0x360 [ 255.494356][ T10] netlink_unicast+0x449/0x710 [ 255.494356][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.494356][ T10] __sys_sendto+0x37d/0x410 [ 255.494356][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.494356][ T10] do_syscall_64+0xc6/0x1e0 [ 255.494356][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.494356][ T10] [ 255.496403][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 1/212 users at [ 255.496403][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 255.496403][ T10] ipv6_find_idev+0x102/0x170 [ 255.496403][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 255.496403][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.496403][ T10] netlink_rcv_skb+0x130/0x360 [ 255.496403][ T10] netlink_unicast+0x449/0x710 [ 255.496403][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.496403][ T10] __sys_sendto+0x37d/0x410 [ 255.496403][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.496403][ T10] do_syscall_64+0xc6/0x1e0 [ 255.496403][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.496403][ T10] [ 255.498020][ T10] ref_tracker: ktst-veth@ffff8880058e15b8 has 1/212 users at [ 255.498020][ T10] neigh_parms_alloc+0x1e5/0x510 [ 255.498020][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 255.498020][ T10] ipv6_find_idev+0x102/0x170 [ 255.498020][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 255.498020][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.498020][ T10] netlink_rcv_skb+0x130/0x360 [ 255.498020][ T10] netlink_unicast+0x449/0x710 [ 255.498020][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.498020][ T10] __sys_sendto+0x37d/0x410 [ 255.498020][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.498020][ T10] do_syscall_64+0xc6/0x1e0 [ 255.498020][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.498020][ T10] [ 255.499880][ T10] unregister_netdevice: waiting for ktst-veth to become free. Usage count = 8576 [ 255.501310][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 372/8575 users at [ 255.501310][ T10] dst_init+0x84/0x4a0 [ 255.501310][ T10] dst_alloc+0x97/0x150 [ 255.501310][ T10] ip6_dst_alloc+0x23/0x90 [ 255.501310][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.501310][ T10] ip6_pol_route+0x56f/0x840 [ 255.501310][ T10] fib6_rule_lookup+0x334/0x630 [ 255.501310][ T10] ip6_route_output_flags+0x259/0x480 [ 255.501310][ T10] ip6_dst_lookup_tail.constprop.0+0x700/0xb60 [ 255.501310][ T10] ip6_dst_lookup_flow+0x88/0x190 [ 255.501310][ T10] inet6_csk_route_req+0x4af/0x6e0 [ 255.501310][ T10] tcp_conn_request+0xa5d/0x2d10 [ 255.501310][ T10] tcp_rcv_state_process+0x453/0x1fe0 [ 255.501310][ T10] tcp_v6_do_rcv+0x343/0x12f0 [ 255.501310][ T10] tcp_v6_rcv+0x2166/0x2540 [ 255.501310][ T10] ip6_protocol_deliver_rcu+0x125/0x1270 [ 255.501310][ T10] ip6_input+0x165/0x2b0 [ 255.501310][ T10] [ 255.503327][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 8193/8575 users at [ 255.503327][ T10] netdev_get_by_index+0x5e/0x80 [ 255.503327][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.503327][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.503327][ T10] ip6_route_add+0x1c/0x140 [ 255.503327][ T10] inet6_rtm_newroute+0x104/0x110 [ 255.503327][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.503327][ T10] netlink_rcv_skb+0x130/0x360 [ 255.503327][ T10] netlink_unicast+0x449/0x710 [ 255.503327][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.503327][ T10] __sys_sendto+0x37d/0x410 [ 255.503327][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.503327][ T10] do_syscall_64+0xc6/0x1e0 [ 255.503327][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.503327][ T10] [ 255.505014][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.505014][ T10] dst_init+0x84/0x4a0 [ 255.505014][ T10] dst_alloc+0x97/0x150 [ 255.505014][ T10] ip6_dst_alloc+0x23/0x90 [ 255.505014][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.505014][ T10] ip6_pol_route+0x56f/0x840 [ 255.505014][ T10] fib6_rule_lookup+0x334/0x630 [ 255.505014][ T10] ip6_route_output_flags+0x259/0x480 [ 255.505014][ T10] ip6_dst_lookup_tail.constprop.0+0x700/0xb60 [ 255.505014][ T10] ip6_dst_lookup_flow+0x88/0x190 [ 255.505014][ T10] tcp_v6_send_response+0x1008/0x2340 [ 255.505014][ T10] tcp_v6_timewait_ack+0x35b/0x7d0 [ 255.505014][ T10] tcp_v6_rcv+0xcac/0x2540 [ 255.505014][ T10] ip6_protocol_deliver_rcu+0x125/0x1270 [ 255.505014][ T10] ip6_input+0x165/0x2b0 [ 255.505014][ T10] __netif_receive_skb_one_core+0x118/0x1b0 [ 255.505014][ T10] process_backlog+0x101/0x620 [ 255.505014][ T10] [ 255.507161][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 4/8575 users at [ 255.507161][ T10] dst_init+0x84/0x4a0 [ 255.507161][ T10] dst_alloc+0x97/0x150 [ 255.507161][ T10] ip6_dst_alloc+0x23/0x90 [ 255.507161][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.507161][ T10] ip6_pol_route+0x56f/0x840 [ 255.507161][ T10] fib6_rule_lookup+0x456/0x630 [ 255.507161][ T10] ip6_route_input+0x59c/0xa40 [ 255.507161][ T10] ipv6_rcv+0x184/0x520 [ 255.507161][ T10] __netif_receive_skb_one_core+0x118/0x1b0 [ 255.507161][ T10] process_backlog+0x101/0x620 [ 255.507161][ T10] __napi_poll.constprop.0+0xa2/0x460 [ 255.507161][ T10] net_rx_action+0x495/0xbe0 [ 255.507161][ T10] __do_softirq+0x1b5/0x7f6 [ 255.507161][ T10] [ 255.508838][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.508838][ T10] netdev_get_by_index+0x5e/0x80 [ 255.508838][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.508838][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.508838][ T10] ip6_route_add+0x1c/0x140 [ 255.508838][ T10] addrconf_prefix_route+0x2a6/0x430 [ 255.508838][ T10] inet6_addr_add+0x4f8/0xa40 [ 255.508838][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.508838][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.508838][ T10] netlink_rcv_skb+0x130/0x360 [ 255.508838][ T10] netlink_unicast+0x449/0x710 [ 255.508838][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.508838][ T10] __sys_sendto+0x37d/0x410 [ 255.508838][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.508838][ T10] do_syscall_64+0xc6/0x1e0 [ 255.508838][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.508838][ T10] [ 255.511010][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.511010][ T10] netdev_get_by_index+0x5e/0x80 [ 255.511010][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.511010][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.511010][ T10] addrconf_f6i_alloc+0x315/0x560 [ 255.511010][ T10] ipv6_add_addr+0x411/0x2000 [ 255.511010][ T10] inet6_addr_add+0x30e/0xa40 [ 255.511010][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.511010][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.511010][ T10] netlink_rcv_skb+0x130/0x360 [ 255.511010][ T10] netlink_unicast+0x449/0x710 [ 255.511010][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.511010][ T10] __sys_sendto+0x37d/0x410 [ 255.511010][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.511010][ T10] do_syscall_64+0xc6/0x1e0 [ 255.511010][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.511010][ T10] [ 255.513078][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.513078][ T10] netdev_get_by_index+0x5e/0x80 [ 255.513078][ T10] fib6_nh_init+0x3d8/0x15b0 [ 255.513078][ T10] ip6_route_info_create+0xf18/0x17d0 [ 255.513078][ T10] ip6_route_add+0x1c/0x140 [ 255.513078][ T10] addrconf_add_mroute+0x1ac/0x2c0 [ 255.513078][ T10] addrconf_add_dev+0xe2/0x170 [ 255.513078][ T10] inet6_addr_add+0x12f/0xa40 [ 255.513078][ T10] inet6_rtm_newaddr+0x560/0x6b0 [ 255.513078][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.513078][ T10] netlink_rcv_skb+0x130/0x360 [ 255.513078][ T10] netlink_unicast+0x449/0x710 [ 255.513078][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.513078][ T10] __sys_sendto+0x37d/0x410 [ 255.513078][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.513078][ T10] do_syscall_64+0xc6/0x1e0 [ 255.513078][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.513078][ T10] [ 255.515253][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.515253][ T10] ipv6_add_dev+0x3ba/0x11c0 [ 255.515253][ T10] ipv6_find_idev+0x102/0x170 [ 255.515253][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 255.515253][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.515253][ T10] netlink_rcv_skb+0x130/0x360 [ 255.515253][ T10] netlink_unicast+0x449/0x710 [ 255.515253][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.515253][ T10] __sys_sendto+0x37d/0x410 [ 255.515253][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.515253][ T10] do_syscall_64+0xc6/0x1e0 [ 255.515253][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.515253][ T10] [ 255.516744][ T10] ref_tracker: ktst-veth@ffff8880079645b8 has 1/8575 users at [ 255.516744][ T10] neigh_parms_alloc+0x1e5/0x510 [ 255.516744][ T10] ipv6_add_dev+0x2fe/0x11c0 [ 255.516744][ T10] ipv6_find_idev+0x102/0x170 [ 255.516744][ T10] inet6_rtm_newaddr+0x37c/0x6b0 [ 255.516744][ T10] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 255.516744][ T10] netlink_rcv_skb+0x130/0x360 [ 255.516744][ T10] netlink_unicast+0x449/0x710 [ 255.516744][ T10] netlink_sendmsg+0x723/0xbe0 [ 255.516744][ T10] __sys_sendto+0x37d/0x410 [ 255.516744][ T10] __x64_sys_sendto+0xe0/0x1c0 [ 255.516744][ T10] do_syscall_64+0xc6/0x1e0 [ 255.516744][ T10] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 255.516744][ T10] [ 255.518674][ T10] unregister_netdevice: waiting for lo to become free. Usage count = 397 [ 255.518979][ T10] ref_tracker: lo@ffff8880068c95b8 has 396/396 users at [ 255.518979][ T10] dst_init+0x84/0x4a0 [ 255.518979][ T10] dst_alloc+0x97/0x150 [ 255.518979][ T10] ip6_dst_alloc+0x23/0x90 [ 255.518979][ T10] ip6_rt_pcpu_alloc+0x1e6/0x520 [ 255.518979][ T10] ip6_pol_route+0x56f/0x840 [ 255.518979][ T10] fib6_rule_lookup+0x456/0x630 [ 255.518979][ T10] ip6_route_input+0x59c/0xa40 [ 255.518979][ T10] ipv6_rcv+0x184/0x520 [ 255.518979][ T10] __netif_receive_skb_one_core+0x118/0x1b0 [ 255.518979][ T10] process_backlog+0x101/0x620 [ 255.518979][ T10] __napi_poll.constprop.0+0xa2/0x460 [ 255.518979][ T10] net_rx_action+0x495/0xbe0 [ 255.518979][ T10] __do_softirq+0x1b5/0x7f6 [ 255.518979][ T10]