[ 9.448224][ T173] sctp: Hash tables configured (bind 32/56) [ 10.053801][ T193] ip (193) used greatest stack depth: 23880 bytes left [ 29.595659][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 29.671198][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 29.750953][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 29.780811][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 29.899600][ C3] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 30.006001][ C1] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 30.230353][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 30.474314][ C1] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 30.612233][ C1] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 30.912443][ C0] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 93.367538][ T12] [ 93.367622][ T12] ======================================================== [ 93.367755][ T12] WARNING: possible irq lock inversion dependency detected [ 93.367884][ T12] 7.1.0-rc5-virtme #1 Not tainted [ 93.367972][ T12] -------------------------------------------------------- [ 93.368117][ T12] kworker/u16:0/12 just changed the state of lock: [ 93.368220][ T12] ffffffff86984dd8 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.368373][ T12] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 93.368505][ T12] (&ndev->lock){++--}-{3:3} [ 93.368509][ T12] [ 93.368509][ T12] [ 93.368509][ T12] and interrupts could create inverse lock ordering between them. [ 93.368509][ T12] [ 93.368824][ T12] [ 93.368824][ T12] other info that might help us debug this: [ 93.368948][ T12] Possible interrupt unsafe locking scenario: [ 93.368948][ T12] [ 93.369081][ T12] CPU0 CPU1 [ 93.369165][ T12] ---- ---- [ 93.369248][ T12] lock(acaddr_hash_lock); [ 93.369337][ T12] local_irq_disable(); [ 93.369444][ T12] lock(&ndev->lock); [ 93.369554][ T12] lock(acaddr_hash_lock); [ 93.369669][ T12] [ 93.369737][ T12] lock(&ndev->lock); [ 93.369807][ T12] [ 93.369807][ T12] *** DEADLOCK *** [ 93.369807][ T12] [ 93.369929][ T12] 4 locks held by kworker/u16:0/12: [ 93.370023][ T12] #0: ff110000019d1d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410 [ 93.370201][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410 [ 93.370346][ T12] #2: ffffffff8687abe8 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x890 [ 93.370492][ T12] #3: ffffffff86896a00 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 93.370727][ T12] [ 93.370727][ T12] the shortest dependencies between 2nd lock and 1st lock: [ 93.370883][ T12] -> (&ndev->lock){++--}-{3:3} { [ 93.370978][ T12] HARDIRQ-ON-W at: [ 93.371044][ T12] __lock_acquire+0x378/0xc10 [ 93.371155][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.371259][ T12] _raw_write_lock_bh+0x38/0x50 [ 93.371368][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 93.371499][ T12] addrconf_notify+0x151/0xf30 [ 93.371605][ T12] notifier_call_chain+0xb0/0x320 [ 93.371709][ T12] __dev_notify_flags+0xde/0x280 [ 93.371817][ T12] netif_change_flags+0xfe/0x190 [ 93.371931][ T12] do_setlink.isra.0+0x1cc3/0x2750 [ 93.372043][ T12] rtnl_newlink+0x8d1/0xef0 [ 93.372151][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 93.372259][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 93.372364][ T12] netlink_unicast+0x486/0x750 [ 93.372470][ T12] netlink_sendmsg+0x735/0xc60 [ 93.372577][ T12] ____sys_sendmsg+0x419/0x850 [ 93.372689][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 93.372796][ T12] __sys_sendmsg+0x145/0x1f0 [ 93.372906][ T12] do_syscall_64+0xf3/0x650 [ 93.373027][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.373160][ T12] HARDIRQ-ON-R at: [ 93.373226][ T12] __lock_acquire+0x378/0xc10 [ 93.373340][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.373453][ T12] _raw_read_lock_bh+0x44/0x80 [ 93.373565][ T12] inet6_fill_ifla6_attrs+0x1a72/0x2140 [ 93.373696][ T12] inet6_fill_link_af+0x5c/0xe0 [ 93.373810][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 93.373948][ T12] rtnl_getlink+0x9c9/0xeb0 [ 93.374066][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 93.374177][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 93.374289][ T12] netlink_unicast+0x486/0x750 [ 93.374403][ T12] netlink_sendmsg+0x735/0xc60 [ 93.374519][ T12] ____sys_sendmsg+0x419/0x850 [ 93.374631][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 93.374744][ T12] __sys_sendmsg+0x145/0x1f0 [ 93.374853][ T12] do_syscall_64+0xf3/0x650 [ 93.374957][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.375086][ T12] IN-SOFTIRQ-W at: [ 93.375153][ T12] __lock_acquire+0x378/0xc10 [ 93.375258][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.375368][ T12] _raw_write_lock+0x33/0x40 [ 93.375477][ T12] addrconf_rs_timer+0xb0/0x770 [ 93.375591][ T12] call_timer_fn+0x163/0x4f0 [ 93.375705][ T12] __run_timers+0x68f/0xab0 [ 93.375824][ T12] run_timer_softirq+0xf0/0x160 [ 93.375933][ T12] handle_softirqs+0x1d8/0x940 [ 93.376045][ T12] __irq_exit_rcu+0x103/0x1c0 [ 93.376149][ T12] irq_exit_rcu+0xe/0x30 [ 93.376260][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 93.376386][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 93.376521][ T12] pv_native_safe_halt+0xf/0x10 [ 93.376633][ T12] default_idle+0x9/0x10 [ 93.376743][ T12] default_idle_call+0x6e/0xb0 [ 93.376850][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 93.376986][ T12] do_idle+0xf5/0x160 [ 93.377096][ T12] cpu_startup_entry+0x53/0x70 [ 93.377200][ T12] rest_init+0x1f7/0x200 [ 93.377306][ T12] start_kernel+0x3ad/0x3b0 [ 93.377416][ T12] x86_64_start_reservations+0x24/0x30 [ 93.377550][ T12] x86_64_start_kernel+0x12b/0x130 [ 93.377655][ T12] common_startup_64+0x13e/0x148 [ 93.377764][ T12] IN-SOFTIRQ-R at: [ 93.377831][ T12] __lock_acquire+0x378/0xc10 [ 93.377941][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.378048][ T12] _raw_read_lock_bh+0x44/0x80 [ 93.378155][ T12] ipv6_get_lladdr+0xa8/0x3f0 [ 93.378267][ T12] ndisc_send_ns+0xf3/0x120 [ 93.378375][ T12] ndisc_solicit+0x314/0x480 [ 93.378478][ T12] neigh_probe+0xb3/0x100 [ 93.378584][ T12] __neigh_event_send+0x802/0x1070 [ 93.378690][ T12] neigh_resolve_output+0xbe/0x140 [ 93.378794][ T12] ip6_finish_output2+0x423/0x12a0 [ 93.378898][ T12] ip6_finish_output+0x646/0xda0 [ 93.379003][ T12] ip6_output+0x23f/0x7f0 [ 93.379109][ T12] ip6_forward+0x10f4/0x2bd0 [ 93.379217][ T12] ipv6_rcv+0x3c1/0x5a0 [ 93.379327][ T12] __netif_receive_skb_one_core+0xfc/0x180 [ 93.379454][ T12] process_backlog+0x2bc/0x1490 [ 93.379558][ T12] __napi_poll+0xa7/0x3b0 [ 93.379661][ T12] net_rx_action+0x513/0xf50 [ 93.379779][ T12] handle_softirqs+0x1d8/0x940 [ 93.379888][ T12] do_softirq+0xa9/0xe0 [ 93.379998][ T12] __local_bh_enable_ip+0x113/0x140 [ 93.380103][ T12] __neigh_event_send+0x30a/0x1070 [ 93.380208][ T12] neigh_resolve_output+0xbe/0x140 [ 93.380311][ T12] ip6_finish_output2+0x423/0x12a0 [ 93.380414][ T12] ip6_finish_output+0x646/0xda0 [ 93.380523][ T12] ip6_output+0x23f/0x7f0 [ 93.380627][ T12] ip6_send_skb+0xee/0x350 [ 93.380729][ T12] rawv6_push_pending_frames+0x4cb/0xa90 [ 93.380860][ T12] rawv6_sendmsg+0x1434/0x1a50 [ 93.380968][ T12] __sys_sendto+0x2bc/0x3e0 [ 93.381081][ T12] __x64_sys_sendto+0xe4/0x1f0 [ 93.381185][ T12] do_syscall_64+0xf3/0x650 [ 93.381289][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.381415][ T12] INITIAL USE at: [ 93.381478][ T12] __lock_acquire+0x378/0xc10 [ 93.381587][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.381690][ T12] _raw_write_lock_bh+0x38/0x50 [ 93.381793][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 93.381918][ T12] addrconf_notify+0x151/0xf30 [ 93.382028][ T12] notifier_call_chain+0xb0/0x320 [ 93.382138][ T12] __dev_notify_flags+0xde/0x280 [ 93.382242][ T12] netif_change_flags+0xfe/0x190 [ 93.382344][ T12] do_setlink.isra.0+0x1cc3/0x2750 [ 93.382447][ T12] rtnl_newlink+0x8d1/0xef0 [ 93.382557][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 93.382661][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 93.382765][ T12] netlink_unicast+0x486/0x750 [ 93.382868][ T12] netlink_sendmsg+0x735/0xc60 [ 93.382972][ T12] ____sys_sendmsg+0x419/0x850 [ 93.383082][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 93.383189][ T12] __sys_sendmsg+0x145/0x1f0 [ 93.383296][ T12] do_syscall_64+0xf3/0x650 [ 93.383401][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.383529][ T12] INITIAL READ USE at: [ 93.383611][ T12] __lock_acquire+0x378/0xc10 [ 93.383716][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.383842][ T12] _raw_read_lock_bh+0x44/0x80 [ 93.383952][ T12] inet6_fill_ifla6_attrs+0x1a72/0x2140 [ 93.384088][ T12] inet6_fill_link_af+0x5c/0xe0 [ 93.384192][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 93.384320][ T12] rtnl_getlink+0x9c9/0xeb0 [ 93.384423][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 93.384533][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 93.384636][ T12] netlink_unicast+0x486/0x750 [ 93.384738][ T12] netlink_sendmsg+0x735/0xc60 [ 93.384842][ T12] ____sys_sendmsg+0x419/0x850 [ 93.384946][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 93.385057][ T12] __sys_sendmsg+0x145/0x1f0 [ 93.385160][ T12] do_syscall_64+0xf3/0x650 [ 93.385267][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.385392][ T12] } [ 93.385435][ T12] ... key at: [] __key.37+0x0/0x40 [ 93.385565][ T12] ... acquired at: [ 93.385629][ T12] __lock_acquire+0x508/0xc10 [ 93.385712][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.385798][ T12] _raw_spin_lock+0x33/0x40 [ 93.385881][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 93.385990][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 93.386077][ T12] addrconf_join_anycast+0x1bc/0x260 [ 93.386159][ T12] dev_forward_change+0x2be/0x850 [ 93.386248][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 93.386354][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 93.386437][ T12] proc_sys_call_handler+0x31b/0x480 [ 93.386526][ T12] new_sync_write+0x333/0x750 [ 93.386615][ T12] vfs_write+0x6a4/0xc10 [ 93.386702][ T12] ksys_write+0x116/0x250 [ 93.386784][ T12] do_syscall_64+0xf3/0x650 [ 93.386870][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.386972][ T12] [ 93.387023][ T12] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 93.387107][ T12] HARDIRQ-ON-W at: [ 93.387169][ T12] __lock_acquire+0x378/0xc10 [ 93.387272][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.387380][ T12] _raw_spin_lock+0x33/0x40 [ 93.387485][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 93.387656][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 93.387759][ T12] addrconf_join_anycast+0x1bc/0x260 [ 93.387871][ T12] dev_forward_change+0x2be/0x850 [ 93.388028][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 93.388152][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 93.388255][ T12] proc_sys_call_handler+0x31b/0x480 [ 93.388413][ T12] new_sync_write+0x333/0x750 [ 93.388524][ T12] vfs_write+0x6a4/0xc10 [ 93.388629][ T12] ksys_write+0x116/0x250 [ 93.388779][ T12] do_syscall_64+0xf3/0x650 [ 93.388883][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.389012][ T12] SOFTIRQ-ON-W at: [ 93.389120][ T12] __lock_acquire+0x378/0xc10 [ 93.389227][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.389332][ T12] _raw_spin_lock+0x33/0x40 [ 93.389481][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.389589][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 93.389691][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 93.389795][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 93.389947][ T12] addrconf_notify+0x2c8/0xf30 [ 93.390062][ T12] notifier_call_chain+0xb0/0x320 [ 93.390169][ T12] netif_close_many+0x2c9/0x640 [ 93.390318][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 93.390441][ T12] default_device_exit_batch+0x38b/0x600 [ 93.390569][ T12] ops_undo_list+0x2ce/0x8f0 [ 93.390719][ T12] cleanup_net+0x431/0x890 [ 93.390825][ T12] process_one_work+0xdf8/0x1410 [ 93.390933][ T12] worker_thread+0x4f1/0xd60 [ 93.391094][ T12] kthread+0x367/0x460 [ 93.391178][ T12] ret_from_fork+0x4a4/0x720 [ 93.391283][ T12] ret_from_fork_asm+0x11/0x20 [ 93.391433][ T12] INITIAL USE at: [ 93.391494][ T12] __lock_acquire+0x378/0xc10 [ 93.391599][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.391706][ T12] _raw_spin_lock+0x33/0x40 [ 93.391852][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 93.391982][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 93.392093][ T12] addrconf_join_anycast+0x1bc/0x260 [ 93.392249][ T12] dev_forward_change+0x2be/0x850 [ 93.392355][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 93.392483][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 93.392639][ T12] proc_sys_call_handler+0x31b/0x480 [ 93.392748][ T12] new_sync_write+0x333/0x750 [ 93.392875][ T12] vfs_write+0x6a4/0xc10 [ 93.393029][ T12] ksys_write+0x116/0x250 [ 93.393133][ T12] do_syscall_64+0xf3/0x650 [ 93.393239][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 93.393408][ T12] } [ 93.393451][ T12] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 93.393582][ T12] ... acquired at: [ 93.393646][ T12] mark_lock+0x1d7/0xa00 [ 93.393770][ T12] mark_usage+0x105/0x170 [ 93.393854][ T12] __lock_acquire+0x378/0xc10 [ 93.393938][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.394025][ T12] _raw_spin_lock+0x33/0x40 [ 93.394155][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.394248][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 93.394331][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 93.394432][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 93.394566][ T12] addrconf_notify+0x2c8/0xf30 [ 93.394649][ T12] notifier_call_chain+0xb0/0x320 [ 93.394731][ T12] netif_close_many+0x2c9/0x640 [ 93.394816][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 93.394964][ T12] default_device_exit_batch+0x38b/0x600 [ 93.395073][ T12] ops_undo_list+0x2ce/0x8f0 [ 93.395157][ T12] cleanup_net+0x431/0x890 [ 93.395239][ T12] process_one_work+0xdf8/0x1410 [ 93.395371][ T12] worker_thread+0x4f1/0xd60 [ 93.395459][ T12] kthread+0x367/0x460 [ 93.395527][ T12] ret_from_fork+0x4a4/0x720 [ 93.395618][ T12] ret_from_fork_asm+0x11/0x20 [ 93.395744][ T12] [ 93.395786][ T12] [ 93.395786][ T12] stack backtrace: [ 93.395896][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 93.395899][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 93.395901][ T12] Workqueue: netns cleanup_net [ 93.395904][ T12] Call Trace: [ 93.395905][ T12] [ 93.395907][ T12] dump_stack_lvl+0x6f/0xa0 [ 93.395911][ T12] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 93.395914][ T12] mark_lock_irq+0x989/0x9c0 [ 93.395917][ T12] mark_lock+0x1d7/0xa00 [ 93.395919][ T12] mark_usage+0x105/0x170 [ 93.395920][ T12] __lock_acquire+0x378/0xc10 [ 93.395922][ T12] lock_acquire.part.0+0xbc/0x260 [ 93.395924][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.395925][ T12] ? rcu_is_watching+0x15/0xd0 [ 93.395928][ T12] ? do_raw_read_unlock+0x70/0x70 [ 93.395930][ T12] ? lock_acquire+0x134/0x160 [ 93.395932][ T12] _raw_spin_lock+0x33/0x40 [ 93.395933][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.395935][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 93.395937][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 93.395939][ T12] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 93.395941][ T12] ? __ipv6_isatap_ifid+0x210/0x210 [ 93.395943][ T12] ? nlmsg_notify+0x62/0x250 [ 93.395945][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 93.395947][ T12] ? cleanup_prefix_route+0x550/0x550 [ 93.395949][ T12] ? find_held_lock+0x2b/0x80 [ 93.395952][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 93.395954][ T12] ? __rwlock_init+0x150/0x150 [ 93.395955][ T12] ? mark_held_locks+0x40/0x70 [ 93.395957][ T12] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 93.395959][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 93.395961][ T12] ? __timer_delete_sync+0xdb/0x130 [ 93.395963][ T12] ? addrconf_dad_run+0x1b0/0x1b0 [ 93.395966][ T12] ? neigh_flush_one+0x580/0x580 [ 93.395968][ T12] addrconf_notify+0x2c8/0xf30 [ 93.395970][ T12] ? fib_netdev_event+0x1a9/0x5d0 [ 93.395978][ T12] notifier_call_chain+0xb0/0x320 [ 93.395980][ T12] netif_close_many+0x2c9/0x640 [ 93.395982][ T12] ? __dev_close_many+0x530/0x530 [ 93.395984][ T12] ? netif_close_many_and_unlock+0x22/0x2c0 [ 93.395985][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 93.395987][ T12] ? kasan_quarantine_put+0x13e/0x2b0 [ 93.395990][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 93.395992][ T12] ? mutex_is_locked+0x1c/0x50 [ 93.395994][ T12] ? unregister_netdevice_queued+0x80/0x80 [ 93.395996][ T12] ? mutex_is_locked+0x1c/0x50 [ 93.395997][ T12] ? rtnl_is_locked+0x15/0x20 [ 93.395999][ T12] ? unregister_netdevice_queue+0x6a/0x470 [ 93.396001][ T12] ? unregister_netdevice_many+0x20/0x20 [ 93.396003][ T12] default_device_exit_batch+0x38b/0x600 [ 93.396005][ T12] ? generic_xdp_install+0x400/0x400 [ 93.396007][ T12] ? ipmr_free_table+0x12e/0x2a0 [ 93.396009][ T12] ? unregister_netdev+0x60/0x60 [ 93.396011][ T12] ? rtnl_is_locked+0x15/0x20 [ 93.396012][ T12] ? nexthop_net_exit_rtnl+0x1f/0x260 [ 93.396015][ T12] ops_undo_list+0x2ce/0x8f0 [ 93.396017][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 93.396019][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0 [ 93.396020][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 93.396022][ T12] ? idr_destroy+0x121/0x250 [ 93.396025][ T12] cleanup_net+0x431/0x890 [ 93.396027][ T12] ? net_passive_dec+0x1c0/0x1c0 [ 93.396028][ T12] ? process_one_work+0xdb7/0x1410 [ 93.396030][ T12] ? lock_acquire+0x134/0x160 [ 93.396031][ T12] ? rcu_is_watching+0x15/0xd0 [ 93.396033][ T12] process_one_work+0xdf8/0x1410 [ 93.396036][ T12] ? pwq_dec_nr_in_flight+0x710/0x710 [ 93.396038][ T12] ? lock_acquire.part.0+0xbc/0x260 [ 93.396040][ T12] worker_thread+0x4f1/0xd60 [ 93.396043][ T12] ? rescuer_thread+0x1320/0x1320 [ 93.396045][ T12] kthread+0x367/0x460 [ 93.396046][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 93.396049][ T12] ? kthread_affine_node+0x330/0x330 [ 93.396051][ T12] ret_from_fork+0x4a4/0x720 [ 93.396053][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 93.396054][ T12] ? __switch_to+0x5a3/0xe00 [ 93.396057][ T12] ? kthread_affine_node+0x330/0x330 [ 93.396058][ T12] ret_from_fork_asm+0x11/0x20 [ 93.396061][ T12]