[ 318.486271][ C0] clocksource: Watchdog remote CPU 3 read timed out [ 427.507374][ T12] [ 427.507466][ T12] ======================================================== [ 427.507640][ T12] WARNING: possible irq lock inversion dependency detected [ 427.507769][ T12] 7.1.0-rc5-virtme #1 Not tainted [ 427.507852][ T12] -------------------------------------------------------- [ 427.508027][ T12] kworker/u16:0/12 just changed the state of lock: [ 427.508135][ T12] ffffffff8d7b7438 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.508337][ T12] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 427.508463][ T12] (&ndev->lock){++--}-{3:3} [ 427.508466][ T12] [ 427.508466][ T12] [ 427.508466][ T12] and interrupts could create inverse lock ordering between them. [ 427.508466][ T12] [ 427.508809][ T12] [ 427.508809][ T12] other info that might help us debug this: [ 427.508940][ T12] Possible interrupt unsafe locking scenario: [ 427.508940][ T12] [ 427.509109][ T12] CPU0 CPU1 [ 427.509192][ T12] ---- ---- [ 427.509280][ T12] lock(acaddr_hash_lock); [ 427.509364][ T12] local_irq_disable(); [ 427.509512][ T12] lock(&ndev->lock); [ 427.509621][ T12] lock(acaddr_hash_lock); [ 427.509736][ T12] [ 427.509843][ T12] lock(&ndev->lock); [ 427.509910][ T12] [ 427.509910][ T12] *** DEADLOCK *** [ 427.509910][ T12] [ 427.510034][ T12] 4 locks held by kworker/u16:0/12: [ 427.510122][ T12] #0: ff110000019e9d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410 [ 427.510344][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410 [ 427.510489][ T12] #2: ffffffff8d698268 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x940 [ 427.510686][ T12] #3: ffffffff8d6b4040 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 427.510859][ T12] [ 427.510859][ T12] the shortest dependencies between 2nd lock and 1st lock: [ 427.511054][ T12] -> (&ndev->lock){++--}-{3:3} { [ 427.511141][ T12] HARDIRQ-ON-W at: [ 427.511206][ T12] __lock_acquire+0x378/0xc10 [ 427.511313][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.511466][ T12] _raw_write_lock_bh+0x38/0x50 [ 427.511580][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 427.511706][ T12] addrconf_notify+0x151/0xf30 [ 427.511860][ T12] notifier_call_chain+0xb0/0x320 [ 427.511968][ T12] __dev_notify_flags+0xde/0x280 [ 427.512072][ T12] netif_change_flags+0xfe/0x190 [ 427.512220][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 427.512326][ T12] rtnl_newlink+0x8d1/0xee0 [ 427.512430][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 427.512580][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 427.512684][ T12] netlink_unicast+0x486/0x750 [ 427.512788][ T12] netlink_sendmsg+0x735/0xc60 [ 427.512938][ T12] ____sys_sendmsg+0x419/0x850 [ 427.513045][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 427.513148][ T12] __sys_sendmsg+0x145/0x1f0 [ 427.513253][ T12] do_syscall_64+0x117/0x590 [ 427.513405][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 427.513533][ T12] HARDIRQ-ON-R at: [ 427.513594][ T12] __lock_acquire+0x378/0xc10 [ 427.513749][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.513861][ T12] _raw_read_lock_bh+0x44/0x80 [ 427.513975][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 427.514143][ T12] inet6_fill_link_af+0x5c/0xe0 [ 427.514246][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 427.514372][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 427.514545][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 427.514671][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 427.514774][ T12] register_netdevice+0x1526/0x1bc0 [ 427.514925][ T12] register_netdev+0x23/0x40 [ 427.515028][ T12] vti6_init_net+0x280/0x3c0 [ 427.515137][ T12] ops_init+0x187/0x560 [ 427.515288][ T12] register_pernet_operations+0x395/0x8e0 [ 427.515415][ T12] register_pernet_device+0x2c/0x60 [ 427.515525][ T12] vti6_tunnel_init+0x17/0x100 [ 427.515681][ T12] do_one_initcall+0x12b/0x520 [ 427.515787][ T12] kernel_init_freeable+0x596/0x630 [ 427.515894][ T12] kernel_init+0x1e/0x170 [ 427.516045][ T12] ret_from_fork+0x474/0x6b0 [ 427.516150][ T12] ret_from_fork_asm+0x11/0x20 [ 427.516253][ T12] IN-SOFTIRQ-W at: [ 427.516315][ T12] __lock_acquire+0x378/0xc10 [ 427.516469][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.516572][ T12] _raw_write_lock+0x33/0x40 [ 427.516676][ T12] addrconf_rs_timer+0xb0/0x770 [ 427.516825][ T12] call_timer_fn+0x163/0x4f0 [ 427.516939][ T12] __run_timers+0x68f/0xab0 [ 427.517041][ T12] run_timer_softirq+0xf0/0x160 [ 427.517193][ T12] handle_softirqs+0x1d8/0x940 [ 427.517299][ T12] __irq_exit_rcu+0x103/0x1c0 [ 427.517403][ T12] irq_exit_rcu+0xe/0x30 [ 427.517551][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 427.517676][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 427.517804][ T12] lock_release+0xdc/0x1f0 [ 427.517957][ T12] unwind_next_frame+0x696/0x1ea0 [ 427.518066][ T12] arch_stack_walk+0xd7/0x130 [ 427.518175][ T12] stack_trace_save+0x93/0xc0 [ 427.518326][ T12] kasan_save_stack+0x2f/0x50 [ 427.518435][ T12] kasan_save_track+0x14/0x30 [ 427.518537][ T12] __kasan_slab_alloc+0x60/0x70 [ 427.518647][ T12] kmem_cache_alloc_noprof+0x221/0x5f0 [ 427.518815][ T12] __anon_vma_prepare+0x2e6/0x580 [ 427.518928][ T12] __vmf_anon_prepare+0xf7/0x2a0 [ 427.519036][ T12] do_pte_missing+0x471/0xe40 [ 427.519185][ T12] __handle_mm_fault+0x5ed/0x840 [ 427.519293][ T12] handle_mm_fault+0x18b/0x4b0 [ 427.519395][ T12] do_user_addr_fault+0x2e9/0xe30 [ 427.519545][ T12] exc_page_fault+0x87/0x100 [ 427.519652][ T12] asm_exc_page_fault+0x26/0x30 [ 427.519758][ T12] elf_load+0x3fe/0x620 [ 427.519920][ T12] load_elf_binary+0xfe5/0x2cb0 [ 427.520023][ T12] exec_binprm+0x265/0x630 [ 427.520131][ T12] bprm_execve+0x190/0x4d0 [ 427.520281][ T12] do_execveat_common.isra.0+0x3e4/0x4f0 [ 427.520403][ T12] __x64_sys_execve+0x91/0xc0 [ 427.520509][ T12] do_syscall_64+0x117/0x590 [ 427.520659][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 427.520790][ T12] IN-SOFTIRQ-R at: [ 427.520856][ T12] __lock_acquire+0x378/0xc10 [ 427.520964][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.521113][ T12] _raw_read_lock_bh+0x44/0x80 [ 427.521217][ T12] ipv6_get_lladdr+0xa8/0x3f0 [ 427.521324][ T12] addrconf_rs_timer+0x251/0x770 [ 427.521475][ T12] call_timer_fn+0x163/0x4f0 [ 427.521585][ T12] __run_timers+0x68f/0xab0 [ 427.521688][ T12] run_timer_softirq+0xf0/0x160 [ 427.521834][ T12] handle_softirqs+0x1d8/0x940 [ 427.521941][ T12] __irq_exit_rcu+0x103/0x1c0 [ 427.522047][ T12] irq_exit_rcu+0xe/0x30 [ 427.522201][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 427.522327][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 427.522450][ T12] lock_release+0xdc/0x1f0 [ 427.522597][ T12] unwind_next_frame+0x696/0x1ea0 [ 427.522703][ T12] arch_stack_walk+0xd7/0x130 [ 427.522809][ T12] stack_trace_save+0x93/0xc0 [ 427.522959][ T12] kasan_save_stack+0x2f/0x50 [ 427.523064][ T12] kasan_save_track+0x14/0x30 [ 427.523172][ T12] __kasan_slab_alloc+0x60/0x70 [ 427.523327][ T12] kmem_cache_alloc_noprof+0x221/0x5f0 [ 427.523452][ T12] __anon_vma_prepare+0x2e6/0x580 [ 427.523559][ T12] __vmf_anon_prepare+0xf7/0x2a0 [ 427.523709][ T12] do_pte_missing+0x471/0xe40 [ 427.523814][ T12] __handle_mm_fault+0x5ed/0x840 [ 427.523925][ T12] handle_mm_fault+0x18b/0x4b0 [ 427.524028][ T12] do_user_addr_fault+0x2e9/0xe30 [ 427.524174][ T12] exc_page_fault+0x87/0x100 [ 427.524280][ T12] asm_exc_page_fault+0x26/0x30 [ 427.524381][ T12] elf_load+0x3fe/0x620 [ 427.524539][ T12] load_elf_binary+0xfe5/0x2cb0 [ 427.524640][ T12] exec_binprm+0x265/0x630 [ 427.524743][ T12] bprm_execve+0x190/0x4d0 [ 427.524893][ T12] do_execveat_common.isra.0+0x3e4/0x4f0 [ 427.525021][ T12] __x64_sys_execve+0x91/0xc0 [ 427.525133][ T12] do_syscall_64+0x117/0x590 [ 427.525280][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 427.525403][ T12] INITIAL USE at: [ 427.525465][ T12] __lock_acquire+0x378/0xc10 [ 427.525610][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.525716][ T12] _raw_write_lock_bh+0x38/0x50 [ 427.525817][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 427.525996][ T12] addrconf_notify+0x151/0xf30 [ 427.526097][ T12] notifier_call_chain+0xb0/0x320 [ 427.526198][ T12] __dev_notify_flags+0xde/0x280 [ 427.526300][ T12] netif_change_flags+0xfe/0x190 [ 427.526449][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 427.526550][ T12] rtnl_newlink+0x8d1/0xee0 [ 427.526651][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 427.526802][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 427.526912][ T12] netlink_unicast+0x486/0x750 [ 427.527022][ T12] netlink_sendmsg+0x735/0xc60 [ 427.527177][ T12] ____sys_sendmsg+0x419/0x850 [ 427.527286][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 427.527387][ T12] __sys_sendmsg+0x145/0x1f0 [ 427.527531][ T12] do_syscall_64+0x117/0x590 [ 427.527632][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 427.527755][ T12] INITIAL READ USE at: [ 427.527880][ T12] __lock_acquire+0x378/0xc10 [ 427.527986][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.528108][ T12] _raw_read_lock_bh+0x44/0x80 [ 427.528257][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 427.528381][ T12] inet6_fill_link_af+0x5c/0xe0 [ 427.528491][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 427.528660][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 427.528781][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 427.528907][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 427.529061][ T12] register_netdevice+0x1526/0x1bc0 [ 427.529181][ T12] register_netdev+0x23/0x40 [ 427.529283][ T12] vti6_init_net+0x280/0x3c0 [ 427.529429][ T12] ops_init+0x187/0x560 [ 427.529536][ T12] register_pernet_operations+0x395/0x8e0 [ 427.529658][ T12] register_pernet_device+0x2c/0x60 [ 427.529826][ T12] vti6_tunnel_init+0x17/0x100 [ 427.529933][ T12] do_one_initcall+0x12b/0x520 [ 427.530035][ T12] kernel_init_freeable+0x596/0x630 [ 427.530205][ T12] kernel_init+0x1e/0x170 [ 427.530307][ T12] ret_from_fork+0x474/0x6b0 [ 427.530407][ T12] ret_from_fork_asm+0x11/0x20 [ 427.530557][ T12] } [ 427.530599][ T12] ... key at: [] __key.37+0x0/0x40 [ 427.530723][ T12] ... acquired at: [ 427.530785][ T12] __lock_acquire+0x508/0xc10 [ 427.530917][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.530998][ T12] _raw_spin_lock+0x33/0x40 [ 427.531079][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 427.531179][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 427.531303][ T12] addrconf_join_anycast+0x1bc/0x260 [ 427.531389][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 427.531470][ T12] addrconf_dad_completed+0x14b/0xe10 [ 427.531553][ T12] addrconf_dad_work+0x3c1/0x930 [ 427.531678][ T12] process_one_work+0xdf8/0x1410 [ 427.531758][ T12] worker_thread+0x4f1/0xd60 [ 427.531843][ T12] kthread+0x367/0x460 [ 427.531908][ T12] ret_from_fork+0x474/0x6b0 [ 427.532032][ T12] ret_from_fork_asm+0x11/0x20 [ 427.532117][ T12] [ 427.532158][ T12] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 427.532242][ T12] HARDIRQ-ON-W at: [ 427.532303][ T12] __lock_acquire+0x378/0xc10 [ 427.532454][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.532554][ T12] _raw_spin_lock+0x33/0x40 [ 427.532659][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 427.532823][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 427.532931][ T12] addrconf_join_anycast+0x1bc/0x260 [ 427.533031][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 427.533175][ T12] addrconf_dad_completed+0x14b/0xe10 [ 427.533282][ T12] addrconf_dad_work+0x3c1/0x930 [ 427.533383][ T12] process_one_work+0xdf8/0x1410 [ 427.533529][ T12] worker_thread+0x4f1/0xd60 [ 427.533632][ T12] kthread+0x367/0x460 [ 427.533713][ T12] ret_from_fork+0x474/0x6b0 [ 427.533814][ T12] ret_from_fork_asm+0x11/0x20 [ 427.533975][ T12] SOFTIRQ-ON-W at: [ 427.534040][ T12] __lock_acquire+0x378/0xc10 [ 427.534149][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.534294][ T12] _raw_spin_lock+0x33/0x40 [ 427.534408][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.534509][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 427.534653][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 427.534755][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 427.534858][ T12] addrconf_notify+0x2c8/0xf30 [ 427.534963][ T12] notifier_call_chain+0xb0/0x320 [ 427.535112][ T12] netif_close_many+0x2c9/0x640 [ 427.535214][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 427.535343][ T12] default_device_exit_batch+0x38b/0x600 [ 427.535510][ T12] ops_undo_list+0x2ce/0x8f0 [ 427.535612][ T12] cleanup_net+0x431/0x940 [ 427.535718][ T12] process_one_work+0xdf8/0x1410 [ 427.535868][ T12] worker_thread+0x4f1/0xd60 [ 427.535973][ T12] kthread+0x367/0x460 [ 427.536057][ T12] ret_from_fork+0x474/0x6b0 [ 427.536202][ T12] ret_from_fork_asm+0x11/0x20 [ 427.536303][ T12] INITIAL USE at: [ 427.536364][ T12] __lock_acquire+0x378/0xc10 [ 427.536466][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.536610][ T12] _raw_spin_lock+0x33/0x40 [ 427.536710][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 427.536832][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 427.536987][ T12] addrconf_join_anycast+0x1bc/0x260 [ 427.537087][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 427.537189][ T12] addrconf_dad_completed+0x14b/0xe10 [ 427.537332][ T12] addrconf_dad_work+0x3c1/0x930 [ 427.537435][ T12] process_one_work+0xdf8/0x1410 [ 427.537541][ T12] worker_thread+0x4f1/0xd60 [ 427.537687][ T12] kthread+0x367/0x460 [ 427.537773][ T12] ret_from_fork+0x474/0x6b0 [ 427.537879][ T12] ret_from_fork_asm+0x11/0x20 [ 427.538029][ T12] } [ 427.538070][ T12] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 427.538192][ T12] ... acquired at: [ 427.538252][ T12] mark_lock+0x1d7/0xa00 [ 427.538333][ T12] mark_usage+0x105/0x170 [ 427.538456][ T12] __lock_acquire+0x378/0xc10 [ 427.538535][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.538618][ T12] _raw_spin_lock+0x33/0x40 [ 427.538701][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.538824][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 427.538910][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 427.538991][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 427.539072][ T12] addrconf_notify+0x2c8/0xf30 [ 427.539203][ T12] notifier_call_chain+0xb0/0x320 [ 427.539288][ T12] netif_close_many+0x2c9/0x640 [ 427.539373][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 427.539516][ T12] default_device_exit_batch+0x38b/0x600 [ 427.539625][ T12] ops_undo_list+0x2ce/0x8f0 [ 427.539706][ T12] cleanup_net+0x431/0x940 [ 427.539786][ T12] process_one_work+0xdf8/0x1410 [ 427.539915][ T12] worker_thread+0x4f1/0xd60 [ 427.539998][ T12] kthread+0x367/0x460 [ 427.540059][ T12] ret_from_fork+0x474/0x6b0 [ 427.540139][ T12] ret_from_fork_asm+0x11/0x20 [ 427.540263][ T12] [ 427.540304][ T12] [ 427.540304][ T12] stack backtrace: [ 427.540407][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 427.540410][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 427.540411][ T12] Workqueue: netns cleanup_net [ 427.540415][ T12] Call Trace: [ 427.540416][ T12] [ 427.540418][ T12] dump_stack_lvl+0x6f/0xa0 [ 427.540421][ T12] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 427.540424][ T12] mark_lock_irq+0x989/0x9c0 [ 427.540427][ T12] mark_lock+0x1d7/0xa00 [ 427.540428][ T12] mark_usage+0x105/0x170 [ 427.540430][ T12] __lock_acquire+0x378/0xc10 [ 427.540432][ T12] lock_acquire.part.0+0xbc/0x260 [ 427.540434][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.540436][ T12] ? rcu_is_watching+0x15/0xd0 [ 427.540439][ T12] ? do_raw_read_unlock+0x70/0x70 [ 427.540441][ T12] ? lock_acquire+0x134/0x160 [ 427.540442][ T12] _raw_spin_lock+0x33/0x40 [ 427.540444][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.540445][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 427.540447][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 427.540449][ T12] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 427.540451][ T12] ? __ipv6_isatap_ifid+0x210/0x210 [ 427.540453][ T12] ? nlmsg_notify+0x62/0x250 [ 427.540455][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 427.540457][ T12] ? cleanup_prefix_route+0x550/0x550 [ 427.540459][ T12] ? find_held_lock+0x2b/0x80 [ 427.540461][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 427.540462][ T12] ? __rwlock_init+0x150/0x150 [ 427.540464][ T12] ? mark_held_locks+0x40/0x70 [ 427.540466][ T12] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 427.540468][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 427.540469][ T12] ? __timer_delete_sync+0xdb/0x130 [ 427.540472][ T12] ? addrconf_dad_run+0x1b0/0x1b0 [ 427.540474][ T12] ? netkit_xmit+0x14c0/0x14c0 [ 427.540478][ T12] ? mark_held_locks+0x40/0x70 [ 427.540479][ T12] addrconf_notify+0x2c8/0xf30 [ 427.540481][ T12] ? team_port_get_rtnl+0x65/0xc0 [ 427.540483][ T12] notifier_call_chain+0xb0/0x320 [ 427.540486][ T12] netif_close_many+0x2c9/0x640 [ 427.540487][ T12] ? lock_acquire+0x134/0x160 [ 427.540489][ T12] ? rcu_is_watching+0x15/0xd0 [ 427.540490][ T12] ? rcu_is_watching+0x15/0xd0 [ 427.540492][ T12] ? __dev_close_many+0x670/0x670 [ 427.540494][ T12] ? netif_close_many_and_unlock+0x22/0x2c0 [ 427.540496][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 427.540498][ T12] ? mutex_is_locked+0x1c/0x50 [ 427.540500][ T12] ? unregister_netdevice_queued+0x80/0x80 [ 427.540502][ T12] ? mutex_is_locked+0x1c/0x50 [ 427.540504][ T12] ? rtnl_is_locked+0x15/0x20 [ 427.540506][ T12] ? unregister_netdevice_queue+0x6a/0x470 [ 427.540507][ T12] ? unregister_netdevice_many+0x20/0x20 [ 427.540509][ T12] default_device_exit_batch+0x38b/0x600 [ 427.540511][ T12] ? unregister_netdev+0x60/0x60 [ 427.540512][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0 [ 427.540515][ T12] ? fou_exit_net+0x30/0x110 [ 427.540519][ T12] ops_undo_list+0x2ce/0x8f0 [ 427.540520][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 427.540522][ T12] ? netns_install+0x2a0/0x2a0 [ 427.540524][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 427.540525][ T12] ? idr_destroy+0x121/0x250 [ 427.540528][ T12] cleanup_net+0x431/0x940 [ 427.540530][ T12] ? net_passive_dec+0x1c0/0x1c0 [ 427.540532][ T12] ? process_one_work+0xdb7/0x1410 [ 427.540534][ T12] ? lock_acquire+0x134/0x160 [ 427.540535][ T12] ? rcu_is_watching+0x15/0xd0 [ 427.540537][ T12] process_one_work+0xdf8/0x1410 [ 427.540540][ T12] ? pwq_dec_nr_in_flight+0x710/0x710 [ 427.540542][ T12] ? lock_acquire.part.0+0xbc/0x260 [ 427.540544][ T12] worker_thread+0x4f1/0xd60 [ 427.540547][ T12] ? rescuer_thread+0x1320/0x1320 [ 427.540549][ T12] kthread+0x367/0x460 [ 427.540550][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 427.540554][ T12] ? kthread_affine_node+0x330/0x330 [ 427.540555][ T12] ret_from_fork+0x474/0x6b0 [ 427.540557][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 427.540559][ T12] ? __switch_to+0x5a3/0xe00 [ 427.540562][ T12] ? kthread_affine_node+0x330/0x330 [ 427.540563][ T12] ret_from_fork_asm+0x11/0x20 [ 427.540567][ T12]