[ 455.394661][T16898] sctp: Hash tables configured (bind 32/56) [ 475.993008][ C3] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 476.493573][ C1] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 476.606162][ C3] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 477.598500][ C0] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 477.981469][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 478.045684][ C2] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 478.322630][ C3] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 478.712452][ C0] TCP: request_sock_TCP: Possible SYN flooding on port 127.0.0.1:23456. Sending cookies. [ 538.587127][ T12] [ 538.587246][ T12] ======================================================== [ 538.587447][ T12] WARNING: possible irq lock inversion dependency detected [ 538.587630][ T12] 7.1.0-rc5-virtme #1 Not tainted [ 538.587753][ T12] -------------------------------------------------------- [ 538.587936][ T12] kworker/u16:0/12 just changed the state of lock: [ 538.588087][ T12] ffffffff8e984dd8 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.588319][ T12] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 538.588510][ T12] (&ndev->lock){++--}-{3:3} [ 538.588514][ T12] [ 538.588514][ T12] [ 538.588514][ T12] and interrupts could create inverse lock ordering between them. [ 538.588514][ T12] [ 538.588970][ T12] [ 538.588970][ T12] other info that might help us debug this: [ 538.589151][ T12] Possible interrupt unsafe locking scenario: [ 538.589151][ T12] [ 538.589333][ T12] CPU0 CPU1 [ 538.589455][ T12] ---- ---- [ 538.589577][ T12] lock(acaddr_hash_lock); [ 538.589705][ T12] local_irq_disable(); [ 538.589860][ T12] lock(&ndev->lock); [ 538.590013][ T12] lock(acaddr_hash_lock); [ 538.590168][ T12] [ 538.590259][ T12] lock(&ndev->lock); [ 538.590364][ T12] [ 538.590364][ T12] *** DEADLOCK *** [ 538.590364][ T12] [ 538.590548][ T12] 4 locks held by kworker/u16:0/12: [ 538.590672][ T12] #0: ff110000019d1d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410 [ 538.590920][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410 [ 538.591137][ T12] #2: ffffffff8e87abe8 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x890 [ 538.591361][ T12] #3: ffffffff8e896a00 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 538.591606][ T12] [ 538.591606][ T12] the shortest dependencies between 2nd lock and 1st lock: [ 538.591809][ T12] -> (&ndev->lock){++--}-{3:3} { [ 538.591937][ T12] HARDIRQ-ON-W at: [ 538.592033][ T12] __lock_acquire+0x378/0xc10 [ 538.592195][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.592359][ T12] _raw_write_lock_bh+0x38/0x50 [ 538.592523][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 538.592720][ T12] addrconf_notify+0x151/0xf30 [ 538.592875][ T12] notifier_call_chain+0xb0/0x320 [ 538.593032][ T12] __dev_notify_flags+0xde/0x280 [ 538.593193][ T12] netif_change_flags+0xfe/0x190 [ 538.593359][ T12] do_setlink.isra.0+0x1cc3/0x2750 [ 538.593515][ T12] rtnl_newlink+0x8d1/0xef0 [ 538.593672][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 538.593832][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 538.593991][ T12] netlink_unicast+0x486/0x750 [ 538.594154][ T12] netlink_sendmsg+0x735/0xc60 [ 538.594325][ T12] ____sys_sendmsg+0x419/0x850 [ 538.594484][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 538.594639][ T12] __sys_sendmsg+0x145/0x1f0 [ 538.594796][ T12] do_syscall_64+0xf3/0x650 [ 538.594958][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.595144][ T12] HARDIRQ-ON-R at: [ 538.595238][ T12] __lock_acquire+0x378/0xc10 [ 538.595400][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.595640][ T12] _raw_read_lock_bh+0x44/0x80 [ 538.595803][ T12] inet6_fill_ifla6_attrs+0x1a72/0x2140 [ 538.595992][ T12] inet6_fill_link_af+0x5c/0xe0 [ 538.596147][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 538.596342][ T12] rtnl_getlink+0x9c9/0xeb0 [ 538.596578][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 538.596739][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 538.596895][ T12] netlink_unicast+0x486/0x750 [ 538.597052][ T12] netlink_sendmsg+0x735/0xc60 [ 538.597291][ T12] ____sys_sendmsg+0x419/0x850 [ 538.597449][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 538.597608][ T12] __sys_sendmsg+0x145/0x1f0 [ 538.597768][ T12] do_syscall_64+0xf3/0x650 [ 538.597927][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.598115][ T12] IN-SOFTIRQ-W at: [ 538.598209][ T12] __lock_acquire+0x378/0xc10 [ 538.598371][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.598527][ T12] _raw_write_lock+0x33/0x40 [ 538.598683][ T12] addrconf_rs_timer+0xb0/0x770 [ 538.598926][ T12] call_timer_fn+0x163/0x4f0 [ 538.599084][ T12] __run_timers+0x68f/0xab0 [ 538.599238][ T12] run_timer_softirq+0xf0/0x160 [ 538.599402][ T12] handle_softirqs+0x1d8/0x940 [ 538.599559][ T12] __irq_exit_rcu+0x103/0x1c0 [ 538.599792][ T12] irq_exit_rcu+0xe/0x30 [ 538.599951][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 538.600141][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 538.600340][ T12] pv_native_safe_halt+0xf/0x10 [ 538.600499][ T12] default_idle+0x9/0x10 [ 538.600731][ T12] default_idle_call+0x6e/0xb0 [ 538.600894][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 538.601082][ T12] do_idle+0xf5/0x160 [ 538.601237][ T12] cpu_startup_entry+0x53/0x70 [ 538.601400][ T12] start_secondary+0x204/0x2b0 [ 538.601557][ T12] common_startup_64+0x13e/0x148 [ 538.601719][ T12] IN-SOFTIRQ-R at: [ 538.601814][ T12] __lock_acquire+0x378/0xc10 [ 538.601973][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.602203][ T12] _raw_read_lock_bh+0x44/0x80 [ 538.602367][ T12] ipv6_get_lladdr+0xa8/0x3f0 [ 538.602598][ T12] addrconf_rs_timer+0x251/0x770 [ 538.602757][ T12] call_timer_fn+0x163/0x4f0 [ 538.602917][ T12] __run_timers+0x68f/0xab0 [ 538.603070][ T12] run_timer_softirq+0xf0/0x160 [ 538.603300][ T12] handle_softirqs+0x1d8/0x940 [ 538.603454][ T12] __irq_exit_rcu+0x103/0x1c0 [ 538.603682][ T12] irq_exit_rcu+0xe/0x30 [ 538.603834][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 538.604012][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 538.604276][ T12] pv_native_safe_halt+0xf/0x10 [ 538.604427][ T12] default_idle+0x9/0x10 [ 538.604582][ T12] default_idle_call+0x6e/0xb0 [ 538.604882][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 538.605066][ T12] do_idle+0xf5/0x160 [ 538.605219][ T12] cpu_startup_entry+0x53/0x70 [ 538.605375][ T12] start_secondary+0x204/0x2b0 [ 538.605600][ T12] common_startup_64+0x13e/0x148 [ 538.605826][ T12] INITIAL USE at: [ 538.605921][ T12] __lock_acquire+0x378/0xc10 [ 538.606083][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.606234][ T12] _raw_write_lock_bh+0x38/0x50 [ 538.606465][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 538.606645][ T12] addrconf_notify+0x151/0xf30 [ 538.606872][ T12] notifier_call_chain+0xb0/0x320 [ 538.607024][ T12] __dev_notify_flags+0xde/0x280 [ 538.607175][ T12] netif_change_flags+0xfe/0x190 [ 538.607335][ T12] do_setlink.isra.0+0x1cc3/0x2750 [ 538.607489][ T12] rtnl_newlink+0x8d1/0xef0 [ 538.607955][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 538.608114][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 538.608277][ T12] netlink_unicast+0x486/0x750 [ 538.608812][ T12] netlink_sendmsg+0x735/0xc60 [ 538.608970][ T12] ____sys_sendmsg+0x419/0x850 [ 538.609127][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 538.609367][ T12] __sys_sendmsg+0x145/0x1f0 [ 538.609525][ T12] do_syscall_64+0xf3/0x650 [ 538.609680][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.609951][ T12] INITIAL READ USE at: [ 538.610080][ T12] __lock_acquire+0x378/0xc10 [ 538.610249][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.610449][ T12] _raw_read_lock_bh+0x44/0x80 [ 538.610686][ T12] inet6_fill_ifla6_attrs+0x1a72/0x2140 [ 538.610880][ T12] inet6_fill_link_af+0x5c/0xe0 [ 538.611045][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2c20 [ 538.611240][ T12] rtnl_getlink+0x9c9/0xeb0 [ 538.611405][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 538.611564][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 538.611725][ T12] netlink_unicast+0x486/0x750 [ 538.611886][ T12] netlink_sendmsg+0x735/0xc60 [ 538.612048][ T12] ____sys_sendmsg+0x419/0x850 [ 538.612207][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 538.612371][ T12] __sys_sendmsg+0x145/0x1f0 [ 538.612528][ T12] do_syscall_64+0xf3/0x650 [ 538.612688][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.612883][ T12] } [ 538.612951][ T12] ... key at: [] __key.37+0x0/0x40 [ 538.613143][ T12] ... acquired at: [ 538.613240][ T12] __lock_acquire+0x508/0xc10 [ 538.613375][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.613499][ T12] _raw_spin_lock+0x33/0x40 [ 538.613710][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 538.613865][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 538.613990][ T12] addrconf_join_anycast+0x1bc/0x260 [ 538.614114][ T12] dev_forward_change+0x2be/0x850 [ 538.614242][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 538.614404][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 538.614532][ T12] proc_sys_call_handler+0x31b/0x480 [ 538.614657][ T12] new_sync_write+0x333/0x750 [ 538.614785][ T12] vfs_write+0x6a4/0xc10 [ 538.614912][ T12] ksys_write+0x116/0x250 [ 538.615039][ T12] do_syscall_64+0xf3/0x650 [ 538.615163][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.615325][ T12] [ 538.615389][ T12] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 538.615523][ T12] HARDIRQ-ON-W at: [ 538.615695][ T12] __lock_acquire+0x378/0xc10 [ 538.615858][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.616093][ T12] _raw_spin_lock+0x33/0x40 [ 538.616333][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 538.616528][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 538.616847][ T12] addrconf_join_anycast+0x1bc/0x260 [ 538.617006][ T12] dev_forward_change+0x2be/0x850 [ 538.617166][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 538.617362][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 538.617524][ T12] proc_sys_call_handler+0x31b/0x480 [ 538.617682][ T12] new_sync_write+0x333/0x750 [ 538.617841][ T12] vfs_write+0x6a4/0xc10 [ 538.618000][ T12] ksys_write+0x116/0x250 [ 538.618151][ T12] do_syscall_64+0xf3/0x650 [ 538.618310][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.618494][ T12] SOFTIRQ-ON-W at: [ 538.618586][ T12] __lock_acquire+0x378/0xc10 [ 538.618809][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.619112][ T12] _raw_spin_lock+0x33/0x40 [ 538.619275][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.619433][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 538.619589][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 538.619746][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 538.619903][ T12] addrconf_notify+0x2c8/0xf30 [ 538.620066][ T12] notifier_call_chain+0xb0/0x320 [ 538.620226][ T12] netif_close_many+0x2c9/0x640 [ 538.620386][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 538.620595][ T12] default_device_exit_batch+0x38b/0x600 [ 538.620727][ T12] ops_undo_list+0x2ce/0x8f0 [ 538.620837][ T12] cleanup_net+0x431/0x890 [ 538.620949][ T12] process_one_work+0xdf8/0x1410 [ 538.621058][ T12] worker_thread+0x4f1/0xd60 [ 538.621167][ T12] kthread+0x367/0x460 [ 538.621255][ T12] ret_from_fork+0x4a4/0x720 [ 538.621387][ T12] ret_from_fork_asm+0x11/0x20 [ 538.621498][ T12] INITIAL USE at: [ 538.621565][ T12] __lock_acquire+0x378/0xc10 [ 538.621674][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.621785][ T12] _raw_spin_lock+0x33/0x40 [ 538.621894][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 538.622070][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 538.622186][ T12] addrconf_join_anycast+0x1bc/0x260 [ 538.622296][ T12] dev_forward_change+0x2be/0x850 [ 538.622412][ T12] addrconf_fixup_forwarding+0x2af/0x4d0 [ 538.622589][ T12] addrconf_sysctl_forward+0x209/0x2b0 [ 538.622741][ T12] proc_sys_call_handler+0x31b/0x480 [ 538.622853][ T12] new_sync_write+0x333/0x750 [ 538.622961][ T12] vfs_write+0x6a4/0xc10 [ 538.623113][ T12] ksys_write+0x116/0x250 [ 538.623220][ T12] do_syscall_64+0xf3/0x650 [ 538.623336][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 538.623471][ T12] } [ 538.623559][ T12] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 538.623693][ T12] ... acquired at: [ 538.623757][ T12] mark_lock+0x1d7/0xa00 [ 538.623844][ T12] mark_usage+0x105/0x170 [ 538.623934][ T12] __lock_acquire+0x378/0xc10 [ 538.624069][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.624155][ T12] _raw_spin_lock+0x33/0x40 [ 538.624241][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.624339][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 538.624466][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 538.624669][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 538.624796][ T12] addrconf_notify+0x2c8/0xf30 [ 538.624927][ T12] notifier_call_chain+0xb0/0x320 [ 538.625055][ T12] netif_close_many+0x2c9/0x640 [ 538.625180][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 538.625334][ T12] default_device_exit_batch+0x38b/0x600 [ 538.625448][ T12] ops_undo_list+0x2ce/0x8f0 [ 538.625535][ T12] cleanup_net+0x431/0x890 [ 538.625622][ T12] process_one_work+0xdf8/0x1410 [ 538.625711][ T12] worker_thread+0x4f1/0xd60 [ 538.625798][ T12] kthread+0x367/0x460 [ 538.625911][ T12] ret_from_fork+0x4a4/0x720 [ 538.626003][ T12] ret_from_fork_asm+0x11/0x20 [ 538.626090][ T12] [ 538.626134][ T12] [ 538.626134][ T12] stack backtrace: [ 538.626244][ T12] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 538.626248][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 538.626250][ T12] Workqueue: netns cleanup_net [ 538.626253][ T12] Call Trace: [ 538.626254][ T12] [ 538.626256][ T12] dump_stack_lvl+0x6f/0xa0 [ 538.626260][ T12] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 538.626268][ T12] mark_lock_irq+0x989/0x9c0 [ 538.626271][ T12] mark_lock+0x1d7/0xa00 [ 538.626273][ T12] mark_usage+0x105/0x170 [ 538.626274][ T12] __lock_acquire+0x378/0xc10 [ 538.626276][ T12] lock_acquire.part.0+0xbc/0x260 [ 538.626278][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.626280][ T12] ? rcu_is_watching+0x15/0xd0 [ 538.626282][ T12] ? do_raw_read_unlock+0x70/0x70 [ 538.626284][ T12] ? lock_acquire+0x134/0x160 [ 538.626286][ T12] _raw_spin_lock+0x33/0x40 [ 538.626287][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.626289][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 538.626291][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 538.626293][ T12] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 538.626295][ T12] ? __ipv6_isatap_ifid+0x210/0x210 [ 538.626297][ T12] ? nlmsg_notify+0x62/0x250 [ 538.626299][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 538.626301][ T12] ? cleanup_prefix_route+0x550/0x550 [ 538.626303][ T12] ? find_held_lock+0x2b/0x80 [ 538.626306][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 538.626308][ T12] ? __rwlock_init+0x150/0x150 [ 538.626309][ T12] ? mark_held_locks+0x40/0x70 [ 538.626311][ T12] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 538.626313][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 538.626315][ T12] ? __timer_delete_sync+0xdb/0x130 [ 538.626317][ T12] ? addrconf_dad_run+0x1b0/0x1b0 [ 538.626319][ T12] ? neigh_flush_one+0x580/0x580 [ 538.626322][ T12] addrconf_notify+0x2c8/0xf30 [ 538.626324][ T12] ? fib_netdev_event+0x1a9/0x5d0 [ 538.626327][ T12] notifier_call_chain+0xb0/0x320 [ 538.626329][ T12] netif_close_many+0x2c9/0x640 [ 538.626332][ T12] ? __dev_close_many+0x530/0x530 [ 538.626335][ T12] ? netif_close_many_and_unlock+0x22/0x2c0 [ 538.626337][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 538.626340][ T12] ? kasan_quarantine_put+0x13e/0x2b0 [ 538.626342][ T12] unregister_netdevice_many_notify+0x671/0x19a0 [ 538.626344][ T12] ? mutex_is_locked+0x1c/0x50 [ 538.626346][ T12] ? unregister_netdevice_queued+0x80/0x80 [ 538.626348][ T12] ? mutex_is_locked+0x1c/0x50 [ 538.626350][ T12] ? rtnl_is_locked+0x15/0x20 [ 538.626351][ T12] ? unregister_netdevice_queue+0x6a/0x470 [ 538.626353][ T12] ? unregister_netdevice_many+0x20/0x20 [ 538.626356][ T12] default_device_exit_batch+0x38b/0x600 [ 538.626358][ T12] ? generic_xdp_install+0x400/0x400 [ 538.626359][ T12] ? ipmr_free_table+0x12e/0x2a0 [ 538.626362][ T12] ? unregister_netdev+0x60/0x60 [ 538.626363][ T12] ? rtnl_is_locked+0x15/0x20 [ 538.626365][ T12] ? nexthop_net_exit_rtnl+0x1f/0x260 [ 538.626368][ T12] ops_undo_list+0x2ce/0x8f0 [ 538.626370][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 538.626371][ T12] ? rtnl_net_dumpid_one+0x2d0/0x2d0 [ 538.626373][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 538.626374][ T12] ? idr_destroy+0x121/0x250 [ 538.626378][ T12] cleanup_net+0x431/0x890 [ 538.626379][ T12] ? net_passive_dec+0x1c0/0x1c0 [ 538.626381][ T12] ? process_one_work+0xdb7/0x1410 [ 538.626383][ T12] ? lock_acquire+0x134/0x160 [ 538.626384][ T12] ? rcu_is_watching+0x15/0xd0 [ 538.626386][ T12] process_one_work+0xdf8/0x1410 [ 538.626389][ T12] ? pwq_dec_nr_in_flight+0x710/0x710 [ 538.626390][ T12] ? lock_acquire.part.0+0xbc/0x260 [ 538.626393][ T12] worker_thread+0x4f1/0xd60 [ 538.626396][ T12] ? rescuer_thread+0x1320/0x1320 [ 538.626397][ T12] kthread+0x367/0x460 [ 538.626399][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 538.626402][ T12] ? kthread_affine_node+0x330/0x330 [ 538.626404][ T12] ret_from_fork+0x4a4/0x720 [ 538.626405][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 538.626407][ T12] ? __switch_to+0x5a3/0xe00 [ 538.626409][ T12] ? kthread_affine_node+0x330/0x330 [ 538.626411][ T12] ret_from_fork_asm+0x11/0x20 [ 538.626414][ T12]