[ 8.843523][ T201] ip (201) used greatest stack depth: 24528 bytes left [ 9.270566][ T222] ip (222) used greatest stack depth: 23720 bytes left [ 9.752157][ T237] veth0: renamed from ioam-veth-alpha [ 9.780259][ T238] veth0: renamed from ioam-veth-betaL [ 9.802886][ T239] veth1: renamed from ioam-veth-betaR [ 9.856098][ T240] veth0: renamed from ioam-veth-gamma [ 106.857341][ T12] [ 106.857429][ T12] ======================================================== [ 106.857553][ T12] WARNING: possible irq lock inversion dependency detected [ 106.857684][ T12] 7.1.0-rc5-virtme #1 Not tainted [ 106.857809][ T12] -------------------------------------------------------- [ 106.857934][ T12] kworker/u16:0/12 just changed the state of lock: [ 106.858037][ T12] ffffffffb75b7438 (acaddr_hash_lock){+.+.}-{3:3}, at: __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.858230][ T12] but this lock was taken by another, SOFTIRQ-safe lock in the past: [ 106.858351][ T12] (&ndev->lock){++--}-{3:3} [ 106.858353][ T12] [ 106.858353][ T12] [ 106.858353][ T12] and interrupts could create inverse lock ordering between them. [ 106.858353][ T12] [ 106.858700][ T12] [ 106.858700][ T12] other info that might help us debug this: [ 106.858861][ T12] Possible interrupt unsafe locking scenario: [ 106.858861][ T12] [ 106.858977][ T12] CPU0 CPU1 [ 106.859060][ T12] ---- ---- [ 106.859141][ T12] lock(acaddr_hash_lock); [ 106.859260][ T12] local_irq_disable(); [ 106.859360][ T12] lock(&ndev->lock); [ 106.859460][ T12] lock(acaddr_hash_lock); [ 106.859607][ T12] [ 106.859667][ T12] lock(&ndev->lock); [ 106.859732][ T12] [ 106.859732][ T12] *** DEADLOCK *** [ 106.859732][ T12] [ 106.859845][ T12] 4 locks held by kworker/u16:0/12: [ 106.859965][ T12] #0: ff110000019e9d40 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410 [ 106.860140][ T12] #1: ffa00000000c7d10 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410 [ 106.860325][ T12] #2: ffffffffb7498268 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbf/0x940 [ 106.860476][ T12] #3: ffffffffb74b4040 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x9a/0x600 [ 106.860643][ T12] [ 106.860643][ T12] the shortest dependencies between 2nd lock and 1st lock: [ 106.860779][ T12] -> (&ndev->lock){++--}-{3:3} { [ 106.860864][ T12] HARDIRQ-ON-W at: [ 106.860932][ T12] __lock_acquire+0x378/0xc10 [ 106.861039][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.861142][ T12] _raw_write_lock_bh+0x38/0x50 [ 106.861241][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 106.861361][ T12] addrconf_notify+0x151/0xf30 [ 106.861462][ T12] notifier_call_chain+0xb0/0x320 [ 106.861566][ T12] __dev_notify_flags+0xde/0x280 [ 106.861663][ T12] netif_change_flags+0xfe/0x190 [ 106.861763][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 106.861865][ T12] rtnl_newlink+0x8d1/0xee0 [ 106.861969][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 106.862072][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 106.862177][ T12] netlink_unicast+0x486/0x750 [ 106.862276][ T12] netlink_sendmsg+0x735/0xc60 [ 106.862374][ T12] ____sys_sendmsg+0x419/0x850 [ 106.862475][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 106.862579][ T12] __sys_sendmsg+0x145/0x1f0 [ 106.862677][ T12] do_syscall_64+0x117/0x590 [ 106.862777][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 106.862897][ T12] HARDIRQ-ON-R at: [ 106.862957][ T12] __lock_acquire+0x378/0xc10 [ 106.863057][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.863159][ T12] _raw_read_lock_bh+0x44/0x80 [ 106.863260][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 106.863384][ T12] inet6_fill_link_af+0x5c/0xe0 [ 106.863484][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 106.863651][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 106.863773][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 106.863893][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 106.864037][ T12] register_netdevice+0x1526/0x1bc0 [ 106.864138][ T12] register_netdev+0x23/0x40 [ 106.864244][ T12] vti6_init_net+0x280/0x3c0 [ 106.864391][ T12] ops_init+0x187/0x560 [ 106.864490][ T12] register_pernet_operations+0x395/0x8e0 [ 106.864615][ T12] register_pernet_device+0x2c/0x60 [ 106.864754][ T12] vti6_tunnel_init+0x17/0x100 [ 106.864855][ T12] do_one_initcall+0x12b/0x520 [ 106.864958][ T12] kernel_init_freeable+0x596/0x630 [ 106.865101][ T12] kernel_init+0x1e/0x170 [ 106.865206][ T12] ret_from_fork+0x474/0x6b0 [ 106.865308][ T12] ret_from_fork_asm+0x11/0x20 [ 106.865407][ T12] IN-SOFTIRQ-W at: [ 106.865513][ T12] __lock_acquire+0x378/0xc10 [ 106.865617][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.865714][ T12] _raw_write_lock+0x33/0x40 [ 106.865854][ T12] addrconf_rs_timer+0xb0/0x770 [ 106.865956][ T12] call_timer_fn+0x163/0x4f0 [ 106.866063][ T12] __run_timers+0x68f/0xab0 [ 106.866210][ T12] run_timer_softirq+0xf0/0x160 [ 106.866313][ T12] handle_softirqs+0x1d8/0x940 [ 106.866413][ T12] __irq_exit_rcu+0x103/0x1c0 [ 106.866516][ T12] irq_exit_rcu+0xe/0x30 [ 106.866661][ T12] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 106.866787][ T12] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 106.866957][ T12] pv_native_safe_halt+0xf/0x10 [ 106.867060][ T12] default_idle+0x9/0x10 [ 106.867162][ T12] default_idle_call+0x6e/0xb0 [ 106.867264][ T12] cpuidle_idle_call.constprop.0+0x237/0x410 [ 106.867423][ T12] do_idle+0xf5/0x160 [ 106.867524][ T12] cpu_startup_entry+0x53/0x70 [ 106.867624][ T12] start_secondary+0x204/0x2b0 [ 106.867765][ T12] common_startup_64+0x13e/0x148 [ 106.867868][ T12] IN-SOFTIRQ-R at: [ 106.867928][ T12] __lock_acquire+0x378/0xc10 [ 106.868069][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.868172][ T12] _raw_read_lock_bh+0x44/0x80 [ 106.868274][ T12] ipv6_get_lladdr+0xa8/0x3f0 [ 106.868374][ T12] ndisc_send_ns+0xf3/0x120 [ 106.868473][ T12] ndisc_solicit+0x314/0x480 [ 106.868576][ T12] neigh_probe+0xb3/0x100 [ 106.868678][ T12] __neigh_event_send+0x802/0x1070 [ 106.868822][ T12] neigh_resolve_output+0xbe/0x140 [ 106.868924][ T12] ip6_finish_output2+0x488/0x1310 [ 106.869030][ T12] ip6_finish_output+0x701/0xe80 [ 106.869174][ T12] ip6_output+0x23f/0x7f0 [ 106.869279][ T12] ip6_forward+0x1165/0x2d40 [ 106.869377][ T12] ipv6_rcv+0x3c1/0x5a0 [ 106.869517][ T12] __netif_receive_skb_one_core+0xfc/0x180 [ 106.869637][ T12] process_backlog+0x2bc/0x1490 [ 106.869736][ T12] __napi_poll+0xa7/0x3b0 [ 106.869877][ T12] net_rx_action+0x513/0xf50 [ 106.869976][ T12] handle_softirqs+0x1d8/0x940 [ 106.870083][ T12] run_ksoftirqd+0x39/0x60 [ 106.870223][ T12] smpboot_thread_fn+0x2fb/0x9b0 [ 106.870323][ T12] kthread+0x367/0x460 [ 106.870424][ T12] ret_from_fork+0x474/0x6b0 [ 106.870571][ T12] ret_from_fork_asm+0x11/0x20 [ 106.870671][ T12] INITIAL USE at: [ 106.870735][ T12] __lock_acquire+0x378/0xc10 [ 106.870839][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.870978][ T12] _raw_write_lock_bh+0x38/0x50 [ 106.871082][ T12] addrconf_permanent_addr+0x108/0x9c0 [ 106.871203][ T12] addrconf_notify+0x151/0xf30 [ 106.871344][ T12] notifier_call_chain+0xb0/0x320 [ 106.871443][ T12] __dev_notify_flags+0xde/0x280 [ 106.871543][ T12] netif_change_flags+0xfe/0x190 [ 106.871691][ T12] do_setlink.isra.0+0x1d25/0x2a60 [ 106.871791][ T12] rtnl_newlink+0x8d1/0xee0 [ 106.871890][ T12] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 106.872030][ T12] netlink_rcv_skb+0x14e/0x3a0 [ 106.872134][ T12] netlink_unicast+0x486/0x750 [ 106.872234][ T12] netlink_sendmsg+0x735/0xc60 [ 106.872333][ T12] ____sys_sendmsg+0x419/0x850 [ 106.872433][ T12] ___sys_sendmsg+0x14e/0x1d0 [ 106.872537][ T12] __sys_sendmsg+0x145/0x1f0 [ 106.872644][ T12] do_syscall_64+0x117/0x590 [ 106.872787][ T12] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 106.872909][ T12] INITIAL READ USE at: [ 106.872992][ T12] __lock_acquire+0x378/0xc10 [ 106.873139][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.873263][ T12] _raw_read_lock_bh+0x44/0x80 [ 106.873367][ T12] inet6_fill_ifla6_attrs+0x1c9c/0x23e0 [ 106.873529][ T12] inet6_fill_link_af+0x5c/0xe0 [ 106.873633][ T12] rtnl_fill_ifinfo.isra.0+0x1a45/0x2cd0 [ 106.873758][ T12] rtmsg_ifinfo_build_skb+0x144/0x250 [ 106.873918][ T12] rtmsg_ifinfo_event.part.0+0x2c/0x130 [ 106.874039][ T12] rtmsg_ifinfo+0x5c/0xb0 [ 106.874142][ T12] register_netdevice+0x1526/0x1bc0 [ 106.874311][ T12] register_netdev+0x23/0x40 [ 106.874414][ T12] vti6_init_net+0x280/0x3c0 [ 106.874517][ T12] ops_init+0x187/0x560 [ 106.874665][ T12] register_pernet_operations+0x395/0x8e0 [ 106.874784][ T12] register_pernet_device+0x2c/0x60 [ 106.874944][ T12] vti6_tunnel_init+0x17/0x100 [ 106.875049][ T12] do_one_initcall+0x12b/0x520 [ 106.875152][ T12] kernel_init_freeable+0x596/0x630 [ 106.875316][ T12] kernel_init+0x1e/0x170 [ 106.875416][ T12] ret_from_fork+0x474/0x6b0 [ 106.875515][ T12] ret_from_fork_asm+0x11/0x20 [ 106.875622][ T12] } [ 106.875706][ T12] ... key at: [] __key.37+0x0/0x40 [ 106.875826][ T12] ... acquired at: [ 106.875886][ T12] __lock_acquire+0x508/0xc10 [ 106.875965][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.876086][ T12] _raw_spin_lock+0x33/0x40 [ 106.876164][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 106.876264][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 106.876346][ T12] addrconf_join_anycast+0x1bc/0x260 [ 106.876426][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 106.876509][ T12] addrconf_dad_completed+0x14b/0xe10 [ 106.876593][ T12] addrconf_dad_work+0x3c1/0x930 [ 106.876674][ T12] process_one_work+0xdf8/0x1410 [ 106.876798][ T12] worker_thread+0x4f1/0xd60 [ 106.876882][ T12] kthread+0x367/0x460 [ 106.876942][ T12] ret_from_fork+0x474/0x6b0 [ 106.877023][ T12] ret_from_fork_asm+0x11/0x20 [ 106.877144][ T12] [ 106.877184][ T12] -> (acaddr_hash_lock){+.+.}-{3:3} { [ 106.877269][ T12] HARDIRQ-ON-W at: [ 106.877328][ T12] __lock_acquire+0x378/0xc10 [ 106.877473][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.877580][ T12] _raw_spin_lock+0x33/0x40 [ 106.877680][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 106.877845][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 106.877945][ T12] addrconf_join_anycast+0x1bc/0x260 [ 106.878046][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 106.878145][ T12] addrconf_dad_completed+0x14b/0xe10 [ 106.878289][ T12] addrconf_dad_work+0x3c1/0x930 [ 106.878388][ T12] process_one_work+0xdf8/0x1410 [ 106.878491][ T12] worker_thread+0x4f1/0xd60 [ 106.878640][ T12] kthread+0x367/0x460 [ 106.878720][ T12] ret_from_fork+0x474/0x6b0 [ 106.878819][ T12] ret_from_fork_asm+0x11/0x20 [ 106.878966][ T12] SOFTIRQ-ON-W at: [ 106.879025][ T12] __lock_acquire+0x378/0xc10 [ 106.879125][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.879229][ T12] _raw_spin_lock+0x33/0x40 [ 106.879373][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.879472][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 106.879576][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 106.879723][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 106.879823][ T12] addrconf_notify+0x2c8/0xf30 [ 106.879925][ T12] notifier_call_chain+0xb0/0x320 [ 106.880067][ T12] netif_close_many+0x2c9/0x640 [ 106.880173][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 106.880300][ T12] default_device_exit_batch+0x38b/0x600 [ 106.880419][ T12] ops_undo_list+0x2ce/0x8f0 [ 106.880523][ T12] cleanup_net+0x431/0x940 [ 106.880627][ T12] process_one_work+0xdf8/0x1410 [ 106.880769][ T12] worker_thread+0x4f1/0xd60 [ 106.880869][ T12] kthread+0x367/0x460 [ 106.880949][ T12] ret_from_fork+0x474/0x6b0 [ 106.881048][ T12] ret_from_fork_asm+0x11/0x20 [ 106.881192][ T12] INITIAL USE at: [ 106.881251][ T12] __lock_acquire+0x378/0xc10 [ 106.881349][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.881496][ T12] _raw_spin_lock+0x33/0x40 [ 106.881600][ T12] ipv6_add_acaddr_hash.isra.0+0x16d/0x350 [ 106.881723][ T12] __ipv6_dev_ac_inc+0x57e/0x930 [ 106.881864][ T12] addrconf_join_anycast+0x1bc/0x260 [ 106.881967][ T12] __ipv6_ifa_notify+0x75b/0xad0 [ 106.882070][ T12] addrconf_dad_completed+0x14b/0xe10 [ 106.882213][ T12] addrconf_dad_work+0x3c1/0x930 [ 106.882312][ T12] process_one_work+0xdf8/0x1410 [ 106.882410][ T12] worker_thread+0x4f1/0xd60 [ 106.882512][ T12] kthread+0x367/0x460 [ 106.882639][ T12] ret_from_fork+0x474/0x6b0 [ 106.882739][ T12] ret_from_fork_asm+0x11/0x20 [ 106.882837][ T12] } [ 106.882877][ T12] ... key at: [] acaddr_hash_lock+0x18/0x45a0 [ 106.883040][ T12] ... acquired at: [ 106.883098][ T12] mark_lock+0x1d7/0xa00 [ 106.883176][ T12] mark_usage+0x105/0x170 [ 106.883295][ T12] __lock_acquire+0x378/0xc10 [ 106.883378][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.883460][ T12] _raw_spin_lock+0x33/0x40 [ 106.883538][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.883664][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 106.883742][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 106.883821][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 106.883905][ T12] addrconf_notify+0x2c8/0xf30 [ 106.884025][ T12] notifier_call_chain+0xb0/0x320 [ 106.884107][ T12] netif_close_many+0x2c9/0x640 [ 106.884185][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 106.884281][ T12] default_device_exit_batch+0x38b/0x600 [ 106.884420][ T12] ops_undo_list+0x2ce/0x8f0 [ 106.884498][ T12] cleanup_net+0x431/0x940 [ 106.884580][ T12] process_one_work+0xdf8/0x1410 [ 106.884661][ T12] worker_thread+0x4f1/0xd60 [ 106.884782][ T12] kthread+0x367/0x460 [ 106.884845][ T12] ret_from_fork+0x474/0x6b0 [ 106.884926][ T12] ret_from_fork_asm+0x11/0x20 [ 106.885008][ T12] [ 106.885047][ T12] [ 106.885047][ T12] stack backtrace: [ 106.885193][ T12] CPU: 1 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 106.885196][ T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 106.885198][ T12] Workqueue: netns cleanup_net [ 106.885201][ T12] Call Trace: [ 106.885203][ T12] [ 106.885205][ T12] dump_stack_lvl+0x6f/0xa0 [ 106.885207][ T12] print_irq_inversion_bug.part.0.cold+0xe6/0x143 [ 106.885211][ T12] mark_lock_irq+0x989/0x9c0 [ 106.885213][ T12] mark_lock+0x1d7/0xa00 [ 106.885215][ T12] mark_usage+0x105/0x170 [ 106.885216][ T12] __lock_acquire+0x378/0xc10 [ 106.885219][ T12] lock_acquire.part.0+0xbc/0x260 [ 106.885220][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.885222][ T12] ? rcu_is_watching+0x15/0xd0 [ 106.885225][ T12] ? do_raw_read_unlock+0x70/0x70 [ 106.885227][ T12] ? lock_acquire+0x134/0x160 [ 106.885228][ T12] _raw_spin_lock+0x33/0x40 [ 106.885230][ T12] ? __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.885231][ T12] __ipv6_dev_ac_dec+0x236/0x5d0 [ 106.885233][ T12] addrconf_leave_anycast+0x1bc/0x260 [ 106.885235][ T12] ? inet6_dump_ifinfo+0x6e0/0x6e0 [ 106.885237][ T12] ? __ipv6_isatap_ifid+0x210/0x210 [ 106.885239][ T12] ? nlmsg_notify+0x62/0x250 [ 106.885241][ T12] __ipv6_ifa_notify+0x6b4/0xad0 [ 106.885243][ T12] ? cleanup_prefix_route+0x550/0x550 [ 106.885245][ T12] ? find_held_lock+0x2b/0x80 [ 106.885246][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 106.885248][ T12] ? __rwlock_init+0x150/0x150 [ 106.885249][ T12] ? mark_held_locks+0x40/0x70 [ 106.885251][ T12] ? addrconf_ifdown.isra.0+0xa70/0x15f0 [ 106.885253][ T12] addrconf_ifdown.isra.0+0xa70/0x15f0 [ 106.885255][ T12] ? __timer_delete_sync+0xdb/0x130 [ 106.885258][ T12] ? addrconf_dad_run+0x1b0/0x1b0 [ 106.885260][ T12] ? netkit_xmit+0x14c0/0x14c0 [ 106.885263][ T12] ? mark_held_locks+0x40/0x70 [ 106.885265][ T12] addrconf_notify+0x2c8/0xf30 [ 106.885266][ T12] ? team_port_get_rtnl+0x65/0xc0 [ 106.885269][ T12] notifier_call_chain+0xb0/0x320 [ 106.885271][ T12] netif_close_many+0x2c9/0x640 [ 106.885272][ T12] ? lock_acquire+0x134/0x160 [ 106.885274][ T12] ? rcu_is_watching+0x15/0xd0 [ 106.885275][ T12] ? rcu_is_watching+0x15/0xd0 [ 106.885277][ T12] ? __dev_close_many+0x670/0x670 [ 106.885278][ T12] ? netif_close_many_and_unlock+0x22/0x2c0 [ 106.885281][ T12] unregister_netdevice_many_notify+0x71a/0x1b30 [ 106.885282][ T12] ? mutex_is_locked+0x1c/0x50 [ 106.885285][ T12] ? unregister_netdevice_queued+0x80/0x80 [ 106.885287][ T12] ? mutex_is_locked+0x1c/0x50 [ 106.885288][ T12] ? rtnl_is_locked+0x15/0x20 [ 106.885290][ T12] ? unregister_netdevice_queue+0x6a/0x470 [ 106.885291][ T12] ? unregister_netdevice_many+0x20/0x20 [ 106.885293][ T12] default_device_exit_batch+0x38b/0x600 [ 106.885295][ T12] ? unregister_netdev+0x60/0x60 [ 106.885296][ T12] ? perf_trace_sched_switch+0x7d0/0x7d0 [ 106.885299][ T12] ? fou_exit_net+0x30/0x110 [ 106.885302][ T12] ops_undo_list+0x2ce/0x8f0 [ 106.885304][ T12] ? lockdep_hardirqs_on+0x8c/0x130 [ 106.885306][ T12] ? netns_install+0x2a0/0x2a0 [ 106.885307][ T12] ? __lock_release.isra.0+0x6b/0x1a0 [ 106.885309][ T12] ? idr_destroy+0x121/0x250 [ 106.885312][ T12] cleanup_net+0x431/0x940 [ 106.885313][ T12] ? net_passive_dec+0x1c0/0x1c0 [ 106.885315][ T12] ? process_one_work+0xdb7/0x1410 [ 106.885317][ T12] ? lock_acquire+0x134/0x160 [ 106.885318][ T12] ? rcu_is_watching+0x15/0xd0 [ 106.885320][ T12] process_one_work+0xdf8/0x1410 [ 106.885323][ T12] ? pwq_dec_nr_in_flight+0x710/0x710 [ 106.885324][ T12] ? lock_acquire.part.0+0xbc/0x260 [ 106.885327][ T12] worker_thread+0x4f1/0xd60 [ 106.885330][ T12] ? rescuer_thread+0x1320/0x1320 [ 106.885331][ T12] kthread+0x367/0x460 [ 106.885333][ T12] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 106.885336][ T12] ? kthread_affine_node+0x330/0x330 [ 106.885338][ T12] ret_from_fork+0x474/0x6b0 [ 106.885339][ T12] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120 [ 106.885341][ T12] ? __switch_to+0x5a3/0xe00 [ 106.885343][ T12] ? kthread_affine_node+0x330/0x330 [ 106.885345][ T12] ret_from_fork_asm+0x11/0x20 [ 106.885348][ T12]