[ 493.007579][ T56] INFO: task kworker/u24:0:12 blocked for more than 122 seconds.
[ 493.008046][ T56] Not tainted 7.1.0-virtme #1
[ 493.008188][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 493.008415][ T56] task:kworker/u24:0 state:D stack:26784 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 493.008751][ T56] Workqueue: ipv6_addrconf addrconf_verify_work
[ 493.008948][ T56] Call Trace:
[ 493.009051][ T56]
[ 493.009126][ T56] __schedule+0xf8c/0x20e0
[ 493.009272][ T56] ? io_schedule_timeout+0x140/0x140
[ 493.009406][ T56] ? find_held_lock+0x2b/0x80
[ 493.009546][ T56] schedule+0xe7/0x2f0
[ 493.009656][ T56] schedule_preempt_disabled+0x18/0x30
[ 493.009795][ T56] __mutex_lock+0x6a1/0x1f10
[ 493.009928][ T56] ? addrconf_verify_work+0x12/0x30
[ 493.010067][ T56] ? ww_mutex_lock+0x160/0x160
[ 493.010208][ T56] ? __lock_acquire+0x518/0xc20
[ 493.010346][ T56] ? process_one_work+0xdb7/0x1410
[ 493.010483][ T56] ? rcu_is_watching+0x15/0xd0
[ 493.010823][ T56] ? rcu_is_watching+0x15/0xd0
[ 493.010959][ T56] ? addrconf_verify_work+0x12/0x30
[ 493.011086][ T56] addrconf_verify_work+0x12/0x30
[ 493.011218][ T56] process_one_work+0xdf8/0x1410
[ 493.011352][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 493.011480][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 493.011619][ T56] worker_thread+0x4f1/0xd60
[ 493.011755][ T56] ? rescuer_thread+0x1320/0x1320
[ 493.011888][ T56] kthread+0x367/0x460
[ 493.011986][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 493.012249][ T56] ? kthread_affine_node+0x330/0x330
[ 493.012376][ T56] ret_from_fork+0x474/0x6b0
[ 493.012510][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 493.012672][ T56] ? __switch_to+0x5a3/0xe00
[ 493.012801][ T56] ? kthread_affine_node+0x330/0x330
[ 493.012924][ T56] ret_from_fork_asm+0x11/0x20
[ 493.013054][ T56]
[ 493.013168][ T56] INFO: task kworker/u24:0:12 is blocked on a mutex likely owned by task kworker/2:1:67.
[ 493.013388][ T56] INFO: task kworker/2:1:67 blocked for more than 122 seconds.
[ 493.013568][ T56] Not tainted 7.1.0-virtme #1
[ 493.013684][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 493.013880][ T56] task:kworker/2:1 state:D stack:27328 pid:67 tgid:67 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 493.014150][ T56] Workqueue: events fbnic_service_task
[ 493.014276][ T56] Call Trace:
[ 493.014365][ T56]
[ 493.014427][ T56] __schedule+0xf8c/0x20e0
[ 493.014550][ T56] ? io_schedule_timeout+0x140/0x140
[ 493.014677][ T56] ? find_held_lock+0x2b/0x80
[ 493.014803][ T56] schedule+0xe7/0x2f0
[ 493.014893][ T56] schedule_preempt_disabled+0x18/0x30
[ 493.015013][ T56] __mutex_lock+0x6a1/0x1f10
[ 493.015133][ T56] ? fbnic_service_task+0x3ba/0x570
[ 493.015254][ T56] ? ww_mutex_lock+0x160/0x160
[ 493.015375][ T56] ? __lock_release.isra.0+0x6b/0x1a0
[ 493.015495][ T56] ? fbnic_service_task+0x3ba/0x570
[ 493.015620][ T56] fbnic_service_task+0x3ba/0x570
[ 493.015739][ T56] process_one_work+0xdf8/0x1410
[ 493.015860][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 493.015978][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 493.016097][ T56] worker_thread+0x4f1/0xd60
[ 493.016218][ T56] ? rescuer_thread+0x1320/0x1320
[ 493.016335][ T56] ? __kthread_parkme+0xbd/0x210
[ 493.016449][ T56] ? rescuer_thread+0x1320/0x1320
[ 493.016570][ T56] ? rescuer_thread+0x1320/0x1320
[ 493.016688][ T56] kthread+0x367/0x460
[ 493.016782][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 493.016924][ T56] ? kthread_affine_node+0x330/0x330
[ 493.017041][ T56] ret_from_fork+0x474/0x6b0
[ 493.017157][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 493.017300][ T56] ? __switch_to+0x5a3/0xe00
[ 493.017416][ T56] ? kthread_affine_node+0x330/0x330
[ 493.017531][ T56] ret_from_fork_asm+0x11/0x20
[ 493.017655][ T56]
[ 493.017762][ T56] INFO: task kworker/2:1:67 is blocked on a mutex likely owned by task python3:6054.
[ 493.017972][ T56] task:python3 state:D stack:25688 pid:6054 tgid:6054 ppid:6053 task_flags:0x400100 flags:0x00080800
[ 493.018226][ T56] Call Trace:
[ 493.018316][ T56]
[ 493.018382][ T56] __schedule+0xf8c/0x20e0
[ 493.018504][ T56] ? io_schedule_timeout+0x140/0x140
[ 493.018628][ T56] ? find_held_lock+0x2b/0x80
[ 493.018747][ T56] schedule+0xe7/0x2f0
[ 493.018834][ T56] schedule_timeout+0x13f/0x290
[ 493.018948][ T56] ? hrtimer_nanosleep_restart+0x270/0x270
[ 493.019087][ T56] ? rcu_is_watching+0x15/0xd0
[ 493.019200][ T56] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 493.019319][ T56] ? threaded_store+0x132/0x220
[ 493.019434][ T56] ? rcu_is_watching+0x15/0xd0
[ 493.019547][ T56] msleep+0x1b/0x30
[ 493.019638][ T56] napi_set_threaded+0x19d/0x590
[ 493.019752][ T56] ? napi_resume_irqs+0x1a0/0x1a0
[ 493.019865][ T56] ? __mutex_lock+0x9a4/0x1f10
[ 493.019978][ T56] netif_set_threaded+0x361/0x5f0
[ 493.020092][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 493.020224][ T56] ? sysfs_file_ops+0x140/0x140
[ 493.020336][ T56] threaded_store+0x1b8/0x220
[ 493.020449][ T56] ? xps_rxqs_store+0x2e0/0x2e0
[ 493.020566][ T56] ? sysfs_file_ops+0x140/0x140
[ 493.020677][ T56] ? sysfs_file_kobj+0xbd/0x1e0
[ 493.020793][ T56] ? sysfs_kf_write+0x65/0x160
[ 493.020907][ T56] kernfs_fop_write_iter+0x335/0x510
[ 493.021019][ T56] ? kernfs_ops+0xf0/0xf0
[ 493.021104][ T56] new_sync_write+0x33e/0x760
[ 493.021223][ T56] ? __lock_acquire+0x518/0xc20
[ 493.021338][ T56] ? new_sync_read+0x750/0x750
[ 493.021454][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 493.021574][ T56] ? ksys_write+0x116/0x250
[ 493.021725][ T56] vfs_write+0x6a4/0xbe0
[ 493.021811][ T56] ksys_write+0x116/0x250
[ 493.021896][ T56] ? __ia32_sys_read+0xc0/0xc0
[ 493.022006][ T56] ? kernfs_fop_llseek+0x160/0x1f0
[ 493.022116][ T56] ? rcu_is_watching+0x15/0xd0
[ 493.022232][ T56] do_syscall_64+0x117/0x590
[ 493.022344][ T56] ? irq_exit_rcu+0x1a/0x30
[ 493.022456][ T56] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 493.022603][ T56] RIP: 0033:0x7f367376f64e
[ 493.022722][ T56] RSP: 002b:00007ffca3066910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 493.022890][ T56] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f367376f64e
[ 493.023056][ T56] RDX: 0000000000000001 RSI: 0000562c69e5b440 RDI: 0000000000000007
[ 493.023226][ T56] RBP: 00007ffca3066920 R08: 0000000000000000 R09: 0000000000000000
[ 493.023394][ T56] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f36735e8390
[ 493.023569][ T56] R13: 0000562c69e5b440 R14: 0000000000000007 R15: 00007f36735750d0
[ 493.023772][ T56]
[ 493.023871][ T56]
[ 493.023871][ T56] Showing all locks held in the system:
[ 493.024032][ T56] 3 locks held by kworker/u24:0/12:
[ 493.024146][ T56] #0: ff110000090db540 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 493.024369][ T56] #1: ffa00000000cfd10 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 493.024642][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30
[ 493.024837][ T56] 1 lock held by khungtaskd/56:
[ 493.024942][ T56] #0: ffffffff95badec0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 493.025155][ T56] 4 locks held by kworker/2:1/67:
[ 493.025263][ T56] #0: ff11000001091b40 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 493.025476][ T56] #1: ffa00000004b7d10 ((work_completion)(&(&fbd->service_task)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 493.025723][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: fbnic_service_task+0x97/0x570
[ 493.025911][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: fbnic_service_task+0x3ba/0x570
[ 493.026106][ T56] 4 locks held by python3/6054:
[ 493.026214][ T56] #0: ff1100000a4b1420 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 493.026403][ T56] #1: ff1100000ea4ee80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 493.026593][ T56] #2: ff110000082190f0 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 493.026808][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 493.026996][ T56]
[ 493.027051][ T56] =============================================
[ 493.027051][ T56]
[ 615.887580][ T56] INFO: task kworker/u24:0:12 blocked for more than 245 seconds.
[ 615.887914][ T56] Not tainted 7.1.0-virtme #1
[ 615.888051][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 615.888272][ T56] task:kworker/u24:0 state:D stack:26784 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 615.888601][ T56] Workqueue: ipv6_addrconf addrconf_verify_work
[ 615.888774][ T56] Call Trace:
[ 615.888877][ T56]
[ 615.888951][ T56] __schedule+0xf8c/0x20e0
[ 615.889095][ T56] ? io_schedule_timeout+0x140/0x140
[ 615.889227][ T56] ? find_held_lock+0x2b/0x80
[ 615.889366][ T56] schedule+0xe7/0x2f0
[ 615.889469][ T56] schedule_preempt_disabled+0x18/0x30
[ 615.889616][ T56] __mutex_lock+0x6a1/0x1f10
[ 615.889750][ T56] ? addrconf_verify_work+0x12/0x30
[ 615.889886][ T56] ? ww_mutex_lock+0x160/0x160
[ 615.890023][ T56] ? __lock_acquire+0x518/0xc20
[ 615.890163][ T56] ? process_one_work+0xdb7/0x1410
[ 615.890296][ T56] ? rcu_is_watching+0x15/0xd0
[ 615.890426][ T56] ? rcu_is_watching+0x15/0xd0
[ 615.890571][ T56] ? addrconf_verify_work+0x12/0x30
[ 615.890700][ T56] addrconf_verify_work+0x12/0x30
[ 615.890831][ T56] process_one_work+0xdf8/0x1410
[ 615.890969][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 615.891101][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 615.891234][ T56] worker_thread+0x4f1/0xd60
[ 615.891367][ T56] ? rescuer_thread+0x1320/0x1320
[ 615.891500][ T56] kthread+0x367/0x460
[ 615.891602][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 615.891761][ T56] ? kthread_affine_node+0x330/0x330
[ 615.891890][ T56] ret_from_fork+0x474/0x6b0
[ 615.892023][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 615.892180][ T56] ? __switch_to+0x5a3/0xe00
[ 615.892304][ T56] ? kthread_affine_node+0x330/0x330
[ 615.892434][ T56] ret_from_fork_asm+0x11/0x20
[ 615.892572][ T56]
[ 615.892682][ T56] INFO: task kworker/u24:0:12 is blocked on a mutex likely owned by task kworker/2:1:67.
[ 615.892898][ T56] INFO: task kworker/2:1:67 blocked for more than 245 seconds.
[ 615.893072][ T56] Not tainted 7.1.0-virtme #1
[ 615.893185][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 615.893381][ T56] task:kworker/2:1 state:D stack:27328 pid:67 tgid:67 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 615.893650][ T56] Workqueue: events fbnic_service_task
[ 615.893772][ T56] Call Trace:
[ 615.893864][ T56]
[ 615.893927][ T56] __schedule+0xf8c/0x20e0
[ 615.894054][ T56] ? io_schedule_timeout+0x140/0x140
[ 615.894177][ T56] ? find_held_lock+0x2b/0x80
[ 615.894299][ T56] schedule+0xe7/0x2f0
[ 615.894390][ T56] schedule_preempt_disabled+0x18/0x30
[ 615.894509][ T56] __mutex_lock+0x6a1/0x1f10
[ 615.894631][ T56] ? fbnic_service_task+0x3ba/0x570
[ 615.894752][ T56] ? ww_mutex_lock+0x160/0x160
[ 615.894875][ T56] ? __lock_release.isra.0+0x6b/0x1a0
[ 615.894999][ T56] ? fbnic_service_task+0x3ba/0x570
[ 615.895118][ T56] fbnic_service_task+0x3ba/0x570
[ 615.895236][ T56] process_one_work+0xdf8/0x1410
[ 615.895355][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 615.895472][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 615.895599][ T56] worker_thread+0x4f1/0xd60
[ 615.895718][ T56] ? rescuer_thread+0x1320/0x1320
[ 615.895834][ T56] ? __kthread_parkme+0xbd/0x210
[ 615.895956][ T56] ? rescuer_thread+0x1320/0x1320
[ 615.896077][ T56] ? rescuer_thread+0x1320/0x1320
[ 615.896190][ T56] kthread+0x367/0x460
[ 615.896276][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 615.896422][ T56] ? kthread_affine_node+0x330/0x330
[ 615.896540][ T56] ret_from_fork+0x474/0x6b0
[ 615.896659][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 615.896806][ T56] ? __switch_to+0x5a3/0xe00
[ 615.896920][ T56] ? kthread_affine_node+0x330/0x330
[ 615.897036][ T56] ret_from_fork_asm+0x11/0x20
[ 615.897156][ T56]
[ 615.897263][ T56] INFO: task kworker/2:1:67 is blocked on a mutex likely owned by task python3:6054.
[ 615.897451][ T56] task:python3 state:D stack:25688 pid:6054 tgid:6054 ppid:6053 task_flags:0x400100 flags:0x00080800
[ 615.897708][ T56] Call Trace:
[ 615.897793][ T56]
[ 615.897852][ T56] __schedule+0xf8c/0x20e0
[ 615.897967][ T56] ? io_schedule_timeout+0x140/0x140
[ 615.898084][ T56] ? find_held_lock+0x2b/0x80
[ 615.898198][ T56] schedule+0xe7/0x2f0
[ 615.898284][ T56] schedule_timeout+0x13f/0x290
[ 615.898396][ T56] ? hrtimer_nanosleep_restart+0x270/0x270
[ 615.898539][ T56] ? rcu_is_watching+0x15/0xd0
[ 615.898654][ T56] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 615.898768][ T56] ? threaded_store+0x132/0x220
[ 615.898883][ T56] ? rcu_is_watching+0x15/0xd0
[ 615.898995][ T56] msleep+0x1b/0x30
[ 615.899081][ T56] napi_set_threaded+0x19d/0x590
[ 615.899195][ T56] ? napi_resume_irqs+0x1a0/0x1a0
[ 615.899310][ T56] ? __mutex_lock+0x9a4/0x1f10
[ 615.899425][ T56] netif_set_threaded+0x361/0x5f0
[ 615.899538][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 615.899653][ T56] ? sysfs_file_ops+0x140/0x140
[ 615.899765][ T56] threaded_store+0x1b8/0x220
[ 615.899876][ T56] ? xps_rxqs_store+0x2e0/0x2e0
[ 615.899988][ T56] ? sysfs_file_ops+0x140/0x140
[ 615.900101][ T56] ? sysfs_file_kobj+0xbd/0x1e0
[ 615.900214][ T56] ? sysfs_kf_write+0x65/0x160
[ 615.900325][ T56] kernfs_fop_write_iter+0x335/0x510
[ 615.900438][ T56] ? kernfs_ops+0xf0/0xf0
[ 615.900522][ T56] new_sync_write+0x33e/0x760
[ 615.900641][ T56] ? __lock_acquire+0x518/0xc20
[ 615.900752][ T56] ? new_sync_read+0x750/0x750
[ 615.900863][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 615.900973][ T56] ? ksys_write+0x116/0x250
[ 615.901095][ T56] vfs_write+0x6a4/0xbe0
[ 615.901181][ T56] ksys_write+0x116/0x250
[ 615.901266][ T56] ? __ia32_sys_read+0xc0/0xc0
[ 615.901376][ T56] ? kernfs_fop_llseek+0x160/0x1f0
[ 615.901486][ T56] ? rcu_is_watching+0x15/0xd0
[ 615.901603][ T56] do_syscall_64+0x117/0x590
[ 615.901715][ T56] ? irq_exit_rcu+0x1a/0x30
[ 615.901827][ T56] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 615.901970][ T56] RIP: 0033:0x7f367376f64e
[ 615.902092][ T56] RSP: 002b:00007ffca3066910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 615.902266][ T56] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f367376f64e
[ 615.902434][ T56] RDX: 0000000000000001 RSI: 0000562c69e5b440 RDI: 0000000000000007
[ 615.902605][ T56] RBP: 00007ffca3066920 R08: 0000000000000000 R09: 0000000000000000
[ 615.902778][ T56] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f36735e8390
[ 615.902943][ T56] R13: 0000562c69e5b440 R14: 0000000000000007 R15: 00007f36735750d0
[ 615.903119][ T56]
[ 615.903213][ T56]
[ 615.903213][ T56] Showing all locks held in the system:
[ 615.903373][ T56] 3 locks held by kworker/u24:0/12:
[ 615.903483][ T56] #0: ff110000090db540 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 615.903704][ T56] #1: ffa00000000cfd10 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 615.903970][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30
[ 615.904171][ T56] 1 lock held by khungtaskd/56:
[ 615.904278][ T56] #0: ffffffff95badec0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 615.904492][ T56] 4 locks held by kworker/2:1/67:
[ 615.904602][ T56] #0: ff11000001091b40 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 615.904816][ T56] #1: ffa00000004b7d10 ((work_completion)(&(&fbd->service_task)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 615.905061][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: fbnic_service_task+0x97/0x570
[ 615.905247][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: fbnic_service_task+0x3ba/0x570
[ 615.905442][ T56] 4 locks held by python3/6054:
[ 615.905545][ T56] #0: ff1100000a4b1420 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 615.905742][ T56] #1: ff1100000ea4ee80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 615.905929][ T56] #2: ff110000082190f0 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 615.906144][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 615.906331][ T56]
[ 615.906390][ T56] =============================================
[ 615.906390][ T56]
[ 738.767580][ T56] INFO: task kworker/u24:0:12 blocked for more than 368 seconds.
[ 738.767910][ T56] Not tainted 7.1.0-virtme #1
[ 738.768043][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 738.768265][ T56] task:kworker/u24:0 state:D stack:26784 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 738.768589][ T56] Workqueue: ipv6_addrconf addrconf_verify_work
[ 738.768771][ T56] Call Trace:
[ 738.768877][ T56]
[ 738.768950][ T56] __schedule+0xf8c/0x20e0
[ 738.769092][ T56] ? io_schedule_timeout+0x140/0x140
[ 738.769232][ T56] ? find_held_lock+0x2b/0x80
[ 738.769371][ T56] schedule+0xe7/0x2f0
[ 738.769478][ T56] schedule_preempt_disabled+0x18/0x30
[ 738.769619][ T56] __mutex_lock+0x6a1/0x1f10
[ 738.769750][ T56] ? addrconf_verify_work+0x12/0x30
[ 738.769887][ T56] ? ww_mutex_lock+0x160/0x160
[ 738.770018][ T56] ? __lock_acquire+0x518/0xc20
[ 738.770152][ T56] ? process_one_work+0xdb7/0x1410
[ 738.770286][ T56] ? rcu_is_watching+0x15/0xd0
[ 738.770417][ T56] ? rcu_is_watching+0x15/0xd0
[ 738.770553][ T56] ? addrconf_verify_work+0x12/0x30
[ 738.770686][ T56] addrconf_verify_work+0x12/0x30
[ 738.770817][ T56] process_one_work+0xdf8/0x1410
[ 738.770953][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 738.771081][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 738.771215][ T56] worker_thread+0x4f1/0xd60
[ 738.771352][ T56] ? rescuer_thread+0x1320/0x1320
[ 738.771482][ T56] kthread+0x367/0x460
[ 738.771584][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 738.771743][ T56] ? kthread_affine_node+0x330/0x330
[ 738.771869][ T56] ret_from_fork+0x474/0x6b0
[ 738.772001][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 738.772161][ T56] ? __switch_to+0x5a3/0xe00
[ 738.772288][ T56] ? kthread_affine_node+0x330/0x330
[ 738.772417][ T56] ret_from_fork_asm+0x11/0x20
[ 738.772547][ T56]
[ 738.772661][ T56] INFO: task kworker/u24:0:12 is blocked on a mutex likely owned by task kworker/2:1:67.
[ 738.772877][ T56] INFO: task kworker/2:1:67 blocked for more than 368 seconds.
[ 738.773048][ T56] Not tainted 7.1.0-virtme #1
[ 738.773162][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 738.773361][ T56] task:kworker/2:1 state:D stack:27328 pid:67 tgid:67 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 738.773627][ T56] Workqueue: events fbnic_service_task
[ 738.773747][ T56] Call Trace:
[ 738.773836][ T56]
[ 738.773900][ T56] __schedule+0xf8c/0x20e0
[ 738.774022][ T56] ? io_schedule_timeout+0x140/0x140
[ 738.774144][ T56] ? find_held_lock+0x2b/0x80
[ 738.774268][ T56] schedule+0xe7/0x2f0
[ 738.774360][ T56] schedule_preempt_disabled+0x18/0x30
[ 738.774476][ T56] __mutex_lock+0x6a1/0x1f10
[ 738.774599][ T56] ? fbnic_service_task+0x3ba/0x570
[ 738.774718][ T56] ? ww_mutex_lock+0x160/0x160
[ 738.774837][ T56] ? __lock_release.isra.0+0x6b/0x1a0
[ 738.774962][ T56] ? fbnic_service_task+0x3ba/0x570
[ 738.775076][ T56] fbnic_service_task+0x3ba/0x570
[ 738.775198][ T56] process_one_work+0xdf8/0x1410
[ 738.775320][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 738.775436][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 738.775556][ T56] worker_thread+0x4f1/0xd60
[ 738.775680][ T56] ? rescuer_thread+0x1320/0x1320
[ 738.775801][ T56] ? __kthread_parkme+0xbd/0x210
[ 738.775920][ T56] ? rescuer_thread+0x1320/0x1320
[ 738.776037][ T56] ? rescuer_thread+0x1320/0x1320
[ 738.776156][ T56] kthread+0x367/0x460
[ 738.776243][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 738.776385][ T56] ? kthread_affine_node+0x330/0x330
[ 738.776500][ T56] ret_from_fork+0x474/0x6b0
[ 738.776620][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 738.776767][ T56] ? __switch_to+0x5a3/0xe00
[ 738.776883][ T56] ? kthread_affine_node+0x330/0x330
[ 738.776996][ T56] ret_from_fork_asm+0x11/0x20
[ 738.777115][ T56]
[ 738.777222][ T56] INFO: task kworker/2:1:67 is blocked on a mutex likely owned by task python3:6054.
[ 738.777406][ T56] task:python3 state:D stack:25688 pid:6054 tgid:6054 ppid:6053 task_flags:0x400100 flags:0x00080800
[ 738.777659][ T56] Call Trace:
[ 738.777744][ T56]
[ 738.777804][ T56] __schedule+0xf8c/0x20e0
[ 738.777923][ T56] ? io_schedule_timeout+0x140/0x140
[ 738.778037][ T56] ? find_held_lock+0x2b/0x80
[ 738.778154][ T56] schedule+0xe7/0x2f0
[ 738.778240][ T56] schedule_timeout+0x13f/0x290
[ 738.778359][ T56] ? hrtimer_nanosleep_restart+0x270/0x270
[ 738.778498][ T56] ? rcu_is_watching+0x15/0xd0
[ 738.778615][ T56] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 738.778731][ T56] ? threaded_store+0x132/0x220
[ 738.778847][ T56] ? rcu_is_watching+0x15/0xd0
[ 738.778963][ T56] msleep+0x1b/0x30
[ 738.779048][ T56] napi_set_threaded+0x19d/0x590
[ 738.779164][ T56] ? napi_resume_irqs+0x1a0/0x1a0
[ 738.779280][ T56] ? __mutex_lock+0x9a4/0x1f10
[ 738.779395][ T56] netif_set_threaded+0x361/0x5f0
[ 738.779508][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 738.779627][ T56] ? sysfs_file_ops+0x140/0x140
[ 738.779740][ T56] threaded_store+0x1b8/0x220
[ 738.779853][ T56] ? xps_rxqs_store+0x2e0/0x2e0
[ 738.779966][ T56] ? sysfs_file_ops+0x140/0x140
[ 738.780076][ T56] ? sysfs_file_kobj+0xbd/0x1e0
[ 738.780193][ T56] ? sysfs_kf_write+0x65/0x160
[ 738.780305][ T56] kernfs_fop_write_iter+0x335/0x510
[ 738.780418][ T56] ? kernfs_ops+0xf0/0xf0
[ 738.780503][ T56] new_sync_write+0x33e/0x760
[ 738.780621][ T56] ? __lock_acquire+0x518/0xc20
[ 738.780735][ T56] ? new_sync_read+0x750/0x750
[ 738.780848][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 738.780961][ T56] ? ksys_write+0x116/0x250
[ 738.781077][ T56] vfs_write+0x6a4/0xbe0
[ 738.781164][ T56] ksys_write+0x116/0x250
[ 738.781249][ T56] ? __ia32_sys_read+0xc0/0xc0
[ 738.781360][ T56] ? kernfs_fop_llseek+0x160/0x1f0
[ 738.781470][ T56] ? rcu_is_watching+0x15/0xd0
[ 738.781585][ T56] do_syscall_64+0x117/0x590
[ 738.781698][ T56] ? irq_exit_rcu+0x1a/0x30
[ 738.781807][ T56] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 738.781953][ T56] RIP: 0033:0x7f367376f64e
[ 738.782079][ T56] RSP: 002b:00007ffca3066910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 738.782249][ T56] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f367376f64e
[ 738.782415][ T56] RDX: 0000000000000001 RSI: 0000562c69e5b440 RDI: 0000000000000007
[ 738.782588][ T56] RBP: 00007ffca3066920 R08: 0000000000000000 R09: 0000000000000000
[ 738.782755][ T56] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f36735e8390
[ 738.782925][ T56] R13: 0000562c69e5b440 R14: 0000000000000007 R15: 00007f36735750d0
[ 738.783096][ T56]
[ 738.783192][ T56]
[ 738.783192][ T56] Showing all locks held in the system:
[ 738.783353][ T56] 3 locks held by kworker/u24:0/12:
[ 738.783463][ T56] #0: ff110000090db540 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 738.783687][ T56] #1: ffa00000000cfd10 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 738.783957][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30
[ 738.784152][ T56] 1 lock held by khungtaskd/56:
[ 738.784260][ T56] #0: ffffffff95badec0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 738.784476][ T56] 4 locks held by kworker/2:1/67:
[ 738.784585][ T56] #0: ff11000001091b40 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 738.784798][ T56] #1: ffa00000004b7d10 ((work_completion)(&(&fbd->service_task)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 738.785042][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: fbnic_service_task+0x97/0x570
[ 738.785229][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: fbnic_service_task+0x3ba/0x570
[ 738.785431][ T56] 4 locks held by python3/6054:
[ 738.785536][ T56] #0: ff1100000a4b1420 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 738.785731][ T56] #1: ff1100000ea4ee80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 738.785924][ T56] #2: ff110000082190f0 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 738.786138][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 738.786329][ T56]
[ 738.786389][ T56] =============================================
[ 738.786389][ T56]
[ 861.647577][ T56] INFO: task kworker/u24:0:12 blocked for more than 491 seconds.
[ 861.647885][ T56] Not tainted 7.1.0-virtme #1
[ 861.648021][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 861.648244][ T56] task:kworker/u24:0 state:D stack:26784 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 861.648557][ T56] Workqueue: ipv6_addrconf addrconf_verify_work
[ 861.648752][ T56] Call Trace:
[ 861.648856][ T56]
[ 861.648930][ T56] __schedule+0xf8c/0x20e0
[ 861.649074][ T56] ? io_schedule_timeout+0x140/0x140
[ 861.649210][ T56] ? find_held_lock+0x2b/0x80
[ 861.649352][ T56] schedule+0xe7/0x2f0
[ 861.649460][ T56] schedule_preempt_disabled+0x18/0x30
[ 861.649604][ T56] __mutex_lock+0x6a1/0x1f10
[ 861.649737][ T56] ? addrconf_verify_work+0x12/0x30
[ 861.649875][ T56] ? ww_mutex_lock+0x160/0x160
[ 861.650008][ T56] ? __lock_acquire+0x518/0xc20
[ 861.650143][ T56] ? process_one_work+0xdb7/0x1410
[ 861.650279][ T56] ? rcu_is_watching+0x15/0xd0
[ 861.650414][ T56] ? rcu_is_watching+0x15/0xd0
[ 861.650549][ T56] ? addrconf_verify_work+0x12/0x30
[ 861.650686][ T56] addrconf_verify_work+0x12/0x30
[ 861.650817][ T56] process_one_work+0xdf8/0x1410
[ 861.650950][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 861.651081][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 861.651215][ T56] worker_thread+0x4f1/0xd60
[ 861.651350][ T56] ? rescuer_thread+0x1320/0x1320
[ 861.651483][ T56] kthread+0x367/0x460
[ 861.651586][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 861.651749][ T56] ? kthread_affine_node+0x330/0x330
[ 861.651876][ T56] ret_from_fork+0x474/0x6b0
[ 861.652005][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 861.652163][ T56] ? __switch_to+0x5a3/0xe00
[ 861.652289][ T56] ? kthread_affine_node+0x330/0x330
[ 861.652422][ T56] ret_from_fork_asm+0x11/0x20
[ 861.652556][ T56]
[ 861.652672][ T56] INFO: task kworker/u24:0:12 is blocked on a mutex likely owned by task kworker/2:1:67.
[ 861.652889][ T56] INFO: task kworker/2:1:67 blocked for more than 491 seconds.
[ 861.653060][ T56] Not tainted 7.1.0-virtme #1
[ 861.653173][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 861.653379][ T56] task:kworker/2:1 state:D stack:27328 pid:67 tgid:67 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 861.653655][ T56] Workqueue: events fbnic_service_task
[ 861.653779][ T56] Call Trace:
[ 861.653873][ T56]
[ 861.653935][ T56] __schedule+0xf8c/0x20e0
[ 861.654059][ T56] ? io_schedule_timeout+0x140/0x140
[ 861.654185][ T56] ? find_held_lock+0x2b/0x80
[ 861.654309][ T56] schedule+0xe7/0x2f0
[ 861.654402][ T56] schedule_preempt_disabled+0x18/0x30
[ 861.654523][ T56] __mutex_lock+0x6a1/0x1f10
[ 861.654648][ T56] ? fbnic_service_task+0x3ba/0x570
[ 861.654771][ T56] ? ww_mutex_lock+0x160/0x160
[ 861.654892][ T56] ? __lock_release.isra.0+0x6b/0x1a0
[ 861.655018][ T56] ? fbnic_service_task+0x3ba/0x570
[ 861.655137][ T56] fbnic_service_task+0x3ba/0x570
[ 861.655257][ T56] process_one_work+0xdf8/0x1410
[ 861.655379][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 861.655498][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 861.655628][ T56] worker_thread+0x4f1/0xd60
[ 861.655749][ T56] ? rescuer_thread+0x1320/0x1320
[ 861.655869][ T56] ? __kthread_parkme+0xbd/0x210
[ 861.655986][ T56] ? rescuer_thread+0x1320/0x1320
[ 861.656103][ T56] ? rescuer_thread+0x1320/0x1320
[ 861.656218][ T56] kthread+0x367/0x460
[ 861.656307][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 861.656450][ T56] ? kthread_affine_node+0x330/0x330
[ 861.656571][ T56] ret_from_fork+0x474/0x6b0
[ 861.656687][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 861.656835][ T56] ? __switch_to+0x5a3/0xe00
[ 861.656953][ T56] ? kthread_affine_node+0x330/0x330
[ 861.657067][ T56] ret_from_fork_asm+0x11/0x20
[ 861.657187][ T56]
[ 861.657294][ T56] INFO: task kworker/2:1:67 is blocked on a mutex likely owned by task python3:6054.
[ 861.657479][ T56] task:python3 state:D stack:25688 pid:6054 tgid:6054 ppid:6053 task_flags:0x400100 flags:0x00080800
[ 861.657737][ T56] Call Trace:
[ 861.657825][ T56]
[ 861.657884][ T56] __schedule+0xf8c/0x20e0
[ 861.658001][ T56] ? io_schedule_timeout+0x140/0x140
[ 861.658115][ T56] ? find_held_lock+0x2b/0x80
[ 861.658232][ T56] schedule+0xe7/0x2f0
[ 861.658319][ T56] schedule_timeout+0x13f/0x290
[ 861.658461][ T56] ? hrtimer_nanosleep_restart+0x270/0x270
[ 861.658604][ T56] ? rcu_is_watching+0x15/0xd0
[ 861.658716][ T56] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 861.658833][ T56] ? threaded_store+0x132/0x220
[ 861.658948][ T56] ? rcu_is_watching+0x15/0xd0
[ 861.659062][ T56] msleep+0x1b/0x30
[ 861.659147][ T56] napi_set_threaded+0x19d/0x590
[ 861.659261][ T56] ? napi_resume_irqs+0x1a0/0x1a0
[ 861.659375][ T56] ? __mutex_lock+0x9a4/0x1f10
[ 861.659489][ T56] netif_set_threaded+0x361/0x5f0
[ 861.659605][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 861.659721][ T56] ? sysfs_file_ops+0x140/0x140
[ 861.659839][ T56] threaded_store+0x1b8/0x220
[ 861.659953][ T56] ? xps_rxqs_store+0x2e0/0x2e0
[ 861.660066][ T56] ? sysfs_file_ops+0x140/0x140
[ 861.660178][ T56] ? sysfs_file_kobj+0xbd/0x1e0
[ 861.660294][ T56] ? sysfs_kf_write+0x65/0x160
[ 861.660406][ T56] kernfs_fop_write_iter+0x335/0x510
[ 861.660519][ T56] ? kernfs_ops+0xf0/0xf0
[ 861.660610][ T56] new_sync_write+0x33e/0x760
[ 861.660724][ T56] ? __lock_acquire+0x518/0xc20
[ 861.660841][ T56] ? new_sync_read+0x750/0x750
[ 861.660954][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 861.661071][ T56] ? ksys_write+0x116/0x250
[ 861.661186][ T56] vfs_write+0x6a4/0xbe0
[ 861.661272][ T56] ksys_write+0x116/0x250
[ 861.661357][ T56] ? __ia32_sys_read+0xc0/0xc0
[ 861.661467][ T56] ? kernfs_fop_llseek+0x160/0x1f0
[ 861.661584][ T56] ? rcu_is_watching+0x15/0xd0
[ 861.661696][ T56] do_syscall_64+0x117/0x590
[ 861.661810][ T56] ? irq_exit_rcu+0x1a/0x30
[ 861.661927][ T56] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 861.662065][ T56] RIP: 0033:0x7f367376f64e
[ 861.662184][ T56] RSP: 002b:00007ffca3066910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 861.662353][ T56] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f367376f64e
[ 861.662518][ T56] RDX: 0000000000000001 RSI: 0000562c69e5b440 RDI: 0000000000000007
[ 861.662693][ T56] RBP: 00007ffca3066920 R08: 0000000000000000 R09: 0000000000000000
[ 861.662861][ T56] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f36735e8390
[ 861.663027][ T56] R13: 0000562c69e5b440 R14: 0000000000000007 R15: 00007f36735750d0
[ 861.663200][ T56]
[ 861.663296][ T56]
[ 861.663296][ T56] Showing all locks held in the system:
[ 861.663465][ T56] 3 locks held by kworker/u24:0/12:
[ 861.663580][ T56] #0: ff110000090db540 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 861.663801][ T56] #1: ffa00000000cfd10 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 861.664067][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30
[ 861.664264][ T56] 1 lock held by khungtaskd/56:
[ 861.664371][ T56] #0: ffffffff95badec0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 861.664590][ T56] 4 locks held by kworker/2:1/67:
[ 861.664696][ T56] #0: ff11000001091b40 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 861.664913][ T56] #1: ffa00000004b7d10 ((work_completion)(&(&fbd->service_task)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 861.665156][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: fbnic_service_task+0x97/0x570
[ 861.665345][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: fbnic_service_task+0x3ba/0x570
[ 861.665539][ T56] 4 locks held by python3/6054:
[ 861.665648][ T56] #0: ff1100000a4b1420 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 861.665842][ T56] #1: ff1100000ea4ee80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 861.666029][ T56] #2: ff110000082190f0 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 861.666243][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 861.666435][ T56]
[ 861.666489][ T56] =============================================
[ 861.666489][ T56]
[ 984.527578][ T56] INFO: task kworker/u24:0:12 blocked for more than 614 seconds.
[ 984.527906][ T56] Not tainted 7.1.0-virtme #1
[ 984.528040][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 984.528262][ T56] task:kworker/u24:0 state:D stack:26784 pid:12 tgid:12 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 984.528589][ T56] Workqueue: ipv6_addrconf addrconf_verify_work
[ 984.528771][ T56] Call Trace:
[ 984.528876][ T56]
[ 984.528950][ T56] __schedule+0xf8c/0x20e0
[ 984.529094][ T56] ? io_schedule_timeout+0x140/0x140
[ 984.529231][ T56] ? find_held_lock+0x2b/0x80
[ 984.529373][ T56] schedule+0xe7/0x2f0
[ 984.529482][ T56] schedule_preempt_disabled+0x18/0x30
[ 984.529629][ T56] __mutex_lock+0x6a1/0x1f10
[ 984.529766][ T56] ? addrconf_verify_work+0x12/0x30
[ 984.529904][ T56] ? ww_mutex_lock+0x160/0x160
[ 984.530036][ T56] ? __lock_acquire+0x518/0xc20
[ 984.530171][ T56] ? process_one_work+0xdb7/0x1410
[ 984.530307][ T56] ? rcu_is_watching+0x15/0xd0
[ 984.530443][ T56] ? rcu_is_watching+0x15/0xd0
[ 984.530582][ T56] ? addrconf_verify_work+0x12/0x30
[ 984.530726][ T56] addrconf_verify_work+0x12/0x30
[ 984.530858][ T56] process_one_work+0xdf8/0x1410
[ 984.530994][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 984.531124][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 984.531258][ T56] worker_thread+0x4f1/0xd60
[ 984.531398][ T56] ? rescuer_thread+0x1320/0x1320
[ 984.531528][ T56] kthread+0x367/0x460
[ 984.531634][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 984.531797][ T56] ? kthread_affine_node+0x330/0x330
[ 984.531927][ T56] ret_from_fork+0x474/0x6b0
[ 984.532057][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 984.532215][ T56] ? __switch_to+0x5a3/0xe00
[ 984.532347][ T56] ? kthread_affine_node+0x330/0x330
[ 984.532473][ T56] ret_from_fork_asm+0x11/0x20
[ 984.532611][ T56]
[ 984.532725][ T56] INFO: task kworker/u24:0:12 is blocked on a mutex likely owned by task kworker/2:1:67.
[ 984.532943][ T56] INFO: task kworker/2:1:67 blocked for more than 614 seconds.
[ 984.533114][ T56] Not tainted 7.1.0-virtme #1
[ 984.533233][ T56] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 984.533430][ T56] task:kworker/2:1 state:D stack:27328 pid:67 tgid:67 ppid:2 task_flags:0x4208060 flags:0x00080000
[ 984.533707][ T56] Workqueue: events fbnic_service_task
[ 984.533833][ T56] Call Trace:
[ 984.533923][ T56]
[ 984.533985][ T56] __schedule+0xf8c/0x20e0
[ 984.534110][ T56] ? io_schedule_timeout+0x140/0x140
[ 984.534230][ T56] ? find_held_lock+0x2b/0x80
[ 984.534355][ T56] schedule+0xe7/0x2f0
[ 984.534446][ T56] schedule_preempt_disabled+0x18/0x30
[ 984.534570][ T56] __mutex_lock+0x6a1/0x1f10
[ 984.534693][ T56] ? fbnic_service_task+0x3ba/0x570
[ 984.534819][ T56] ? ww_mutex_lock+0x160/0x160
[ 984.534943][ T56] ? __lock_release.isra.0+0x6b/0x1a0
[ 984.535065][ T56] ? fbnic_service_task+0x3ba/0x570
[ 984.535183][ T56] fbnic_service_task+0x3ba/0x570
[ 984.535301][ T56] process_one_work+0xdf8/0x1410
[ 984.535425][ T56] ? pwq_dec_nr_in_flight+0x710/0x710
[ 984.535543][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 984.535675][ T56] worker_thread+0x4f1/0xd60
[ 984.535794][ T56] ? rescuer_thread+0x1320/0x1320
[ 984.535914][ T56] ? __kthread_parkme+0xbd/0x210
[ 984.536029][ T56] ? rescuer_thread+0x1320/0x1320
[ 984.536145][ T56] ? rescuer_thread+0x1320/0x1320
[ 984.536260][ T56] kthread+0x367/0x460
[ 984.536347][ T56] ? trace_irq_enable.constprop.0+0x9b/0x160
[ 984.536491][ T56] ? kthread_affine_node+0x330/0x330
[ 984.536615][ T56] ret_from_fork+0x474/0x6b0
[ 984.536736][ T56] ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[ 984.536879][ T56] ? __switch_to+0x5a3/0xe00
[ 984.536991][ T56] ? kthread_affine_node+0x330/0x330
[ 984.537105][ T56] ret_from_fork_asm+0x11/0x20
[ 984.537225][ T56]
[ 984.537332][ T56] INFO: task kworker/2:1:67 is blocked on a mutex likely owned by task python3:6054.
[ 984.537521][ T56] task:python3 state:D stack:25688 pid:6054 tgid:6054 ppid:6053 task_flags:0x400100 flags:0x00080800
[ 984.537780][ T56] Call Trace:
[ 984.537865][ T56]
[ 984.537924][ T56] __schedule+0xf8c/0x20e0
[ 984.538039][ T56] ? io_schedule_timeout+0x140/0x140
[ 984.538151][ T56] ? find_held_lock+0x2b/0x80
[ 984.538267][ T56] schedule+0xe7/0x2f0
[ 984.538353][ T56] schedule_timeout+0x13f/0x290
[ 984.538473][ T56] ? hrtimer_nanosleep_restart+0x270/0x270
[ 984.538619][ T56] ? rcu_is_watching+0x15/0xd0
[ 984.538732][ T56] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 984.538848][ T56] ? threaded_store+0x132/0x220
[ 984.538963][ T56] ? rcu_is_watching+0x15/0xd0
[ 984.539075][ T56] msleep+0x1b/0x30
[ 984.539160][ T56] napi_set_threaded+0x19d/0x590
[ 984.539278][ T56] ? napi_resume_irqs+0x1a0/0x1a0
[ 984.539388][ T56] ? __mutex_lock+0x9a4/0x1f10
[ 984.539504][ T56] netif_set_threaded+0x361/0x5f0
[ 984.539624][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 984.539738][ T56] ? sysfs_file_ops+0x140/0x140
[ 984.539851][ T56] threaded_store+0x1b8/0x220
[ 984.539963][ T56] ? xps_rxqs_store+0x2e0/0x2e0
[ 984.540076][ T56] ? sysfs_file_ops+0x140/0x140
[ 984.540190][ T56] ? sysfs_file_kobj+0xbd/0x1e0
[ 984.540304][ T56] ? sysfs_kf_write+0x65/0x160
[ 984.540416][ T56] kernfs_fop_write_iter+0x335/0x510
[ 984.540528][ T56] ? kernfs_ops+0xf0/0xf0
[ 984.540621][ T56] new_sync_write+0x33e/0x760
[ 984.540735][ T56] ? __lock_acquire+0x518/0xc20
[ 984.540847][ T56] ? new_sync_read+0x750/0x750
[ 984.540963][ T56] ? lock_acquire.part.0+0xbc/0x260
[ 984.541079][ T56] ? ksys_write+0x116/0x250
[ 984.541194][ T56] vfs_write+0x6a4/0xbe0
[ 984.541282][ T56] ksys_write+0x116/0x250
[ 984.541367][ T56] ? __ia32_sys_read+0xc0/0xc0
[ 984.541479][ T56] ? kernfs_fop_llseek+0x160/0x1f0
[ 984.541594][ T56] ? rcu_is_watching+0x15/0xd0
[ 984.541708][ T56] do_syscall_64+0x117/0x590
[ 984.541822][ T56] ? irq_exit_rcu+0x1a/0x30
[ 984.541938][ T56] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 984.542076][ T56] RIP: 0033:0x7f367376f64e
[ 984.542196][ T56] RSP: 002b:00007ffca3066910 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 984.542364][ T56] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f367376f64e
[ 984.542532][ T56] RDX: 0000000000000001 RSI: 0000562c69e5b440 RDI: 0000000000000007
[ 984.542710][ T56] RBP: 00007ffca3066920 R08: 0000000000000000 R09: 0000000000000000
[ 984.542877][ T56] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f36735e8390
[ 984.543042][ T56] R13: 0000562c69e5b440 R14: 0000000000000007 R15: 00007f36735750d0
[ 984.543213][ T56]
[ 984.543297][ T56] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
[ 984.543491][ T56]
[ 984.543491][ T56] Showing all locks held in the system:
[ 984.543666][ T56] 3 locks held by kworker/u24:0/12:
[ 984.543772][ T56] #0: ff110000090db540 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 984.543990][ T56] #1: ffa00000000cfd10 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 984.544258][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30
[ 984.544450][ T56] 1 lock held by khungtaskd/56:
[ 984.544555][ T56] #0: ffffffff95badec0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 984.544778][ T56] 4 locks held by kworker/2:1/67:
[ 984.544885][ T56] #0: ff11000001091b40 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0xd55/0x1410
[ 984.545102][ T56] #1: ffa00000004b7d10 ((work_completion)(&(&fbd->service_task)->work)){+.+.}-{0:0}, at: process_one_work+0xdb7/0x1410
[ 984.545341][ T56] #2: ffffffff96344e80 (rtnl_mutex){+.+.}-{4:4}, at: fbnic_service_task+0x97/0x570
[ 984.545527][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: fbnic_service_task+0x3ba/0x570
[ 984.545736][ T56] 4 locks held by python3/6054:
[ 984.545841][ T56] #0: ff1100000a4b1420 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 984.546029][ T56] #1: ff1100000ea4ee80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 984.546216][ T56] #2: ff110000082190f0 (kn->active#48){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 984.546430][ T56] #3: ff11000008030df0 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 984.546625][ T56]
[ 984.546680][ T56] =============================================
[ 984.546680][ T56]
WAIT TIMEOUT stderr
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Ctrl-C stderr
WAIT TIMEOUT stderr