INFO: task hung in hub_port

INFO: task hung in hub_port_init
Status: upstream: reported C repro on 2020/10/06 08:19
Reported-by: syzbot+74d6ef051d3d2eacf428@syzkaller.appspotmail.com
First crash: 218d, last: now

Cause bisection: introduced by (bisect log) :
commit 6dcf45e514974a1ff10755015b5e06746a033e5f
Author: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Date: Mon Jan 9 15:34:04 2017 +0000

sh_eth: use correct name for ECMR_MPDE bit

Crash: WARNING in nf_unregister_net_hook (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	INFO: task hung in hub_port_init	C			5999	6h01m	218d	0/1	upstream: reported C repro on 2020/10/03 08:19
linux-4.19	INFO: task hung in hub_port_init	C			3526	2d00h	218d	0/1	upstream: reported C repro on 2020/10/03 09:24

Sample crash report:

INFO: task kworker/0:1:7 blocked for more than 143 seconds.
      Not tainted 5.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1     state:D
 stack:27280 pid:    7 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 context_switch kernel/sched/core.c:4322 [inline]
 __schedule+0x911/0x21b0 kernel/sched/core.c:5073
 schedule+0xcf/0x270 kernel/sched/core.c:5152
 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711
 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706
 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
 hub_port_init+0x82e/0x2dd0 drivers/usb/core/hub.c:4708
 hub_port_connect drivers/usb/core/hub.c:5155 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
INFO: task kworker/0:3:3590 blocked for more than 144 seconds.
      Not tainted 5.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3     state:D stack:27544 pid: 3590 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 context_switch kernel/sched/core.c:4322 [inline]
 __schedule+0x911/0x21b0 kernel/sched/core.c:5073
 schedule+0xcf/0x270 kernel/sched/core.c:5152
 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711
 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706
 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
 hub_port_init+0x82e/0x2dd0 drivers/usb/core/hub.c:4708
 hub_port_connect drivers/usb/core/hub.c:5155 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 process_scheduled_works kernel/workqueue.c:2337 [inline]
 worker_thread+0x82b/0x1120 kernel/workqueue.c:2423
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
INFO: task kworker/1:0:8382 blocked for more than 145 seconds.
      Not tainted 5.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:27624 pid: 8382 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event

Call Trace:
 context_switch kernel/sched/core.c:4322 [inline]
 __schedule+0x911/0x21b0 kernel/sched/core.c:5073
 schedule+0xcf/0x270 kernel/sched/core.c:5152
 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711
 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706
 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
 hub_port_init+0x82e/0x2dd0 drivers/usb/core/hub.c:4708
 hub_port_connect drivers/usb/core/hub.c:5155 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 process_scheduled_works kernel/workqueue.c:2337 [inline]
 worker_thread+0x82b/0x1120 kernel/workqueue.c:2423
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
INFO: task kworker/0:0:8426 blocked for more than 146 seconds.
      Not tainted 5.12.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D
 stack:27336 pid: 8426 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 context_switch kernel/sched/core.c:4322 [inline]
 __schedule+0x911/0x21b0 kernel/sched/core.c:5073
 schedule+0xcf/0x270 kernel/sched/core.c:5152
 usb_kill_urb.part.0+0x19c/0x220 drivers/usb/core/urb.c:711
 usb_kill_urb+0x81/0xa0 drivers/usb/core/urb.c:706
 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153
 hub_port_init+0x82e/0x2dd0 drivers/usb/core/hub.c:4708
 hub_port_connect drivers/usb/core/hub.c:5155 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x2190/0x4320 drivers/usb/core/hub.c:5591
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Showing all locks held in the system:
5 locks held by kworker/0:1/7:
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246
 #1: ffffc90000cc7da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250
 #2: 
ffff88801cb4c218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline]
ffff88801cb4c218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537
 #3: 
ffff88801cb4f578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline]
ffff88801cb4f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline]
ffff88801cb4f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
ffff88801cb4f578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline]
ffff88801cb4f578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591
 #4: ffff88801c754b68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582
2 locks held by kworker/u4:4/465:
1 lock held by khungtaskd/1629:
 #0: 
ffffffff8bf74320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6327
5 locks held by kworker/0:3/3590:
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff8880153b9938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246
 #1: 
ffffc90003417da8
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250
 #2: ffff8881441c8218 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline]
 #2: ffff8881441c8218 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537
 #3: ffff8881441cb578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline]
 #3: ffff8881441cb578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline]
 #3: ffff8881441cb578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 #3: ffff8881441cb578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline]
 #3: ffff8881441cb578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591
 #4: 
ffff88814415b568 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582
1 lock held by systemd-journal/4825:
1 lock held by in:imklog/8084:
 #0: 
ffff8880137a8870
 (
&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:961
5 locks held by kworker/1:0/8382:
 #0: 
ffff8880153b9938 ((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
, at: set_work_data kernel/workqueue.c:616 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246
 #1: ffffc900017dfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250
 #2: 
ffff88801c977218
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline]
 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537
 #3: ffff888144102578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline]
 #3: ffff888144102578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline]
 #3: ffff888144102578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 #3: ffff888144102578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline]
 #3: ffff888144102578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591
 #4: ffff888143d05a68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582
5 locks held by kworker/0:0/8426:
 #0: 
ffff8880153b9938
 (
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
(wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2246
 #1: 
ffffc900017ffda8
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2250
 #2: 
ffff888144180218
 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:740 [inline]
 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4320 drivers/usb/core/hub.c:5537
 #3: 
ffff888144183578 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3030 [inline]
ffff888144183578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5154 [inline]
ffff888144183578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
ffff888144183578 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5509 [inline]
ffff888144183578 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4320 drivers/usb/core/hub.c:5591
 #4: ffff888144135168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2dd0 drivers/usb/core/hub.c:4582
3 locks held by syz-executor492/10144:
 #0: 
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: 
ffff8880b9d1f948
 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffffffff8bf74320
 (
rcu_read_lock){....}-{1:2}, at: trace_sched_stat_runtime include/trace/events/sched.h:519 [inline]
rcu_read_lock){....}-{1:2}, at: update_curr+0x2e4/0x840 kernel/sched/fair.c:851
3 locks held by syz-executor492/10216:
 #0: 
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: ffff8880b9d1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffff888020184e38 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
3 locks held by syz-executor492/10289:
3 locks held by syz-executor492/10297:
 #0: ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
 #0: ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: 
ffff8880b9d1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffff888020187538
 (
&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
3 locks held by syz-executor492/10341:
3 locks held by syz-executor492/10356:
3 locks held by vhci_rx/10364:
 #0: 
ffff8880b9c35198
 (
&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: ffff8880b9c1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: ffff88802ffb0220 (&(&sig->stats_lock)->lock){....}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
 #2: ffff88802ffb0220 (&(&sig->stats_lock)->lock){....}-{2:2}, at: write_seqlock include/linux/seqlock.h:890 [inline]
 #2: ffff88802ffb0220 (&(&sig->stats_lock)->lock){....}-{2:2}, at: __exit_signal kernel/exit.c:135 [inline]
 #2: ffff88802ffb0220 (&(&sig->stats_lock)->lock){....}-{2:2}, at: release_task+0x500/0x1680 kernel/exit.c:199
3 locks held by syz-executor492/10444:
 #0: 
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: 
ffff8880b9d1f948
 (
&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffff888020182db8 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
3 locks held by syz-executor492/10538:
 #0: ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
 #0: ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: ffff8880b9c1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffff888020183438
 (
&sig->wait_chldexit
){....}-{2:2}
, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
3 locks held by syz-executor492/10605:
8 locks held by syz-executor492/10617:
 #0: ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
 #0: ffff8880b9d35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: 
ffff8880b9d1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: ffff888020187538 (&sig->wait_chldexit){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
 #3: ffff88814073a688 (&memcg->move_lock){..-.}-{2:2}, at: lock_page_memcg+0x16f/0x510 mm/memcontrol.c:2152
 #4: 
ffff88814073a688
 (
&memcg->move_lock
){..-.}-{2:2}
, at: lock_page_memcg+0x16f/0x510 mm/memcontrol.c:2152
 #5: 
ffff8880b9d35198
 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
 (&rq->lock){-.-.}-{2:2}, at: ttwu_queue kernel/sched/core.c:3184 [inline]
 (&rq->lock){-.-.}-{2:2}, at: try_to_wake_up+0x5e6/0x14a0 kernel/sched/core.c:3464
 #6: 
ffffffff8bf74320
 (
rcu_read_lock
){....}-{1:2}
, at: trace_sched_stat_runtime include/trace/events/sched.h:519 [inline]
, at: update_curr+0x2e4/0x840 kernel/sched/fair.c:851
 #7: ffffffff8be83018 (console_owner_lock){....}-{2:2}, at: console_lock_spinning_disable_and_check kernel/printk/printk.c:1736 [inline]
 #7: ffffffff8be83018 (console_owner_lock){....}-{2:2}, at: console_unlock+0x68c/0xc80 kernel/printk/printk.c:2579
3 locks held by syz-executor492/10816:
2 locks held by syz-executor492/10820:
 #0: 
ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: ffff8880b9c1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
3 locks held by syz-executor492/10853:
3 locks held by syz-executor492/10854:
 #0: ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1321 [inline]
 #0: ffff8880b9c35198 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: ffff8880b9c1f948
 (
&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
 #2: 
ffff888020183438
 (
&sig->wait_chldexit
){....}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
6 locks held by syz-executor492/10921:
3 locks held by syz-executor492/10928:
 #0: 
ffff8880b9c35198
 (
&rq->lock
){-.-.}-{2:2}
, at: rq_lock kernel/sched/sched.h:1321 [inline]
, at: __schedule+0x21c/0x21b0 kernel/sched/core.c:4990
 #1: 
ffff8880b9c1f948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833

Crashes (14104):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-root	2021/04/04 19:24	upstream	2023a53b	6a81331a	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/20 09:02	upstream	f40ddce8	f689d40a	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/02/16 20:57	upstream	f40ddce8	98682e5e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/02/16 19:42	upstream	f40ddce8	98682e5e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/02/15 12:56	upstream	f40ddce8	98682e5e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/02/04 16:49	upstream	61556703	42b90a7c	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/02/03 09:46	upstream	3aaf0a27	624dad51	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/02 03:51	upstream	1048ba83	e6b95f32	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/02 02:37	upstream	1048ba83	e6b95f32	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/01 12:48	upstream	1048ba83	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/01 09:23	upstream	1048ba83	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/01 02:13	upstream	6642d600	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/02/01 00:24	upstream	6642d600	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/01/31 21:14	upstream	6642d600	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/01/31 11:00	upstream	8c947645	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/01/30 23:00	upstream	0e9bcda5	fc9fd31e	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/04/03 05:32	linux-next	454c576c	6a81331a	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/08 21:02	linux-next	4641b323	09fbf400	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/05 17:18	linux-next	4641b323	9d751681	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/05 15:53	linux-next	4641b323	9d751681	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/04 10:36	linux-next	f5427c24	d7e4e604	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/04 08:08	linux-next	f5427c24	d7e4e604	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/04 02:30	linux-next	f6b975aa	06ed56cd	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/04 00:53	linux-next	f6b975aa	06ed56cd	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/03 21:43	linux-next	f6b975aa	06ed56cd	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/03 16:06	linux-next	f6b975aa	e5b64d68	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/03 13:50	linux-next	f6b975aa	e5b64d68	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/03 10:25	linux-next	92f791eb	e5b64d68	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/03 08:12	linux-next	92f791eb	e5b64d68	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/02 23:13	linux-next	92f791eb	92ead296	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/02 19:13	linux-next	92f791eb	92ead296	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/02 01:34	linux-next	26ada2d1	183afb6c	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/01 11:01	linux-next	26ada2d1	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/03/01 02:53	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/28 23:22	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/28 17:36	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/28 12:59	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/28 03:39	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/28 00:40	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/02/27 20:50	linux-next	d01f2f7e	4c37c133	.config	log	report	syz	C		INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2020/10/03 18:52	upstream	d3d45f82	2653fa43	.config	log	report	syz	C
ci-upstream-kasan-gce	2021/05/09 19:53	upstream	b7415964	bc5434be	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/08 22:47	upstream	ab159ac5	bc5434be	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/07 18:06	upstream	d2b6f8a1	f6da8120	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/07 02:55	upstream	d2b6f8a1	06585184	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/05/06 11:58	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/05/06 08:20	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/05/05 23:36	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/05/05 08:05	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/05/04 21:06	upstream	d2b6f8a1	09efdd63	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/05/04 04:23	upstream	d2b6f8a1	ad61f371	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/05/03 10:02	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/03 03:41	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/02 08:14	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/05/02 02:37	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/05/01 17:05	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/01 13:46	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/01 07:34	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/05/01 00:59	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/30 23:38	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/30 20:20	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/04/30 18:25	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/30 14:31	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/30 05:03	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/29 17:36	upstream	d72cd4ad	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/04/29 13:40	upstream	d72cd4ad	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/29 08:13	upstream	d72cd4ad	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/28 22:35	upstream	acd3d285	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/04/28 16:54	upstream	acd3d285	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/28 09:54	upstream	57fa2369	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/28 05:14	upstream	57fa2369	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/27 22:08	upstream	57fa2369	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/27 20:46	upstream	57fa2369	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/27 16:40	upstream	4a0225c3	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/04/27 06:26	upstream	4a0225c3	805b5003	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/26 11:24	upstream	9f4ad9e4	2a82f1b3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/04/26 08:27	upstream	d2d09fbe	2a82f1b3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/04/26 07:02	upstream	d2d09fbe	2a82f1b3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2021/04/26 05:33	upstream	d2d09fbe	2a82f1b3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/26 01:46	upstream	9f4ad9e4	2a82f1b3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce	2021/04/25 21:43	upstream	2a1d7946	36c88236	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/04/25 16:34	upstream	2a1d7946	36c88236	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-smack-root	2021/04/25 13:10	upstream	2a1d7946	36c88236	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-root	2021/04/25 03:22	upstream	8db5efb8	17f0b706	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/09 08:14	upstream	ab159ac5	bc5434be	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/06 04:11	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/05 18:47	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/05 14:38	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/05 06:32	upstream	d2b6f8a1	06c27ff5	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-386	2021/05/02 08:32	upstream	d2b6f8a1	77e2b668	.config	log	report			info	INFO: task hung in hub_port_init
ci-qemu2-arm64-compat	2021/03/14 09:30	upstream	f296bfd5	4a003785	.config	log	report			info	INFO: task hung in hub_port_init
ci-qemu2-arm64	2021/03/14 02:47	upstream	f296bfd5	4a003785	.config	log	report			info	INFO: task hung in hub_port_init
ci-qemu2-arm32	2021/03/13 12:52	upstream	f296bfd5	4a003785	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-linux-next-kasan-gce-root	2021/05/08 04:01	linux-next	869a85b9	bc5434be	.config	log	report			info	INFO: task hung in hub_port_init
ci-qemu2-riscv64	2021/03/11 03:13	git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes	0d7588ab	764067f3	.config	log	report			info	INFO: task hung in hub_port_init
ci-upstream-kasan-gce-selinux-root	2020/10/03 10:37	upstream	d3d45f82	2653fa43	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2021/01/17 13:34	linux-next	b3a3cbde	813be542	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/10/03 06:32	linux-next	2172e358	2653fa43	.config	log	report			info