INFO: task kworker/u4:8:6260 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc7-syzkaller-g327bf9bb94cf #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8    state:D stack:0     pid:6260  ppid:2      flags:0x00000008
Workqueue: events_unbound io_ring_exit_work
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0x103c/0x1e2c kernel/sched/core.c:6625
 schedule+0xc4/0x170 kernel/sched/core.c:6701
 schedule_timeout+0xb8/0x348 kernel/time/timer.c:2143
 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
 io_ring_exit_work+0x600/0x6ec io_uring/io_uring.c:3027
 process_one_work+0x788/0x12d4 kernel/workqueue.c:2390
 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2537
 kthread+0x24c/0x2d4 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffff800015e4f0d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffff800015e4f8d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x44/0xcf4 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffff800015e4ef00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:326
1 lock held by udevd/5519:
2 locks held by getty/5669:
 #0: ffff0000cdc27098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80001aad02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1210 drivers/tty/n_tty.c:2177
3 locks held by kworker/1:4/6094:
 #0: ffff0000c0020d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363
 #1: ffff80001ecf7c20 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365
 #2: ffff800015cff010 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_lock_wait+0x138/0x244 kernel/umh.c:247
2 locks held by kworker/u4:8/6260:
 #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363
 #1: ffff80001e107c20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365
2 locks held by kworker/u4:11/6448:
 #0: ffff0000c0029138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363
 #1: ffff0000c539a760 (&mm->cid_lock){....}-{2:2}, at: mm_cid_get+0x17c/0x394 kernel/sched/sched.h:3280
2 locks held by kworker/u4:12/6450:
5 locks held by kworker/1:13/10459:
 #0: ffff0000c13f7938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x664/0x12d4 kernel/workqueue.c:2363
 #1: ffff8000262d7c20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x6a8/0x12d4 kernel/workqueue.c:2365
 #2: ffff0000ce86a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #2: ffff0000ce86a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c8/0x474c drivers/usb/core/hub.c:5739
 #3: ffff0000d00f0190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #3: ffff0000d00f0190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xec/0x7b0 drivers/usb/core/hub.c:2229
 #4: ffff00012ca2a118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #4: ffff00012ca2a118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline]
 #4: ffff00012ca2a118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xbc/0x6a0 drivers/base/dd.c:1260
2 locks held by udevd/11018:
 #0: ffff0001b42a0818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:539 [inline]
 #0: ffff0001b42a0818 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1366 [inline]
 #0: ffff0001b42a0818 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1653 [inline]
 #0: ffff0001b42a0818 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2bc/0x1e2c kernel/sched/core.c:6542
 #1: ffff0000d828a760 (&mm->cid_lock#2){....}-{2:2}, at: mm_cid_put+0x188/0x328 kernel/sched/sched.h:3270
1 lock held by syz-executor.2/14771:
 #0: ffff800015e54240 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x58/0x534 kernel/rcu/tree.c:3956
2 locks held by syz-executor.4/14810:
1 lock held by dhcpcd/14814:
 #0: ffff00013f1ba130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1697 [inline]
 #0: ffff00013f1ba130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x44/0xb08 net/packet/af_packet.c:3193

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