INFO: task kworker/u4:1:26 blocked for more than 143 seconds.
      Not tainted 5.19.0-rc8-next-20220728 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1    state:D stack:24720 pid:   26 ppid:     2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
 <TASK>
 __schedule+0x88d/0x2490
 schedule+0xda/0x1b0
 schedule_timeout+0x3ad/0x480
 __wait_for_common+0x1c3/0x4c0
 io_ring_exit_work+0x4aa/0xc2d
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>

Showing all threads with locks held in the system:
task:rcu_tasks_kthre state:I stack:29424 pid:   11 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x88d/0x2490
 schedule+0xda/0x1b0
 rcu_tasks_one_gp+0x3db/0xc10
 rcu_tasks_kthread+0x80/0xa0
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
1 lock held by rcu_tasks_kthre/11:
 #0: ffffffff85404750 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc10
task:kworker/u4:1    state:D stack:24720 pid:   26 ppid:     2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
Call Trace:
 <TASK>
 __schedule+0x88d/0x2490
 schedule+0xda/0x1b0
 schedule_timeout+0x3ad/0x480
 __wait_for_common+0x1c3/0x4c0
 io_ring_exit_work+0x4aa/0xc2d
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
2 locks held by kworker/u4:1/26:
 #0: ffff888007c61138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x90d/0x1690
 #1: ffff88800903fdb0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x941/0x1690
task:in:imklog       state:R  running task     stack:28504 pid:  187 ppid:     1 flags:0x00000000
Call Trace:
 <TASK>
 __schedule+0x88d/0x2490
 schedule+0xda/0x1b0
 syslog_print+0x1c2/0x590
 do_syslog.part.0+0x276/0x6a0
 do_syslog+0x49/0x70
 kmsg_read+0x8a/0xb0
 proc_reg_read+0x11c/0x300
 vfs_read+0x253/0x930
 ksys_read+0x127/0x250
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f491389208c
RSP: 002b:00007f4912e2e4d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f491389208c
RDX: 0000000000001fa0 RSI: 00007f4912e2ed00 RDI: 0000000000000005
RBP: 00005565049814c0 R08: 0000000000000000 R09: 000055650497de88
R10: a3d70a3d70a3d70b R11: 0000000000000246 R12: 00007f4912e2ed00
R13: 0000000000001fa0 R14: 00007f4912e2ed00 R15: 00007f4912e2f0cc
 </TASK>
1 lock held by in:imklog/187:
task:kworker/u4:6    state:R  running task     stack:25296 pid:  377 ppid:     2 flags:0x00004000
Workqueue:  0x0 (phy15)
Call Trace:
 <TASK>
 __schedule+0x88d/0x2490
 schedule+0xda/0x1b0
 worker_thread+0x15f/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30
 </TASK>
no locks held by kworker/u4:6/377.

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