INFO: task kworker/1:28:25488 blocked for more than 143 seconds.
      Not tainted 6.4.0-rc6-syzkaller-01339-g4931062492c5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:28    state:D stack:26720 pid:25488 ppid:2      flags:0x00004000
Workqueue: infiniband ib_cache_event_task
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
 rxe_query_port+0xa3/0x270 drivers/infiniband/sw/rxe/rxe_verbs.c:54
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x427/0x8f0 drivers/infiniband/core/device.c:2082
 ib_cache_update.part.0+0xcf/0x920 drivers/infiniband/core/cache.c:1487
 ib_cache_update drivers/infiniband/core/cache.c:1561 [inline]
 ib_cache_event_task+0x1b1/0x270 drivers/infiniband/core/cache.c:1561
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/0:24:25691 blocked for more than 145 seconds.
      Not tainted 6.4.0-rc6-syzkaller-01339-g4931062492c5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:24    state:D stack:28016 pid:25691 ppid:2      flags:0x00004000
Workqueue: infiniband ib_cache_event_task

Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
 rxe_query_port+0xa3/0x270 drivers/infiniband/sw/rxe/rxe_verbs.c:54
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x427/0x8f0 drivers/infiniband/core/device.c:2082
 ib_cache_update.part.0+0xcf/0x920 drivers/infiniband/core/cache.c:1487
 ib_cache_update drivers/infiniband/core/cache.c:1561 [inline]
 ib_cache_event_task+0x1b1/0x270 drivers/infiniband/core/cache.c:1561
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
INFO: task kworker/0:71:26352 blocked for more than 148 seconds.
      Not tainted 6.4.0-rc6-syzkaller-01339-g4931062492c5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:71    state:D stack:26720 pid:26352 ppid:2      flags:0x00004000
Workqueue: infiniband ib_cache_event_task
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5343 [inline]
 __schedule+0xc9a/0x5880 kernel/sched/core.c:6669
 schedule+0xde/0x1a0 kernel/sched/core.c:6745
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
 rxe_query_port+0xa3/0x270 drivers/infiniband/sw/rxe/rxe_verbs.c:54
 __ib_query_port drivers/infiniband/core/device.c:2060 [inline]
 ib_query_port drivers/infiniband/core/device.c:2092 [inline]
 ib_query_port+0x427/0x8f0 drivers/infiniband/core/device.c:2082
 ib_cache_update.part.0+0xcf/0x920 drivers/infiniband/core/cache.c:1487
 ib_cache_update drivers/infiniband/core/cache.c:1561 [inline]
 ib_cache_event_task+0x1b1/0x270 drivers/infiniband/core/cache.c:1561
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:1/9:
 #0: 
ffff888148250938
 ((wq_completion)infiniband
){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
, at: set_work_data kernel/workqueue.c:643 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:670 [inline]
, at: process_one_work+0x883/0x15e0 kernel/workqueue.c:2376
 #1: 
ffffc900000e7db0
 ((work_completion)(&work->work)#3){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0 kernel/workqueue.c:2380
 #2: ffff88807b039148
 (
&rxe->usdev_lock
){+.+.}-{3:3}
, at: rxe_query_port+0xa3/0x270 drivers/infiniband/sw/rxe/rxe_verbs.c:54
1 lock held by rcu_tasks_kthre/13:
 #0: 
ffffffff8c7984b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
 #0: 
ffffffff8c7981b0
 (
rcu_tasks_trace.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
 #0: ffffffff8c7990c0
 (
rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6559
2 locks held by getty/4758:
 #0: ffff88814caf8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2176
3 locks held by kworker/u4:14/5626:
3 locks held by kworker/u4:15/5628: