BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 189s!
INFO: task kworker/u4:2:362 blocked for more than 140 seconds.
Showing busy workqueues and worker pools:
      Not tainted 4.14.137+ #29
workqueue events: flags=0x0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:2    D
  pwq 0:
25472   362      2 0x80000000
 cpus=0 node=0 flags=0x0 nice=0 active=6/256
    in-flight: 28328:rtc_timer_do_work
Workqueue: events_unbound fsnotify_connector_destroy_workfn
    pending:
 vmstat_shepherd
Call Trace:
, free_obj_work
, proc_cleanup_work
, proc_cleanup_work, proc_cleanup_work
workqueue events_unbound: flags=0x2
  pwq 4:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 cpus=0-1
 schedule_timeout+0x752/0xe90 kernel/time/timer.c:1721
 flags=0x4 nice=0
 active=4/512
    in-flight: 22831:fsnotify_mark_destroy_workfn fsnotify_mark_destroy_workfn BAR(4203), 362:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn

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