BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 254s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    in-flight: 3225:rtc_timer_do_work
    pending: defense_work_handler, cache_reap
workqueue events_long: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: gc_worker
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: fb_flashcursor, do_cache_clean, neigh_periodic_work, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    in-flight: 24:sync_cmos_clock
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue dm_bufio_cache: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=3 idle: 7961 3625
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=254s workers=2 idle: 18