BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 161s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256
    in-flight: 12:rtc_timer_do_work
    pending: vmstat_shepherd, cache_reap, check_corruption
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: do_cache_clean
workqueue mm_percpu_wq: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1
    pending: addrconf_verify_work
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=161s workers=2 idle: 5