BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 211s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 206s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: free_obj_work, kfree_rcu_monitor
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=2
    in-flight: 802:toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=6/256 refcnt=7
    pending: 2*neigh_managed_work, 2*neigh_periodic_work, do_cache_clean, gc_worker
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=4
    pending: vmstat_update, lru_add_drain_per_cpu BAR(32)
workqueue kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=2/256 refcnt=3
    pending: blk_mq_timeout_work, blk_mq_requeue_work
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 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=14 idle: 1193 1105 1032 362 829 13 386 42 1271 1215 371 11 876
Showing backtraces of running workers in stalled CPU-bound worker pools: