BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 188s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256
    in-flight: 18:linkwatch_event, 11908:wait_rcu_exp_gp
workqueue netns: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1
    in-flight: 4860:cleanup_net
workqueue kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=1/256
    pending: blk_mq_requeue_work
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=189s workers=6 idle: 4401 9618 25 11912
pool 4: cpus=0-1 flags=0x4 nice=0 hung=4s workers=9 idle: 4225 4064 9347 5136 22 1756 876 6