BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 43s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 43s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=-20 stuck for 41s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    in-flight: 22:request_firmware_work_func
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=9/256 refcnt=10
    pending: free_work, ovs_dp_masks_rebalance, vmstat_shepherd, ovs_dp_masks_rebalance, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, ovs_dp_masks_rebalance, kfree_rcu_monitor
workqueue events_long: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: defense_work_handler, defense_work_handler, defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=3
    pending: flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x82
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=3/256 refcnt=5
    pending: neigh_managed_work, neigh_periodic_work, do_cache_clean
workqueue mm_percpu_wq: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 refcnt=3
    pending: wb_workfn
workqueue gid-cache-wq: flags=0xa0002
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4
    pending: netdevice_event_work_handler
    inactive: netdevice_event_work_handler
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue krxrpcd: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=4
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker, rxrpc_peer_keepalive_worker
workqueue hci3: flags=0xa0012
  pwq 5: cpus=0-1 flags=0x4 nice=-20 active=1/1 refcnt=3
    pending: hci_cmd_timeout
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=4 idle: 24 4231 1509