BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 50s!
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 44s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 50s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 50s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=11/256 refcnt=12
    pending: psi_avgs_work, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, hci_cmd_timeout, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, l2cap_info_timeout, ovs_dp_masks_rebalance, ovs_dp_masks_rebalance
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=5/256 refcnt=6
    pending: vmstat_shepherd, hci_cmd_timeout, ovs_dp_masks_rebalance, l2cap_info_timeout, ovs_dp_masks_rebalance
workqueue events_long: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: defense_work_handler, defense_work_handler, defense_work_handler
  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=6/256 refcnt=8
    pending: fb_flashcursor, crda_timeout_work, gc_worker, neigh_periodic_work, neigh_periodic_work, do_cache_clean
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
  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 kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    pending: blk_mq_timeout_work
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 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=3
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=3
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker