BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 49s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 49s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 49s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 50s!
BUG: workqueue lockup - pool cpus=0-1 node=0 flags=0x4 nice=-20 stuck for 48s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=11 refcnt=12
    pending: vmstat_shepherd, psi_avgs_work, 2*l2cap_info_timeout, ovs_dp_masks_rebalance, 2*l2cap_info_timeout, 3*ovs_dp_masks_rebalance, kfree_rcu_monitor
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6
    in-flight: 2245:request_firmware_work_func
    pending: ovs_dp_masks_rebalance, l2cap_info_timeout, ovs_dp_masks_rebalance, kfree_rcu_monitor
workqueue events_long: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4
    pending: 3*defense_work_handler
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4
    pending: 3*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=3 refcnt=4
    pending: toggle_allocation_gate, flush_memcg_stats_dwork, crng_reseed
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3
    pending: neigh_periodic_work, gc_worker
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=5 refcnt=6
    pending: 2*neigh_managed_work, neigh_periodic_work, do_cache_clean, reg_check_chans_work
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: vmstat_update
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: vmstat_update
workqueue writeback: flags=0x4a
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2
    pending: wb_workfn
workqueue kblockd: flags=0x18
  pwq 7: cpus=1 node=0 flags=0x0 nice=-20 active=1 refcnt=2
    pending: blk_mq_timeout_work
workqueue dm_bufio_cache: flags=0x8
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: work_fn
workqueue krxrpcd: flags=0x2001a
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=9
    pending: rxrpc_peer_keepalive_worker
    inactive: 5*rxrpc_peer_keepalive_worker
workqueue hci0: flags=0x20012
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4
    pending: hci_cmd_timeout
workqueue hci4: flags=0x20012
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4
    pending: hci_cmd_timeout
workqueue hci1: flags=0x20012
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4
    pending: hci_cmd_timeout
workqueue hci2: flags=0x20012
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4
    pending: hci_cmd_timeout
workqueue hci3: flags=0x20012
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4
    pending: hci_cmd_timeout
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=49s workers=3 idle: 27 25
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 6:
task:kworker/1:2     state:R  running task     stack:0     pid:2245  tgid:2245  ppid:2      flags:0x00000008
Workqueue: events request_firmware_work_func
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x13d4/0x2418 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6621
 schedule_timeout+0x1cc/0x33c kernel/time/timer.c:2581
 do_wait_for_common+0x30c/0x468 kernel/sched/completion.c:95
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_killable_timeout+0x50/0x74 kernel/sched/completion.c:288
 __fw_state_wait_common drivers/base/firmware_loader/firmware.h:104 [inline]
 fw_sysfs_wait_timeout drivers/base/firmware_loader/fallback.c:44 [inline]
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:110 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:162 [inline]
 firmware_fallback_sysfs+0x528/0x918 drivers/base/firmware_loader/fallback.c:238
 _request_firmware+0xd1c/0xf7c drivers/base/firmware_loader/main.c:914
 request_firmware_work_func+0xfc/0x214 drivers/base/firmware_loader/main.c:1165
 process_one_work+0x79c/0x15b8 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x938/0xebc kernel/workqueue.c:3390
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860