kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 258s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 258s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 258s!
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
    pending: key_garbage_collector
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: vmstat_shepherd, bpf_map_free_deferred, destroy_list_workfn, psi_avgs_work
workqueue events_long: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: br_fdb_cleanup
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: br_fdb_cleanup
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 refcnt=3
    pending: toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: neigh_periodic_work, gc_worker, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_ratelimiter_gc_entries, neigh_periodic_work
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=6/256 refcnt=8
    pending: wb_workfn, wb_workfn, wb_workfn, wb_workfn, wb_workfn, wb_workfn
workqueue kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=5/256 refcnt=6
    in-flight: 37:blk_mq_run_work_fn
    pending: blk_mq_timeout_work, blk_mq_timeout_work, blk_mq_timeout_work, blk_mq_timeout_work
workqueue usb_hub_wq: flags=0x4
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    in-flight: 1489:hub_event hub_event, 1703:hub_event hub_event
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 ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
pool 1: cpus=0 node=0 flags=0x0 nice=-20 hung=258s workers=2 idle: 6
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=259s workers=6 idle: 358 20 25 364