BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 167s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 229s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 228s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 167s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: free_obj_work, kfree_rcu_monitor
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=8/256 refcnt=9
    pending: nsim_dev_hwstats_traffic_work, nsim_dev_trap_report_work, 4*cfg80211_wiphy_work, kfree_rcu_monitor, vmstat_shepherd
workqueue events_long: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: defense_work_handler
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: 2*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=3/512 refcnt=5
    pending: toggle_allocation_gate, flush_memcg_stats_dwork, crng_reseed
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=8/256 refcnt=9
    pending: 2*neigh_managed_work, neigh_periodic_work, do_cache_clean, gc_worker, neigh_periodic_work, reg_check_chans_work, check_lifetime
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=2/256 refcnt=4
    pending: wb_update_bandwidth_workfn, wb_workfn
workqueue kblockd: flags=0x18
  pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=2/256 refcnt=3
    pending: blk_mq_requeue_work, blk_mq_timeout_work
workqueue mld: flags=0x40008
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=3
    pending: mld_ifc_work
    inactive: mld_ifc_work
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=5
    pending: addrconf_dad_work
    inactive: addrconf_dad_work, 2*addrconf_verify_work
Showing backtraces of running workers in stalled CPU-bound worker pools: