syzbot

BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 174s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 201s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=5/256 refcnt=6
    in-flight: 126:request_firmware_work_func
    pending: ovs_dp_masks_rebalance, psi_avgs_work, l2cap_info_timeout, kfree_rcu_monitor
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: vmstat_shepherd, ovs_dp_masks_rebalance
workqueue events_long: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    in-flight: 7:defense_work_handler
    pending: defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/512 refcnt=5
    in-flight: 33:toggle_allocation_gate
    pending: flush_memcg_stats_dwork
workqueue events_freezable: flags=0x4
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: update_balloon_stats_func
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: gc_worker, neigh_managed_work, neigh_periodic_work, reg_check_chans_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    pending: neigh_periodic_work, neigh_managed_work, do_cache_clean, 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=1/256 refcnt=4
    pending: wb_workfn
workqueue kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256 refcnt=2
    in-flight: 52:blk_mq_timeout_work
workqueue dm_bufio_cache: flags=0x8
  pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2
    pending: addrconf_verify_work
workqueue krxrpcd: flags=0x0
  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
workqueue hci0: flags=0xa0012
  pwq 5: cpus=0-1 node=0 flags=0x4 nice=-20 active=1/1 refcnt=5
    in-flight: 4283:hci_cmd_timeout
    inactive: hci_conn_timeout
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=174s workers=3 idle: 1175 14
pool 1: cpus=0 node=0 flags=0x0 nice=-20 hung=0s workers=2 idle: 8
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=201s workers=3 idle: 26 22
pool 4: cpus=0-1 flags=0x4 nice=0 hung=201s workers=5 idle: 11 9 50 57
pool 5: cpus=0-1 node=0 flags=0x4 nice=-20 hung=0s workers=3 idle: 47 4280