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