BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 277s! BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 277s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=8/256 refcnt=9 pending: kfree_rcu_monitor, usb_gadget_state_work, free_work, usb_gadget_state_work, usb_gadget_state_work, usb_gadget_state_work, cache_reap, check_corruption pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=10/256 refcnt=11 pending: delayed_fput, rht_deferred_worker, kfree_rcu_monitor, free_work, usb_gadget_state_work, usb_gadget_state_work, psi_avgs_work, defense_work_handler, vmstat_shepherd, cache_reap workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=7/256 refcnt=8 pending: gc_worker, fb_flashcursor, neigh_periodic_work, do_cache_clean, neigh_periodic_work, check_lifetime, sync_hw_clock workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 pending: vmstat_update, lru_add_drain_per_cpu pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=4 pending: vmstat_update, lru_add_drain_per_cpu BAR(1154) workqueue cgroup_pidlist_destroy: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 pending: cgroup_pidlist_destroy_work_fn workqueue usb_hub_wq: flags=0x4 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=8/256 refcnt=9 in-flight: 6813:hub_event hub_event, 3839:hub_event hub_event, 6806:hub_event hub_event, 2481:hub_event hub_event pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5 in-flight: 5:hub_event hub_event, 2501: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 workqueue krxrpcd: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 pending: rxrpc_peer_keepalive_worker pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=278s workers=4 idle: 6819 6810 pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=278s workers=6 idle: 6818 6816