BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 162s! BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 157s! BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 162s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 pending: vmstat_shepherd, dst_gc_task workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 pending: fsnotify_mark_destroy_workfn workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 pending: gc_worker, neigh_periodic_work, check_lifetime workqueue writeback: flags=0x4e pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/256 pending: wb_workfn workqueue kblockd: flags=0x18 pwq 3: cpus=1 node=0 flags=0x0 nice=-20 active=3/256 pending: blk_mq_timeout_work, cfq_kick_queue, blk_delay_work workqueue vmstat: flags=0xc pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 pending: vmstat_update