BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 168s! 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: 7987:rtc_timer_do_work pending: free_obj_work, cache_reap, macvlan_process_broadcast, switchdev_deferred_process_work workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 pending: neigh_periodic_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 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 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 pending: addrconf_verify_work pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=168s workers=2 idle: 4638