BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 213s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256 refcnt=4 in-flight: 21684:linkwatch_event linkwatch_event, 23270:switchdev_deferred_process_work pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 pending: defense_work_handler, defense_work_handler workqueue events_freezable: flags=0x4 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: update_balloon_stats_func workqueue rcu_gp: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 in-flight: 18248:wait_rcu_exp_gp pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 in-flight: 12103:wait_rcu_exp_gp workqueue cfg80211: flags=0xa000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=4 in-flight: 16813:cfg80211_dfs_channels_update_work workqueue ipv6_addrconf: flags=0x40008 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 in-flight: 10777:addrconf_dad_work pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 in-flight: 4880:addrconf_verify_work workqueue krxrpcd: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=2 pending: rxrpc_peer_keepalive_worker workqueue bat_events: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=12 in-flight: 16256:batadv_nc_worker delayed: batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_nc_worker, batadv_iv_send_outstanding_bat_ogm_packet, batadv_iv_send_outstanding_bat_ogm_packet workqueue phy15: flags=0xa0002 pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=5 in-flight: 1001:ieee80211_iface_work delayed: ieee80211_iface_work pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=4 idle: 18324 25867 pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=213s workers=5 idle: 12025 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=9 idle: 9511 381 537 6612 26172 93