BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 175s! BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 175s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=12/256 refcnt=13 pending: nsim_dev_hwstats_traffic_work, vidtv_mux_tick, psi_avgs_work, ipvlan_process_multicast, psi_avgs_work, kfree_rcu_monitor, psi_avgs_work, ipvlan_process_multicast, 4*ovs_dp_masks_rebalance pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=10/256 refcnt=11 pending: 3*nsim_dev_hwstats_traffic_work, vmstat_shepherd, ovs_dp_masks_rebalance, 2*psi_avgs_work, kfree_rcu_monitor, 2*ipvlan_process_multicast workqueue events_long: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: defense_work_handler pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5 pending: 4*defense_work_handler workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=4/512 refcnt=5 pending: nsim_dev_trap_report_work, idle_cull_fn, crng_reseed, idle_cull_fn pwq 4: cpus=0-1 flags=0x4 nice=0 active=9/512 refcnt=10 pending: 3*nsim_dev_trap_report_work, toggle_allocation_gate, flush_memcg_stats_dwork, 2*cfg80211_wiphy_work, 2*idle_cull_fn 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=3/256 refcnt=4 pending: neigh_managed_work, neigh_periodic_work, do_cache_clean pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=7/256 refcnt=8 pending: fb_flashcursor, wg_ratelimiter_gc_entries, neigh_managed_work, neigh_periodic_work, check_lifetime, gc_worker, reg_check_chans_work 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=2 pending: wb_workfn 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=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=8 pending: addrconf_verify_work inactive: 4*addrconf_verify_work workqueue bat_events: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=39 pending: batadv_nc_worker inactive: 3*batadv_nc_worker, 4*batadv_mcast_mla_update, 2*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 8*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, 3*batadv_tt_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge Showing backtraces of running workers in stalled CPU-bound worker pools: