BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 152s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=11 refcnt=12 pending: psi_avgs_work, 6*nsim_dev_hwstats_traffic_work, vmstat_shepherd, ovs_dp_masks_rebalance, ima_keys_handler, delayed_vfree_work pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=30 refcnt=31 in-flight: 75:nsim_fib_event_work ,120:nsim_fib_event_work ,5876:nsim_fib_event_work ,5875:nsim_fib_event_work ,24:nsim_fib_event_work ,5824:nsim_fib_event_work pending: 4*nsim_fib_event_work, 4*nsim_dev_hwstats_traffic_work, 4*psi_avgs_work, 5*ovs_dp_masks_rebalance, pcpu_balance_workfn, psi_avgs_work, 3*nsim_fib_event_work, free_obj_work, delayed_vfree_work workqueue events_long: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: 3*defense_work_handler pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=7 refcnt=8 pending: 7*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x4 nice=0 active=9 refcnt=10 in-flight: 7721:cfg80211_wiphy_work cfg80211_wiphy_work ,7436:cfg80211_wiphy_work cfg80211_wiphy_work ,7720:cfg80211_wiphy_work ,1087:fsnotify_mark_destroy_workfn pending: 3*cfg80211_wiphy_work pwq 8: cpus=0-1 flags=0x4 nice=0 active=26 refcnt=27 in-flight: 36:nsim_dev_trap_report_work ,12:toggle_allocation_gate ,3492:nsim_dev_trap_report_work pending: cfg80211_wiphy_work, 8*nsim_dev_trap_report_work, macvlan_process_broadcast, 3*cfg80211_wiphy_work, flush_memcg_stats_dwork, 5*macvlan_process_broadcast, cfg80211_wiphy_work, 3*macvlan_process_broadcast workqueue events_freezable: flags=0x4 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: update_balloon_stats_func workqueue events_power_efficient: flags=0x80 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=7 refcnt=8 pending: do_cache_clean, neigh_managed_work, neigh_periodic_work, 4*check_lifetime pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=11 refcnt=12 in-flight: 5874:neigh_periodic_work ,5902:reg_check_chans_work pending: gc_worker, wg_ratelimiter_gc_entries, neigh_managed_work, 6*check_lifetime workqueue rcu_gp: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 9:srcu_invoke_callbacks pending: process_srcu workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: kfree_rcu_monitor pwq 8: cpus=0-1 flags=0x4 nice=0 active=3 refcnt=4 pending: 2*kfree_rcu_work, kfree_rcu_monitor workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=4 in-flight: 52:cleanup_net workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: vmstat_update workqueue writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wb_workfn workqueue mld: flags=0x40008 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=26 pending: mld_ifc_work inactive: mld_ifc_work, 3*mld_dad_work, 2*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 5*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 3*mld_ifc_work, mld_dad_work pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=23 MAYDAY pending: mld_ifc_work inactive: 17*mld_ifc_work, mld_dad_work, 2*mld_ifc_work workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=65 in-flight: 7435:addrconf_dad_work inactive: 53*addrconf_dad_work, 8*addrconf_verify_work workqueue krxrpcd: flags=0x2001a pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=9 pending: rxrpc_peer_keepalive_worker inactive: 5*rxrpc_peer_keepalive_worker workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=60 in-flight: 5985:batadv_tt_purge inactive: 5*batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_dat_purge, batadv_bla_periodic_work, 7*batadv_nc_worker, 7*batadv_mcast_mla_update, 3*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 10*batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge workqueue hci5: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 54:hci_cmd_sync_work workqueue hci6: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 5826:hci_cmd_sync_work workqueue hci7: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 5835:hci_cmd_sync_work workqueue hci8: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 5840:hci_cmd_sync_work workqueue hci9: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 5829:hci_cmd_sync_work workqueue wg-kex-wg0: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue wg-kex-wg2: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg0: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x24 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=3 MAYDAY pending: wg_packet_encrypt_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=155s workers=7 idle: 5877 5916 5873 10 5930 976 pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=26s workers=9 manager: 7726 pool 8: cpus=0-1 flags=0x4 nice=0 hung=26s workers=17 idle: 2117 6706 61 7434 13 7722 7724 pool 9: cpus=0-1 node=0 flags=0x4 nice=-20 hung=26s workers=8 idle: 5838 5139 5837 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 2: task:kworker/0:0 state:R running task stack:24360 pid:9 tgid:9 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: rcu_gp srcu_invoke_callbacks Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6947 preempt_schedule+0xae/0xc0 kernel/sched/core.c:6971 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:414 local_bh_enable include/linux/bottom_half.h:33 [inline] srcu_invoke_callbacks+0x215/0x450 kernel/rcu/srcutree.c:1806 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245