BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 36s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=10 refcnt=11 in-flight: 1819:request_firmware_work_func pending: vmstat_shepherd, psi_avgs_work, 7*nsim_dev_hwstats_traffic_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=10 refcnt=11 pending: 2*psi_avgs_work, 4*ovs_dp_masks_rebalance, free_obj_work, psi_avgs_work, ovs_dp_masks_rebalance, psi_avgs_work workqueue events_long: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 6644:defense_work_handler pending: defense_work_handler pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=6 refcnt=7 pending: 6*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=28 refcnt=29 in-flight: 4686:cfg80211_wiphy_work ,12:cfg80211_wiphy_work cfg80211_wiphy_work ,7691:cfg80211_wiphy_work cfg80211_wiphy_work ,41:linkwatch_event linkwatch_event ,4862:cfg80211_wiphy_work cfg80211_wiphy_work ,42:cfg80211_wiphy_work ,14:cfg80211_wiphy_work cfg80211_wiphy_work pending: 2*nsim_dev_trap_report_work, flush_memcg_stats_dwork, nsim_dev_trap_report_work, 2*cfg80211_wiphy_work, nsim_dev_trap_report_work, 3*macvlan_process_broadcast, crng_reseed, macvlan_process_broadcast, toggle_allocation_gate, 3*nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 in-flight: 7991:cfg80211_wiphy_work ,294:cfg80211_wiphy_work pending: cfg80211_wiphy_work, 3*macvlan_process_broadcast, cfg80211_wiphy_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8 in-flight: 7990:neigh_periodic_work pending: neigh_periodic_work, neigh_managed_work, gc_worker, do_cache_clean, wg_ratelimiter_gc_entries, reg_check_chans_work workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=4 MAYDAY pending: 2*kfree_rcu_work workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 783: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=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update workqueue writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 943:wb_workfn workqueue gid-cache-wq: flags=0x20002 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=7 pending: netdevice_event_work_handler inactive: update_gid_event_work_handler, netdevice_event_work_handler, update_gid_event_work_handler workqueue krxrpcd: flags=0x2001a pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 pending: rxrpc_peer_keepalive_worker workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=60 in-flight: 4273(RESCUER):batadv_tt_purge inactive: batadv_dat_purge, batadv_bla_periodic_work, batadv_nc_worker, 5*batadv_tt_purge, batadv_dat_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_bla_periodic_work, 2*batadv_dat_purge, 2*batadv_bla_periodic_work, 2*batadv_dat_purge, batadv_nc_worker, batadv_purge_orig, 5*batadv_nc_worker, 7*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 8*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_purge_orig, batadv_tt_purge workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg1: flags=0x28 pwq 6: cpus=1 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-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-crypt-wg1: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg2: flags=0x28 pwq 6: cpus=1 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-crypt-wg2: flags=0x28 pwq 6: cpus=1 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-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 in-flight: 6639:wg_packet_tx_worker pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg1: flags=0x28 pwq 6: cpus=1 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-crypt-wg2: flags=0x28 pwq 6: cpus=1 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-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 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=1 refcnt=2 pending: wg_packet_encrypt_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg2: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg0: flags=0x24 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg0: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 24:wg_packet_encrypt_worker pending: wg_packet_tx_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: 2*wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x28 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=1s workers=9 idle: 6638 6584 6559 9 6596 10 6591 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=36s workers=6 idle: 6583 26 6619 2321 pool 8: cpus=0-1 flags=0x6 nice=0 hung=1s workers=13 manager: 7992 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 6: task:kworker/1:0 state:R running task stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5357 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6961 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:367 [inline] wg_packet_encrypt_worker+0x21c/0x11e0 drivers/net/wireguard/send.c:293 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 6: task:kworker/1:5 state:R running task stack:0 pid:6639 tgid:6639 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5357 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6961 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:257 [inline] _raw_read_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:284 wg_socket_send_skb_to_peer+0x154/0x1a4 drivers/net/wireguard/socket.c:184 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x19c/0x6c8 drivers/net/wireguard/send.c:276 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844