BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 33s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: nsim_dev_hwstats_traffic_work, vmstat_shepherd pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=15 refcnt=16 pending: 6*nsim_dev_hwstats_traffic_work, ovs_dp_masks_rebalance, 2*psi_avgs_work, free_obj_work, 4*ovs_dp_masks_rebalance, psi_avgs_work workqueue events_long: flags=0x0 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: 5*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=18 refcnt=19 in-flight: 735:cfg80211_wiphy_work cfg80211_wiphy_work ,287:nsim_dev_trap_report_work ,4351:cfg80211_wiphy_work cfg80211_wiphy_work ,14:cfg80211_wiphy_work cfg80211_wiphy_work ,2188:cfg80211_wiphy_work cfg80211_wiphy_work ,266:nsim_dev_trap_report_work pending: toggle_allocation_gate, 4*nsim_dev_trap_report_work, macvlan_process_broadcast, flush_memcg_stats_dwork, nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8 in-flight: 146:linkwatch_event linkwatch_event ,12:cfg80211_wiphy_work cfg80211_wiphy_work ,649:cfg80211_wiphy_work cfg80211_wiphy_work pending: crng_reseed workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 in-flight: 4368:neigh_managed_work ,4409:gc_worker pending: neigh_periodic_work, neigh_managed_work, hash_netportnet4_gc, wg_ratelimiter_gc_entries pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 4425:neigh_periodic_work workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 45: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 kblockd: flags=0x18 pwq 3: cpus=0 node=0 flags=0x0 nice=-20 active=1 refcnt=2 pending: blk_mq_timeout_work workqueue dm_bufio_cache: flags=0x8 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: work_fn workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=5 in-flight: 44:addrconf_verify_work inactive: addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=54 in-flight: 4221(RESCUER):batadv_tt_purge inactive: batadv_tt_purge, batadv_dat_purge, 3*batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_tt_purge, batadv_nc_worker, 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_dat_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, 5*batadv_nc_worker, 6*batadv_mcast_mla_update, 7*batadv_iv_send_outstanding_bat_ogm_packet, 6*batadv_purge_orig, 7*batadv_iv_send_outstanding_bat_ogm_packet 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=4 refcnt=5 in-flight: 24:wg_packet_decrypt_worker pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_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_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_tx_worker, wg_packet_encrypt_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_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=0x24 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_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_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_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=33s workers=6 idle: 6543 26 6541 2301 6542 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=15 manager: 9537 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-wg2 wg_packet_decrypt_worker Call trace: __switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T) context_switch kernel/sched/core.c:5382 [inline] __schedule+0x13b0/0x28d4 kernel/sched/core.c:6767 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:6947 preempt_schedule+0x60/0x80 kernel/sched/core.c:6971 __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_decrypt_worker+0x90c/0x994 drivers/net/wireguard/receive.c:499 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847