BUG: workqueue lockup - pool cpus=0 node=0 flags=0x2 nice=0 stuck for 45s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=15 refcnt=16 pending: nfc_urelease_event_work, 6*nsim_dev_hwstats_traffic_work, 3*psi_avgs_work, vmstat_shepherd, 2*psi_avgs_work, ovs_dp_masks_rebalance, key_garbage_collector pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=8 refcnt=9 pending: 3*nsim_dev_hwstats_traffic_work, 5*ovs_dp_masks_rebalance workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4 pending: 3*defense_work_handler pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=3 refcnt=4 pending: 3*defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=17 refcnt=18 in-flight: 1240:cfg80211_wiphy_work for 115s cfg80211_wiphy_work ,12:cfg80211_wiphy_work for 115s cfg80211_wiphy_work ,15:cfg80211_wiphy_work for 49s cfg80211_wiphy_work ,149:cfg80211_wiphy_work for 116s cfg80211_wiphy_work ,5162:cfg80211_wiphy_work for 105s cfg80211_wiphy_work ,4868:cfg80211_wiphy_work for 116s cfg80211_wiphy_work ,39:cfg80211_wiphy_work for 105s cfg80211_wiphy_work pending: 3*macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=16 refcnt=17 in-flight: 5168:cfg80211_wiphy_work for 116s cfg80211_wiphy_work ,5169:macvlan_process_broadcast for 3s ,40:nsim_dev_trap_report_work for 5s ,5171:cfg80211_wiphy_work for 101s cfg80211_wiphy_work ,5161:nsim_dev_trap_report_work for 18s pending: 2*nsim_dev_trap_report_work, toggle_allocation_gate, 4*nsim_dev_trap_report_work, macvlan_process_broadcast, nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5 in-flight: 5158:reg_check_chans_work for 44s ,5170:crda_timeout_work for 106s ,1842:neigh_periodic_work for 106s pending: check_lifetime pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4 in-flight: 5163:gc_worker for 30s pending: check_lifetime, wg_ratelimiter_gc_entries workqueue mm_percpu_wq: flags=0x108 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=4 MAYDAY 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=0x6 nice=0 active=1 refcnt=2 in-flight: 1346:wb_workfn for 96s workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=10 in-flight: 5157:addrconf_dad_work for 113s inactive: 2*addrconf_dad_work, 4*addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=43 MAYDAY in-flight: 2856(RESCUER):batadv_tt_purge for 5s pending: mayday_cursor_func inactive: batadv_bla_periodic_work, batadv_dat_purge, batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_mcast_mla_update, batadv_dat_purge, batadv_bla_periodic_work, 4*batadv_mcast_mla_update, 4*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig, 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 7*batadv_iv_send_outstanding_bat_ogm_packet, batadv_bla_periodic_work, batadv_dat_purge, batadv_purge_orig, 3*batadv_tt_purge workqueue hci4: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4708:hci_cmd_sync_work for 45s workqueue wg-kex-wg0: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 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=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 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 in-flight: 1967:wg_packet_handshake_receive_worker for 8s workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=5 MAYDAY in-flight: 4719:wg_packet_tx_worker for 48s pending: wg_packet_encrypt_worker workqueue hci0: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4716:hci_cmd_sync_work for 33s workqueue wg-kex-wg0: flags=0x124 pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 4806:wg_packet_handshake_receive_worker for 5s workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_tx_worker, wg_packet_decrypt_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-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=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=4 refcnt=7 MAYDAY in-flight: 4811:wg_packet_tx_worker for 56s wg_packet_tx_worker pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 10:wg_packet_handshake_receive_worker for 45s 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-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY in-flight: 9:wg_packet_tx_worker for 57s pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue bond1: flags=0x2000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=7 MAYDAY pending: bond_mii_monitor inactive: bond_alb_monitor workqueue hci5: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 50:hci_cmd_sync_work for 18s workqueue wg-kex-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 5160:wg_packet_handshake_send_worker for 31s workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=2 refcnt=4 MAYDAY pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 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-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY 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=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 867:wg_packet_handshake_receive_worker for 46s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=5 MAYDAY pending: wg_packet_encrypt_worker, wg_packet_tx_worker workqueue hci1: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4718:hci_cmd_sync_work for 13s 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=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 4799:wg_packet_handshake_receive_worker for 91s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY 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=2 in-flight: 4354:wg_packet_encrypt_worker for 8s workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 4833:wg_packet_handshake_receive_worker for 55s pending: wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 4820:wg_packet_handshake_receive_worker for 27s workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=4 MAYDAY pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue hci2: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4723:hci_cmd_sync_work for 1s workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_tx_worker, wg_packet_decrypt_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-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 1100:wg_packet_handshake_receive_worker for 50s pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=6 MAYDAY pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 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=0x6 nice=0 active=1 refcnt=2 in-flight: 5165:wg_packet_handshake_send_worker for 1s workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=5 MAYDAY pending: wg_packet_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x2 nice=0 hung=45s workers=9 manager: 8618 pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=5s workers=8 manager: 26 idle: 4894 24 4983 pool 8: cpus=0-1 flags=0x6 nice=0 hung=1s workers=21 manager: 5164 pool 9: cpus=0-1 node=0 flags=0x4 nice=-20 hung=0s workers=7 idle: 4713 4710 Showing backtraces of busy workers in stalled worker pools: pool 2: task:kworker/0:1 state:R running task stack:0 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_session_derived+0x5c/0x6c drivers/net/wireguard/timers.c:208 wg_packet_send_handshake_response+0x118/0x260 drivers/net/wireguard/send.c:98 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x550/0xcb8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 2: task:kworker/0:4 state:R running task stack:0 pid:4719 tgid:4719 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg2 wg_packet_tx_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_any_authenticated_packet_traversal+0x98/0xc0 drivers/net/wireguard/timers.c:218 wg_packet_create_data_done drivers/net/wireguard/send.c:247 [inline] wg_packet_tx_worker+0x118/0x730 drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 2: task:kworker/0:6 state:R running task stack:0 pid:4811 tgid:4811 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg1 wg_packet_tx_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] keep_key_fresh drivers/net/wireguard/send.c:135 [inline] wg_packet_create_data_done drivers/net/wireguard/send.c:259 [inline] wg_packet_tx_worker+0x4f4/0x730 drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 2: task:kworker/0:5 state:R running task stack:0 pid:4799 tgid:4799 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:912 [inline] mod_peer_timer+0x21c/0x25c drivers/net/wireguard/timers.c:38 wg_timers_session_derived+0x5c/0x6c drivers/net/wireguard/timers.c:208 wg_packet_send_handshake_response+0x118/0x260 drivers/net/wireguard/send.c:98 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x550/0xcb8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 2: task:kworker/0:7 state:R running task stack:0 pid:4833 tgid:4833 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1bec/0x2dcc kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:196 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:214 spin_unlock_bh include/linux/spinlock.h:396 [inline] wg_index_hashtable_insert+0xe8/0x7f8 drivers/net/wireguard/peerlookup.c:126 wg_noise_handshake_create_response+0x270/0x438 drivers/net/wireguard/noise.c:713 wg_packet_send_handshake_response+0xe8/0x260 drivers/net/wireguard/send.c:94 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x550/0xcb8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397 worker_thread+0x754/0xba0 kernel/workqueue.c:3478 kthread+0x2f8/0x3c8 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 2: task:kworker/0:3 state:R running task stack:0 pid:1100 tgid:1100 ppid:2 task_flags:0x4208060 flags:0x00000010