BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 33s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 4797:reg_todo for 135s pending: nsim_dev_hwstats_traffic_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=20 refcnt=21 pending: 9*nsim_dev_hwstats_traffic_work, free_obj_work, 4*psi_avgs_work, 4*ovs_dp_masks_rebalance, delayed_vfree_work, destroy_super_work workqueue events_long: flags=0x100 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=24 refcnt=25 in-flight: 1351:cfg80211_wiphy_work for 126s cfg80211_wiphy_work ,40:nsim_dev_trap_report_work for 12s ,8140:nsim_dev_trap_report_work for 2s ,7033:cfg80211_wiphy_work for 141s cfg80211_wiphy_work ,6788:cfg80211_wiphy_work for 135s cfg80211_wiphy_work ,1307:cfg80211_wiphy_work for 133s cfg80211_wiphy_work ,39:cfg80211_wiphy_work for 131s cfg80211_wiphy_work ,7028:cfg80211_wiphy_work for 141s cfg80211_wiphy_work pending: 4*nsim_dev_trap_report_work, flush_memcg_stats_dwork, 3*nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: macvlan_process_broadcast workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8 in-flight: 1181:crda_timeout_work for 127s pending: gc_worker, wg_ratelimiter_gc_entries, neigh_periodic_work, 2*neigh_managed_work, fb_flashcursor pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 in-flight: 1381:neigh_periodic_work for 88s ,12:reg_check_chans_work for 73s workqueue mm_percpu_wq: flags=0x108 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: 4867:wb_workfn for 133s workqueue ipv6_addrconf: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=11 MAYDAY in-flight: 2820(RESCUER):addrconf_verify_work for 84s inactive: 5*addrconf_verify_work workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=39 MAYDAY in-flight: 2852(RESCUER):batadv_dat_purge for 9s pending: mayday_cursor_func inactive: 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_mcast_mla_update, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_tt_purge, batadv_mcast_mla_update, batadv_dat_purge, batadv_bla_periodic_work, batadv_tt_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_tt_purge workqueue wg-kex-wg0: flags=0x124 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 24:wg_packet_handshake_receive_worker for 56s pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg0: 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-wg0: flags=0x128 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-kex-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 8142:wg_packet_handshake_receive_worker for 15s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 4853:wg_packet_handshake_receive_worker for 33s pending: wg_packet_handshake_receive_worker workqueue wg-kex-wg1: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 in-flight: 15:wg_packet_handshake_send_worker for 11s pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 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-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 4819:wg_packet_handshake_receive_worker for 39s wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_worker workqueue wg-crypt-wg2: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue loop2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: loop_rootcg_workfn 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 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=0x128 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-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=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_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_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=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=4 refcnt=5 in-flight: 4798:wg_packet_tx_worker for 34s pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg1: flags=0x128 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 workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 10:wg_packet_handshake_receive_worker for 17s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 4812:wg_packet_handshake_receive_worker for 33s 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: 8141:wg_packet_handshake_send_worker for 2s workqueue wg-crypt-wg2: flags=0x128 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-wg0: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 3722:wg_packet_handshake_send_worker for 16s workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 in-flight: 1518:wg_packet_decrypt_worker for 33s pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-kex-wg1: flags=0x124 pwq 6: cpus=1 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=0x6 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_send_worker workqueue wg-crypt-wg1: flags=0x128 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=0x128 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 pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=8 idle: 6775 3604 4884 9 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=33s workers=9 idle: 4824 26 4805 866 pool 8: cpus=0-1 flags=0x6 nice=0 hung=2s workers=16 manager: 8143 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:4 state:R running task stack:0 pid:4798 tgid:4798 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7234 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437 __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:914 [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+0x6bc/0x75c drivers/net/wireguard/send.c:276 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 6: task:kworker/1:8 state:R running task stack:0 pid:4853 tgid:4853 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:775 (T) context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7234 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437 __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:914 [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_receive_handshake_packet drivers/net/wireguard/receive.c:178 [inline] wg_packet_handshake_receive_worker+0x5b8/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 6: task:kworker/1:3 state:R running task stack:0 pid:1518 tgid:1518 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_decrypt_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7234 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437 __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] ptr_ring_consume_bh include/linux/ptr_ring.h:393 [inline] wg_packet_decrypt_worker+0x980/0xa00 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 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-kex-wg0 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7234 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437 __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] ptr_ring_consume_bh include/linux/ptr_ring.h:393 [inline] wg_packet_handshake_receive_worker+0xc70/0xcf8 drivers/net/wireguard/receive.c:212 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842 pool 6: task:kworker/1:6 state:R running task stack:0 pid:4812 tgid:4812 ppid:2 task_flags:0x4208060 flags:0x20000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5510 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7234 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7413 preempt_schedule+0x60/0x78 kernel/sched/core.c:7437 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable include/linux/bottom_half.h:33 [inline] put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:251 [inline] kernel_neon_begin+0x29c/0x400 arch/arm64/kernel/fpsimd.c:1940 class_ksimd_constructor arch/arm64/include/asm/simd.h:48 [inline] poly1305_blocks+0x110/0x204 lib/crypto/arm64/poly1305.h:30 poly1305_update+0x168/0x39c lib/crypto/poly1305.c:59 __chacha20poly1305_encrypt+0x284/0x348 lib/crypto/chacha20poly1305.c:81 chacha20poly1305_encrypt+0x238/0x58c lib/crypto/chacha20poly1305.c:104 message_encrypt drivers/net/wireguard/noise.c:467 [inline] wg_noise_handshake_create_response+0x210/0x430 drivers/net/wireguard/noise.c:711 wg_packet_send_handshake_response+0xe8/0x264 drivers/net/wireguard/send.c:94 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x570/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842