BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 31s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=7 refcnt=8 pending: 3*nsim_dev_hwstats_traffic_work, psi_avgs_work, 3*ovs_dp_masks_rebalance pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=12 refcnt=13 in-flight: 26:drm_fb_helper_damage_work for 57s drm_fb_helper_damage_work pending: 2*nsim_dev_hwstats_traffic_work, free_obj_work, 4*psi_avgs_work, 3*ovs_dp_masks_rebalance workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=30 refcnt=31 in-flight: 13:cfg80211_wiphy_work for 68s cfg80211_wiphy_work ,3331:cfg80211_wiphy_work for 71s cfg80211_wiphy_work ,426:cfg80211_wiphy_work for 66s cfg80211_wiphy_work ,12:cfg80211_wiphy_work for 68s cfg80211_wiphy_work ,407:cfg80211_wiphy_work for 68s cfg80211_wiphy_work ,49:cfg80211_wiphy_work for 50s cfg80211_wiphy_work ,3394:cfg80211_wiphy_work for 47s cfg80211_wiphy_work ,8659:nsim_dev_trap_report_work for 1s ,367:cfg80211_wiphy_work for 68s cfg80211_wiphy_work ,40:cfg80211_wiphy_work for 67s cfg80211_wiphy_work ,3266:cfg80211_wiphy_work for 52s cfg80211_wiphy_work pending: nsim_dev_trap_report_work, toggle_allocation_gate, 2*macvlan_process_broadcast, 2*nsim_dev_trap_report_work, flush_memcg_stats_dwork, macvlan_process_broadcast, 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=10 refcnt=11 in-flight: 3577:neigh_periodic_work for 59s ,3521:reg_check_chans_work for 5s pending: hash_ipportnet4_gc, nf_flow_offload_work_gc, gc_worker, fb_flashcursor, neigh_periodic_work, wg_ratelimiter_gc_entries, 2*neigh_managed_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 pending: check_lifetime workqueue events_dfl_long: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: 6*defense_work_handler workqueue mm_percpu_wq: flags=0x108 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=4 pending: vmstat_update, lru_add_drain_per_cpu BAR(4708) workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=45 MAYDAY in-flight: 2852(RESCUER):batadv_tt_purge for 10s pending: mayday_cursor_func inactive: batadv_mcast_mla_update, 2*batadv_tt_purge, 2*batadv_mcast_mla_update, 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, batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_mcast_mla_update, 3*batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 14*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_tt_purge workqueue hci0: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4715:hci_cmd_sync_work for 4s workqueue hci2: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4724:hci_cmd_sync_work for 4s workqueue hci3: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 4713:hci_cmd_sync_work for 4s 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_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_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 9:wg_packet_handshake_receive_worker for 5s 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 in-flight: 4821:wg_packet_decrypt_worker for 69s wg_packet_decrypt_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-wg0: flags=0x124 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=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=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 64:wg_packet_handshake_send_worker for 6s workqueue wg-crypt-wg1: 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-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 4812:wg_packet_handshake_receive_worker for 35s 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_decrypt_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_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 4710:wg_packet_handshake_receive_worker for 2s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 in-flight: 24:wg_packet_handshake_receive_worker for 31s 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 workqueue wg-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_tx_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-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_tx_worker, wg_packet_encrypt_worker 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-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-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 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_decrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=0s workers=7 idle: 1093 4796 4811 10 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=31s workers=7 idle: 4830 4810 868 4803 pool 8: cpus=0-1 flags=0x6 nice=0 hung=1s workers=15 manager: 8660 pool 9: cpus=0-1 node=0 flags=0x4 nice=-20 hung=0s workers=8 idle: 4720 4722 4723 4712 51 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:0 state:R running task stack:0 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x20000010 Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 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+0x11c/0x39c lib/crypto/poly1305.c:50 __chacha20poly1305_decrypt+0x26c/0x39c lib/crypto/chacha20poly1305.c:153 chacha20poly1305_decrypt+0x238/0x5e4 lib/crypto/chacha20poly1305.c:186 message_decrypt+0x50/0x90 drivers/net/wireguard/noise.c:477 wg_noise_handshake_consume_initiation+0x1fc/0x53c drivers/net/wireguard/noise.c:628 wg_receive_handshake_packet drivers/net/wireguard/receive.c:144 [inline] wg_packet_handshake_receive_worker+0x54c/0xcf8 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 6: task:kworker/1:5 state:R running task stack:0 pid:4821 tgid:4821 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg2 wg_packet_decrypt_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7449 preempt_schedule+0x60/0x78 kernel/sched/core.c:7473 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:480 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:237 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:245 spin_unlock_bh include/linux/spinlock.h:407 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:399 [inline] wg_packet_decrypt_worker+0x980/0xa00 drivers/net/wireguard/receive.c:499 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838 pool 6: task:kworker/1:1 state:R running task stack:0 pid:26 tgid:26 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events drm_fb_helper_damage_work Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5520 [inline] __schedule+0x1370/0x2d80 kernel/sched/core.c:7270 __schedule_loop kernel/sched/core.c:7347 [inline] schedule+0x13c/0x20c kernel/sched/core.c:7362 schedule_timeout+0x13c/0x28c kernel/time/sleep_timeout.c:99 drm_crtc_wait_one_vblank+0x19c/0x440 drivers/gpu/drm/drm_vblank.c:1325 drm_client_modeset_wait_for_vblank+0xc4/0xec drivers/gpu/drm/drm_client_modeset.c:1331 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:327 [inline] drm_fb_helper_damage_work+0x520/0xbc0 drivers/gpu/drm/drm_fb_helper.c:365 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3470 worker_thread+0x798/0xbd0 kernel/workqueue.c:3551 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:838