BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 41s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=18 refcnt=19 pending: vmstat_shepherd, 9*nsim_dev_hwstats_traffic_work, 5*ovs_dp_masks_rebalance, 3*psi_avgs_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: free_obj_work, delayed_vfree_work, 2*ovs_dp_masks_rebalance, psi_avgs_work workqueue events_long: flags=0x100 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: 2*br_fdb_cleanup workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=36 refcnt=37 in-flight: 6710:nsim_dev_trap_report_work for 9s ,2699:cfg80211_wiphy_work for 55s cfg80211_wiphy_work ,5471:cfg80211_wiphy_work for 48s cfg80211_wiphy_work ,2658:cfg80211_wiphy_work for 52s cfg80211_wiphy_work ,117:cfg80211_wiphy_work for 54s cfg80211_wiphy_work ,8898:cfg80211_wiphy_work for 54s cfg80211_wiphy_work ,13:cfg80211_wiphy_work for 52s cfg80211_wiphy_work ,6711:cfg80211_wiphy_work for 43s cfg80211_wiphy_work ,6713:cfg80211_wiphy_work for 51s cfg80211_wiphy_work ,6716:cfg80211_wiphy_work for 54s cfg80211_wiphy_work ,1329:nsim_dev_trap_report_work for 1s ,66:cfg80211_wiphy_work for 48s cfg80211_wiphy_work ,5911:nsim_dev_trap_report_work for 20s ,8899:cfg80211_wiphy_work for 48s cfg80211_wiphy_work pending: 3*macvlan_process_broadcast, nsim_dev_trap_report_work, macvlan_process_broadcast, 3*nsim_dev_trap_report_work, toggle_allocation_gate, 2*nsim_dev_trap_report_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4 in-flight: 42:cfg80211_wiphy_work for 5s ,12:cfg80211_wiphy_work for 48s cfg80211_wiphy_work workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 in-flight: 6712:neigh_periodic_work for 1s ,5977:gc_worker for 10s pending: wg_ratelimiter_gc_entries, neigh_periodic_work, do_cache_clean, reg_check_chans_work workqueue events_dfl_long: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=8 refcnt=9 pending: 8*defense_work_handler workqueue netns: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 in-flight: 40:cleanup_net for 58s workqueue mm_percpu_wq: flags=0x108 pwq 2: cpus=0 node=0 flags=0x2 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=4 MAYDAY in-flight: 33(RESCUER):wb_workfn for 34s workqueue xprtiod: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 5912:xs_tcp_tls_setup_socket for 193s workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=53 MAYDAY in-flight: 2880(RESCUER):batadv_tt_purge for 14s inactive: 4*batadv_tt_purge, 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, batadv_bla_periodic_work, batadv_dat_purge, 5*batadv_mcast_mla_update, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 6*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge 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=0x2 nice=0 active=1 refcnt=2 in-flight: 4411:wg_packet_handshake_receive_worker for 17s pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: wg_packet_handshake_receive_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=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_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 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_decrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 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_decrypt_worker, wg_packet_encrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker 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-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 10:wg_packet_encrypt_worker for 8s 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-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-crypt-wg0: flags=0x128 pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=4 refcnt=5 in-flight: 8897:wg_packet_encrypt_worker for 42s pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker workqueue wg-kex-wg0: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 1162:wg_packet_handshake_receive_worker for 13s 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 2: cpus=0 node=0 flags=0x2 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-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 9: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-kex-wg2: flags=0x6 pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 8901:wg_packet_handshake_send_worker for 27s workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2 pending: wg_packet_encrypt_worker 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 2: cpus=0 node=0 flags=0x2 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_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 in-flight: 4949:wg_packet_handshake_receive_worker for 11s 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_tx_worker workqueue wg-kex-wg1: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3 in-flight: 4878:wg_packet_handshake_receive_worker for 44s 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-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 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_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=3 in-flight: 9011(RESCUER):wg_packet_encrypt_worker for 2s pending: mayday_cursor_func 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=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=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_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: 4861:wg_packet_handshake_receive_worker for 26s wg_packet_handshake_receive_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3 in-flight: 875:wg_packet_handshake_receive_worker for 41s 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_tx_worker workqueue wg-kex-wg2: flags=0x124 pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 4737:wg_packet_handshake_receive_worker for 8s 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_encrypt_worker, wg_packet_tx_worker pool 2: cpus=0 node=0 flags=0x2 nice=0 hung=2s workers=10 manager: 9216 idle: 4738 pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=41s workers=9 idle: 26 8384 4850 9521 4864 24 4843 pool 8: cpus=0-1 flags=0x6 nice=0 hung=1s workers=22 manager: 9653 Showing backtraces of busy workers in stalled worker pools: pool 6: task:kworker/1:7 state:R running task stack:0 pid:8897 tgid:8897 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker Call trace: __switch_to+0x2b4/0x6e4 arch/arm64/kernel/process.c:775 (T) context_switch kernel/sched/core.c:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7463 preempt_schedule+0x60/0x78 kernel/sched/core.c:7487 __local_bh_enable_ip+0x16c/0x234 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_encrypt_worker+0x121c/0x12a0 drivers/net/wireguard/send.c:293 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 pool 6: task:kworker/1:2 state:R running task stack:0 pid:875 tgid:875 ppid:2 task_flags:0x4208060 flags:0x00000010 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:5533 [inline] __schedule+0x135c/0x2b00 kernel/sched/core.c:7284 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7463 preempt_schedule+0x60/0x78 kernel/sched/core.c:7487 __local_bh_enable_ip+0x16c/0x234 kernel/softirq.c:480 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:923 [inline] wg_noise_handshake_begin_session+0x698/0x958 drivers/net/wireguard/noise.c:857 wg_packet_send_handshake_response+0x108/0x264 drivers/net/wireguard/send.c:96 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:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854