BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 54s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=16 refcnt=17 in-flight: 11:request_firmware_work_func for 116s pending: psi_avgs_work, 4*nsim_dev_hwstats_traffic_work, vmstat_shepherd, 2*ovs_dp_masks_rebalance, 2*psi_avgs_work, ovs_dp_masks_rebalance, free_obj_work, 3*psi_avgs_work pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=2 refcnt=3 pending: nsim_dev_hwstats_traffic_work, destroy_super_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 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=27 refcnt=28 in-flight: 15:cfg80211_wiphy_work for 63s cfg80211_wiphy_work ,4173:cfg80211_wiphy_work for 65s cfg80211_wiphy_work ,1464:cfg80211_wiphy_work for 61s ,40:cfg80211_wiphy_work for 67s cfg80211_wiphy_work ,12:cfg80211_wiphy_work for 64s cfg80211_wiphy_work ,39:cfg80211_wiphy_work for 61s ,6071:cfg80211_wiphy_work for 27s ,142:cfg80211_wiphy_work for 63s ,1320:cfg80211_wiphy_work for 63s pending: 2*cfg80211_wiphy_work, macvlan_process_broadcast, cfg80211_wiphy_work, macvlan_process_broadcast, cfg80211_wiphy_work, macvlan_process_broadcast, cfg80211_wiphy_work, 5*macvlan_process_broadcast, cfg80211_wiphy_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 in-flight: 6072:nsim_dev_trap_report_work for 6s pending: 2*macvlan_process_broadcast, crng_reseed, toggle_allocation_gate, 4*nsim_dev_trap_report_work, flush_memcg_stats_dwork workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=9 refcnt=10 in-flight: 1221:neigh_periodic_work for 22s pending: wg_ratelimiter_gc_entries, do_cache_clean, gc_worker, neigh_periodic_work, fb_flashcursor, neigh_managed_work, reg_check_chans_work, neigh_managed_work workqueue mm_percpu_wq: flags=0x108 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: vmstat_update pwq 6: cpus=1 node=0 flags=0x2 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 1s pending: mayday_cursor_func workqueue krxrpcd: flags=0x2001a pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 pending: rxrpc_peer_keepalive_worker workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=45 MAYDAY in-flight: 2855(RESCUER):batadv_tt_purge for 16s pending: mayday_cursor_func inactive: 2*batadv_tt_purge, 2*batadv_purge_orig, 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_purge_orig, 4*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 3*batadv_iv_send_outstanding_bat_ogm_packet, batadv_mcast_mla_update, 11*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_tt_purge 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=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg1: flags=0x128 pwq 2: cpus=0 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 2: cpus=0 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=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_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=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 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_encrypt_worker, wg_packet_tx_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 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue wg-crypt-wg0: flags=0x128 pwq 2: cpus=0 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-crypt-wg1: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker pwq 6: cpus=1 node=0 flags=0x2 nice=0 active=1 refcnt=2 in-flight: 4832:wg_packet_tx_worker for 3s 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=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=2 refcnt=3 pending: 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=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=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_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=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: wg_packet_tx_worker, wg_packet_encrypt_worker workqueue bond2: flags=0x2000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=6 MAYDAY pending: bond_mii_monitor inactive: bond_alb_monitor pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=54s workers=10 idle: 9 4793 4833 4808 1001 4801 4800 4557 4809 pool 6: cpus=1 node=0 flags=0x2 nice=0 hung=3s workers=4 manager: 867 idle: 24 26 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=12 manager: 6073 Showing backtraces of busy workers in stalled worker pools: pool 2: task:kworker/0:1 state:R running task stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:810 (T) context_switch kernel/sched/core.c:5388 [inline] __schedule+0x1c04/0x2db8 kernel/sched/core.c:7189 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7370 preempt_schedule+0x60/0x78 kernel/sched/core.c:7394 irq_work_queue+0xa0/0xa4 kernel/irq_work.c:125 nbcon_kthreads_wake+0x108/0x1f0 kernel/printk/nbcon.c:1339 vprintk_emit+0x1f0/0x514 kernel/printk/printk.c:2461 vprintk_default+0x54/0x80 kernel/printk/printk.c:2494 vprintk+0x9c/0x114 kernel/printk/printk_safe.c:82 _printk+0xe0/0x130 kernel/printk/printk.c:2504 regdb_fw_cb+0x190/0x1a8 net/wireless/reg.c:-1 request_firmware_work_func+0xe8/0x19c drivers/base/firmware_loader/main.c:1152 process_one_work kernel/workqueue.c:3314 [inline] process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3397 worker_thread+0x798/0xbd0 kernel/workqueue.c:3478 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842