sched: DL replenish lagged too much BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 55s! Showing busy workqueues and worker pools: workqueue events: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=14 refcnt=15 in-flight: 9:request_firmware_work_func for 116s pending: 3*nsim_dev_hwstats_traffic_work, psi_avgs_work, vmstat_shepherd, 2*psi_avgs_work, 2*ovs_dp_masks_rebalance, ipvlan_process_multicast, rht_deferred_worker, 2*psi_avgs_work pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=4 refcnt=5 pending: 3*nsim_dev_hwstats_traffic_work, free_obj_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2 pending: defense_work_handler workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=8 refcnt=9 in-flight: 39:macvlan_process_broadcast for 10s ,13:cfg80211_wiphy_work for 69s cfg80211_wiphy_work pending: 2*macvlan_process_broadcast, crng_reseed, 2*macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=28 refcnt=29 in-flight: 12:cfg80211_wiphy_work for 61s ,1193:cfg80211_wiphy_work for 70s cfg80211_wiphy_work ,5132:cfg80211_wiphy_work for 63s cfg80211_wiphy_work ,1342:cfg80211_wiphy_work for 70s cfg80211_wiphy_work ,662:cfg80211_wiphy_work for 58s ,1401:cfg80211_wiphy_work for 70s cfg80211_wiphy_work ,1320:cfg80211_wiphy_work for 61s ,40:cfg80211_wiphy_work for 62s cfg80211_wiphy_work pending: 2*cfg80211_wiphy_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work, macvlan_process_broadcast, cfg80211_wiphy_work, nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work, flush_memcg_stats_dwork, 4*nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x82 pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3 pending: neigh_periodic_work, reg_check_chans_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: wg_ratelimiter_gc_entries, neigh_periodic_work, neigh_managed_work, do_cache_clean, gc_worker, 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 workqueue writeback: flags=0x4a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2 in-flight: 5459:wb_workfn for 56s workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=41 MAYDAY in-flight: 2854(RESCUER):batadv_tt_purge for 2s pending: mayday_cursor_func inactive: batadv_tt_purge, 3*batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_purge_orig, 9*batadv_iv_send_outstanding_bat_ogm_packet, batadv_dat_purge, batadv_mcast_mla_update, batadv_bla_periodic_work, batadv_dat_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_tt_purge, batadv_mcast_mla_update, batadv_bla_periodic_work, batadv_dat_purge, 3*batadv_mcast_mla_update, 2*batadv_tt_purge, batadv_bla_periodic_work workqueue wg-crypt-wg0: 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-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-crypt-wg0: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3 pending: 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-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_encrypt_worker, wg_packet_tx_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_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=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=3 refcnt=4 pending: wg_packet_encrypt_worker, wg_packet_tx_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_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=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_encrypt_worker, wg_packet_tx_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-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_tx_worker, wg_packet_decrypt_worker, wg_packet_encrypt_worker pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=55s workers=10 idle: 868 4803 4821 4802 4795 4666 4901 10 4810 pool 8: cpus=0-1 flags=0x6 nice=0 hung=2s workers=12 manager: 5903 Showing backtraces of busy workers in stalled worker pools: pool 2: task:kworker/0:0 state:R running task stack:0 pid:9 tgid:9 ppid:2 task_flags:0x4288060 flags:0x00000010 Workqueue: events request_firmware_work_func Call trace: __switch_to+0x2b4/0x6e4 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] __alloc_skb+0x1c8/0x610 net/core/skbuff.c:699 alloc_skb include/linux/skbuff.h:1384 [inline] alloc_uevent_skb+0x78/0x1ec lib/kobject_uevent.c:289 uevent_net_broadcast_untagged lib/kobject_uevent.c:326 [inline] kobject_uevent_net_broadcast+0x2d4/0x53c lib/kobject_uevent.c:410 kobject_uevent_env+0x518/0x944 lib/kobject_uevent.c:611 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:659 device_del+0x5f8/0x71c drivers/base/core.c:3979 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:124 [inline] fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:162 [inline] firmware_fallback_sysfs+0x324/0x918 drivers/base/firmware_loader/fallback.c:238 _request_firmware+0xb34/0xf5c drivers/base/firmware_loader/main.c:898 request_firmware_work_func+0xa4/0x24c drivers/base/firmware_loader/main.c:1162 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:838