sched: DL replenish lagged too much BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 49s! 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: 6569:reg_todo pending: 5*nsim_dev_hwstats_traffic_work, psi_avgs_work, vmstat_shepherd, 4*psi_avgs_work, 3*ovs_dp_masks_rebalance, rht_deferred_worker pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: 2*nsim_dev_hwstats_traffic_work, psi_avgs_work workqueue events_long: flags=0x100 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=5 refcnt=6 pending: 5*defense_work_handler pwq 6: cpus=1 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=13 refcnt=14 in-flight: 5238:cfg80211_wiphy_work cfg80211_wiphy_work ,42:cfg80211_wiphy_work cfg80211_wiphy_work ,682:cfg80211_wiphy_work cfg80211_wiphy_work ,2188:cfg80211_wiphy_work ,5152:cfg80211_wiphy_work cfg80211_wiphy_work ,2093:cfg80211_wiphy_work cfg80211_wiphy_work pending: crng_reseed, cfg80211_wiphy_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11 in-flight: 509:cfg80211_wiphy_work cfg80211_wiphy_work ,15:cfg80211_wiphy_work cfg80211_wiphy_work ,12:cfg80211_wiphy_work cfg80211_wiphy_work ,2249:cfg80211_wiphy_work cfg80211_wiphy_work pending: toggle_allocation_gate, flush_memcg_stats_dwork workqueue events_unbound: flags=0x2 pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7 pending: macvlan_process_broadcast, 3*nsim_dev_trap_report_work, 2*macvlan_process_broadcast pwq 8: cpus=0-1 flags=0x6 nice=0 active=8 refcnt=9 pending: 3*macvlan_process_broadcast, nsim_dev_trap_report_work, macvlan_process_broadcast, 3*nsim_dev_trap_report_work workqueue events_power_efficient: flags=0x182 pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8 in-flight: 8809:crda_timeout_work ,41:neigh_periodic_work pending: neigh_periodic_work, 2*neigh_managed_work, gc_worker, reg_check_chans_work pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4 pending: do_cache_clean, fb_flashcursor, wg_ratelimiter_gc_entries workqueue kvfree_rcu_reclaim: flags=0xa pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=4 MAYDAY pending: 2*kfree_rcu_monitor workqueue mm_percpu_wq: flags=0x8 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=3 MAYDAY pending: wb_update_bandwidth_workfn pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 in-flight: 34(RESCUER):wb_workfn workqueue bat_events: flags=0x6000a pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=44 in-flight: 4312(RESCUER):batadv_tt_purge inactive: 2*batadv_dat_purge, 2*batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, batadv_mcast_mla_update, 2*batadv_tt_purge, batadv_dat_purge, batadv_bla_periodic_work, 4*batadv_mcast_mla_update, 7*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 4*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_purge_orig, 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_tt_purge workqueue hci3: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 6568:hci_cmd_sync_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-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-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-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 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=4 refcnt=5 in-flight: 11:wg_packet_tx_worker 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=3 refcnt=4 pending: wg_packet_decrypt_worker, 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=4 refcnt=5 in-flight: 6621:wg_packet_tx_worker 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=2 refcnt=3 pending: 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=4 refcnt=5 in-flight: 2364:wg_packet_encrypt_worker pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker workqueue hci1: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=4 in-flight: 6563:hci_cmd_sync_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-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_decrypt_worker, wg_packet_encrypt_worker workqueue wg-crypt-wg2: flags=0x128 pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=3 refcnt=4 pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker workqueue hci4: flags=0x20012 pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=5 in-flight: 6555:hci_rx_work inactive: hci_cmd_work 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_decrypt_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=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=49s workers=7 idle: 9 6567 6564 pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=13 manager: 8810 pool 9: cpus=0-1 node=0 flags=0x4 nice=-20 hung=0s workers=7 idle: 6156 53 6561 6570 Showing backtraces of running workers in stalled CPU-bound worker pools: pool 2: task:kworker/0:6 state:R running task stack:0 pid:6621 tgid:6621 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg0 wg_packet_tx_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 rcu_read_unlock_bh include/linux/rcupdate.h:936 [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+0x634/0x6c8 drivers/net/wireguard/send.c:276 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:2 state:R running task stack:0 pid:2364 tgid:2364 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg2 wg_packet_encrypt_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:377 [inline] wg_packet_encrypt_worker+0x1154/0x11e0 drivers/net/wireguard/send.c:293 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 pool 2: task:kworker/0:1 state:R running task stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208060 flags:0x00000010 Workqueue: wg-crypt-wg1 wg_packet_tx_worker Call trace: __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T) context_switch kernel/sched/core.c:5325 [inline] __schedule+0x13b0/0x2864 kernel/sched/core.c:6929 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7113 preempt_schedule+0x60/0x80 kernel/sched/core.c:7137 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:457 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33 rcu_read_unlock_bh include/linux/rcupdate.h:936 [inline] mod_peer_timer+0x1e0/0x220 drivers/net/wireguard/timers.c:38 wg_timers_data_sent+0xb0/0xc4 drivers/net/wireguard/timers.c:151 wg_packet_create_data_done drivers/net/wireguard/send.c:257 [inline] wg_packet_tx_worker+0x214/0x6c8 drivers/net/wireguard/send.c:276 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844