BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 34s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=10 refcnt=11
    in-flight: 6683:reg_todo
    pending: 2*nsim_dev_hwstats_traffic_work, vmstat_shepherd, 3*ovs_dp_masks_rebalance, 2*psi_avgs_work, free_obj_work
workqueue events_long: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=4 refcnt=5
    pending: 4*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=8 refcnt=9
    in-flight: 506:cfg80211_wiphy_work cfg80211_wiphy_work ,580:cfg80211_wiphy_work cfg80211_wiphy_work ,14:cfg80211_wiphy_work
    pending: nsim_dev_trap_report_work, cfg80211_wiphy_work, toggle_allocation_gate
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=25 refcnt=26
    in-flight: 42:cfg80211_wiphy_work ,60:cfg80211_wiphy_work ,666:cfg80211_wiphy_work ,224:cfg80211_wiphy_work ,6994:nsim_dev_trap_report_work ,41:cfg80211_wiphy_work cfg80211_wiphy_work
    pending: 3*cfg80211_wiphy_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work, nsim_dev_trap_report_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work, nsim_dev_trap_report_work, flush_memcg_stats_dwork, macvlan_process_broadcast, crng_reseed, nsim_dev_trap_report_work
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: wg_ratelimiter_gc_entries
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8
    in-flight: 12:neigh_periodic_work
    pending: fb_flashcursor, gc_worker, neigh_managed_work, do_cache_clean, neigh_periodic_work, reg_check_chans_work
workqueue kvfree_rcu_reclaim: flags=0xa
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 MAYDAY
    pending: 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=2
    pending: wb_workfn
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 MAYDAY
    pending: wb_update_bandwidth_workfn
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=49
    in-flight: 4251(RESCUER):batadv_tt_purge
    inactive: batadv_tt_purge, 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, 2*batadv_tt_purge, 4*batadv_nc_worker, batadv_mcast_mla_update, 6*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_mcast_mla_update, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet, batadv_nc_worker, batadv_tt_purge
workqueue ext4-rsv-conversion: flags=0xa
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=3 MAYDAY
    pending: ext4_end_io_rsv_work
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=0x28
  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-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=0x28
  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-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=0x28
  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 wg-crypt-wg1: flags=0x28
  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=0x28
  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=0x28
  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=0x28
  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=0x28
  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=0x28
  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-wg0: flags=0x28
  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=0x28
  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=0x28
  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-wg0: flags=0x28
  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=0x28
  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=0x28
  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=34s workers=14 idle: 9 6614 6623 2290 6652 11 6596 6648 6654 6658 6530 6699 6611
pool 8: cpus=0-1 flags=0x6 nice=0 hung=1s workers=11 manager: 6996
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:12    state:R  running task     stack:0     pid:6683  tgid:6683  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events reg_todo
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5401 [inline]
 __schedule+0x1414/0x2a28 kernel/sched/core.c:6790
 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7113
 arm64_preempt_schedule_irq+0x44/0x58 arch/arm64/kernel/entry-common.c:305
 __el1_irq arch/arm64/kernel/entry-common.c:656 [inline]
 el1_interrupt+0x3c/0x54 arch/arm64/kernel/entry-common.c:668
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:673
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
 __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline] (P)
 arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline] (P)
 put_cpu_partial+0x154/0x1c0 mm/slub.c:3258 (P)
 __slab_free+0x1b0/0x280 mm/slub.c:4513
 do_slab_free mm/slub.c:4595 [inline]
 ___cache_free+0x150/0x170 mm/slub.c:4701
 qlink_free+0x48/0x94 mm/kasan/quarantine.c:163
 qlist_free_all+0x44/0xb8 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x2c/0x88 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4148 [inline]
 slab_alloc_node mm/slub.c:4197 [inline]
 kmem_cache_alloc_noprof+0x238/0x3e8 mm/slub.c:4204
 skb_clone+0x1b4/0x328 net/core/skbuff.c:2050
 do_one_broadcast net/netlink/af_netlink.c:1444 [inline]
 netlink_broadcast_filtered+0x5dc/0x10c4 net/netlink/af_netlink.c:1522
 netlink_broadcast+0x50/0x68 net/netlink/af_netlink.c:1546
 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline]
 kobject_uevent_net_broadcast+0x33c/0x548 lib/kobject_uevent.c:410
 kobject_uevent_env+0x528/0x884 lib/kobject_uevent.c:608
 call_crda net/wireless/reg.c:586 [inline]
 reg_query_database+0x278/0x470 net/wireless/reg.c:1129
 reg_process_hint_core net/wireless/reg.c:2695 [inline]
 reg_process_hint+0x154/0xd30 net/wireless/reg.c:3041
 reg_process_pending_hints net/wireless/reg.c:3129 [inline]
 reg_todo+0x310/0x968 net/wireless/reg.c:3220
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3402
 kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843