BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 35s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=10 refcnt=11
    pending: nsim_dev_hwstats_traffic_work, psi_avgs_work, vmstat_shepherd, free_obj_work, 6*ovs_dp_masks_rebalance
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=9 refcnt=10
    pending: 4*ovs_dp_masks_rebalance, 4*nsim_dev_hwstats_traffic_work, drm_fb_helper_damage_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
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=6 refcnt=7
    pending: 6*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5
    in-flight: 768:cfg80211_wiphy_work cfg80211_wiphy_work ,6760:cfg80211_wiphy_work cfg80211_wiphy_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=11 refcnt=12
    in-flight: 6690:nsim_dev_trap_report_work ,6811:nsim_dev_trap_report_work ,41:linkwatch_event ,736:cfg80211_wiphy_work cfg80211_wiphy_work ,6808:cfg80211_wiphy_work cfg80211_wiphy_work
    pending: nsim_dev_trap_report_work, toggle_allocation_gate, 2*nsim_dev_trap_report_work
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 6797:reg_check_chans_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=5 refcnt=6
    in-flight: 6809:gc_worker
    pending: do_cache_clean, neigh_periodic_work, fb_flashcursor, wg_ratelimiter_gc_entries
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 netns: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4
    in-flight: 15:cleanup_net
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: vmstat_update
workqueue mld: flags=0x40008
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=35
    in-flight: 6751:mld_dad_work
    inactive: 4*mld_ifc_work, 2*mld_dad_work, mld_ifc_work, 2*mld_dad_work, mld_ifc_work, mld_dad_work, 6*mld_ifc_work, mld_dad_work, 15*mld_ifc_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=336
    in-flight: 6660:addrconf_dad_work
    inactive: 331*addrconf_dad_work, addrconf_verify_work
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=56
    in-flight: 4254(RESCUER):batadv_tt_purge
    inactive: 4*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, batadv_dat_purge, batadv_bla_periodic_work, 6*batadv_nc_worker, 6*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_purge_orig, 6*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 9*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge
workqueue wg-crypt-wg0: flags=0x28
  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=0x28
  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=0x28
  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-wg0: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    in-flight: 6622:wg_packet_handshake_receive_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 6810: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_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    in-flight: 1818:wg_packet_handshake_receive_worker
workqueue wg-crypt-wg1: flags=0x28
  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=0x24
  pwq 2: cpus=0 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=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-kex-wg0: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    pending: 2*wg_packet_handshake_send_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 6812:wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  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=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker
pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=35s workers=5 idle: 6807 9 2314
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=8 idle: 6707 6701 26 6771 24 6786 6806
pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=14 manager: 6813
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:3     state:R  running task     stack:0     pid:6751  tgid:6751  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: mld mld_dad_work
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x141c/0x2a14 kernel/sched/core.c:6786
 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:6966
 preempt_schedule+0x60/0x80 kernel/sched/core.c:6990
 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414
 __raw_read_unlock_bh include/linux/rwlock_api_smp.h:257 [inline]
 _raw_read_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:284
 ipv6_get_lladdr+0x26c/0x3a4 net/ipv6/addrconf.c:1937
 mld_newpack+0x340/0xa28 net/ipv6/mcast.c:1802
 add_grhead+0x6c/0x25c net/ipv6/mcast.c:1899
 add_grec+0x1144/0x1324 net/ipv6/mcast.c:2037
 mld_send_initial_cr+0x234/0x4a8 net/ipv6/mcast.c:2282
 mld_dad_work+0x40/0x4c8 net/ipv6/mcast.c:2308
 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:844
pool 2:
task:kworker/0:1     state:R  running task     stack:0     pid:6622  tgid:6622  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x141c/0x2a14 kernel/sched/core.c:6786
 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:6966
 preempt_schedule+0x60/0x80 kernel/sched/core.c:6990
 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414
 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
 rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
 wg_noise_handshake_begin_session+0x6cc/0x9c0 drivers/net/wireguard/noise.c:856
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:176 [inline]
 wg_packet_handshake_receive_worker+0x530/0xc20 drivers/net/wireguard/receive.c:213
 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:844