BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 40s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=-20 stuck for 30s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: nsim_dev_hwstats_traffic_work
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=14 refcnt=15
    pending: 4*nsim_dev_hwstats_traffic_work, 2*psi_avgs_work, 4*ovs_dp_masks_rebalance, free_obj_work, key_garbage_collector, 2*psi_avgs_work
workqueue events_highpri: flags=0x10
  pwq 7: cpus=1 node=0 flags=0x0 nice=-20 active=1 refcnt=2
    pending: fill_page_cache_func
workqueue events_long: flags=0x0
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: 2*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=14 refcnt=15
    in-flight: 74:cfg80211_wiphy_work cfg80211_wiphy_work ,8171:cfg80211_wiphy_work
    pending: toggle_allocation_gate, 2*nsim_dev_trap_report_work, macvlan_process_broadcast, flush_memcg_stats_dwork, nsim_dev_trap_report_work, 2*macvlan_process_broadcast, cfg80211_wiphy_work, nsim_dev_trap_report_work, macvlan_process_broadcast
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=17 refcnt=18
    in-flight: 6828:call_usermodehelper_exec_work ,41:cfg80211_wiphy_work ,385:cfg80211_wiphy_work ,42:cfg80211_wiphy_work ,180:cfg80211_wiphy_work ,13:cfg80211_wiphy_work cfg80211_wiphy_work
    pending: 2*macvlan_process_broadcast, 2*cfg80211_wiphy_work, linkwatch_event, nsim_dev_trap_report_work, 3*cfg80211_wiphy_work, crng_reseed
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=6 refcnt=7
    in-flight: 6861:crda_timeout_work
    pending: do_cache_clean, gc_worker, reg_check_chans_work, 2*check_lifetime
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=8 refcnt=9
    in-flight: 6860:neigh_periodic_work
    pending: wg_ratelimiter_gc_entries, neigh_periodic_work, 2*neigh_managed_work, 3*check_lifetime
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 netns: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4
    in-flight: 12:cleanup_net
workqueue mm_percpu_wq: flags=0x8
  pwq 6: cpus=1 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: 586:wb_workfn
workqueue kblockd: flags=0x18
  pwq 7: cpus=1 node=0 flags=0x0 nice=-20 active=2 refcnt=3
    in-flight: 82:blk_mq_timeout_work
    pending: blk_mq_run_work_fn
workqueue gid-cache-wq: flags=0x20002
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4
    pending: update_gid_event_work_handler
workqueue mld: flags=0x40008
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    in-flight: 6682:mld_ifc_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=9
    in-flight: 4163(RESCUER):addrconf_verify_work
    inactive: 4*addrconf_verify_work
workqueue krxrpcd: flags=0x2001a
  pwq 9: cpus=0-1 node=0 flags=0x4 nice=-20 active=1 refcnt=5
    pending: rxrpc_peer_keepalive_worker
    inactive: rxrpc_peer_keepalive_worker
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=47
    in-flight: 4244(RESCUER):batadv_dat_purge
    inactive: 5*batadv_tt_purge, 4*batadv_nc_worker, 5*batadv_iv_send_outstanding_bat_ogm_packet, 5*batadv_purge_orig, 4*batadv_iv_send_outstanding_bat_ogm_packet, batadv_nc_worker, 5*batadv_mcast_mla_update, 6*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_bla_periodic_work, 2*batadv_dat_purge, batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_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 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x24
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_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 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg2: flags=0x24
  pwq 6: cpus=1 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 6: cpus=1 node=0 flags=0x0 nice=0 active=3 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_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
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_send_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 6: cpus=1 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-wg1: 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-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 6: cpus=1 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-wg2: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_send_worker
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_send_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 6: cpus=1 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-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 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_send_worker
workqueue loop1: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: loop_rootcg_workfn
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=40s workers=8 idle: 24 6684 6683 26 6576 1820 6597
pool 7: cpus=1 node=0 flags=0x0 nice=-20 hung=30s workers=3 idle: 7881 25
pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=13 manager: 8172
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 6:
task:kworker/1:5     state:R  running task     stack:0     pid:6682  tgid:6682  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: mld mld_ifc_work
Call trace:
 __switch_to+0x414/0x834 arch/arm64/kernel/process.c:737 (T)
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x1414/0x2a28 kernel/sched/core.c:6785
 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:6965
 preempt_schedule+0x60/0x80 kernel/sched/core.c:6989
 __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_cr net/ipv6/mcast.c:2124 [inline]
 mld_ifc_work+0x27c/0xce8 net/ipv6/mcast.c:2702
 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:847