BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 44s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=4 refcnt=5
    in-flight: 2322:nsim_fib_event_work nsim_fib_event_work
    pending: drm_fb_helper_damage_work, vmstat_shepherd
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6
    pending: nsim_dev_hwstats_traffic_work, psi_avgs_work, 3*ovs_dp_masks_rebalance
workqueue events_long: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=6 refcnt=7
    pending: 6*defense_work_handler
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6
    pending: 5*defense_work_handler
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=3 refcnt=4
    in-flight: 302:nsim_dev_trap_report_work ,6682:cfg80211_wiphy_work cfg80211_wiphy_work
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=2 refcnt=3
    in-flight: 42:cfg80211_wiphy_work cfg80211_wiphy_work
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=3 refcnt=4
    in-flight: 2194:gc_worker
    pending: do_cache_clean, fb_flashcursor
workqueue kvfree_rcu_reclaim: flags=0xa
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2
    pending: kfree_rcu_monitor
workqueue netns: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=4
    in-flight: 6641:cleanup_net
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2
    pending: vmstat_update
  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=0x4 nice=0 active=1 refcnt=3
    in-flight: 34(RESCUER):wb_workfn
workqueue mld: flags=0x40008
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=37
    in-flight: 6683:mld_dad_work
    inactive: 35*mld_dad_work
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=23
    in-flight: 6602:mld_dad_work
    inactive: mld_dad_work, 2*mld_ifc_work, 4*mld_dad_work, 4*mld_ifc_work, 2*mld_dad_work, 2*mld_ifc_work, 6*mld_dad_work
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=54
    in-flight: 4277(RESCUER):batadv_tt_purge
    inactive: batadv_nc_worker, 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, 5*batadv_nc_worker, 6*batadv_mcast_mla_update, 2*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 7*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_tt_purge
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-crypt-wg1: flags=0x28
  pwq 6: cpus=1 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 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x24
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_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-crypt-wg1: flags=0x28
  pwq 6: cpus=1 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=0x24
  pwq 2: cpus=0 node=0 flags=0x2 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
    pending: wg_packet_handshake_receive_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
pool 2: cpus=0 node=0 flags=0x2 nice=0 hung=1s workers=5 manager: 6753 idle: 6613 10
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=44s workers=5 idle: 6636 1821 6635 24
pool 8: cpus=0-1 flags=0x4 nice=0 hung=0s workers=8 idle: 12 6754 6647
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 6:
task:kworker/1:1     state:R  running task     stack:0     pid:6602  tgid:6602  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:5357 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6961
 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145
 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169
 __local_bh_enable_ip+0x20c/0x35c kernel/softirq.c:414
 __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]
 rt6_uncached_list_add net/ipv6/route.c:146 [inline]
 icmp6_dst_alloc+0x304/0x3a4 net/ipv6/route.c:3342
 mld_sendpack+0x640/0xf50 net/ipv6/mcast.c:1849
 mld_send_initial_cr+0x34c/0x534 net/ipv6/mcast.c:2276
 mld_dad_work+0x40/0x418 net/ipv6/mcast.c:2299
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844