BUG: workqueue lockup - pool cpus=0 node=0 flags=0x2 nice=0 stuck for 36s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=13 refcnt=14
    in-flight: 6552:nsim_fib_event_work ,1819:nsim_fib_event_work
    pending: 2*nsim_dev_hwstats_traffic_work, free_obj_work, vmstat_shepherd, 6*ovs_dp_masks_rebalance, psi_avgs_work
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=8 refcnt=9
    in-flight: 6637:nsim_fib_event_work ,6578:nsim_fib_event_work ,26:nsim_fib_event_work
    pending: 3*nsim_dev_hwstats_traffic_work, psi_avgs_work, drm_fb_helper_damage_work
workqueue events_long: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 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=9 refcnt=10
    in-flight: 42:cfg80211_wiphy_work cfg80211_wiphy_work ,5333:cfg80211_wiphy_work cfg80211_wiphy_work ,2157:cfg80211_wiphy_work cfg80211_wiphy_work ,282:cfg80211_wiphy_work cfg80211_wiphy_work ,12:linkwatch_event
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=7 refcnt=8
    in-flight: 580:nsim_dev_trap_report_work ,7548:nsim_dev_trap_report_work ,41:nsim_dev_trap_report_work
    pending: flush_memcg_stats_dwork, nsim_dev_trap_report_work, toggle_allocation_gate, 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: 7547:crda_timeout_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    pending: wg_ratelimiter_gc_entries, do_cache_clean
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=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=0x6 nice=0 active=1 refcnt=2
    in-flight: 15:wb_workfn
workqueue mld: flags=0x40008
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=118
    in-flight: 11:mld_ifc_work
    inactive: 2*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 8*mld_ifc_work, mld_dad_work, 7*mld_ifc_work, 2*mld_dad_work, 3*mld_ifc_work, 2*mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, 4*mld_dad_work, 10*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, 2*mld_dad_work, 11*mld_ifc_work, mld_dad_work, 2*mld_ifc_work, 2*mld_dad_work, 11*mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 3*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 3*mld_ifc_work, 3*mld_dad_work, mld_ifc_work, mld_dad_work, 3*mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 5*mld_ifc_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=399
    in-flight: 2006:addrconf_dad_work
    inactive: 395*addrconf_dad_work
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=47
    in-flight: 4276(RESCUER):batadv_tt_purge
    inactive: 3*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, 5*batadv_nc_worker, 5*batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 13*batadv_iv_send_outstanding_bat_ogm_packet, 3*batadv_purge_orig
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_worker
workqueue wg-kex-wg0: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_tx_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-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker
workqueue wg-kex-wg1: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4
    pending: wg_packet_tx_worker, wg_packet_decrypt_worker, wg_packet_encrypt_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_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=2 refcnt=3
    in-flight: 7542:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: 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-wg0: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_tx_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=0x2 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 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-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=2 refcnt=3
    in-flight: 7546:wg_packet_handshake_receive_worker
    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
    in-flight: 1567:wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4
    pending: wg_packet_decrypt_worker, wg_packet_tx_worker, wg_packet_encrypt_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_worker
pool 2: cpus=0 node=0 flags=0x2 nice=0 hung=36s workers=6 manager: 9 idle: 6570 7544
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=13s workers=8 idle: 24 6646 6668
pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=13 manager: 7550
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:1     state:R  running task     stack:0     pid:11    tgid:11    ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: mld mld_ifc_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
 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
 rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
 __dev_queue_xmit+0x17ac/0x32a8 net/core/dev.c:4752
 dev_queue_xmit include/linux/netdevice.h:3361 [inline]
 neigh_hh_output include/net/neighbour.h:531 [inline]
 neigh_output include/net/neighbour.h:545 [inline]
 ip6_finish_output2+0x1510/0x1c7c net/ipv6/ip6_output.c:141
 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
 ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:226
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x1e0/0x464 net/ipv6/ip6_output.c:248
 dst_output include/net/dst.h:461 [inline]
 NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318
 mld_sendpack+0x764/0xf50 net/ipv6/mcast.c:1860
 mld_send_cr net/ipv6/mcast.c:2159 [inline]
 mld_ifc_work+0x770/0xc38 net/ipv6/mcast.c:2698
 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
pool 2:
task:kworker/0:3     state:R  running task     stack:0     pid:6552  tgid:6552  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_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
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7058
 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99
 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158
 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318
 nsim_fib6_rt_add drivers/net/netdevsim/fib.c:693 [inline]
 nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:759 [inline]
 nsim_fib6_event drivers/net/netdevsim/fib.c:856 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:889 [inline]
 nsim_fib_event_work+0x1bc4/0x25b8 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x990/0xed8 kernel/workqueue.c:3400
 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:1819  tgid:1819  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_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
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7058
 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99
 schedule_timeout_uninterruptible+0x7c/0xc0 kernel/time/sleep_timeout.c:158
 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318
 nsim_fib4_rt_add drivers/net/netdevsim/fib.c:369 [inline]
 nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:432 [inline]
 nsim_fib4_event drivers/net/netdevsim/fib.c:464 [inline]
 nsim_fib_event drivers/net/netdevsim/fib.c:884 [inline]
 nsim_fib_event_work+0x13a4/0x25b8 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x990/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844