BUG: workqueue lockup - pool cpus=0 node=0 flags=0x2 nice=0 stuck for 45s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=11 refcnt=12
    in-flight: 6957:nsim_fib_event_work
    pending: 3*nsim_dev_hwstats_traffic_work, free_obj_work, psi_avgs_work, vmstat_shepherd, drm_fb_helper_damage_work, 2*ovs_dp_masks_rebalance, psi_avgs_work
workqueue events_long: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x2 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=10 refcnt=11
    in-flight: 14:cfg80211_wiphy_work cfg80211_wiphy_work ,6770:cfg80211_wiphy_work cfg80211_wiphy_work ,576:cfg80211_wiphy_work cfg80211_wiphy_work
    pending: macvlan_process_broadcast, nsim_dev_trap_report_work, toggle_allocation_gate, nsim_dev_trap_report_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=9 refcnt=10
    in-flight: 42:cfg80211_wiphy_work cfg80211_wiphy_work ,555:nsim_dev_trap_report_work ,6771:call_usermodehelper_exec_work ,12:linkwatch_event ,6772:nsim_dev_trap_report_work
    pending: 2*nsim_dev_trap_report_work, flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    pending: fb_flashcursor
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=5 refcnt=6
    in-flight: 6767:neigh_periodic_work ,41:gc_worker
    pending: do_cache_clean, wg_ratelimiter_gc_entries, neigh_managed_work
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: 739: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
workqueue gid-cache-wq: flags=0x20002
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=83
    pending: netdevice_event_work_handler
    inactive: 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 6*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 2*update_gid_event_work_handler, 2*netdevice_event_work_handler, 3*update_gid_event_work_handler, 2*netdevice_event_work_handler, 13*update_gid_event_work_handler
, netdevice_event_work_handler
workqueue mld: flags=0x40008
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=1 refcnt=16
    pending: mld_dad_work
    inactive: mld_dad_work, 2*mld_ifc_work, 11*mld_dad_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=287
    in-flight: 231:addrconf_dad_work
    inactive: 278*addrconf_dad_work, 4*addrconf_verify_work, addrconf_dad_work
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=71
    in-flight: 4274(RESCUER):batadv_tt_purge
    inactive: batadv_tt_purge, batadv_purge_orig, 6*batadv_tt_purge, batadv_nc_worker, 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_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, 8*batadv_nc_worker, 9*batadv_mcast_mla_update, 4*batadv_purge_orig, 2*batadv_iv_send_outstanding_bat_ogm_packet, batadv_purge_orig, 5*batadv_iv_send_outstanding_bat_ogm_packet, 4*batadv_purge_orig, 6*batadv_iv_send_outstanding_bat_ogm_packet
workqueue udp_tunnel_nic: flags=0x20002
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=7
    in-flight: 510:udp_tunnel_nic_device_sync_work
    inactive: 3*udp_tunnel_nic_device_sync_work
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
    in-flight: 26: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
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-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=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
    in-flight: 6694:wg_packet_decrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x2 nice=0 active=3 refcnt=4
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_decrypt_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
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    in-flight: 24: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_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=2 refcnt=3
    in-flight: 2322:wg_packet_handshake_receive_worker 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=0x2 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, 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=1 refcnt=2
    in-flight: 6768:wg_packet_handshake_receive_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_encrypt_worker, wg_packet_tx_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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
pool 2: cpus=0 node=0 flags=0x2 nice=0 hung=45s workers=8 manager: 10 idle: 7022 6643 6777 6625 9 6990
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=6 idle: 6763
pool 8: cpus=0-1 flags=0x6 nice=0 hung=2s workers=14 manager: 7023
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:5     state:R  running task     stack:0     pid:6957  tgid:6957  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
 preempt_schedule_common+0xe0/0x194 kernel/sched/core.c:7145
 preempt_schedule+0x60/0x80 kernel/sched/core.c:7169
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x94/0x98 kernel/locking/spinlock.c:194
 __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline]
 debug_check_no_obj_freed+0x454/0x470 lib/debugobjects.c:1129
 free_pages_prepare mm/page_alloc.c:1402 [inline]
 __free_frozen_pages+0x4b8/0xcac mm/page_alloc.c:2895
 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2933
 __free_slab+0x104/0x1c8 mm/slub.c:2724
 free_slab+0x24/0x120 mm/slub.c:2747
 discard_slab mm/slub.c:2753 [inline]
 __put_partials+0x194/0x228 mm/slub.c:3218
 put_cpu_partial+0x164/0x1c0 mm/slub.c:3293
 __slab_free+0x1a0/0x25c mm/slub.c:4550
 do_slab_free mm/slub.c:4632 [inline]
 ___cache_free+0x150/0x170 mm/slub.c:4738
 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_kmalloc+0x2c/0xb4 mm/kasan/common.c:396
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x2a4/0x3fc mm/slub.c:4396
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 nsim_fib6_rt_nh_add+0x64/0x218 drivers/net/netdevsim/fib.c:500
 nsim_fib6_rt_create drivers/net/netdevsim/fib.c:562 [inline]
 nsim_fib6_rt_insert drivers/net/netdevsim/fib.c:752 [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+0x14e8/0x25b8 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