BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 33s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=9 refcnt=10
    in-flight: 7018:nsim_fib_event_work
    pending: 2*nsim_dev_hwstats_traffic_work, psi_avgs_work, vmstat_shepherd, 3*nsim_dev_hwstats_traffic_work, delayed_vfree_work
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=5 refcnt=6
    pending: 5*nsim_dev_hwstats_traffic_work
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=10 refcnt=11
    in-flight: 2420:nsim_dev_trap_report_work ,9087:nsim_dev_trap_report_work ,8447:nsim_dev_trap_report_work ,7534:linkwatch_event ,10453:nsim_dev_trap_report_work ,9062:nsim_dev_trap_report_work
    pending: nsim_dev_trap_report_work, flush_memcg_stats_dwork, 2*nsim_dev_trap_report_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    in-flight: 6197:nsim_dev_trap_report_work ,8536:nsim_dev_trap_report_work
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5
    pending: neigh_periodic_work, 2*neigh_managed_work, gc_worker
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=3 refcnt=4
    in-flight: 8578:wg_ratelimiter_gc_entries
    pending: neigh_periodic_work, check_lifetime
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=0 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=3 MAYDAY
    pending: wb_workfn
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=8
    in-flight: 2073(RESCUER):addrconf_verify_work
    inactive: 3*addrconf_verify_work
workqueue wg-kex-wg0: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 9144:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 9382:wg_packet_handshake_receive_worker wg_packet_handshake_receive_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: 9525:wg_packet_handshake_receive_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 12: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-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_decrypt_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
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 11087: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=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg0: flags=0x24
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 9532:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 6195:wg_packet_handshake_receive_worker wg_packet_handshake_receive_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=2 refcnt=3
    in-flight: 8809:wg_packet_handshake_receive_worker wg_packet_handshake_receive_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    in-flight: 10316:wg_packet_handshake_send_worker
    pending: wg_packet_handshake_send_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
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    in-flight: 7594: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=2 refcnt=3
    in-flight: 1012:wg_packet_handshake_send_worker wg_packet_handshake_send_worker
pool 2: cpus=0 node=0 flags=0x0 nice=0 hung=33s workers=8 idle: 6531 9 10077 8677 8807
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=11 idle: 11151 9123 3465 10336 9086
pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=13 manager: 11152
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:7     state:R  running task     stack:0     pid:9144  tgid:9144  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
Call trace:
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C)
 sched_show_task kernel/sched/core.c:7933 [inline]
 sched_show_task+0x3c4/0x604 kernel/sched/core.c:7908
 show_cpu_pool_hog kernel/workqueue.c:7491 [inline]
 show_cpu_pools_hogs kernel/workqueue.c:7511 [inline]
 wq_watchdog_timer_fn+0x5f8/0x870 kernel/workqueue.c:7598
 call_timer_fn+0x1b0/0x7a8 kernel/time/timer.c:1747
 expire_timers kernel/time/timer.c:1798 [inline]
 __run_timers+0x778/0x9a8 kernel/time/timer.c:2372
 __run_timer_base kernel/time/timer.c:2384 [inline]
 __run_timer_base kernel/time/timer.c:2376 [inline]
 run_timer_base+0x110/0x180 kernel/time/timer.c:2393
 run_timer_softirq+0x24/0x44 kernel/time/timer.c:2404
 handle_softirqs+0x2d8/0xdb4 kernel/softirq.c:579
 __do_softirq+0x14/0x20 kernel/softirq.c:613
 ____do_softirq+0x10/0x1c arch/arm64/kernel/irq.c:68
 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
 do_softirq_own_stack+0x1c/0x2c arch/arm64/kernel/irq.c:73
 do_softirq kernel/softirq.c:480 [inline]
 do_softirq+0x12c/0x150 kernel/softirq.c:467
 __local_bh_enable_ip+0x414/0x4a4 kernel/softirq.c:407
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline]
 wg_pubkey_hashtable_lookup+0x138/0x290 drivers/net/wireguard/peerlookup.c:69
 wg_noise_handshake_consume_initiation+0x30c/0x634 drivers/net/wireguard/noise.c:617
 wg_receive_handshake_packet+0x19c/0x810 drivers/net/wireguard/receive.c:144
 wg_packet_handshake_receive_worker+0xd8/0x31c drivers/net/wireguard/receive.c:213
 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x734/0xb84 kernel/workqueue.c:3400
 kthread+0x348/0x5fc kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
pool 2:
task:kworker/0:3     state:R  running task     stack:0     pid:7018  tgid:7018  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_work
Call trace:
 __switch_to+0x208/0x4ec arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0xd58/0x3180 kernel/sched/core.c:6961
 preempt_schedule_common kernel/sched/core.c:7145 [inline]
 preempt_schedule+0xf4/0x254 kernel/sched/core.c:7169
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x94/0xac kernel/locking/spinlock.c:194
 __debug_check_no_obj_freed lib/debugobjects.c:1108 [inline]
 debug_check_no_obj_freed+0x278/0x500 lib/debugobjects.c:1129
 free_pages_prepare mm/page_alloc.c:1402 [inline]
 __free_frozen_pages+0x370/0x1240 mm/page_alloc.c:2895
 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2933
 __free_slab+0xf8/0x1dc mm/slub.c:2729
 free_slab+0x30/0x104 mm/slub.c:2752
 discard_slab mm/slub.c:2758 [inline]
 __put_partials+0x224/0x24c mm/slub.c:3223
 put_cpu_partial+0x1c0/0x2a0 mm/slub.c:3298
 __slab_free+0x1f0/0x398 mm/slub.c:4565
 do_slab_free mm/slub.c:4647 [inline]
 ___cache_free+0xc4/0xd8 mm/slub.c:4753
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x78/0x130 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x19c mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x8c/0xbc mm/kasan/common.c:396
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x1b0/0x3cc mm/slub.c:4407
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 nsim_fib6_rt_nh_add+0x4c/0x220 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+0xaec/0x1c14 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x734/0xb84 kernel/workqueue.c:3400
 kthread+0x348/0x5fc kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
pool 2:
task:kworker/0:9     state:R  running task     stack:0     pid:9532  tgid:9532  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
Call trace:
 __switch_to+0x208/0x4ec arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0xd58/0x3180 kernel/sched/core.c:6961
 preempt_schedule_common kernel/sched/core.c:7145 [inline]
 preempt_schedule+0xf4/0x254 kernel/sched/core.c:7169
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x94/0xac kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __slab_free+0x224/0x398 mm/slub.c:4592
 do_slab_free mm/slub.c:4647 [inline]
 ___cache_free+0xc4/0xd8 mm/slub.c:4753
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x78/0x130 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x19c mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x60/0x90 mm/kasan/common.c:340
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4191 [inline]
 slab_alloc_node mm/slub.c:4240 [inline]
 __kmalloc_cache_noprof+0x150/0x3cc mm/slub.c:4402
 kmalloc_noprof include/linux/slab.h:905 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 keypair_create drivers/net/wireguard/noise.c:100 [inline]
 wg_noise_handshake_begin_session+0xe0/0xa64 drivers/net/wireguard/noise.c:827
 wg_packet_send_handshake_response+0x1a8/0x250 drivers/net/wireguard/send.c:96
 wg_receive_handshake_packet+0x1b8/0x810 drivers/net/wireguard/receive.c:154
 wg_packet_handshake_receive_worker+0xd8/0x31c drivers/net/wireguard/receive.c:213
 process_one_work+0x7cc/0x18d4 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x734/0xb84 kernel/workqueue.c:3400
 kthread+0x348/0x5fc kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860