BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 30s!
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 30s!
BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 30s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=4 refcnt=5
    pending: nsim_dev_hwstats_traffic_work, nsim_dev_trap_report_work, vmstat_shepherd, kfree_rcu_monitor
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=6 refcnt=7
    in-flight: 12296:nsim_dev_trap_report_work
    pending: nsim_dev_hwstats_traffic_work, 3*psi_avgs_work, kfree_rcu_monitor
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2
    pending: flush_memcg_stats_dwork
workqueue events_power_efficient: flags=0x82
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=5 refcnt=6
    pending: fb_flashcursor, wg_ratelimiter_gc_entries, 2*neigh_managed_work, neigh_periodic_work
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=2
    pending: neigh_periodic_work
workqueue mm_percpu_wq: flags=0x8
  pwq 2: cpus=0 node=0 flags=0x0 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=2
    pending: wb_workfn
workqueue kblockd: flags=0x18
  pwq 3: cpus=0 node=0 flags=0x0 nice=-20 active=1 refcnt=2
    pending: blk_mq_timeout_work
workqueue dm_bufio_cache: flags=0x8
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: work_fn
workqueue mld: flags=0x40008
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: mld_ifc_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x4 nice=0 active=1 refcnt=4
    pending: addrconf_verify_work
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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-crypt-wg2: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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-crypt-wg0: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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-crypt-wg1: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: 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-crypt-wg2: flags=0x28
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_encrypt_worker
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=30s workers=4 idle: 10072 12124 27
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 6:
task:kworker/1:2     state:R  running task     stack:0     pid:12296 tgid:12296 ppid:2      flags:0x00000008
Workqueue: events nsim_dev_trap_report_work
Call trace:
 __switch_to+0x1c8/0x2a0 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xad8/0x2b30 kernel/sched/core.c:6746
 preempt_schedule_common kernel/sched/core.c:6925 [inline]
 preempt_schedule+0xf4/0x254 kernel/sched/core.c:6949
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x6c/0x84 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
 nsim_dev_trap_report_work+0x6c4/0xa40 drivers/net/netdevsim/dev.c:850
 process_one_work+0x78c/0x1898 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x764/0xc24 kernel/workqueue.c:3416
 kthread+0x27c/0x300 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
TCP: request_sock_TCP: Possible SYN flooding on port [::]:2. Sending cookies.
TCP: request_sock_TCP: Possible SYN flooding on port [::]:2. Sending cookies.
TCP: request_sock_TCP: Possible SYN flooding on port [::]:2. Sending cookies.
TCP: request_sock_TCP: Possible SYN flooding on port [::]:2. Sending cookies.
TCP: request_sock_TCP: Possible SYN flooding on port [::]:2. Sending cookies.