BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 51s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x100
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=14 refcnt=15
    in-flight: 2567:nsim_fib_event_work nsim_fib_event_work ,9:nsim_fib_event_work nsim_fib_event_work ,6212:nsim_fib_event_work
    pending: 3*nsim_dev_hwstats_traffic_work, 2*psi_avgs_work, vmstat_shepherd, 3*ovs_dp_masks_rebalance
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=12 refcnt=13
    in-flight: 26:request_firmware_work_func ,76:nsim_fib_event_work ,6613:nsim_fib_event_work
    pending: nsim_dev_hwstats_traffic_work, psi_avgs_work, drm_fb_helper_damage_work, 2*ovs_dp_masks_rebalance, nsim_dev_hwstats_traffic_work, free_obj_work, ovs_dp_masks_rebalance, delayed_vfree_work
workqueue events_long: flags=0x100
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: 2*defense_work_handler
  pwq 6: cpus=1 node=0 flags=0x0 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=1 refcnt=2
    pending: flush_memcg_stats_dwork
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 4113:toggle_allocation_gate
workqueue events_unbound: flags=0x2
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=14 refcnt=15
    in-flight: 345:cfg80211_wiphy_work cfg80211_wiphy_work ,12:cfg80211_wiphy_work cfg80211_wiphy_work ,3874:nsim_dev_trap_report_work ,3157:nsim_dev_trap_report_work ,656:cfg80211_wiphy_work cfg80211_wiphy_work ,2808:linkwatch_event linkwatch_event ,633:crng_reseed ,5267:cfg80211_wiphy_work cfg80211_wiphy_work
    pending: 2*nsim_dev_trap_report_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    pending: nsim_dev_trap_report_work
workqueue events_power_efficient: flags=0x182
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=4 refcnt=5
    in-flight: 42:wg_ratelimiter_gc_entries ,41:neigh_periodic_work
    pending: fb_flashcursor, do_cache_clean
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    in-flight: 5108:gc_worker
    pending: neigh_periodic_work
workqueue kvfree_rcu_reclaim: flags=0xa
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 540:kfree_rcu_work kfree_rcu_work
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=4 MAYDAY
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=0x6 nice=0 active=1 refcnt=4 MAYDAY
    in-flight: 34(RESCUER):wb_workfn
workqueue mld: flags=0x40108
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=91
    pending: mld_ifc_work
    inactive: 8*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 7*mld_ifc_work, mld_dad_work, 5*mld_ifc_work, mld_dad_work, 21*mld_ifc_work, 2*mld_dad_work, 2*mld_ifc_work, 2*mld_dad_work, mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 2*mld_ifc_work, mld_dad_work, 5*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 4*mld_ifc_work, mld_dad_work, 9*mld_ifc_work, mld_dad_work, mld_ifc_work, mld_dad_work, 5*mld_ifc_work
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=8
    pending: mld_ifc_work
    inactive: 6*mld_ifc_work
workqueue ipv6_addrconf: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=430
    in-flight: 488:addrconf_dad_work
    inactive: 426*addrconf_dad_work
workqueue bat_events: flags=0x6000a
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=40 MAYDAY
    in-flight: 3904(RESCUER):batadv_dat_purge
    inactive: batadv_bla_periodic_work, batadv_dat_purge, batadv_bla_periodic_work, 2*batadv_tt_purge, 2*batadv_mcast_mla_update, 3*batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_purge_orig, 11*batadv_iv_send_outstanding_bat_ogm_packet, batadv_mcast_mla_update, batadv_iv_send_outstanding_bat_ogm_packet, 2*batadv_mcast_mla_update, 3*batadv_purge_orig, 3*batadv_tt_purge, batadv_dat_purge
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=0x128
  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=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 1864:wg_packet_handshake_send_worker
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 13:wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: 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
workqueue wg-kex-wg2: flags=0x124
  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
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg2: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker
workqueue wg-crypt-wg0: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, wg_packet_encrypt_worker
  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=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 4639:wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x128
  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=0x128
  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-kex-wg0: flags=0x124
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg0: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, wg_packet_encrypt_worker
  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=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 120:wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: 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
workqueue wg-crypt-wg2: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: 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
workqueue wg-kex-wg0: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=1 refcnt=2
    in-flight: 3973:wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x128
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=2 refcnt=3
    pending: wg_packet_tx_worker, wg_packet_encrypt_worker
  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=0x124
  pwq 2: cpus=0 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg1: flags=0x128
  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=0x128
  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-kex-wg0: flags=0x124
  pwq 6: cpus=1 node=0 flags=0x0 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=0x128
  pwq 6: cpus=1 node=0 flags=0x0 nice=0 active=1 refcnt=2
    pending: wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 8: cpus=0-1 flags=0x6 nice=0 active=2 refcnt=3
    in-flight: 4224:wg_packet_handshake_send_worker
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x128
  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 2: cpus=0 node=0 flags=0x0 nice=0 hung=51s workers=8 idle: 6235 1656 6234 7050 10
pool 6: cpus=1 node=0 flags=0x0 nice=0 hung=8s workers=8 idle: 7052 6140 24 6564 6144
pool 8: cpus=0-1 flags=0x6 nice=0 hung=0s workers=21 manager: 4514
Showing backtraces of running workers in stalled CPU-bound worker pools:
pool 2:
task:kworker/0:3     state:R  running task     stack:0     pid:2567  tgid:2567  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_work
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1274/0x2aa0 kernel/sched/core.c:6863
 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7190
 raw_irqentry_exit_cond_resched+0x30/0x44 kernel/entry/common.c:173
 irqentry_exit+0x1b0/0x2f4 kernel/entry/common.c:216
 exit_to_kernel_mode+0x10/0x1c arch/arm64/kernel/entry-common.c:58
 __el1_irq arch/arm64/kernel/entry-common.c:500 [inline]
 el1_interrupt+0x4c/0x60 arch/arm64/kernel/entry-common.c:510
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
 __slab_free+0x160/0x23c mm/slub.c:5941 (P)
 do_slab_free mm/slub.c:6618 [inline]
 ___cache_free+0x150/0x170 mm/slub.c:6737
 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_slab_alloc+0x2c/0x88 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4953 [inline]
 slab_alloc_node mm/slub.c:5263 [inline]
 __kmalloc_cache_noprof+0x34c/0x698 mm/slub.c:5771
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 nsim_fib6_rt_create drivers/net/netdevsim/fib.c:547 [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+0x9a4/0x6fc0 drivers/net/netdevsim/fib.c:889
 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x990/0xed8 kernel/workqueue.c:3421
 kthread+0x5ac/0x70c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
pool 2:
task:kworker/0:0     state:R  running task     stack:0     pid:9     tgid:9     ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_work
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1274/0x2aa0 kernel/sched/core.c:6863
 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7190
 raw_irqentry_exit_cond_resched+0x30/0x44 kernel/entry/common.c:173
 irqentry_exit+0x1b0/0x2f4 kernel/entry/common.c:216
 exit_to_kernel_mode+0x10/0x1c arch/arm64/kernel/entry-common.c:58
 __el1_irq arch/arm64/kernel/entry-common.c:500 [inline]
 el1_interrupt+0x4c/0x60 arch/arm64/kernel/entry-common.c:510
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
 fib_alias_hw_flags_set+0x570/0x8c4 net/ipv4/fib_trie.c:1062 (P)
 nsim_fib4_event drivers/net/netdevsim/fib.c:-1 [inline]
 nsim_fib_event+0x5c78/0x6fc0 drivers/net/netdevsim/fib.c:884
 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x990/0xed8 kernel/workqueue.c:3421
 kthread+0x5ac/0x70c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
pool 2:
task:kworker/0:4     state:R  running task     stack:0     pid:6212  tgid:6212  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: events nsim_fib_event_work
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:742 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1274/0x2aa0 kernel/sched/core.c:6863
 preempt_schedule_irq+0x80/0x188 kernel/sched/core.c:7190
 raw_irqentry_exit_cond_resched+0x30/0x44 kernel/entry/common.c:173
 irqentry_exit+0x1b0/0x2f4 kernel/entry/common.c:216
 exit_to_kernel_mode+0x10/0x1c arch/arm64/kernel/entry-common.c:58
 __el1_irq arch/arm64/kernel/entry-common.c:500 [inline]
 el1_interrupt+0x4c/0x60 arch/arm64/kernel/entry-common.c:510
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
 should_resched arch/arm64/include/asm/preempt.h:78 [inline] (P)
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] (P)
 _raw_spin_unlock_irqrestore+0x64/0x98 kernel/locking/spinlock.c:194 (P)
 debug_object_active_state+0x16c/0x350 lib/debugobjects.c:1055
 debug_rcu_head_queue kernel/rcu/rcu.h:237 [inline]
 __call_rcu_common kernel/rcu/tree.c:3104 [inline]
 call_rcu+0x6c/0x978 kernel/rcu/tree.c:3239
 free_slab+0x54/0x160 mm/slub.c:3338
 discard_slab+0x48/0x98 mm/slub.c:3346
 __slab_free+0x208/0x23c mm/slub.c:6004
 do_slab_free mm/slub.c:6618 [inline]
 ___cache_free+0x150/0x170 mm/slub.c:6737
 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_slab_alloc+0x2c/0x88 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4953 [inline]
 slab_alloc_node mm/slub.c:5263 [inline]
 __kmalloc_cache_noprof+0x34c/0x698 mm/slub.c:5771
 kmalloc_noprof include/linux/slab.h:957 [inline]
 kzalloc_noprof include/linux/slab.h:1094 [inline]
 nsim_fib4_rt_create drivers/net/netdevsim/fib.c:280 [inline]
 nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:426 [inline]
 nsim_fib4_event drivers/net/netdevsim/fib.c:464 [inline]
 nsim_fib_event+0x3c4/0x6fc0 drivers/net/netdevsim/fib.c:884
 nsim_fib_event_work+0x1c8/0x308 drivers/net/netdevsim/fib.c:1493
 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x990/0xed8 kernel/workqueue.c:3421
 kthread+0x5ac/0x70c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844