BUG: workqueue lockup (2)

Status: upstream: reported C repro on 2023/03/05 21:10
Reported-by: syzbot+94b3d6f6cf4c1e28df60@syzkaller.appspotmail.com
First crash: 1643d, last: 19h36m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (16)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: workqueue lockup (4) block -1 syz, C 47 2488d 2895d 15/29 fixed on 2019/12/13 00:31
linux-5.15 BUG: workqueue lockup missing-backport origin:upstream -1 syz, C done 642 14d 1279d 0/3 upstream: reported C repro on 2023/03/11 08:51
android-5-15 BUG: workqueue lockup origin:upstream missing-backport -1 syz, C error 8439 16h42m 1176d 0/2 upstream: reported C repro on 2023/06/22 22:19
upstream BUG: workqueue lockup (2) -1 syz, C 406 3045d 3203d 5/29 fixed on 2018/05/13 10:02
linux-4.14 BUG: workqueue lockup -1 syz, C 282 1289d 2691d 0/1 upstream: reported C repro on 2019/04/29 11:26
upstream BUG: workqueue lockup -1 syz, C 172 3225d 3236d 3/29 fixed on 2017/11/11 01:37
upstream BUG: workqueue lockup (5) prio:low kernel 1 syz, C done 17772 14m 2431d 0/29 upstream: reported C repro on 2020/01/14 22:04
upstream BUG: workqueue lockup (3) -1 syz, C 1215 2989d 3041d 8/29 fixed on 2018/07/09 18:05
android-6-1 BUG: workqueue lockup origin:upstream missing-backport -1 syz, C error 7967 2h29m 1145d 0/2 upstream: reported C repro on 2023/07/23 17:25
linux-6.6 BUG: workqueue lockup origin:upstream -1 syz, C error 59 36d 450d 0/2 upstream: reported C repro on 2025/06/17 05:08
android-414 BUG: workqueue lockup -1 syz, C 114 2554d 2710d 0/1 public: reported C repro on 2019/04/11 00:00
linux-4.19 BUG: workqueue lockup -1 syz, C error 41 1284d 2698d 0/1 upstream: reported C repro on 2019/04/22 20:37
android-5-10 BUG: workqueue lockup -1 syz, C error 25 1684d 1782d 0/2 closed as invalid on 2022/02/22 17:18
android-49 BUG: workqueue lockup -1 syz, C 69 2478d 2709d 0/3 public: reported C repro on 2019/04/11 08:44
android-6-12 BUG: workqueue lockup -1 1 419d 419d 0/1 auto-obsoleted due to no activity on 2025/10/16 16:41
linux-6.1 BUG: workqueue lockup origin:upstream missing-backport -1 syz, C unreliable 628 3d16h 1283d 0/3 upstream: reported C repro on 2023/03/07 17:51
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2022/11/10 01:20 27m bisect fix android12-5.10-lts OK (0) job log log
2022/09/22 07:49 28m bisect fix android12-5.10-lts OK (0) job log log
2022/08/23 07:16 31m bisect fix android12-5.10-lts OK (0) job log log
2022/07/24 06:47 28m bisect fix android12-5.10-lts OK (0) job log log

Sample crash report:
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 224s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: psi_avgs_work, vmstat_shepherd, kfree_rcu_monitor
workqueue events_unbound: flags=0x2
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/512 refcnt=3
    in-flight: 329:toggle_allocation_gate
workqueue events_power_efficient: flags=0x80
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=2/256 refcnt=3
    pending: gc_worker, check_lifetime
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256 refcnt=5
    in-flight: 15:wg_ratelimiter_gc_entries
    pending: neigh_periodic_work, neigh_periodic_work, reg_check_chans_work
workqueue mm_percpu_wq: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: vmstat_update
workqueue netns: flags=0xe000a
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/1 refcnt=4
    in-flight: 9:cleanup_net
    delayed: cleanup_net
workqueue writeback: flags=0x4a
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    in-flight: 424:wb_workfn
workqueue dm_bufio_cache: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: work_fn
workqueue ipv6_addrconf: flags=0x40008
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/1 refcnt=63
    in-flight: 441:addrconf_dad_work
    delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work
, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=77
    in-flight: 5:addrconf_dad_work
    delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work
, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work
workqueue wg-crypt-wg0: flags=0x28
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    in-flight: 360:wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=4 MAYDAY
    in-flight: 375(RESCUER):wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=3/256 refcnt=6 MAYDAY
    in-flight: 376(RESCUER):wg_packet_decrypt_worker, 362:wg_packet_encrypt_worker
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    in-flight: 20:wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    in-flight: 52:wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg2: flags=0x24
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    in-flight: 418:wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=4 MAYDAY
    in-flight: 381(RESCUER):wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=4 MAYDAY
    in-flight: 382(RESCUER):wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x24
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    in-flight: 7:wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=3/256 refcnt=6 MAYDAY
    in-flight: 361:wg_packet_encrypt_worker, 383(RESCUER):wg_packet_decrypt_worker
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_decrypt_worker, wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=2/256 refcnt=4
    in-flight: 112:wg_packet_handshake_send_worker
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=2/256 refcnt=5 MAYDAY
    in-flight: 384(RESCUER):wg_packet_encrypt_worker
    pending: wg_packet_tx_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    in-flight: 442:wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=4 MAYDAY
    in-flight: 385(RESCUER):wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=3/256 refcnt=6 MAYDAY
    in-flight: 386(RESCUER):wg_packet_encrypt_worker wg_packet_decrypt_worker
    pending: wg_packet_tx_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg2: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    in-flight: 25:wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg0: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg0: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=2/256 refcnt=5 MAYDAY
    in-flight: 388(RESCUER):wg_packet_encrypt_worker
    pending: wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_encrypt_worker, wg_packet_decrypt_worker, wg_packet_tx_worker
workqueue wg-kex-wg1: flags=0x6
  pwq 4: cpus=0-1 flags=0x5 nice=0 active=1/256 refcnt=3
    pending: wg_packet_handshake_send_worker
workqueue wg-crypt-wg1: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=3/256 refcnt=6 MAYDAY
    in-flight: 389(RESCUER):wg_packet_encrypt_worker
    pending: wg_packet_decrypt_worker, wg_packet_tx_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256 refcnt=4
    pending: wg_packet_tx_worker, wg_packet_encrypt_worker, wg_packet_decrypt_worker
workqueue wg-kex-wg2: flags=0x24
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=2
    pending: wg_packet_handshake_receive_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
    pending: wg_packet_handshake_receive_worker
workqueue wg-crypt-wg2: flags=0x28
  pwq 2: cpus=1 node=0 flags=0x1 nice=0 active=1/256 refcnt=4 MAYDAY
    in-flight: 390(RESCUER):wg_packet_encrypt_worker
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 refcnt=3
    pending: wg_packet_encrypt_worker, wg_packet_tx_worker
pool 0: cpus=0 node=0 flags=0x0 nice=0 hung=225s workers=22 idle: 397 400 398 401 402 403 404 406 405 399 391 392 393 394 395 396 409 306 408 407
pool 2: cpus=1 node=0 flags=0x1 nice=0 hung=93s workers=8 manager: 425
pool 4: cpus=0-1 flags=0x5 nice=0 hung=108s workers=8 manager: 358
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P20/1:b..l
	(detected by 0, t=10002 jiffies, g=1513, q=85)
task:kworker/1:0     state:R  running task     stack:    0 pid:   20 ppid:     2 flags:0x00004000
Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker
Call Trace:
 context_switch kernel/sched/core.c:4048 [inline]
 __schedule+0xc03/0x13e0 kernel/sched/core.c:4806
 preempt_schedule_irq+0xaa/0x120 kernel/sched/core.c:5067
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x56/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:__skb_flow_dissect+0x3df/0x5670 net/core/flow_dissector.c:992
Code: 00 48 89 df e8 92 b9 02 fe e9 e1 03 00 00 48 81 c3 40 0d 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 67 b9 02 fe 4c 8b 2b 4d 85 ed 0f 84 82 06 00 00
RSP: 0018:ffffc90000157120 EFLAGS: 00000246
RAX: 1ffff11021ddab48 RBX: ffff88810eed5a40 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffff888116141000 RDI: ffffffff86c3c562
RBP: ffffc90000157630 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff5200002aeea R12: 1ffffffff0d878ac
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 skb_flow_dissect_flow_keys include/linux/skbuff.h:1354 [inline]
 ___skb_get_hash+0x58/0x680 net/core/flow_dissector.c:1558
 __skb_get_hash+0xd2/0x270 net/core/flow_dissector.c:1623
 skb_get_hash include/linux/skbuff.h:1396 [inline]
 encrypt_packet drivers/net/wireguard/send.c:173 [inline]
 wg_packet_encrypt_worker+0x3ab/0x1470 drivers/net/wireguard/send.c:297
 process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301
 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447
 kthread+0x324/0x3b0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
rcu: rcu_preempt kthread starved for 9827 jiffies! g1513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:    0 pid:   13 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4048 [inline]
 __schedule+0xc03/0x13e0 kernel/sched/core.c:4806
 preempt_schedule_irq+0xaa/0x120 kernel/sched/core.c:5067
 irqentry_exit_cond_resched kernel/entry/common.c:365 [inline]
 irqentry_exit+0x56/0x60 kernel/entry/common.c:395
 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1106
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0010:del_timer_sync+0x90/0x1a0 kernel/time/timer.c:1409
Code: 01 00 00 45 8b 36 44 89 f6 81 e6 00 00 20 00 31 ff e8 24 7e 0f 00 41 81 e6 00 00 20 00 0f 84 db 00 00 00 e8 62 7a 0f 00 eb 05 <e8> 5b 7a 0f 00 48 c7 45 c8 00 00 00 00 48 8d 75 c8 48 89 df e8 77
RSP: 0018:ffffc900000d7c38 EFLAGS: 00000246
RAX: ffffffff815539fe RBX: ffffc900000d7ca0 RCX: 0000000000000000
RDX: ffff8881002962c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900000d7c70 R08: ffff8881002962c7 R09: 1ffff11020052c58
R10: dffffc0000000000 R11: ffffed1020052c59 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc900000d7ca0
 schedule_timeout+0x161/0x330 kernel/time/timer.c:1914
 rcu_gp_fqs_loop kernel/rcu/tree.c:1943 [inline]
 rcu_gp_kthread+0x109a/0x2810 kernel/rcu/tree.c:2117
 kthread+0x324/0x3b0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
sched: RT throttling activated
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 89 df             	mov    %rbx,%rdi
   3:	e8 92 b9 02 fe       	call   0xfe02b99a
   8:	e9 e1 03 00 00       	jmp    0x3ee
   d:	48 81 c3 40 0d 00 00 	add    $0xd40,%rbx
  14:	48 89 d8             	mov    %rbx,%rax
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  22:	fc ff df
  25:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
* 29:	74 08                	je     0x33 <-- trapping instruction
  2b:	48 89 df             	mov    %rbx,%rdi
  2e:	e8 67 b9 02 fe       	call   0xfe02b99a
  33:	4c 8b 2b             	mov    (%rbx),%r13
  36:	4d 85 ed             	test   %r13,%r13
  39:	0f 84 82 06 00 00    	je     0x6c1

Crashes (17116):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/03 14:17 android13-5.10-lts d1d91e95d6f1 6a988719 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/03 02:10 android13-5.10-lts 4185c27befd4 85995287 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/31 14:36 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/30 14:34 android13-5.10-lts 174d3ccb72b8 2f52988a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/03 04:48 android13-5.10-lts 50b3a256e550 e611ffe1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/29 06:13 android13-5.10-lts 50b3a256e550 19622d9d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/19 23:48 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/19 13:02 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/19 08:51 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/14 22:37 android13-5.10-lts 50b3a256e550 2130f682 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/14 13:27 android13-5.10-lts 50b3a256e550 2130f682 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/13 05:31 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 BUG: workqueue lockup
2026/07/12 22:04 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 BUG: workqueue lockup
2026/07/12 18:00 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 BUG: workqueue lockup
2026/07/12 09:33 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 BUG: workqueue lockup
2026/07/12 05:13 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 BUG: workqueue lockup
2026/07/06 06:25 android13-5.10-lts 1bb06dbd8c78 fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/21 17:03 android13-5.10-lts 6321e6c974f1 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/21 05:18 android13-5.10-lts 6321e6c974f1 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/21 02:03 android13-5.10-lts 6321e6c974f1 43bfcdb0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/15 05:27 android13-5.10-lts d11359bcf2ac 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/14 19:18 android13-5.10-lts d11359bcf2ac 1d2f3589 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2023/03/05 21:07 android12-5.10-lts 416c4356f372 f8902b57 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/28 16:49 android13-5.10-lts 174d3ccb72b8 e2fa417d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/28 02:26 android13-5.10-lts 174d3ccb72b8 69a01293 .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/16 23:03 android13-5.10-lts e334a66065d3 746171ee .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/16 19:42 android13-5.10-lts e334a66065d3 746171ee .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/10 17:42 android13-5.10-lts 447db0046f21 5d63f80b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/09 05:41 android13-5.10-lts 447db0046f21 5d63f80b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/07 19:33 android13-5.10-lts 9fe41ae8657d e4ef95d6 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/29 10:02 android13-5.10-lts 50b3a256e550 19622d9d .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/28 08:04 android13-5.10-lts 50b3a256e550 45ae1df4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/27 05:41 android13-5.10-lts 50b3a256e550 492bab15 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/19 15:05 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/19 10:55 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/18 09:56 android13-5.10-lts 50b3a256e550 72524a66 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/11 23:12 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/11 21:28 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/07/11 17:43 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/30 10:41 android13-5.10-lts 79e905dd56a7 fff8d0a0 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/06/15 01:23 android13-5.10-lts d11359bcf2ac 1d2f3589 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2022/10/08 18:58 android12-5.10-lts bc7618b4936f aea5da89 .config strace log report syz [disk image] [vmlinux] ci2-android-5-10 BUG: workqueue lockup
2022/05/25 21:03 android12-5.10-lts 0974b8411a58 3037caa9 .config console log report syz ci2-android-5-10 BUG: workqueue lockup
2026/09/10 04:40 android13-5.10-lts 452567d1985b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/10 01:17 android13-5.10-lts 452567d1985b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/09 22:51 android13-5.10-lts 452567d1985b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/09 18:31 android13-5.10-lts 452567d1985b 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/09 11:30 android13-5.10-lts 452567d1985b 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/09 07:38 android13-5.10-lts 452567d1985b 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/09 03:15 android13-5.10-lts 452567d1985b 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/08 22:05 android13-5.10-lts 452567d1985b 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/08 20:22 android13-5.10-lts 452567d1985b 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/08 19:18 android13-5.10-lts 452567d1985b 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/08 16:54 android13-5.10-lts 452567d1985b 243b72f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/08 12:32 android13-5.10-lts 452567d1985b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/08 02:29 android13-5.10-lts 452567d1985b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/08 00:25 android13-5.10-lts 452567d1985b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/07 20:33 android13-5.10-lts 452567d1985b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/07 13:00 android13-5.10-lts 452567d1985b 680aa3e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/07 03:27 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/06 19:48 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/06 14:33 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/06 03:35 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/06 02:05 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/05 18:33 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/05 12:24 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/04 23:40 android13-5.10-lts 452567d1985b 4f7b22a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/04 21:20 android13-5.10-lts 452567d1985b f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/04 11:53 android13-5.10-lts 452567d1985b f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/04 05:20 android13-5.10-lts 452567d1985b 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/04 04:06 android13-5.10-lts 452567d1985b 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/03 07:04 android13-5.10-lts 4185c27befd4 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/02 23:43 android13-5.10-lts 4185c27befd4 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/02 21:28 android13-5.10-lts 4185c27befd4 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/02 14:31 android13-5.10-lts 4185c27befd4 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/02 07:01 android13-5.10-lts 4185c27befd4 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/09/02 04:45 android13-5.10-lts 4185c27befd4 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 21:08 android13-5.10-lts 4f08b4b867e1 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 17:03 android13-5.10-lts 4f08b4b867e1 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 12:36 android13-5.10-lts 4f08b4b867e1 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 06:58 android13-5.10-lts 174d3ccb72b8 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 05:42 android13-5.10-lts 174d3ccb72b8 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/09/01 02:27 android13-5.10-lts 174d3ccb72b8 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/08/31 21:20 android13-5.10-lts 174d3ccb72b8 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/31 19:23 android13-5.10-lts 174d3ccb72b8 316d9396 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/30 18:36 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/30 13:16 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10-perf BUG: workqueue lockup
2026/08/30 04:33 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/29 12:05 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2026/08/29 09:37 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 BUG: workqueue lockup
2022/03/12 13:24 android12-5.10-lts e1b86e7f5cbb 9e8eaa75 .config console log report info ci2-android-5-10 BUG: workqueue lockup
* Struck through repros no longer work on HEAD.