INFO: rcu detected stall in worker_thread (9)

Status: upstream: reported C repro on 2023/10/07 18:33
Subsystems: netfilter
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+225bfad78b079744fd5e@syzkaller.appspotmail.com
First crash: 1129d, last: 13h54m
Cause bisection: introduced by (bisect log) :
commit c2368b19807affd7621f7c4638cd2e17fec13021
Author: Jiri Pirko <jiri@nvidia.com>
Date: Fri Jul 29 07:10:35 2022 +0000

  net: devlink: introduce "unregistering" mark and use it during devlinks iteration

Crash: INFO: rcu detected stall in corrupted (log)
Repro: syz .config
  
▶ ▼ ✨ AI Jobs (2)
ID Workflow Result Correct Bug Created Started Finished Revision
0770d1dd assessment-security DenialOfService: ❌ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ INFO: rcu detected stall in worker_thread (9) 2026/05/31 21:44 2026/05/31 21:44 2026/05/31 21:53 6b4a8443
dc6b7e2d assessment-security 💥 INFO: rcu detected stall in worker_thread (9) 2026/05/15 07:03 2026/05/15 07:03 2026/05/15 07:04 6ccb967e
▶ ▼ Discussions (25)
Title Replies (including bot) Last reply
[syzbot] Monthly netfilter report (Apr 2026) 0 (1) 2026/04/29 20:32
[syzbot] Monthly netfilter report (Mar 2026) 0 (1) 2026/03/31 08:07
[syzbot] Monthly netfilter report (Feb 2026) 0 (1) 2026/02/26 12:58
[syzbot] Monthly mm report (Dec 2025) 0 (1) 2025/12/18 10:06
[syzbot] Monthly netfilter report (Nov 2025) 0 (1) 2025/11/24 12:38
[syzbot] Monthly netfilter report (Sep 2025) 0 (1) 2025/09/20 18:33
[syzbot] Monthly mm report (Aug 2025) 0 (1) 2025/08/14 12:42
[syzbot] Monthly mm report (Jul 2025) 0 (1) 2025/07/14 07:23
[syzbot] Monthly mm report (Jun 2025) 0 (1) 2025/06/13 12:25
[syzbot] Monthly mm report (May 2025) 0 (1) 2025/05/12 13:34
[syzbot] Monthly mm report (Apr 2025) 0 (1) 2025/04/09 07:11
[syzbot] Monthly mm report (Mar 2025) 0 (1) 2025/03/08 22:16
[syzbot] Monthly mm report (Feb 2025) 0 (1) 2025/02/05 12:44
[syzbot] Monthly mm report (Jan 2025) 0 (1) 2025/01/06 10:01
[syzbot] Monthly netfilter report (Dec 2024) 0 (1) 2024/12/13 13:16
[syzbot] Monthly mm report (Nov 2024) 1 (2) 2024/11/04 12:58
[syzbot] Monthly mm report (Oct 2024) 0 (1) 2024/10/03 09:02
[syzbot] Monthly usb report (Sep 2024) 0 (1) 2024/09/14 10:58
[syzbot] Monthly mm report (Aug 2024) 0 (1) 2024/08/02 16:15
[syzbot] Monthly batman report (Jul 2024) 0 (1) 2024/07/15 18:58
[syzbot] Monthly mm report (Jul 2024) 0 (1) 2024/07/01 10:28
[syzbot] Monthly serial report (May 2024) 0 (1) 2024/05/06 13:18
[syzbot] Monthly netfilter report (Feb 2024) 0 (1) 2024/02/09 08:36
[syzbot] [net?] [usb?] INFO: rcu detected stall in worker_thread (9) 0 (3) 2023/11/14 18:18
[PATCH] media: imon: fix stall in worker_thread 4 (4) 2023/10/14 07:28
▶ ▼ Similar bugs (21)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in worker_thread (3) mm cgroups 1 1 2493d 2493d 0/29 closed as invalid on 2020/01/08 05:33
upstream INFO: rcu detected stall in worker_thread (4) cgroups mm 1 28 2493d 2493d 0/29 closed as invalid on 2020/01/09 08:13
linux-5.15 INFO: rcu detected stall in worker_thread 1 1 1133d 1133d 0/3 auto-obsoleted due to no activity on 2024/01/09 18:17
upstream INFO: rcu detected stall in worker_thread (8) kernel 1 1 1276d 1276d 0/29 auto-obsoleted due to no activity on 2023/08/07 05:14
upstream INFO: rcu detected stall in worker_thread (5) kernel 1 2 1617d 1654d 0/29 auto-closed as invalid on 2022/08/31 00:50
android-6-12 INFO: rcu detected stall in worker_thread 1 1 390d 390d 0/1 auto-obsoleted due to no activity on 2026/01/09 16:24
upstream INFO: rcu detected stall in worker_thread (2) mm cgroups 1 12 2493d 2493d 0/29 closed as invalid on 2020/01/08 05:23
upstream INFO: rcu detected stall in worker_thread cgroups mm 1 150 2528d 2529d 0/29 closed as invalid on 2019/12/04 14:14
linux-5.15 INFO: rcu detected stall in worker_thread (3) 1 2 38d 51d 0/3 upstream: reported on 2026/09/15 04:10
linux-6.1 INFO: rcu detected stall in worker_thread 1 6 869d 899d 0/3 auto-obsoleted due to no activity on 2024/09/27 16:46
linux-6.6 INFO: rcu detected stall in worker_thread origin:lts-only 1 syz, C done 394 5h25m 505d 0/2 upstream: reported C repro on 2025/06/18 07:15
upstream INFO: rcu detected stall in worker_thread (6) kernel 1 1 1493d 1493d 0/29 auto-obsoleted due to no activity on 2023/01/12 15:50
linux-6.1 INFO: rcu detected stall in worker_thread (3) 1 2 80d 108d 0/3 upstream: reported on 2026/07/20 15:45
linux-5.15 INFO: rcu detected stall in worker_thread (2) 1 4 872d 877d 0/3 auto-obsoleted due to no activity on 2024/09/24 04:34
upstream INFO: rcu detected stall in worker_thread (7) kernel 1 1 1386d 1386d 0/29 auto-obsoleted due to no activity on 2023/04/27 16:37
linux-6.1 INFO: rcu detected stall in worker_thread (2) 1 1 653d 653d 0/3 auto-obsoleted due to no activity on 2025/05/01 18:18
android-6-12 INFO: rcu detected stall in worker_thread (2) 1 1 19d 19d 0/1 premoderation: reported on 2026/10/17 12:47
upstream INFO: task hung in crda_timeout_work (8) wireless prio:high 1 syz, C done error 1233 10h26m 769d 0/29 upstream: reported C repro on 2024/09/27 16:53
upstream INFO: task hung in reg_process_self_managed_hints prio:high wireless 1 syz, C done 2128 28m 1172d 0/29 upstream: reported C repro on 2023/08/21 16:36
android-5-15 BUG: soft lockup in worker_thread origin:lts 1 syz, C done 1 801d 801d 0/2 auto-obsoleted due to no activity on 2024/12/04 04:19
upstream INFO: task hung in synchronize_rcu (4) prio:high bluetooth 1 syz, C done error 5024 16h44m 1281d 0/29 upstream: reported C repro on 2023/05/04 02:01
▶ ▼ Last patch testing requests (6)
Created Duration User Patch Repo Result
2024/01/13 14:32 23m retest repro upstream report log
2023/12/13 13:09 18m retest repro upstream report log
2023/12/13 13:09 16m retest repro upstream report log
2023/12/13 13:09 23m retest repro upstream no crash log
2023/10/10 03:05 48m twuufnxlz@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git ce36c8b14987 OK log
2023/10/08 11:16 20m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK log

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5644/3:b..l.. P4958/1:b..l.. P5637/1:b..l..
rcu: 	(detected by 0, t=10503 jiffies, g=12897, q=7 ncpus=2)
task:syz-executor415 state:R  running task     stack:26696 pid:5637  tgid:5637  ppid:5633   task_flags:0x400040 flags:0x00080800
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7561
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
 _raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
 spin_unlock include/linux/spinlock.h:401 [inline]
 wp_page_copy mm/memory.c:4171 [inline]
 do_wp_page+0x3da8/0x4b60 mm/memory.c:4535
 handle_pte_fault mm/memory.c:6651 [inline]
 __handle_mm_fault mm/memory.c:6776 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6943
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f71e46e7eca
RSP: 002b:00007ffc381653e0 EFLAGS: 00010246
RAX: 0000000000000008 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00007f71e47a8500
RBP: 000000000000160c R08: 00007f71e47a8500 R09: 0000000000000000
R10: 000055559525d790 R11: 0000000000000246 R12: 0000000000000000
R13: 431bde82d7b634db R14: 00007f71e47a1440 R15: 00007ffc381655d0
 </TASK>
task:kworker/0:3     state:R  running task     stack:28384 pid:4958  tgid:4958  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient gc_worker
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
 irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 b0 32 5e 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 b2 dc 1b 13 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 7a 1d 6c ff cc 48 8d 3d 37 87 fc
RSP: 0018:ffffc9000f36f940 EFLAGS: 00000292
RAX: 1df3c9e36d75da00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000a657c1f2 RSI: ffffffff8e92d156 RDI: ffffffff8c8e8c80
RBP: ffff88807fceddc0 R08: ffffffff8a1aa2e4 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff233adf8 R12: ffffffff8ff5a320
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 gc_worker+0x298/0x1890 net/netfilter/nf_conntrack_core.c:1530
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
task:syz-executor415 state:R  running task     stack:27912 pid:5644  tgid:5644  ppid:5637   task_flags:0x400040 flags:0x00080800
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7561
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
 _raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
 spin_unlock include/linux/spinlock.h:401 [inline]
 filemap_map_pages+0x1aba/0x2170 mm/filemap.c:4015
 do_fault_around mm/memory.c:6027 [inline]
 do_read_fault mm/memory.c:6060 [inline]
 do_fault mm/memory.c:6203 [inline]
 do_pte_missing+0x2067/0x3570 mm/memory.c:4763
 handle_pte_fault mm/memory.c:6627 [inline]
 __handle_mm_fault mm/memory.c:6776 [inline]
 handle_mm_fault+0x1a53/0x3750 mm/memory.c:6943
 do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f71e46f421f
RSP: 002b:00007ffc38164a78 EFLAGS: 00010287
RAX: 00000000000000cd RBX: 00007ffc38164fb0 RCX: 0000000000000000
RDX: 00007ffc38165078 RSI: 0000000000000025 RDI: 00007f71e47720cd
RBP: 00007ffc38165768 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc38165090
R13: 0000000000000000 R14: 00007f71e47720cd R15: 00007ffc38165078
 </TASK>
rcu: rcu_preempt kthread starved for 10576 jiffies! g12897 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=1
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:28152 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5820 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9c/0x340 kernel/rcu/tree.c:2330
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5649 Comm: syz-executor415 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:sched_clock_cpu+0xc/0x440 kernel/sched/clock.c:395
Code: aa 2e 93 ff e9 90 09 70 ff cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 65 48 8b 05 74 c8
RSP: 0018:ffffc90000a08fa0 EFLAGS: 00000006
RAX: 0000000000000001 RBX: ffff8880b8324538 RCX: 8000000001000000
RDX: 0000000000000000 RSI: ffffffff8c8e8c60 RDI: 0000000000000001
RBP: ffffc90000a08fb0 R08: ffffffff919d6fbf R09: 1ffffffff233adf7
R10: dffffc0000000000 R11: ffffc90000a08ff8 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888036da0000 R15: ffffffff8e9767d8
FS:  00007f71e46cd6c0(0000) GS:ffff888123720000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000058 CR3: 00000000278e0000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 irqtime_account_irq+0x66/0x260 kernel/sched/cputime.c:70
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x99/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:syscall_enter_from_user_mode_work include/linux/entry-common.h:144 [inline]
RIP: 0010:do_syscall_64+0xcd/0x520 arch/x86/entry/syscall_64.c:81
Code: 8b 05 5f 76 be 08 85 c0 75 0f 65 8b 05 d4 71 be 08 85 c0 0f 85 e7 02 00 00 0f 1f 44 00 00 90 90 e8 38 92 cf f5 fb 4d 8b 7d 08 <41> f6 c7 bf 74 73 41 f6 c7 20 74 10 4c 89 f7 e8 9f c1 af f5 84 c0
RSP: 0018:ffffc900038f7ef0 EFLAGS: 00000206
RAX: 0000000003c95c77 RBX: ffffc900038f7ef0 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e6a2302 RDI: ffffffff8c8e8c80
RBP: ffffc900038f7f38 R08: ffffffff919d6fbf R09: 1ffffffff233adf7
R10: dffffc0000000000 R11: fffffbfff233adf8 R12: 0000000000000027
R13: ffff888036da0000 R14: ffffc900038f7f48 R15: 0000000000000000
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f71e46f5937
Code: 02 08 00 ba 55 00 00 00 48 8d 35 a3 cc 07 00 48 8d 3d b3 cc 07 00 e8 38 dc fe ff e8 83 1f 00 00 0f 1f 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 41 56 31 c0 41 55 49 89 cd 41 54 49 89
RSP: 002b:00007f71e46ccb48 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 00007f71e46cccb0 RCX: 00007f71e46f5937
RDX: 00007f71e46ccb80 RSI: 00007f71e46cccb0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007f71e46cdcdc R09: 00007f71e46cdcdc
R10: 0000000000000000 R11: 0000000000000206 R12: 00007f71e47a7b2c
R13: 0000000000000000 R14: 00007ffc38165390 R15: 00007ffc38165478
 </TASK>

Crashes (6237):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/29 12:26 upstream c339f4010dea b1d00f76 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/09/01 16:28 upstream 786262be6048 587f6b29 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: rcu detected stall in worker_thread
2026/08/09 14:12 upstream 06cf61899d64 5d63f80b .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/04/08 10:31 upstream 3036cd0d3328 2c961e87 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in worker_thread
2023/11/14 18:18 upstream 9bacdd8996c7 cb976f63 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/10/25 20:26 upstream 21a7f44fd076 1d9ca40b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/10/15 08:26 upstream 0fcb05b72344 8fb0ae89 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2025/02/08 17:42 upstream 8f6629c004b1 ef44b750 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: rcu detected stall in worker_thread
2026/10/30 22:39 net d8a4f4c59da5 0ec395f8 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/21 05:41 net c82b797abe66 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/03 09:08 net 544d85de4dc2 6a988719 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/02 21:38 net-next 071876fd5048 57bbd979 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/24 22:31 net-next a9e94a7faa56 3c3cdf19 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/21 10:14 net-next 8830e65ed46d 853b104b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/30 22:31 net-next 1b78070aaef6 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/29 13:17 net-next 1b78070aaef6 2f52988a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/07 01:14 net-next f37228367375 c38879ea .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/20 23:48 upstream a4ff2be345d0 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/08/14 12:41 upstream 3aa1dcaa4f6f b13552fe .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/08/08 22:02 upstream a59f57e2aa12 5d63f80b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/07/30 03:59 upstream fc02acf6ac0c cb1587ea .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2023/12/20 20:03 upstream 55cb5f43689d 3ad490ea .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2023/10/11 13:23 upstream 1c8b86a3799f 83165b57 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/10/31 03:36 upstream d89e1d186ec9 0ec395f8 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/10/11 09:29 upstream a5ebb76233b7 4f92358f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/10/03 07:38 upstream ce1e0223d8ad 57bbd979 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/10/02 03:45 upstream d24e8ac715de 6d32eb1f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/10/29 21:47 net dda51b737216 b1d00f76 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/25 15:59 net 7076f684d513 1d9ca40b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/13 05:18 net 4f6ac74fa594 745a967f .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/21 09:29 net 1e24c4f2ee44 853b104b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/20 22:47 net c82b797abe66 853b104b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/20 06:43 net 564973a259ec 1e72964b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/27 22:59 net-next 734bef548a96 96923c60 .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/22 08:28 net-next 279d5c8afcd3 4ba27f85 .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/17 20:36 net-next 98c2ad4f5d80 432c0077 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/13 10:57 net-next d0bd617658dd 745a967f .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/09 20:07 net-next d8674294aefe a8add9cd .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/03 13:05 net-next cfb7793d1bc0 57bbd979 .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/02 18:09 net-next 071876fd5048 57bbd979 .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/09/22 02:13 net-next 2fba93180872 e12281bd .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/21 13:36 net-next 91ec20351349 1e72964b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/21 06:19 net-next 91ec20351349 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/21 04:20 net-next 91ec20351349 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/21 01:07 net-next 91ec20351349 1e72964b .config strace log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/18 11:01 net-next 47226bbdef69 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/25 00:47 linux-next 4b18edbd8e70 23caa175 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in worker_thread
2026/08/24 04:51 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing e1e6e541c5c9 1e72964b .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in worker_thread
2023/10/03 18:27 upstream ce36c8b14987 65faba36 .config console log report syz [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/11/05 04:34 upstream 05441d697f7f 2ee8459f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/11/04 13:42 upstream 05441d697f7f 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/11/04 05:47 upstream 05441d697f7f 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: rcu detected stall in worker_thread
2026/11/02 01:16 upstream 46fec1c3029b 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/31 02:13 upstream d89e1d186ec9 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/28 16:10 upstream 65ba8f34ec88 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/27 04:30 upstream 6b4b543fa187 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/10/26 06:14 upstream 12392d40a3be 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/26 03:30 upstream 12392d40a3be 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/10/25 12:02 upstream 5b0764a53235 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/25 06:43 upstream 5b0764a53235 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/10/24 09:52 upstream 26344c0dd32a 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in worker_thread
2026/08/09 16:17 upstream b643e495ae92 5d63f80b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto INFO: rcu detected stall in worker_thread
2026/10/24 19:33 upstream 90b754d40117 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: rcu detected stall in worker_thread
2026/11/01 05:00 net cb284914e749 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/31 06:28 net d8a4f4c59da5 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/30 08:01 net 5838f10563d5 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/29 19:59 net dda51b737216 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/29 17:01 net dda51b737216 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/28 20:13 net 5d7f3375cd57 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/27 17:34 net f75062536e2d 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/23 17:30 net 734bef548a96 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/21 11:38 net c0703534b223 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/21 02:47 net 305deb54c6c2 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: rcu detected stall in worker_thread
2026/11/04 12:40 net-next 7b6ab4dbc156 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/11/03 09:10 net-next 7b6ab4dbc156 0a94d799 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/27 10:57 net-next 734bef548a96 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/26 20:33 net-next 734bef548a96 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/23 23:26 net-next 734bef548a96 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/23 02:06 net-next 1a2c35c49cc7 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: rcu detected stall in worker_thread
2026/11/05 02:58 linux-next 8b7179210b22 2ee8459f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/11/04 16:24 linux-next 8b7179210b22 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/11/04 06:53 linux-next d6bcfc94eb4d 5af5b6c6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/11/03 18:38 linux-next d6bcfc94eb4d d02c3949 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/11/02 08:08 linux-next 7649ba73f9e7 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/31 19:07 linux-next 7649ba73f9e7 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/31 17:54 linux-next 7649ba73f9e7 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/29 14:17 linux-next 6d0933ae9d46 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/29 03:27 linux-next 6d0933ae9d46 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/28 17:06 linux-next 6d0933ae9d46 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/28 07:05 linux-next 151a134a4e6e 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/27 22:01 linux-next 151a134a4e6e 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce INFO: rcu detected stall in worker_thread
2026/10/25 15:49 linux-next 20a33c6b6cbe 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/22 01:50 linux-next 9a482184d910 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/21 23:44 linux-next 9a482184d910 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/20 00:45 linux-next 3d229ce89862 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: rcu detected stall in worker_thread
2026/10/30 21:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: rcu detected stall in worker_thread
2026/10/28 11:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: rcu detected stall in worker_thread
2026/10/24 13:36 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: rcu detected stall in worker_thread
2026/10/22 04:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: rcu detected stall in worker_thread
2026/10/20 09:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: rcu detected stall in worker_thread
2026/10/21 01:24 bpf f909e534f5e3 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce BUG: soft lockup in worker_thread
2026/10/31 01:02 bpf-next 2ac399209a66 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in worker_thread
2026/10/29 05:17 bpf-next d80373a8e70d b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in worker_thread
2026/10/27 06:48 bpf-next 4169c9c90532 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in worker_thread
2026/10/26 00:34 bpf-next 4169c9c90532 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in worker_thread
2026/10/28 05:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in worker_thread
2026/10/20 06:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7a19f0cc94ad 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: soft lockup in worker_thread
2026/09/30 08:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e8e60d3ddd25 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 BUG: workqueue lockup in cleanup_net
* Struck through repros no longer work on HEAD.