INFO: rcu detected stall in process_one

Title	Replies (including bot)	Last reply
INFO: rcu detected stall in process_one_work (3)	1 (3)	2020/11/06 11:30

Title

Replies (including bot)

Last reply

INFO: rcu detected stall in process_one_work (3)

1 (3)

2020/11/06 11:30

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-5.15	INFO: rcu detected stall in process_one_work	1				3	766d	869d	0/3	auto-obsoleted due to no activity on 2024/09/27 05:22
linux-5.15	INFO: rcu detected stall in process_one_work (3) origin:upstream	1	syz		error	3	199d	315d	0/3	upstream: reported syz repro on 2025/09/13 13:36
upstream	INFO: rcu detected stall in process_one_work (2) kernel	1				1	2296d	2296d	0/29	auto-closed as invalid on 2020/07/10 22:43
upstream	INFO: rcu detected stall in process_one_work (4) kernel	1				1	1770d	1770d	0/29	auto-closed as invalid on 2021/12/18 04:26
upstream	INFO: rcu detected stall in process_one_work (8) kernel	1				3	949d	998d	0/29	auto-obsoleted due to no activity on 2024/03/18 23:07
linux-5.15	INFO: rcu detected stall in process_one_work (2)	1				1	585d	585d	0/3	auto-obsoleted due to no activity on 2025/03/27 21:48
upstream	INFO: rcu detected stall in process_one_work kernel	1				8	2535d	2978d	0/29	auto-closed as invalid on 2019/11/14 14:39
upstream	INFO: rcu detected stall in process_one_work (9) prio:high kernel	1	C	error	error	21	14d	782d	0/29	upstream: reported C repro on 2024/06/03 12:55
upstream	INFO: rcu detected stall in process_one_work (5) kernel	1				1	1416d	1416d	0/29	auto-obsoleted due to no activity on 2022/12/07 18:00
linux-6.1	INFO: rcu detected stall in process_one_work origin:upstream	1	C		error	2	681d	928d	0/3	upstream: reported C repro on 2024/01/09 18:19

Created	Duration	User	Patch	Repo	Result
2020/11/06 04:40	3h46m	bisect fix		upstream	OK (1) job log
2020/10/07 04:17	22m	bisect fix		upstream	OK (0) job log log

Created

Duration

User

Patch

Repo

Result

2020/11/06 04:40

3h46m

bisect fix

upstream

OK (1) job log

2020/10/07 04:17

22m

bisect fix

upstream

OK (0) job log log

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6878 at kernel/sched/core.c:3013 rq_unlock kernel/sched/sched.h:1326 [inline] WARNING: CPU: 1 PID: 6878 at kernel/sched/core.c:3013 try_invoke_on_locked_down_task+0x214/0x2c0 kernel/sched/core.c:3019 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6878 Comm: kworker/1:0 Not tainted 5.9.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp srcu_invoke_callbacks Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x4a kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:try_invoke_on_locked_down_task+0x214/0x2c0 kernel/sched/core.c:3013 Code: 45 31 f6 49 39 c0 74 3a 8b 74 24 38 49 8d 78 18 4c 89 04 24 e8 2d 99 08 00 4c 8b 04 24 4c 89 c7 e8 41 33 a5 06 e9 29 ff ff ff <0f> 0b e9 86 fe ff ff 4c 89 ee 48 89 ef 41 ff d4 41 89 c6 e9 11 ff RSP: 0018:ffffc90000da8bd8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff920001b517d RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff81612380 RDI: ffff8880953c2540 RBP: ffff8880953c2540 R08: 0000000000000033 R09: ffffffff89bcb363 R10: 0000000000000629 R11: 0000000000000001 R12: ffffffff81612380 R13: ffffc90000da8d00 R14: ffff8880953c28c0 R15: ffff8880ae736c00 rcu_print_task_stall kernel/rcu/tree_stall.h:267 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:475 [inline] check_cpu_stall kernel/rcu/tree_stall.h:634 [inline] rcu_pending kernel/rcu/tree.c:3637 [inline] rcu_sched_clock_irq.cold+0x92e/0xccd kernel/rcu/tree.c:2519 update_process_times+0x25/0xa0 kernel/time/timer.c:1710 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x1d5/0xfc0 kernel/time/hrtimer.c:1588 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1650 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 </IRQ> __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xb2/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x8c/0xe0 kernel/locking/spinlock.c:191 Code: 48 c7 c0 c8 3b b6 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d f3 0f c0 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 95 87 59 f9 65 8b 05 8e d2 0b 78 RSP: 0018:ffffc90003ac7c28 EFLAGS: 00000286 RAX: 1ffffffff136c779 RBX: 0000000000000286 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffffc90000dd7c30 R08: 0000000000000001 R09: ffffffff8c5f3a0f R10: fffffbfff18be741 R11: 0000000000000001 R12: ffffe8ffffd0a740 R13: ffffe8ffffd0a680 R14: ffffe8ffffd0a640 R15: ffffc90000dd7c18 srcu_invoke_callbacks+0x207/0x399 kernel/rcu/srcutree.c:1201 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..