INFO: rcu detected stall in getpid (3)

Date	Name	Commit	Repro	Result
2024/09/30	linux-5.15.y (ToT)	3a5928702e71	C	[report] INFO: rcu detected stall in syscall_exit_to_user_mode
2024/05/17	upstream (ToT)	ea5f6ad9ad96	C	[report] INFO: rcu detected stall in corrupted
2024/09/30	upstream (ToT)	9852d85ec9d4	C	Didn't crash

Date

Name

Commit

Repro

Result

2024/09/30

linux-5.15.y (ToT)

3a5928702e71

[report] INFO: rcu detected stall in syscall_exit_to_user_mode

2024/05/17

upstream (ToT)

ea5f6ad9ad96

[report] INFO: rcu detected stall in corrupted

2024/09/30

upstream (ToT)

9852d85ec9d4

Didn't crash

Kernel	Title	Count	Last	Reported	Patched	Status
linux-5.15	INFO: rcu detected stall in getpid	1	443d	443d	0/3	auto-obsoleted due to no activity on 2023/12/16 22:03
linux-5.15	INFO: rcu detected stall in getpid (2)	1	324d	324d	0/3	auto-obsoleted due to no activity on 2024/04/13 05:27
upstream	INFO: rcu detected stall in getpid kernel	10	104d	217d	0/28	auto-obsoleted due to no activity on 2024/11/09 06:00

linux-5.15

INFO: rcu detected stall in getpid

443d

0/3

auto-obsoleted due to no activity on 2023/12/16 22:03

linux-5.15

INFO: rcu detected stall in getpid (2)

324d

0/3

auto-obsoleted due to no activity on 2024/04/13 05:27

upstream

INFO: rcu detected stall in getpid kernel

104d

217d

0/28

auto-obsoleted due to no activity on 2024/11/09 06:00


Created	Duration	User	Repo	Result
2024/10/15 07:29	0m	fix candidate	upstream	error job log
2024/10/15 01:41	0m	bisect fix	linux-5.15.y	error job log
2024/08/31 04:28	1h08m	bisect fix	linux-5.15.y	OK (0) job log log
2024/06/25 05:27	2h15m	bisect fix	linux-5.15.y	OK (0) job log log

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=3561, q=22) rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294966900-4294956398), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 10502 jiffies! g3561 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:27000 pid: 15 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 </TASK> rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 1 CPU: 1 PID: 3553 Comm: syz-executor239 Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487 print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:592 check_cpu_stall kernel/rcu/tree_stall.h:745 [inline] rcu_pending kernel/rcu/tree.c:3932 [inline] rcu_sched_clock_irq+0xa38/0x1150 kernel/rcu/tree.c:2619 update_process_times+0x196/0x200 kernel/time/timer.c:1818 tick_sched_handle kernel/time/tick-sched.c:254 [inline] tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline] RIP: 0010:lock_acquire+0x14d/0x4f0 kernel/locking/lockdep.c:5619 Code: c3 ec 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 c4 02 00 00 83 3b 00 0f 85 5c 01 00 00 4c 8d bc 24 80 00 00 00 <4c> 89 fb 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 ff e8 5d 88 67 00 RSP: 0018:ffffc90002e77d80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880232e642c RCX: ffffffff8162ac6c RDX: 0000000000000000 RSI: ffffffff8ad8f5e0 RDI: ffffffff8ad8f5a0 RBP: ffffc90002e77ed8 R08: dffffc0000000000 R09: fffffbfff1bc8c56 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005cefb8 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90002e77e00 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312 rcu_read_lock include/linux/rcupdate.h:739 [inline] __task_pid_nr_ns+0x20/0x420 kernel/pid.c:497 task_tgid_vnr include/linux/sched.h:1587 [inline] __do_sys_getpid+0x19/0x20 kernel/sys.c:945 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f2acdcd4387 Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d 52 0f 09 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 53 d8 fd ff 0f 1f 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 31 f6 31 ff e9 c7 e5 02 00 0f 1f 80 00 RSP: 002b:00007ffd150fb4c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000027 RAX: ffffffffffffffda RBX: 00007ffd150fb630 RCX: 00007f2acdcd4387 RDX: 00007ffd150fb500 RSI: 00007ffd150fb630 RDI: 0000000000000021 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000555555999370 R13: 0000000000000002 R14: 00007ffd150fbb00 R15: 00007ffd150fbaf0 </TASK>

Crashes (6):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/05/17 06:42	linux-5.15.y	284087d4f7d5	c2e07261	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid
2024/09/10 10:03	linux-5.15.y	14e468424d3e	784df80e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid
2024/09/05 01:37	linux-5.15.y	14e468424d3e	dfbe2ed4	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid
2024/09/04 11:47	linux-5.15.y	fa93fa65db6e	9d47f20a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid
2024/07/24 08:58	linux-5.15.y	7c6d66f0266f	57b2edb1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid
2024/07/04 03:27	linux-5.15.y	4878aadf2d15	f76a75f3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	INFO: rcu detected stall in getpid

Crashes (6):

Assets (help?)