WARNING in rcu_check_gp_start

Date	Name	Commit	Repro	Result
2023/09/17	upstream (ToT)	e789286468a9	C	[report] INFO: rcu detected stall in corrupted

Date

Name

Commit

Repro

Result

2023/09/17

upstream (ToT)

e789286468a9

[report] INFO: rcu detected stall in corrupted

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in rcu_check_gp_start_stall net	C	done	error	259	43m	1897d	0/26	upstream: reported C repro on 2019/02/22 17:10
linux-5.15	WARNING in rcu_check_gp_start_stall (2)				1	8d21h	8d21h	0/3	upstream: reported on 2024/04/24 21:58
linux-5.15	WARNING in rcu_check_gp_start_stall				1	147d	147d	0/3	auto-obsoleted due to no activity on 2024/03/17 09:39

upstream

WARNING in rcu_check_gp_start_stall net

done

error

259

43m

1897d

0/26

upstream: reported C repro on 2019/02/22 17:10

linux-5.15

WARNING in rcu_check_gp_start_stall (2)

8d21h

0/3

upstream: reported on 2024/04/24 21:58

linux-5.15

WARNING in rcu_check_gp_start_stall

147d

0/3

auto-obsoleted due to no activity on 2024/03/17 09:39


Created	Duration	User	Repo	Result
2024/04/23 22:22	2h31m	bisect fix	linux-6.1.y	job log (0) log
2024/03/23 19:09	2h03m	bisect fix	linux-6.1.y	job log (0) log
2024/02/22 09:50	1h52m	bisect fix	linux-6.1.y	job log (0) log
2023/12/26 09:17	2h07m	bisect fix	linux-6.1.y	job log (0) log
2023/11/25 10:46	2h03m	bisect fix	linux-6.1.y	job log (0) log
2023/10/22 07:20	2h06m	bisect fix	linux-6.1.y	job log (0) log

------------[ cut here ]------------ WARNING: CPU: 1 PID: 3585 at kernel/rcu/tree_stall.h:953 rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:938 Modules linked in: CPU: 1 PID: 3585 Comm: syz-executor152 Not tainted 6.1.53-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:rcu_check_gp_start_stall+0x2c8/0x450 kernel/rcu/tree_stall.h:953 Code: c7 c7 40 bf cd 91 be 04 00 00 00 e8 02 1e 6d 00 b8 01 00 00 00 87 05 67 25 5a 10 85 c0 0f 85 1c ff ff ff 48 c7 c0 40 ee 12 8d <0f> 0b 49 39 c7 74 47 48 c7 c0 24 e8 73 8e 48 c1 e8 03 42 0f b6 04 RSP: 0018:ffffc900001e0bb8 EFLAGS: 00010046 RAX: ffffffff8d12ee40 RBX: 0000000100003d9a RCX: ffffffff817399ce RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff91cdbf40 RBP: ffffc900001e0df0 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8880b993ad60 R14: 0000000000000246 R15: ffffffff8d12ee40 FS: 00007ff9440536c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff944032d58 CR3: 0000000021843000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> rcu_core+0x67f/0x1790 kernel/rcu/tree.c:2506 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:finish_lock_switch+0x91/0x100 kernel/sched/core.c:5001 Code: 45 31 c9 68 97 43 60 81 e8 ac b1 09 00 48 83 c4 08 4c 89 ff e8 c0 cc fe ff 66 90 4c 89 ff e8 06 a9 2f 09 e8 a1 89 30 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87 RSP: 0018:ffffc90003bdf298 EFLAGS: 00000286 RAX: b844a98fb0107800 RBX: ffff888023871df4 RCX: ffffffff91c97103 RDX: dffffc0000000000 RSI: ffffffff8aebe2a0 RDI: ffffffff8b3ceb80 RBP: ffffc90003bdf310 R08: dffffc0000000000 R09: ffffed10173273c1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff1101732756b R14: ffff8880b993ab58 R15: ffff8880b9939e00 finish_task_switch+0x134/0x630 kernel/sched/core.c:5118 context_switch kernel/sched/core.c:5244 [inline] __schedule+0x1334/0x4330 kernel/sched/core.c:6554 schedule+0xbf/0x180 kernel/sched/core.c:6630 schedule_timeout+0xac/0x300 kernel/time/timer.c:1911 unix_wait_for_peer+0x24b/0x330 net/unix/af_unix.c:1449 unix_dgram_sendmsg+0x1348/0x2050 net/unix/af_unix.c:2047 sock_sendmsg_nosec net/socket.c:716 [inline] sock_sendmsg net/socket.c:736 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmmsg+0x3ab/0x730 net/socket.c:2622 __do_sys_sendmmsg net/socket.c:2651 [inline] __se_sys_sendmmsg net/socket.c:2648 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2648 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff944092599 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff944053228 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007ff9440536c0 RCX: 00007ff944092599 RDX: 0000000000000318 RSI: 00000000200bd000 RDI: 0000000000000004 RBP: 00007ff94411c328 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff94411c320 R13: 00007ff9440e9064 R14: 00007fff1f08b9f0 R15: 00007fff1f08bad8 </TASK> ---------------- Code disassembly (best guess): 0: 45 31 c9 xor %r9d,%r9d 3: 68 97 43 60 81 push $0xffffffff81604397 8: e8 ac b1 09 00 call 0x9b1b9 d: 48 83 c4 08 add $0x8,%rsp 11: 4c 89 ff mov %r15,%rdi 14: e8 c0 cc fe ff call 0xfffeccd9 19: 66 90 xchg %ax,%ax 1b: 4c 89 ff mov %r15,%rdi 1e: e8 06 a9 2f 09 call 0x92fa929 23: e8 a1 89 30 00 call 0x3089c9 28: fb sti 29: 5b pop %rbx * 2a: 41 5c pop %r12 <-- trapping instruction 2c: 41 5d pop %r13 2e: 41 5e pop %r14 30: 41 5f pop %r15 32: c3 ret 33: 44 89 f1 mov %r14d,%ecx 36: 80 e1 07 and $0x7,%cl 39: 80 c1 03 add $0x3,%cl 3c: 38 c1 cmp %al,%cl 3e: 7c 87 jl 0xffffffc7

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/09/17 20:24	linux-6.1.y	09045dae0d90	0b6a67ac	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	WARNING in rcu_check_gp_start_stall
2024/01/12 19:37	linux-6.1.y	7c58bfa711cb	551587c1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan	WARNING in rcu_check_gp_start_stall

Crashes (2):

Assets (help?)