syzbot
WARNING in perf_event_throttle_group
Status:
auto-obsoleted due to no activity on 2026/10/04 03:24
Subsystems:
perf
Labels:
prio:high
[Documentation on labels]
Reported-by: syzbot+a945e9d15c8a49a7a7f0@syzkaller.appspotmail.com
First crash: 334d, last: 217d
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Last patch testing requests (10)
| Created |
Duration |
User |
Patch |
Repo |
Result |
| 2026/10/04 02:55 |
28m
|
retest repro
|
|
bpf-next |
no crash
job log
log
|
| 2026/07/24 11:16 |
35m
|
retest repro
|
|
bpf-next |
error
|
| 2026/05/15 11:03 |
32m
|
retest repro
|
|
bpf-next |
no crash
log
|
| 2026/05/15 10:28 |
23m
|
retest repro
|
|
bpf-next |
error
|
| 2026/04/22 12:03 |
31m
|
retest repro
|
|
bpf-next |
no crash
log
|
| 2026/04/22 10:04 |
1h15m
|
retest repro
|
|
bpf-next |
no crash
log
|
| 2026/04/12 11:43 |
44m
|
retest repro
|
|
bpf |
no crash
log
|
| 2026/04/12 11:20 |
24m
|
retest repro
|
|
bpf |
no crash
log
|
| 2026/03/20 17:18 |
25m
|
retest repro
|
|
bpf |
no crash
log
|
| 2026/03/20 17:18 |
29m
|
retest repro
|
|
bpf |
no crash
log
|
Sample crash report:
------------[ cut here ]------------
WARNING: kernel/events/core.c:2701 at perf_event_throttle_group+0x375/0x3d0 kernel/events/core.c:2701, CPU#1: syz.2.11021/15708
Modules linked in:
CPU: 1 UID: 0 PID: 15708 Comm: syz.2.11021 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:perf_event_throttle_group+0x375/0x3d0 kernel/events/core.c:2701
Code: c7 32 00 e9 ec fe ff ff e8 e8 6a cc ff eb 05 e8 e1 6a cc ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 cc 6a cc ff 90 <0f> 0b 90 e9 54 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c c9
RSP: 0018:ffffc9000449f490 EFLAGS: 00010287
RAX: ffffffff81f54784 RBX: ffff8880977a4518 RCX: 0000000000080000
RDX: ffffc90011448000 RSI: 0000000000001c26 RDI: 0000000000001c27
RBP: 0000000000000000 R08: ffffc9000449f137 R09: 0000000000000000
R10: ffffc9000449f120 R11: fffff52000893e27 R12: ffff8880977a4738
R13: dffffc0000000000 R14: ffff8880977a4758 R15: ffffffff8dff9598
FS: 00007f59dfae16c0(0000) GS:ffff888125f35000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c28598a CR3: 0000000058bc2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<TASK>
__perf_event_account_interrupt+0x23c/0x250 kernel/events/core.c:10249
__perf_event_overflow+0x105/0xe70 kernel/events/core.c:10396
perf_swevent_overflow kernel/events/core.c:10536 [inline]
perf_swevent_event+0x530/0x5e0 kernel/events/core.c:10574
perf_tp_event+0x4f6/0x1380 kernel/events/core.c:11081
perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:11005
do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline]
perf_trace_lock_acquire+0x335/0x410 include/trace/events/lock.h:24
__do_trace_lock_acquire include/trace/events/lock.h:24 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x2fb/0x340 kernel/locking/lockdep.c:5831
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:867 [inline]
class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
futex_hash+0x5d/0x2d0 kernel/futex/core.c:308
class_hb_constructor kernel/futex/futex.h:240 [inline]
futex_wake+0x161/0x560 kernel/futex/waitwake.c:172
do_futex+0x395/0x420 kernel/futex/syscalls.c:135
__do_sys_futex kernel/futex/syscalls.c:207 [inline]
__se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:188
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59deb8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f59dfae10e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f59dede5fa8 RCX: 00007f59deb8f749
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f59dede5fac
RBP: 00007f59dede5fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59dede6038 R14: 00007ffc1870cf30 R15: 00007ffc1870d018
</TASK>
Struck through repros no longer work on HEAD.