syzbot
invalid opcode in __traceiter_sys_enter
Status:
upstream: reported C repro on 2025/05/10 13:09
Bug presence:
origin:upstream
Labels:
missing-backport
[Documentation on labels]
Reported-by: syzbot+dd8a2b9a8181157e1cc0@syzkaller.appspotmail.com
First crash: 440d, last: 74d
▶
▼
Last patch testing requests (7)
▶
▼
Fix bisection attempts (3)
Sample crash report:
RSP: 002b:00007fff7f25e158 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007fc47a3e5fa0 RCX: 00007fc47a18f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fff7f25e1b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fc47a3e5fa0 R14: 00007fc47a3e5fa0 R15: 0000000000000001
</TASK>
CFI failure at __traceiter_sys_enter+0x34/0x50 include/trace/events/syscalls.h:18 (target: tp_stub_func+0x0/0x10; expected type: 0x4877830c)
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 431 Comm: syz.5.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__traceiter_sys_enter+0x34/0x50 include/trace/events/syscalls.h:18
Code: 8b 3d c0 b1 10 06 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba f4 7c 88 b7 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc90000e07ea8 EFLAGS: 00010a17
RAX: ffffffff81714650 RBX: 0000000000000000 RCX: ffff888117f00000
RDX: 0000000000000000 RSI: ffffc90000e07f58 RDI: ffffc90000805000
RBP: ffffc90000e07ec0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000005cc8e400 R11: 0000000000000000 R12: ffff888117f00000
R13: 0000000000000000 R14: ffffc90000e07f58 R15: ffff8881160cf2a8
FS: 0000555595153500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c007017000 CR3: 0000000117c56000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
trace_sys_enter+0x3d/0x50 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf3/0x150 kernel/entry/common.c:81
__syscall_enter_from_user_work kernel/entry/common.c:100 [inline]
syscall_enter_from_user_mode+0x1f/0x30 kernel/entry/common.c:118
do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:77
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc47a18e11d
Code: a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb bd e8 a8 48 00 00 0f 1f 84 00 00 00 00 00 80 3d 41 d4 22 00 00 74 17 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 5b c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec
RSP: 002b:00007fff7f25e178 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fc47a3e5fa0 RCX: 00007fc47a18e11d
RDX: 000000000000000f RSI: 00007fff7f25e1c0 RDI: 0000000000000005
RBP: 00007fff7f25e1b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fc47a3e5fa0 R14: 00007fc47a3e5fa0 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_sys_enter+0x34/0x50 include/trace/events/syscalls.h:18
Code: 8b 3d c0 b1 10 06 4d 85 ff 74 2e 48 89 d3 49 89 f6 49 8b 07 49 8b 7f 08 4c 89 f6 48 89 da 41 ba f4 7c 88 b7 44 03 50 fc 74 02 <0f> 0b ff d0 49 83 7f 18 00 4d 8d 7f 18 75 d8 31 c0 5b 41 5e 41 5f
RSP: 0018:ffffc90000e07ea8 EFLAGS: 00010a17
RAX: ffffffff81714650 RBX: 0000000000000000 RCX: ffff888117f00000
RDX: 0000000000000000 RSI: ffffc90000e07f58 RDI: ffffc90000805000
RBP: ffffc90000e07ec0 R08: 0000000000000000 R09: 0000000000000000
R10: 000000005cc8e400 R11: 0000000000000000 R12: ffff888117f00000
R13: 0000000000000000 R14: ffffc90000e07f58 R15: ffff8881160cf2a8
FS: 0000555595153500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c007017000 CR3: 0000000117c56000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
* Struck through repros no longer work on HEAD.