syzbot


invalid opcode in __traceiter_sys_enter

Status: upstream: reported C repro on 2025/05/10 13:09
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+dd8a2b9a8181157e1cc0@syzkaller.appspotmail.com
First crash: 3d04h, last: 3d01h
Bug presence (2)
Date Name Commit Repro Result
2025/05/13 lts (merge base) 420102835862 C [report] invalid opcode in __traceiter_sys_enter
2025/05/13 upstream (ToT) 627277ba7c23 C [report] invalid opcode in __traceiter_sys_enter

Sample crash report:
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: 84 Comm: syslogd Not tainted 6.1.134-syzkaller-00012-g646380b087a5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__traceiter_sys_enter+0x34/0x50 include/trace/events/syscalls.h:18
Code: 8b 3d 60 a2 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:ffffc900009b7ea8 EFLAGS: 00010a17

RAX: ffffffff81710320 RBX: 0000000000000000 RCX: ffff88810f0d5100
RDX: 0000000000000000 RSI: ffffc900009b7f58 RDI: ffffc900000dd000
RBP: ffffc900009b7ec0 R08: dffffc0000000000 R09: ffffed1021cd443f
R10: 000000005cc8e400 R11: 1ffff11021cd443e R12: ffff88810f0d5100
R13: 0000000000000000 R14: ffffc900009b7f58 R15: ffff88810999f8a8
FS:  00007f616711fc80(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557fa8503848 CR3: 00000001100cb000 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: 0033:0x7f616726f407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffebc3d1880 EFLAGS: 00000202
 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f616711fc80 RCX: 00007f616726f407
RDX: 00000000000000ff RSI: 0000555e648f1300 RDI: 0000000000000000
RBP: 0000555e648f12c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000555e648f134c
R13: 0000000000000000 R14: 0000555e648f1300 R15: 0000555e60a45d98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__traceiter_sys_enter+0x34/0x50 include/trace/events/syscalls.h:18
Code: 8b 3d 60 a2 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:ffffc900009b7ea8 EFLAGS: 00010a17

RAX: ffffffff81710320 RBX: 0000000000000000 RCX: ffff88810f0d5100
RDX: 0000000000000000 RSI: ffffc900009b7f58 RDI: ffffc900000dd000
RBP: ffffc900009b7ec0 R08: dffffc0000000000 R09: ffffed1021cd443f
R10: 000000005cc8e400 R11: 1ffff11021cd443e R12: ffff88810f0d5100
R13: 0000000000000000 R14: ffffc900009b7f58 R15: ffff88810999f8a8
FS:  00007f616711fc80(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557fa8503848 CR3: 00000001100cb000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/10 14:39 android14-6.1 646380b087a5 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 invalid opcode in __traceiter_sys_enter
2025/05/10 13:48 android14-6.1 646380b087a5 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 invalid opcode in __traceiter_sys_enter
2025/05/10 12:58 android14-6.1 646380b087a5 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 invalid opcode in __traceiter_sys_enter
2025/05/10 12:08 android14-6.1 646380b087a5 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 invalid opcode in __traceiter_sys_enter
* Struck through repros no longer work on HEAD.