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Internal error in do_execveat_common

Status: upstream: reported C repro on 2025/08/08 15:10
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+902e79d85c3f8b2cad0b@syzkaller.appspotmail.com
First crash: 116d, last: 40d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/08/13 linux-5.15.y (ToT) c79648372d02 C [report] Internal error in do_execveat_common
2025/08/13 upstream (ToT) 8742b2d8935f C Didn't crash
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/10/23 08:53 18m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/08/15 15:36 1m fix candidate upstream error job log

Sample crash report:
process 'syz.0.17' launched './file0' with NULL argv: empty string added
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4230 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : get_user_arg_ptr+0x104/0x2ec fs/exec.c:418
lr : get_user_arg_ptr+0xe0/0x2ec fs/exec.c:418
sp : ffff80001fe97c60
x29: ffff80001fe97c60 x28: ffff0000e89b3c00 x27: ffff0000cf1b9b40
x26: 1fffe0001d13678b x25: 00000000ffffff9c x24: dfff800000000000
x23: 0000000000400040 x22: dfff800000000000 x21: 000000200022c000
x20: 00000000fffffff2 x19: 0000000000000000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000088f8748 x15: 00000000ffffffff
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 00000000200022c0 x9 : 0000ffffffffffff
x8 : 00000000200022c0 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 get_user_arg_ptr+0x104/0x2ec fs/exec.c:418
 count fs/exec.c:433 [inline]
 do_execveat_common+0x2cc/0x7dc fs/exec.c:1922
 do_execve fs/exec.c:2027 [inline]
 __do_sys_execve fs/exec.c:2103 [inline]
 __se_sys_execve fs/exec.c:2098 [inline]
 __arm64_sys_execve+0x98/0xb0 fs/exec.c:2098
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d503229f 2a1f03f4 2a1f03e0 f8400953 (2a1403e1) 
---[ end trace e94bf4ac06e06b70 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f4 	mov	w20, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	f8400953 	ldtr	x19, [x10]
* 10:	2a1403e1 	mov	w1, w20 <-- trapping instruction

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/10 20:42 linux-5.15.y c79648372d02 32a0e5ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/25 20:52 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/25 20:50 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/25 20:50 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/25 13:33 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/25 13:31 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/23 07:15 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/23 07:14 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/17 12:45 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/17 12:45 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/12 10:47 linux-5.15.y c79648372d02 c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/12 10:46 linux-5.15.y c79648372d02 c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/09 12:56 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/09 10:50 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/09 10:48 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/09 07:42 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/09 05:36 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/08 21:53 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/08 21:51 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/08 15:12 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
2025/08/08 15:10 linux-5.15.y c79648372d02 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 Internal error in do_execveat_common
* Struck through repros no longer work on HEAD.