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WARNING in do_open_execat (3)

Status: upstream: reported C repro on 2024/12/31 06:22
Subsystems: squashfs
[Documentation on labels]
Reported-by: syzbot+a6bec34b1270dec555f4@syzkaller.appspotmail.com
First crash: 141d, last: 56d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [squashfs?] WARNING in do_open_execat (3) 0 (1) 2024/12/31 06:22
▶ ▼ Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in do_open_execat (2) origin:upstream missing-backport C done 13 35d 582d 0/3 upstream: reported C repro on 2023/10/13 04:40
upstream WARNING in do_open_execat (2) ntfs3 C 18 390d 402d 0/28 auto-obsoleted due to no activity on 2024/06/30 18:49
linux-5.15 WARNING in do_open_execat 1 789d 789d 0/3 auto-obsoleted due to no activity on 2023/07/18 02:48
upstream WARNING in do_open_execat ntfs3 C error done 12 477d 637d 25/28 fixed on 2024/03/20 11:33
linux-6.1 WARNING in do_open_execat origin:upstream missing-backport C inconclusive 14 105d 609d 0/3 upstream: reported C repro on 2023/09/16 02:14
▶ ▼ Last patch testing requests (4)
Created Duration User Patch Repo Result
2025/04/20 10:36 18m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/03/21 08:15 16m retest repro upstream report log
2025/02/09 09:42 21m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/01/10 07:57 14m retest repro upstream report log

Sample crash report:
loop0: detected capacity change from 0 to 8
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5309 at fs/exec.c:911 do_open_execat+0x376/0x480 fs/exec.c:911
Modules linked in:
CPU: 0 UID: 0 PID: 5309 Comm: syz-executor209 Not tainted 6.13.0-rc4-syzkaller-00054-gd6ef8b40d075 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:do_open_execat+0x376/0x480 fs/exec.c:911
Code: 74 3e 49 81 ff 01 f0 ff ff 73 35 e8 74 af 86 ff 4c 89 ff e8 cc 89 fe ff eb 2b e8 65 af 86 ff e9 05 fe ff ff e8 5b af 86 ff 90 <0f> 0b 90 eb c7 e8 50 af 86 ff 48 c7 c3 e6 ff ff ff 4d 85 ff 75 c2
RSP: 0018:ffffc9000d007d00 EFLAGS: 00010293
RAX: ffffffff8218c4d5 RBX: 000000000000e000 RCX: ffff88801cfba440
RDX: 0000000000000000 RSI: 000000000000e000 RDI: 0000000000008000
RBP: ffffc9000d007dc8 R08: ffffffff8218c336 R09: 0000000000000000
R10: ffffc9000d007b60 R11: fffff52001a00f6e R12: ffffc9000d007d40
R13: 1ffff92001a00fa4 R14: ffff8880475a4578 R15: ffff88803fa8e000
FS:  0000555571145380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7c8c00000 CR3: 0000000043846000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 alloc_bprm+0x28/0xa30 fs/exec.c:1505
 do_execveat_common+0x18c/0x6f0 fs/exec.c:1900
 do_execveat fs/exec.c:2034 [inline]
 __do_sys_execveat fs/exec.c:2108 [inline]
 __se_sys_execveat fs/exec.c:2102 [inline]
 __x64_sys_execveat+0xc4/0xe0 fs/exec.c:2102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff7d11e1639
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff49e02ef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007ff7d11e1639
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 00000000ffffff9c
RBP: 00007ff7d1254610 R08: 0000000000001000 R09: 00007fff49e030c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff49e030b8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/27 07:51 upstream d6ef8b40d075 d3ccff63 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in do_open_execat
2025/01/18 15:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 1950a0af2d55 f2cb035c .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in do_open_execat
2025/01/26 04:48 upstream 405057718a1f 9fbd772e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_open_execat
2025/01/21 06:25 upstream 3d3a9c8b89d4 6e87cfa2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_open_execat
2024/12/27 06:13 upstream d6ef8b40d075 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in do_open_execat
* Struck through repros no longer work on HEAD.