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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: 298d, last: 214d
▶ ▼ 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 Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in do_open_execat (2) missing-backport origin:upstream -1 C done 14 4d16h 739d 0/3 upstream: reported C repro on 2023/10/13 04:40
upstream WARNING in do_open_execat (2) ntfs3 -1 C 18 547d 559d 0/29 auto-obsoleted due to no activity on 2024/06/30 18:49
linux-5.15 WARNING in do_open_execat -1 1 946d 946d 0/3 auto-obsoleted due to no activity on 2023/07/18 02:48
upstream WARNING in do_open_execat ntfs3 -1 C error done 12 635d 794d 25/29 fixed on 2024/03/20 11:33
linux-6.1 WARNING in do_open_execat missing-backport origin:lts-only -1 C inconclusive 15 115d 766d 0/3 upstream: reported C repro on 2023/09/16 02:14
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2025/10/17 09:20 21m retest repro upstream OK log
2025/09/08 01:40 18m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/08/08 09:03 16m retest repro upstream report log
2025/06/29 13:47 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/05/30 08:32 15m retest repro upstream report log
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: 1 PID: 6416 at fs/exec.c:911 do_open_execat+0x340/0x3dc
Modules linked in:
CPU: 1 UID: 0 PID: 6416 Comm: syz-executor191 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : do_open_execat+0x340/0x3dc
lr : do_open_execat+0x33c/0x3dc fs/exec.c:911
sp : ffff8000a37c7b60
x29: ffff8000a37c7bd0 x28: 0000000000000000 x27: ffff0000d9941e6c
x26: 00000000ffffff9c x25: dfff800000000000 x24: ffff7000146f8f6c
x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000009000
x20: fffffffffffffff3 x19: ffff0000d93c76c0 x18: ffff8000a37c7080
x17: 000000000000d9a1 x16: ffff80008b60aec8 x15: 0000000000000002
x14: 1ffff000146f8f34 x13: 0000000000000000 x12: 0000000000000000
x11: ffff7000146f8f36 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d9941e40 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000000 x1 : 0000000000009000 x0 : 0000000000008000
Call trace:
 do_open_execat+0x340/0x3dc (P)
 alloc_bprm+0x44/0x940 fs/exec.c:1505
 do_execveat_common+0x164/0x864 fs/exec.c:1900
 do_execve fs/exec.c:2023 [inline]
 __do_sys_execve fs/exec.c:2099 [inline]
 __se_sys_execve fs/exec.c:2094 [inline]
 __arm64_sys_execve+0x98/0xb0 fs/exec.c:2094
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 1652
hardirqs last  enabled at (1651): [<ffff80008b6cd25c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (1651): [<ffff80008b6cd25c>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (1652): [<ffff80008b6a8d44>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (866): [<ffff800080129934>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (864): [<ffff800080129900>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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 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
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.