WARNING in ovl_dir_modified

Status: premoderation: reported C repro on 2025/06/20 18:31
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+5bbd3a226f17c06c21f8@syzkaller.appspotmail.com
First crash: 413d, last: 6h39m
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2025/06/29 android16-6.12 (ToT) 68f4f0b0690a C [report] WARNING in ovl_dir_modified
2025/06/29 lts (merge base) e0e2f7824338 C Didn't crash
2025/06/29 upstream (ToT) afa9a6f4f574 C Didn't crash
▶ ▼ Last patch testing requests (6)
Created Duration User Patch Repo Result
2025/12/02 18:36 4m retest repro android16-6.12 error
2025/12/02 09:13 3m retest repro android16-6.12 error
2025/12/02 09:13 10m retest repro android16-6.12 error
2025/12/02 09:13 11m retest repro android16-6.12 error
2025/12/02 09:13 3m retest repro android16-6.12 error
2025/12/02 09:13 12m retest repro android16-6.12 error

Sample crash report:
veth0_vlan: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 378 at fs/overlayfs/util.c:605 ovl_dir_version_inc fs/overlayfs/util.c:605 [inline]
WARNING: CPU: 0 PID: 378 at fs/overlayfs/util.c:605 ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:623
Modules linked in:
CPU: 0 UID: 0 PID: 378 Comm: syz-executor Not tainted syzkaller #0 3a44bb4c5afb37201027c4f56c4312533634f50d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ovl_dir_version_inc fs/overlayfs/util.c:605 [inline]
RIP: 0010:ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:623
Code: c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 fe 85 97 ff 49 ff 06 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 86 d2 3e ff <0f> 0b e9 3e ff ff ff e8 7a d2 3e ff 0f 0b e9 6e ff ff ff 44 89 f9
RSP: 0018:ffffc9000125fb88 EFLAGS: 00010293
RAX: ffffffff82489d4a RBX: 0000000000000000 RCX: ffff88812f728000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000125fbb0 R08: ffff8881228c0f3f R09: 1ffff110245181e7
R10: dffffc0000000000 R11: ffffed10245181e8 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881228c0ea0 R15: ffff888113379550
FS:  0000555576377500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555576392918 CR3: 0000000114610000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 ovl_remove_upper fs/overlayfs/dir.c:841 [inline]
 ovl_do_remove+0x824/0xd10 fs/overlayfs/dir.c:912
 ovl_rmdir+0x1e/0x30 fs/overlayfs/dir.c:945
 vfs_rmdir+0x3de/0x560 fs/namei.c:4348

Crashes (51763):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/06 06:26 android16-6.12 26ae30f2807e fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/05/27 04:03 android16-6.12 ad34d1539656 2b01f00e .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/02/16 03:20 android16-6.12 837ec018b485 1e62d198 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/02/10 06:30 android16-6.12 3b54985e1263 4ab09a02 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/02/10 05:37 android16-6.12 3b54985e1263 4ab09a02 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/02/10 04:43 android16-6.12 3b54985e1263 4ab09a02 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/02/10 03:52 android16-6.12 3b54985e1263 4ab09a02 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 17:09 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/10/21 16:32 android16-6.12 0d6730ee6542 9832ed61 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/09/16 17:33 android16-6.12 ef71e857711e e2beed91 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/07/17 06:38 android16-6.12 3bff0858a069 44f8051e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/07/07 03:31 android16-6.12 e2bf362ee23b 4f67c4ae .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/06/20 21:09 android16-6.12 6c1c18fcb8b7 804b3919 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2025/06/20 19:57 android16-6.12 6c1c18fcb8b7 804b3919 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/08 03:53 android16-6.12 b54741372957 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/08 01:58 android16-6.12 b54741372957 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/08 00:01 android16-6.12 b54741372957 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 22:05 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 20:44 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 19:04 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 17:59 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 16:10 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 15:17 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 11:25 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 10:20 android16-6.12 282da3f968e5 e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 09:22 android16-6.12 282da3f968e5 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 08:15 android16-6.12 282da3f968e5 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 06:57 android16-6.12 282da3f968e5 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 06:57 android16-6.12 282da3f968e5 c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 05:40 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 04:32 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 03:30 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 02:46 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/07 01:27 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 23:59 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 22:56 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 22:28 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 21:26 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 20:25 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 18:42 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 17:37 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 16:36 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 15:55 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 14:36 android16-6.12 749a6f9d41aa c38879ea .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 13:34 android16-6.12 749a6f9d41aa cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 12:23 android16-6.12 749a6f9d41aa cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 11:29 android16-6.12 749a6f9d41aa cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 10:15 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 08:40 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 08:31 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 07:26 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 06:09 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 05:08 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 04:01 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 04:00 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 02:50 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/06 01:36 android16-6.12 1d5d2bee38d2 cd5b1963 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/01 02:49 android16-6.12 1a138e24e292 e611ffe1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
* Struck through repros no longer work on HEAD.