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: 440d, last: 48m
▶ ▼ 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 (54222):
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
2026/09/04 03:23 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/04 02:17 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/04 01:14 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/04 00:38 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 22:11 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 21:01 android16-6.12 1eab233d5fae 801f0966 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 20:18 android16-6.12 1eab233d5fae 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 19:03 android16-6.12 1eab233d5fae 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 17:50 android16-6.12 1eab233d5fae 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 17:44 android16-6.12 1eab233d5fae 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 15:55 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 14:08 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 12:57 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 12:40 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 10:41 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 09:12 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 08:09 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 06:33 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 04:13 android16-6.12 8473ff8a565c 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 02:03 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/03 00:34 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 22:21 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 20:41 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 19:10 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 17:51 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 17:49 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 16:19 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 16:02 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 15:55 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 15:47 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 15:47 android16-6.12 58b61a547e48 85995287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 11:38 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 10:31 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 08:07 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 06:47 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 05:25 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 04:29 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 03:24 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 01:08 android16-6.12 97fb1ec747d3 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/02 00:02 android16-6.12 77b3c87e00dc 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/01 22:45 android16-6.12 77b3c87e00dc 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/09/01 21:44 android16-6.12 77b3c87e00dc 587f6b29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/08/29 04:04 android16-6.12 36bee94a7cf9 2f52988a .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.