syzbot


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: 225d, last: 30m
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: 371 at fs/overlayfs/util.c:602 ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
WARNING: CPU: 0 PID: 371 at fs/overlayfs/util.c:602 ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Modules linked in:
CPU: 0 UID: 0 PID: 371 Comm: syz-executor Not tainted syzkaller #0 8900111b7fef672e0561e32e4ed045c7fbde3c06
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:ovl_dir_version_inc fs/overlayfs/util.c:602 [inline]
RIP: 0010:ovl_dir_modified+0x15a/0x190 fs/overlayfs/util.c:620
Code: c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 5e 8b 97 ff 49 ff 06 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 86 c4 3f ff <0f> 0b e9 3e ff ff ff e8 7a c4 3f ff 0f 0b e9 6e ff ff ff 44 89 f9
RSP: 0018:ffffc90001bdfb48 EFLAGS: 00010293
RAX: ffffffff8247d88a RBX: 0000000000000000 RCX: ffff888113989300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001bdfb70 R08: ffff88811dbcddbf R09: 1ffff11023b79bb7
R10: dffffc0000000000 R11: ffffed1023b79bb8 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88811dbcdd20 R15: ffff8881231b8ee0
FS:  000055558c9da500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000124288000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 ovl_remove_upper fs/overlayfs/dir.c:841 [inline]
 ovl_do_remove+0x81b/0xda0 fs/overlayfs/dir.c:912


Crashes (15934):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
2026/01/31 20:18 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 19:10 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 17:49 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 16:24 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 16:13 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 14:47 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 13:12 android16-6.12 c13babfee861 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 12:05 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 11:04 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 10:09 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 08:58 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 07:42 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 07:17 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 06:15 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 05:04 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 04:29 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 02:51 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 01:45 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 00:19 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/31 00:17 android16-6.12 c13babfee861 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 22:31 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 21:13 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 20:03 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 18:59 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 17:46 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 16:00 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 15:15 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 13:30 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 11:42 android16-6.12 d60ccb82b419 ae7dc18c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 10:16 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 09:29 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 08:19 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 07:34 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 05:53 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 05:12 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 04:05 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 02:28 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/30 01:17 android16-6.12 d60ccb82b419 bfa73b7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 23:00 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 21:56 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 21:27 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 20:26 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 20:05 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 19:01 android16-6.12 6acc5550e55c aeb6fdd5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in ovl_dir_modified
2026/01/29 17:35 android16-6.12 6acc5550e55c aeb6fdd5 .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.