From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f78.google.com (mail-oo1-f78.google.com [209.85.161.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB7FE3F8EAE for ; Mon, 18 May 2026 11:56:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.78 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779105392; cv=none; b=YsIUW1pHRSF6w5suEeLPU67Ow5tb5Cq1YKzv7NT7n51rMGichA4Oc/4wxBMZeak2g2p5UO/+/+y2VIRlEaaPE4QOzKTe3PVI1RazH6Sya2JiWnRWrIOaQA2QrzV7dlZlgXt+Q5fGeYSXdkr5/iE3t58neN5Ad1sHFAmd68eW/CE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779105392; c=relaxed/simple; bh=Rkaunc0T3NRV1Y0c14b90Jzt953K6gRFy1ROjTtw1v8=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=N/SREYpeqLa0L/XOumzw+Aj8cLowiWYXw7sx3h2clTPtUR/GZVSdIaF8C10XpXQI+HPNIw+AiZ+83Oqh3F/6+V3tM4DRQNVaEeFaKKVIclJc7Th05v8RJ/plqlOmWCIRIcXVo6W8dIS/aG11KttSrqHA8mfZieXVdS+svJcIimE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.78 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f78.google.com with SMTP id 006d021491bc7-69644bda339so3397483eaf.1 for ; Mon, 18 May 2026 04:56:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779105389; x=1779710189; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=MtPEKY3iIVwgecSyrwy1JuY/2jTuaWMQkFEO1YuYLtU=; b=L/noez7rbS+AL+anacw7Jp0ONd1KL9izLtqtbMoESTLTxpe+P/KJ5Jll5nKxRlJA/D 0e2VIC21rw4LAGX4WU49v8T+s9U3nr8J7elzhJQo5FSQUj45CpCas9KfF8aX61+obBj5 GqV76lOUDKLW6pYKh1+99GIQuRsb0NCnBjHk2vebKpf2blBb9vaVLi9t3i3bYARWSkER QBJETTcJGrtcJIUnBF2JpQ3dnLw0YN4JfLzCqZjPryvT5h/Ru21ixII0AcaeQYM95DmC BqVhyK4Bjunz02jeU8+qE76NxhcUl7oD0dSdsILh+a2dcvWU3g6jMM1NWZvne7a+UsBm Qh2g== X-Forwarded-Encrypted: i=1; AFNElJ/98wCSG1lMI0pLW73HcwNJsTHhhEBJ0YoaM0wrQyfVrLwZacsfo6YP5fl5K9FkhnB5atLyGJ6bIogN/tg=@vger.kernel.org X-Gm-Message-State: AOJu0Yw06pV0ZyffudE0SbGUKE8ziu6y+8vxfdyFfwQ1/KeJoKvCqHbw hYopmGBpOlaWSfbyEs/rtLaOajt8gQCFnUxi0F6rz+/BE3HvvkAFwkgDQ0Z6TEKRsmLd8Q7XRcF yo6NXHa4Z6AUwtRvYO4/l0dufobo7S7NpsDSD6+b0sYyhX4td/vmF9dxvyy4= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:de08:0:b0:696:aedf:bd53 with SMTP id 006d021491bc7-69b87d2fb32mr7594900eaf.9.1779105389560; Mon, 18 May 2026 04:56:29 -0700 (PDT) Date: Mon, 18 May 2026 04:56:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a0afe6d.050a0220.3414e3.0000.GAE@google.com> Subject: [syzbot] [udf?] WARNING in udf_open_lvid From: syzbot To: jack@suse.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot found the following issue on: HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-05-16' of https://g.= . git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=3D16738596580000 kernel config: https://syzkaller.appspot.com/x/.config?x=3D7f195f6be48c12e= c dashboard link: https://syzkaller.appspot.com/bug?extid=3D0306b38d9ed6ef714= 67d compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-= 1~exp1~20251221153213.50), Debian LLD 21.1.8 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d90= 0f083ada3/non_bootable_disk-6916d570.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8bed404c07b1/vmlinux-= 6916d570.xz kernel image: https://storage.googleapis.com/syzbot-assets/d4742556e816/bzI= mage-6916d570.xz IMPORTANT: if you fix the issue, please add the following tag to the commit= : Reported-by: syzbot+0306b38d9ed6ef71467d@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'Li=05uxUDF', timestamp 2022/11/22 14:59 (1000= ) loop0: detected capacity change from 2048 to 0 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:1087 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087= , CPU#0: syz.0.0/5328 Modules linked in: CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full= )=20 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16= .3-2 04/01/2014 RIP: 0010:mark_buffer_dirty+0x299/0x410 fs/buffer.c:1087 Code: 4c 89 f7 e8 b9 5c da ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f = 5d e9 b4 63 fb ff e8 bf 90 6d ff eb 8c e8 b8 90 6d ff 90 <0f> 0b 90 e9 a5 f= d ff ff e8 aa 90 6d ff 90 0f 0b 90 e9 cf fd ff ff RSP: 0018:ffffc9000da17b90 EFLAGS: 00010293 RAX: ffffffff82584318 RBX: ffff888047950828 RCX: ffff888012690000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc9000da17c01 R08: ffff88804795082f R09: 1ffff11008f2a105 R10: dffffc0000000000 R11: ffffed1008f2a106 R12: ffff888050a4c009 R13: 1ffff92001b42f80 R14: dffffc0000000000 R15: ffff888047950828 FS: 00007efcfaa656c0(0000) GS:ffff88808c87f000(0000) knlGS:000000000000000= 0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcca852c04 CR3: 0000000012501000 CR4: 0000000000352ef0 Call Trace: udf_open_lvid+0x38a/0x5d0 fs/udf/super.c:2078 udf_reconfigure+0x336/0x540 fs/udf/super.c:679 reconfigure_super+0x227/0x8a0 fs/super.c:1080 do_remount fs/namespace.c:3400 [inline] path_mount+0xdc5/0x10e0 fs/namespace.c:4146 do_mount fs/namespace.c:4167 [inline] __do_sys_mount fs/namespace.c:4383 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4360 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efcf9b9e0ca Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 = 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff f= f 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efcfaa64e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007efcfaa64ea0 RCX: 00007efcf9b9e0ca RDX: 0000200000000180 RSI: 0000200000000100 RDI: 0000000000000000 RBP: 0000200000000180 R08: 00007efcfaa64ea0 R09: 0000000001e4047c R10: 0000000001e4047c R11: 0000000000000246 R12: 0000200000000100 R13: 00007efcfaa64e60 R14: 0000000000000000 R15: 0000200000000ec0 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup