linux-kernel - [syzbot] [udf?] WARNING in udf

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Message-ID: <00000000000073c14105fdf2c0f0@google.com>
Date:   Mon, 12 Jun 2023 11:18:56 -0700
From:   syzbot <syzbot+db6df8c0f578bc11e50e@...kaller.appspotmail.com>
To:     jack@...e.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [udf?] WARNING in udf_setsize (2)

Hello,

syzbot found the following issue on:

HEAD commit:    5f63595ebd82 Merge tag 'input-for-v6.4-rc5' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1667baf1280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7474de833c217bf4
dashboard link: https://syzkaller.appspot.com/bug?extid=db6df8c0f578bc11e50e
compiler:       Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d12b9e46ffe8/disk-5f63595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c9044ded7edd/vmlinux-5f63595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/09f0fd3926e8/bzImage-5f63595e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+db6df8c0f578bc11e50e@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8731 at fs/udf/inode.c:673 udf_setsize+0x1092/0x1480 fs/udf/inode.c:1275
Modules linked in:
CPU: 1 PID: 8731 Comm: syz-executor.4 Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:udf_extend_file fs/udf/inode.c:672 [inline]
RIP: 0010:udf_setsize+0x1092/0x1480 fs/udf/inode.c:1275
Code: 00 00 00 00 fc ff df 74 0a e8 4a fc 8c fe e9 18 ff ff ff 4c 89 64 24 20 e8 3b fc 8c fe 4c 89 fb e9 a7 fd ff ff e8 2e fc 8c fe <0f> 0b e9 1b f6 ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 2b f0 ff ff 4c
RSP: 0018:ffffc90004fcfae0 EFLAGS: 00010293
RAX: ffffffff82fe8302 RBX: 0000000000000800 RCX: ffff888035f93b80
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000800
RBP: ffffc90004fcfcd0 R08: ffffffff82fe7900 R09: ffffed100ea45358
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920009f9f70
R13: 0000000000000751 R14: 0000000000000009 R15: 0000000000001000
FS:  00007f3365a37700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 00000000797b8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_setattr+0x370/0x540 fs/udf/file.c:239
 notify_change+0xc8b/0xf40 fs/attr.c:483
 do_truncate+0x220/0x300 fs/open.c:66
 do_sys_ftruncate+0x2e4/0x380 fs/open.c:194
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3364c8c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3365a37168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f3364dac120 RCX: 00007f3364c8c169
RDX: 0000000000000000 RSI: 0000000000000751 RDI: 0000000000000004
RBP: 00007f3364ce7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6db1fcaf R14: 00007f3365a37300 R15: 0000000000022000
 </TASK>


---
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