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

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Date:   Wed, 21 Jun 2023 09:59:34 -0700
From:   syzbot <syzbot+db6df8c0f578bc11e50e@...kaller.appspotmail.com>
To:     jack@...e.com, jack@...e.cz, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [udf?] WARNING in udf_setsize (2)

syzbot has bisected this issue to:

commit 16d0556568148bdcaa45d077cac9f8f7077cf70a
Author: Jan Kara <jack@...e.cz>
Date:   Wed Dec 7 17:17:34 2022 +0000

    udf: Discard preallocation before extending file with a hole

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17327857280000
start commit:   99ec1ed7c2ed Merge tag '6.4-rc6-smb3-server-fixes' of git:..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14b27857280000
console output: https://syzkaller.appspot.com/x/log.txt?x=10b27857280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e74b395fe4978721
dashboard link: https://syzkaller.appspot.com/bug?extid=db6df8c0f578bc11e50e
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1662e03f280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=141c5260a80000

Reported-by: syzbot+db6df8c0f578bc11e50e@...kaller.appspotmail.com
Fixes: 16d055656814 ("udf: Discard preallocation before extending file with a hole")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection