linux-kernel - Re: [syzbot] KASAN: use-after-free Read in hdr_find

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Date:   Wed, 28 Sep 2022 20:19:23 -0700
From:   syzbot <syzbot+c986d2a447ac6fb27b02@...kaller.appspotmail.com>
To:     almaz.alexandrovich@...agon-software.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        ntfs3@...ts.linux.dev, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk
Subject: Re: [syzbot] KASAN: use-after-free Read in hdr_find_e

syzbot has bisected this issue to:

commit 6e5be40d32fb1907285277c02e74493ed43d77fe
Author: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Date:   Fri Aug 13 14:21:30 2021 +0000

    fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=162d662f080000
start commit:   3800a713b607 Merge tag 'mm-hotfixes-stable-2022-09-26' of ..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=152d662f080000
console output: https://syzkaller.appspot.com/x/log.txt?x=112d662f080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ba0d23aa7e1ffaf5
dashboard link: https://syzkaller.appspot.com/bug?extid=c986d2a447ac6fb27b02
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17ffc374880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=102db9ff080000

Reported-by: syzbot+c986d2a447ac6fb27b02@...kaller.appspotmail.com
Fixes: 6e5be40d32fb ("fs/ntfs3: Add NTFS3 in fs/Kconfig and fs/Makefile")

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