linux-kernel - Re: [syzbot] [ntfs3?] BUG: unable to handle kernel NULL pointer dereference in hdr_find

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Message-ID: <0000000000008c9d5106042d2abb@google.com>
Date:   Wed, 30 Aug 2023 17:31:34 -0700
From:   syzbot <syzbot+60cf892fc31d1f4358fc@...kaller.appspotmail.com>
To:     almaz.alexandrovich@...agon-software.com, astrajoan@...oo.com,
        ivan.orlov0322@...il.com, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, ntfs3@...ts.linux.dev,
        skhan@...uxfoundation.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] BUG: unable to handle kernel NULL pointer
 dereference in hdr_find_e (2)

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=151f20a8680000
start commit:   4b954598a47b Merge tag 'exfat-for-6.5-rc5' of git://git.ke..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=171f20a8680000
console output: https://syzkaller.appspot.com/x/log.txt?x=131f20a8680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1e3d5175079af5a4
dashboard link: https://syzkaller.appspot.com/bug?extid=60cf892fc31d1f4358fc
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11ee0aa6a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=100eaedea80000

Reported-by: syzbot+60cf892fc31d1f4358fc@...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