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

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Date:   Thu, 26 Oct 2023 22:11:04 -0700
From:   syzbot <syzbot+9d014e6e0df70d97c103@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org,
        almaz.alexandrovich@...agon-software.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, n.zhandarovich@...tech.ru,
        ntfs3@...ts.linux.dev, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] BUG: unable to handle kernel NULL pointer
 dereference in unlock_page (2)

syzbot suspects this issue was fixed by commit:

commit 013ff63b649475f0ee134e2c8d0c8e65284ede50
Author: Konstantin Komarov <almaz.alexandrovich@...agon-software.com>
Date:   Fri Jun 30 12:17:02 2023 +0000

    fs/ntfs3: Add more attributes checks in mi_enum_attr()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10677ddb680000
start commit:   18940c888c85 Merge tag 'sched_urgent_for_v6.3_rc4' of git:..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=acdb62bf488a8fe5
dashboard link: https://syzkaller.appspot.com/bug?extid=9d014e6e0df70d97c103
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15bf0adec80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1391fcd5c80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: fs/ntfs3: Add more attributes checks in mi_enum_attr()

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