linux-kernel - Re: [syzbot] [ntfs3?] general protection fault in ni_readpage

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Date:   Sun, 11 Jun 2023 15:17:27 -0700
From:   syzbot <syzbot+af224b63e76b2d869bc3@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org,
        almaz.alexandrovich@...agon-software.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        neilb@...e.de, ntfs3@...ts.linux.dev,
        syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org
Subject: Re: [syzbot] [ntfs3?] general protection fault in ni_readpage_cmpr

syzbot has bisected this issue to:

commit 9fd472af84abd6da15376353c2283b3df9497646
Author: NeilBrown <neilb@...e.de>
Date:   Tue Mar 22 21:38:54 2022 +0000

    mm: improve cleanup when ->readpages doesn't process all pages

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1285d453280000
start commit:   64569520920a Merge tag 'block-6.4-2023-06-09' of git://git..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1185d453280000
console output: https://syzkaller.appspot.com/x/log.txt?x=1685d453280000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3c980bfe8b399968
dashboard link: https://syzkaller.appspot.com/bug?extid=af224b63e76b2d869bc3
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15835795280000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16966d43280000

Reported-by: syzbot+af224b63e76b2d869bc3@...kaller.appspotmail.com
Fixes: 9fd472af84ab ("mm: improve cleanup when ->readpages doesn't process all pages")

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