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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <000000000000673b6305eac37e1f@google.com>
Date:   Tue, 11 Oct 2022 07:57:23 -0700
From:   syzbot <syzbot+6ba92bd00d5093f7e371@...kaller.appspotmail.com>
To:     hirofumi@...l.parknet.co.jp, jack@...e.cz, lczerner@...hat.com,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: [syzbot] KASAN: use-after-free Read in move_expired_inodes (2)

syzbot has bisected this issue to:

commit cbfecb927f429a6fa613d74b998496bd71e4438a
Author: Lukas Czerner <lczerner@...hat.com>
Date:   Thu Aug 25 10:06:57 2022 +0000

    fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=17e93452880000
start commit:   493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=14193452880000
console output: https://syzkaller.appspot.com/x/log.txt?x=10193452880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=6ba92bd00d5093f7e371
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1724028a880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17419234880000

Reported-by: syzbot+6ba92bd00d5093f7e371@...kaller.appspotmail.com
Fixes: cbfecb927f42 ("fs: record I_DIRTY_TIME even if inode already has I_DIRTY_INODE")

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