linux-kernel - Re: KASAN: slab-out-of-bounds Write in watch_queue

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <000000000000bfac3c0599f513fe@google.com>
Date:   Tue, 17 Dec 2019 23:06:00 -0800
From:   syzbot <syzbot+5a774ffe70862ca9ebc7@...kaller.appspotmail.com>
To:     arnd@...db.de, axboe@...nel.dk, corbet@....net,
        derek.kiernan@...inx.com, dhowells@...hat.com,
        dragan.cvetic@...inx.com, ebiggers@...gle.com,
        gregkh@...uxfoundation.org, hare@...e.com, jaegeuk@...nel.org,
        james.morris@...rosoft.com, jannh@...gle.com,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        mchehab+samsung@...nel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: KASAN: slab-out-of-bounds Write in watch_queue_ioctl

syzbot has bisected this bug to:

commit fe78d401ca6b3639385cf7a9a1597b9cd48f64eb
Author: David Howells <dhowells@...hat.com>
Date:   Fri Oct 11 07:48:08 2019 +0000

     General notification queue with user mmap()'able ring buffer

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1163cafee00000
start commit:   fca4fe89 Add linux-next specific files for 20191217
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=1363cafee00000
console output: https://syzkaller.appspot.com/x/log.txt?x=1563cafee00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=634b7ce01f79423d
dashboard link: https://syzkaller.appspot.com/bug?extid=5a774ffe70862ca9ebc7
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13df92fee00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1003cafee00000

Reported-by: syzbot+5a774ffe70862ca9ebc7@...kaller.appspotmail.com
Fixes: fe78d401ca6b ("General notification queue with user mmap()'able ring  
buffer")

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