linux-kernel - Re: WARNING in drm_mode_createblob

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

Message-ID: <00000000000012ff570596af15cc@google.com>
Date:   Wed, 06 Nov 2019 07:20:00 -0800
From:   syzbot <syzbot+fb77e97ebf0612ee6914@...kaller.appspotmail.com>
To:     airlied@...ux.ie, akpm@...ux-foundation.org, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org, dvyukov@...gle.com,
        keescook@...omium.org, linux-kernel@...r.kernel.org,
        maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
        sean@...rly.run, sfr@...b.auug.org.au,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: Re: WARNING in drm_mode_createblob_ioctl

syzbot has bisected this bug to:

commit 9e5a64c71b2f70ba530f8156046dd7dfb8a7a0ba
Author: Kees Cook <keescook@...omium.org>
Date:   Mon Nov 4 22:57:23 2019 +0000

     uaccess: disallow > INT_MAX copy sizes

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=125fe6dce00000
start commit:   51309b9d Add linux-next specific files for 20191105
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=115fe6dce00000
console output: https://syzkaller.appspot.com/x/log.txt?x=165fe6dce00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=a9b1a641c1f1fc52
dashboard link: https://syzkaller.appspot.com/bug?extid=fb77e97ebf0612ee6914
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1212dc3ae00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=145f604ae00000

Reported-by: syzbot+fb77e97ebf0612ee6914@...kaller.appspotmail.com
Fixes: 9e5a64c71b2f ("uaccess: disallow > INT_MAX copy sizes")

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