linux-kernel - Re: KASAN: use-after-free Read in appledisplay_bl_get

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Message-ID: <000000000000ce75df0596aca681@google.com>
Date:   Wed, 06 Nov 2019 04:26:00 -0800
From:   syzbot <syzbot+495dab1f175edc9c2f13@...kaller.appspotmail.com>
To:     2pi@....nu, alex.theissen@...com, andreyknvl@...gle.com,
        gregkh@...uxfoundation.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        oneukum@...e.com, syzkaller-bugs@...glegroups.com,
        tranmanphong@...il.com
Subject: Re: KASAN: use-after-free Read in appledisplay_bl_get_brightness

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+495dab1f175edc9c2f13@...kaller.appspotmail.com

Tested on:

commit:         e0bd8d79 usb-fuzzer: main usb gadget fuzzer driver
git tree:       https://github.com/google/kasan.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=8847e5384a16f66a
dashboard link: https://syzkaller.appspot.com/bug?extid=495dab1f175edc9c2f13
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=14d463b2e00000

Note: testing is done by a robot and is best-effort only.