linux-kernel - Re: KASAN: slab-out-of-bounds Read in dlfb_usb

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Date:   Fri, 22 May 2020 16:18:03 -0700
From:   syzbot <syzbot+ed94135f896a14d75284@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, balbi@...nel.org,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, rafael@...nel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: slab-out-of-bounds Read in dlfb_usb_probe

syzbot has bisected this bug to:

commit f2c2e717642c66f7fe7e5dd69b2e8ff5849f4d10
Author: Andrey Konovalov <andreyknvl@...gle.com>
Date:   Mon Feb 24 16:13:03 2020 +0000

    usb: gadget: add raw-gadget interface

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10510cba100000
start commit:   051143e1 Merge tag 'apparmor-pr-2020-05-21' of git://git.k..
git tree:       upstream
final crash:    https://syzkaller.appspot.com/x/report.txt?x=12510cba100000
console output: https://syzkaller.appspot.com/x/log.txt?x=14510cba100000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b3368ce0cc5f5ace
dashboard link: https://syzkaller.appspot.com/bug?extid=ed94135f896a14d75284
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=103d795e100000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=143d795e100000

Reported-by: syzbot+ed94135f896a14d75284@...kaller.appspotmail.com
Fixes: f2c2e717642c ("usb: gadget: add raw-gadget interface")

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