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

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Message-ID: <0000000000002bfce805a3e2aec4@google.com>
Date:   Wed, 22 Apr 2020 08:21:03 -0700
From:   syzbot <syzbot+7bf5a7b0f0a1f9446f4c@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, benjamin.tissoires@...hat.com,
        dmitry.torokhov@...il.com, gregkh@...uxfoundation.org,
        hdegoede@...hat.com, ingrassia@...genesys.com, jikos@...nel.org,
        julian@...ht.net, killertofu@...il.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, pingc@...om.com, pinglinux@...il.com,
        stern@...land.harvard.edu, syzkaller-bugs@...glegroups.com
Subject: Re: KASAN: use-after-free Read in usbhid_close (3)

Hello,

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

Reported-and-tested-by: syzbot+7bf5a7b0f0a1f9446f4c@...kaller.appspotmail.com

Tested on:

commit:         0fa84af8 Merge tag 'usb-serial-5.7-rc1' of https://git.ker..
git tree:       https://github.com/google/kasan.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=6b9c154b0c23aecf
dashboard link: https://syzkaller.appspot.com/bug?extid=7bf5a7b0f0a1f9446f4c
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
patch:          https://syzkaller.appspot.com/x/patch.diff?x=14f40acfe00000

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