linux-kernel - Re: [PATCH v2] platform/x86: wmi: fix potential null pointer dereference

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Message-ID: <20190221012947.GD5838@wrath>
Date:   Wed, 20 Feb 2019 17:29:47 -0800
From:   Darren Hart <dvhart@...radead.org>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Mattias Jacobsson <2pi@....nu>,
        Andy Shevchenko <andy@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] platform/x86: wmi: fix potential null pointer
 dereference

On Wed, Jan 30, 2019 at 05:43:34PM +0200, Andy Shevchenko wrote:
> On Wed, Jan 30, 2019 at 5:15 PM Mattias Jacobsson <2pi@....nu> wrote:
> >
> > In the function wmi_dev_match() the variable id is dereferenced without
> > first performing a NULL check. The variable can for example be NULL if
> > a WMI driver is registered without specifying the id_table field in
> > struct wmi_driver.
> >
> > Add a NULL check and return that the driver can't handle the device if
> > the variable is NULL.
> >
> 
> Good for me, thanks!

Queued for testing, thanks Mattias.

-- 
Darren Hart
VMware Open Source Technology Center