linux-kernel - Re: [PATCH] drm/i915/display: fix missing null check on allocated dsb object

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Message-ID: <877dvon66o.fsf@intel.com>
Date:   Tue, 30 Jun 2020 14:28:47 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Colin Ian King <colin.king@...onical.com>,
        Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Animesh Manna <animesh.manna@...el.com>,
        Maarten Lankhorst <maarten.lankhorst@...el.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915/display: fix missing null check on allocated dsb object

On Tue, 16 Jun 2020, Colin Ian King <colin.king@...onical.com> wrote:
> On 16/06/2020 12:54, Dan Carpenter wrote:
>> On Tue, Jun 16, 2020 at 12:42:21PM +0100, Colin King wrote:
>>> From: Colin Ian King <colin.king@...onical.com>
>>>
>>> Currently there is no null check for a failed memory allocation
>>> on the dsb object and without this a null pointer dereference
>>> error can occur. Fix this by adding a null check.
>>>
>>> Note: added a drm_err message in keeping with the error message style
>>> in the function.
>> 
>> Don't give in to peer pressure!  That's like being a lemming when Disney
>> film makers come to push you off the cliff to create the 1958 nature
>> film "White Wilderness".
>
> :-)

Pushed, thanks for the patch and smile.

BR,
Jani.


>
>> 
>> regards,
>> dan carpenter
>> 
>

-- 
Jani Nikula, Intel Open Source Graphics Center