linux-kernel - Re: [PATCH] drm/gma500: fix double freeing

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Message-ID: <CAMeQTsZvcpL3MRF_VTR_nvbhKKUTK-+c_kEc2UBP2t6WzAr3vg@mail.gmail.com>
Date:	Tue, 29 Sep 2015 15:20:35 +0200
From:	Patrik Jakobsson <patrik.r.jakobsson@...il.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	dri-devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] drm/gma500: fix double freeing

On Thu, Sep 24, 2015 at 5:57 PM, Sudip Mukherjee
<sudipm.mukherjee@...il.com> wrote:
> On Wed, Sep 09, 2015 at 06:20:40PM +0530, Sudip Mukherjee wrote:
>> If backing->stolen is true then we were freeing backing by calling
>> psb_gtt_free_range() but we called it again after unlocking the mutex.
>> Lets make it NULL after freeing in psb_gtt_free_range() and check for
>> NULL before calling the function for the second time.
>>
>> Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
>> ---
> Hi Patrik,
> A gentle ping.
>
> regards
> sudip

Hi, sorry for the late reply.

Why are we freeing the range twice in the first case?

-Patrik
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