linux-kernel - Re: [PATCH next 1/2] media: mtk-mdp: fix video_device

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Message-ID: <20161028075253.gdy2bbugih6oqncw@romuald.bergerie>
Date:   Fri, 28 Oct 2016 09:52:54 +0200
From:   Vincent Stehlé <vincent.stehle@...oste.net>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Minghsiu Tsai <minghsiu.tsai@...iatek.com>,
        Hans Verkuil <hans.verkuil@...co.com>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>
Subject: Re: [PATCH next 1/2] media: mtk-mdp: fix video_device_release
 argument

On Thu, Oct 27, 2016 at 10:23:24PM +0200, Vincent Stehlé wrote:
> video_device_release() takes a pointer to struct video_device as argument.
> Fix two call sites where the address of the pointer is passed instead.

Sorry, I messed up: please ignore that "fix". The 0day robot made me
realize this is indeed not a proper fix.

The issue remains, though: we cannot call video_device_release() on the
vdev structure member, as this will in turn call kfree(). Most probably,
vdev needs to be dynamically allocated, or the call to
video_device_release() dropped completely.

Sorry for the bad patch.

Best regards,

Vincent.