linux-kernel - Re: [PATCH v4] drm/ssd130x: Allocate buffers in the plane's .atomic

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Message-ID: <c3169a54ab922cfefd4372ce897446ba.mripard@kernel.org>
Date:   Fri, 21 Jul 2023 07:33:42 +0000
From:   "Maxime Ripard" <mripard@...nel.org>
To:     "Javier Martinez Canillas" <javierm@...hat.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        "Daniel Vetter" <daniel.vetter@...ll.ch>,
        "Daniel Vetter" <daniel@...ll.ch>,
        "David Airlie" <airlied@...il.com>,
        "Geert Uytterhoeven" <geert@...ux-m68k.org>,
        "Maxime Ripard" <mripard@...nel.org>,
        "Thomas Zimmermann" <tzimmermann@...e.de>
Subject: Re: [PATCH v4] drm/ssd130x: Allocate buffers in the plane's
 .atomic_check callback

On Fri, 21 Jul 2023 09:09:50 +0200, Javier Martinez Canillas wrote:
> Geert reports that the following NULL pointer dereference happens for him
> after commit 49d7d581ceaf ("drm/ssd130x: Don't allocate buffers on each
> plane update"):
> 
>     [drm] Initialized ssd130x 1.0.0 20220131 for 0-003c on minor 0
> 
> [ ... ]

Acked-by: Maxime Ripard <mripard@...nel.org>

Thanks!
Maxime