linux-kernel - Re: [PATCH 6/6] drm/panic: Fix 24bit pixel crossing page boundaries

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Message-ID: <874is2q6gd.fsf@ocarina.mail-host-address-is-not-set>
Date: Tue, 14 Oct 2025 09:37:54 +0200
From: Javier Martinez Canillas <javierm@...hat.com>
To: Jocelyn Falempe <jfalempe@...hat.com>, Maarten Lankhorst
 <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
 Thomas Zimmermann <tzimmermann@...e.de>, David Airlie <airlied@...il.com>,
 Simona Vetter <simona@...ll.ch>, Jocelyn Falempe <jfalempe@...hat.com>,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Cc: stable@...r.kernel.org
Subject: Re: [PATCH 6/6] drm/panic: Fix 24bit pixel crossing page boundaries

Jocelyn Falempe <jfalempe@...hat.com> writes:

> When using page list framebuffer, and using RGB888 format, some
> pixels can cross the page boundaries, and this case was not handled,
> leading to writing 1 or 2 bytes on the next virtual address.
>
> Add a check and a specific function to handle this case.
>
> Fixes: c9ff2808790f0 ("drm/panic: Add support to scanout buffer as array of pages")
> Signed-off-by: Jocelyn Falempe <jfalempe@...hat.com>
> ---

Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat