linux-kernel - Re: [PATCH] drm/i915: Replace kmalloc() + copy_from_user() with memdup

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Message-ID: <xbqfj4owftg2fwbxhj6zgajzzb2kgmgzk7dr6xcn2nudojl7sp@rulvri7zbwdf>
Date: Tue, 2 Sep 2025 18:02:53 +0200
From: Andi Shyti <andi.shyti@...nel.org>
To: Thorsten Blum <thorsten.blum@...ux.dev>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>, 
	Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>, Rodrigo Vivi <rodrigo.vivi@...el.com>, 
	Tvrtko Ursulin <tursulin@...ulin.net>, David Airlie <airlied@...il.com>, 
	Simona Vetter <simona@...ll.ch>, Nitin Gote <nitin.r.gote@...el.com>, 
	Mikołaj Wasiak <mikolaj.wasiak@...el.com>, Krzysztof Niemiec <krzysztof.niemiec@...el.com>, 
	Andi Shyti <andi.shyti@...ux.intel.com>, Jani Nikula <jani.nikula@...el.com>, 
	intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/i915: Replace kmalloc() + copy_from_user() with
 memdup_user()

Hi Thorsten,

On Tue, Sep 02, 2025 at 10:10:42AM +0200, Thorsten Blum wrote:
> Replace kmalloc() followed by copy_from_user() with memdup_user() to
> improve and simplify set_context_image(), and to silence the following
> Coccinelle/coccicheck warning reported by memdup_user.cocci:
> 
>   WARNING opportunity for memdup_user
> 
> No functional changes intended.
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>

Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>

Thanks,
Andi