linux-kernel - Re: [PATCH] drm/i915/gt: Remove const from struct i915

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Message-ID: <e4rgvbw3ts7bnj2opz44exharx2ybxvjzzwu3kzthnc5i2a37u@fzswrwnjggqd>
Date: Wed, 7 May 2025 17:50:32 +0200
From: Andi Shyti <andi.shyti@...nel.org>
To: Kees Cook <kees@...nel.org>
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>, Matt Roper <matthew.d.roper@...el.com>, 
	Gustavo Sousa <gustavo.sousa@...el.com>, Andi Shyti <andi.shyti@...ux.intel.com>, 
	Lucas De Marchi <lucas.demarchi@...el.com>, intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org, 
	Gnattu OC <gnattuoc@...com>, Nitin Gote <nitin.r.gote@...el.com>, 
	Ranu Maurya <ranu.maurya@...el.com>, Ville Syrjälä <ville.syrjala@...ux.intel.com>, 
	Angus Chen <angus.chen@...el.com>, Juha-Pekka Heikkila <juhapekka.heikkila@...il.com>, 
	Yu Jiaoliang <yujiaoliang@...o.com>, Dnyaneshwar Bhadane <dnyaneshwar.bhadane@...el.com>, 
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] drm/i915/gt: Remove const from struct i915_wa list
 allocation

Hi Kees,

On Fri, Apr 25, 2025 at 11:13:58PM -0700, Kees Cook wrote:
> In preparation for making the kmalloc family of allocators type aware,
> we need to make sure that the returned type from the allocation matches
> the type of the variable being assigned. (Before, the allocator would
> always return "void *", which can be implicitly cast to any pointer type.)
> 
> The assigned type is "struct i915_wa *". The returned type, while
> technically matching, will be const qualified. As there is no general
> way to remove const qualifiers, adjust the allocation type to match
> the assignment.
> 
> Signed-off-by: Kees Cook <kees@...nel.org>

merged to drm-intel-gt-next.

Thanks,
Andi