linux-hardening - Re: [PATCH v2][next] drm/nouveau: chan: Avoid -Wflex-array-member-not-at-end warnings

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Message-ID: <aAkIiKbPaYEYUtv_@pollux>
Date: Wed, 23 Apr 2025 17:34:32 +0200
From: Danilo Krummrich <dakr@...nel.org>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Lyude Paul <lyude@...hat.com>, David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>, dri-devel@...ts.freedesktop.org,
	nouveau@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org, Kees Cook <kees@...nel.org>
Subject: Re: [PATCH v2][next] drm/nouveau: chan: Avoid
 -Wflex-array-member-not-at-end warnings

On Wed, Apr 16, 2025 at 12:00:42PM -0600, Gustavo A. R. Silva wrote:
> -Wflex-array-member-not-at-end was introduced in GCC-14, and we are
> getting ready to enable it, globally.
> 
> Use the `DEFINE_RAW_FLEX()` helper for a few on-stack definitions
> of a flexible structure where the size of the flexible-array member
> is known at compile-time, and refactor the rest of the code,
> accordingly.
> 
> So, with these changes, fix the following warnings:
> 
> drivers/gpu/drm/nouveau/nouveau_chan.c:274:37: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> drivers/gpu/drm/nouveau/nouveau_chan.c:371:46: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> drivers/gpu/drm/nouveau/nouveau_chan.c:524:42: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> 
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

Applied to drm-misc-next, thanks!