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Message-ID: <CADnq5_NAaX6t3r+J8qcEfL1-8SOunU9YR3HqohmuGTm_xBow+g@mail.gmail.com>
Date: Mon, 21 Nov 2022 12:43:25 -0500
From: Alex Deucher <alexdeucher@...il.com>
To: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@...il.com>
Cc: Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
"Pan, Xinhui" <Xinhui.Pan@....com>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Rongguang Wei <weirongguang@...inos.cn>,
Slark Xiao <slark_xiao@....com>, amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
linux-hardening@...r.kernel.org
Subject: Re: [PATCH] [next] drm/amdgpu: Replace remaining 1-element array with flex-array
Applied. Thanks!
Alex
On Mon, Nov 21, 2022 at 2:26 AM Paulo Miguel Almeida
<paulo.miguel.almeida.rodenas@...il.com> wrote:
>
> One-element arrays are deprecated, and we are replacing them with
> flexible array members instead. So, replace one-element array with
> flexible-array member in struct GOP_VBIOS_CONTENT and refactor the
> rest of the code accordingly.
>
> Important to mention is that doing a build before/after this patch
> results in no functional binary output differences.
>
> This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> routines on memcpy() and help us make progress towards globally
> enabling -fstrict-flex-arrays=3 [1].
>
> Link: https://github.com/KSPP/linux/issues/79
> Link: https://github.com/KSPP/linux/issues/238
> Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836 [1]
>
> Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@...il.com>
> ---
> This should be the last one-element array that had references in source
> code. Given the way it was used, no *.c code change was required.
>
> I will move on to the atombios.h in the radeon driver.
> ---
> drivers/gpu/drm/amd/include/atombios.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/include/atombios.h b/drivers/gpu/drm/amd/include/atombios.h
> index 4dc738c51771..b78360a71bc9 100644
> --- a/drivers/gpu/drm/amd/include/atombios.h
> +++ b/drivers/gpu/drm/amd/include/atombios.h
> @@ -9292,7 +9292,7 @@ typedef struct {
>
> typedef struct {
> VFCT_IMAGE_HEADER VbiosHeader;
> - UCHAR VbiosContent[1];
> + UCHAR VbiosContent[];
> }GOP_VBIOS_CONTENT;
>
> typedef struct {
> --
> 2.37.3
>
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