linux-hardening - Re: [PATCH][next] crypto: nx - Use static

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Message-ID: <ZsBMckWJ_GXaBFme@gondor.apana.org.au>
Date: Sat, 17 Aug 2024 15:08:34 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Haren Myneni <haren@...ibm.com>, Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	linuxppc-dev@...ts.ozlabs.org, linux-crypto@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] crypto: nx - Use static_assert() to check struct
 sizes

On Thu, Aug 08, 2024 at 04:09:06PM -0600, Gustavo A. R. Silva wrote:
> Commit 1e6b251ce175 ("crypto: nx - Avoid -Wflex-array-member-not-at-end
> warning") introduced tagged `struct nx842_crypto_header_hdr`. We want
> to ensure that when new members need to be added to the flexible
> structure, they are always included within this tagged struct.
> 
> So, we use `static_assert()` to ensure that the memory layout for
> both the flexible structure and the tagged struct is the same after
> any changes.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
> ---
>  drivers/crypto/nx/nx-842.h | 3 +++
>  1 file changed, 3 insertions(+)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt