linux-kernel - Re: [PATCH] crypto: af_alg - use struct_size() in sock_kfree

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Message-ID: <20190228063041.mmuimz5s726lhfso@gondor.apana.org.au>
Date:   Thu, 28 Feb 2019 14:30:41 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] crypto: af_alg - use struct_size() in sock_kfree_s()

On Thu, Feb 21, 2019 at 12:04:23PM -0600, Gustavo A. R. Silva wrote:
> Make use of the struct_size() helper instead of an open-coded version
> in order to avoid any potential type mistakes, in particular in the
> context in which this code is being used.
> 
> So, change the following form:
> 
> sizeof(*sgl) + sizeof(sgl->sg[0]) * (MAX_SGL_ENTS + 1)
> 
> to :
> 
> struct_size(sgl, sg, MAX_SGL_ENTS + 1)
> 
> This code was detected with the help of Coccinelle.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> ---
>  crypto/af_alg.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

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