Re: [PATCH] cifs: misc: Use array_size() in if-statement controlling expression

From: Kees Cook
Date: Tue Jun 16 2020 - 14:43:48 EST


On Mon, Jun 15, 2020 at 05:41:12PM -0500, Gustavo A. R. Silva wrote:
> Use array_size() instead of the open-coded version in the controlling
> expression of the if statement.
>
> Also, while there, use the preferred form for passing a size of a struct.
> The alternative form where struct name is spelled out hurts readability
> and introduces an opportunity for a bug when the pointer variable type is
> changed but the corresponding sizeof that is passed as argument is not.
>
> This issue was found with the help of Coccinelle and, audited and fixed
> manually.
>
> Addresses-KSPP-ID: https://github.com/KSPP/linux/issues/83
> Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

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Kees Cook