linux-kernel - Re: [PATCH 02/26] octeon_ep: use array

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Message-ID: <ZJcP5orP0eidH2re@corigine.com>
Date:   Sat, 24 Jun 2023 17:46:46 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Julia Lawall <Julia.Lawall@...ia.fr>
Cc:     Veerasenareddy Burru <vburru@...vell.com>, keescook@...omium.org,
        kernel-janitors@...r.kernel.org,
        Abhijit Ayarekar <aayarekar@...vell.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 02/26] octeon_ep: use array_size

On Fri, Jun 23, 2023 at 11:14:33PM +0200, Julia Lawall wrote:
> Use array_size to protect against multiplication overflows.
> 
> The changes were done using the following Coccinelle semantic patch:
> 
> // <smpl>
> @@
>     expression E1, E2;
>     constant C1, C2;
>     identifier alloc = {vmalloc,vzalloc};
> @@
>     
> (
>       alloc(C1 * C2,...)
> |
>       alloc(
> -           (E1) * (E2)
> +           array_size(E1, E2)
>       ,...)
> )
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...ia.fr>

Reviewed-by: Simon Horman <simon.horman@...igine.com>