linux-kernel - Re: [PATCH 04/26] gve: use array

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Message-ID: <ZJcQA4baHKWgo9zV@corigine.com>
Date:   Sat, 24 Jun 2023 17:47:15 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Julia Lawall <Julia.Lawall@...ia.fr>
Cc:     Jeroen de Borst <jeroendb@...gle.com>, keescook@...omium.org,
        kernel-janitors@...r.kernel.org,
        Praveen Kaligineedi <pkaligineedi@...gle.com>,
        Shailend Chand <shailend@...gle.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 04/26] gve: use array_size

On Fri, Jun 23, 2023 at 11:14:35PM +0200, Julia Lawall wrote:
> Use array_size to protect against multiplication overflows.
> 
> The changes were done using the following Coccinelle semantic patch:
> 
> // <smpl>
> @@
>     size_t e1,e2;
>     expression COUNT;
>     identifier alloc = {vmalloc,vzalloc,kvmalloc,kvzalloc};
> @@
> 
> (
>       alloc(
> -           (e1) * (e2)
> +           array_size(e1, e2)
>       ,...)
> |
>       alloc(
> -           (e1) * (COUNT)
> +           array_size(COUNT, e1)
>       ,...)
> )
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...ia.fr>

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