linux-kernel - Re: [PATCH] coccinelle: misc: add array_size_dup script to detect missed overlow checks

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Message-ID: <202006151123.3C2CB7782@keescook>
Date:   Mon, 15 Jun 2020 11:23:23 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Denis Efremov <efremov@...ux.com>
Cc:     Julia Lawall <Julia.Lawall@...6.fr>, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] coccinelle: misc: add array_size_dup script to detect
 missed overlow checks

On Mon, Jun 15, 2020 at 01:20:45PM +0300, Denis Efremov wrote:
> Detect an opencoded expression that is used before or after
> array_size()/array3_size()/struct_size() to compute the same size.
> 
> Cc: Kees Cook <keescook@...omium.org>
> Signed-off-by: Denis Efremov <efremov@...ux.com>

Oh, very cool! How much does this find currently?

-- 
Kees Cook