linux-kernel - Re: [PATCH v2] checkpatch: Improve ALLOC_ARRAY

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Message-ID: <579ee13e8e3805cbc6e6070becbd60bcc1ed3ff6.camel@perches.com>
Date:   Fri, 16 Apr 2021 11:04:42 -0700
From:   Joe Perches <joe@...ches.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        apw@...onical.com, dwaipayanray1@...il.com,
        lukas.bulwahn@...il.com, Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH v2] checkpatch: Improve ALLOC_ARRAY_ARGS test

On Fri, 2021-04-16 at 19:57 +0200, Christophe JAILLET wrote:
> The devm_ variant of 'kcalloc()' and 'kmalloc_array()' are not tested
> Add the corresponding check.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> ---
> v2: use a cleaner regex as proposed by Joe Perches

Acked-by: Joe Perches <joe@...ches.com>

> ---
>  scripts/checkpatch.pl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 44b9dc330ac6..23697a6b1eaa 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -7006,7 +7006,7 @@ sub process {
>  		}
>  
> 
>  # check for alloc argument mismatch
> -		if ($line =~ /\b(kcalloc|kmalloc_array)\s*\(\s*sizeof\b/) {
> +		if ($line =~ /\b((?:devm_)?(?:kcalloc|kmalloc_array))\s*\(\s*sizeof\b/) {
>  			WARN("ALLOC_ARRAY_ARGS",
>  			     "$1 uses number as first arg, sizeof is generally wrong\n" . $herecurr);
>  		}