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Date:   Tue, 27 Oct 2020 19:25:20 +0100
From:   Borislav Petkov <bp@alien8.de>
To:     Bartosz Golaszewski <brgl@bgdev.pl>
Cc:     Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Sumit Semwal <sumit.semwal@linaro.org>,
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        Christian =?utf-8?B?S8O2bmln?= <christian.koenig@amd.com>,
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        Tony Luck <tony.luck@intel.com>,
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        dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
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        Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: Re: [PATCH 5/8] edac: ghes: use krealloc_array()
Message-ID: <20201027182520.GK15580@zn.tnic>
References: <20201027121725.24660-1-brgl@bgdev.pl>
 <20201027121725.24660-6-brgl@bgdev.pl>
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On Tue, Oct 27, 2020 at 01:17:22PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> 
> Use the helper that checks for overflows internally instead of manually
> calculating the size of the new array.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
> ---
>  drivers/edac/ghes_edac.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
> index a918ca93e4f7..6d1ddecbf0da 100644
> --- a/drivers/edac/ghes_edac.c
> +++ b/drivers/edac/ghes_edac.c
> @@ -207,8 +207,8 @@ static void enumerate_dimms(const struct dmi_header *dh, void *arg)
>  	if (!hw->num_dimms || !(hw->num_dimms % 16)) {
>  		struct dimm_info *new;
>  
> -		new = krealloc(hw->dimms, (hw->num_dimms + 16) * sizeof(struct dimm_info),
> -			        GFP_KERNEL);
> +		new = krealloc_array(hw->dimms, hw->num_dimms + 16,
> +				     sizeof(struct dimm_info), GFP_KERNEL);
>  		if (!new) {
>  			WARN_ON_ONCE(1);
>  			return;
> -- 

Sure, why not.

Acked-by: Borislav Petkov <bp@suse.de>

-- 
Regards/Gruss,
    Boris.

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