netdev - Re: [PATCH 5/8] edac: ghes: use krealloc

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Message-ID: <20201027182520.GK15580@zn.tnic>
Date:   Tue, 27 Oct 2020 19:25:20 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Gustavo Padovan <gustavo@...ovan.org>,
        Christian König <christian.koenig@....com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        James Morse <james.morse@....com>,
        Robert Richter <rric@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, linux-media@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
        linux-kernel@...r.kernel.org, linux-edac@...r.kernel.org,
        linux-gpio@...r.kernel.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        linux-mm@...ck.org, alsa-devel@...a-project.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 5/8] edac: ghes: use krealloc_array()

On Tue, Oct 27, 2020 at 01:17:22PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.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@...libre.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@...e.de>

-- 
Regards/Gruss,
    Boris.

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