linux-kernel - Re: [PATCH v2] media: aspeed-video: Fix memory leaks in aspeed_video

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Date:   Mon, 28 Oct 2019 10:01:19 -0700
From:   Jae Hyun Yoo <jae.hyun.yoo@...ux.intel.com>
To:     Navid Emamdoost <navid.emamdoost@...il.com>
Cc:     emamd001@....edu, smccaman@....edu, kjlu@....edu,
        Eddie James <eajames@...ux.ibm.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>, linux-media@...r.kernel.org,
        openbmc@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] media: aspeed-video: Fix memory leaks in
 aspeed_video_probe

On 10/28/2019 9:58 AM, Navid Emamdoost wrote:
> In the implementation of aspeed_video_probe() the allocated memory for
> video should be released if either devm_ioremap_resource()
> or aspeed_video_init() or aspeed_video_setup_video() fails. Replace
> kzalloc() with devm_kzalloc to avoid explicit release for video.
> 
> Fixes: d2b4387f3bdf ("media: platform: Add Aspeed Video Engine driver")
> Signed-off-by: Navid Emamdoost <navid.emamdoost@...il.com>
> ---
> Changes in v2:
> 	-- replace kzalloc with devm_kzalloc based on Jae Hyun Yoo
> suggestion
> 
>   drivers/media/platform/aspeed-video.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/aspeed-video.c b/drivers/media/platform/aspeed-video.c
> index eb12f3793062..2aa8ea2f9824 100644
> --- a/drivers/media/platform/aspeed-video.c
> +++ b/drivers/media/platform/aspeed-video.c
> @@ -1646,7 +1646,7 @@ static int aspeed_video_probe(struct platform_device *pdev)
>   {
>   	int rc;
>   	struct resource *res;
> -	struct aspeed_video *video = kzalloc(sizeof(*video), GFP_KERNEL);
> +	struct aspeed_video *video = devm_kzalloc(sizeof(*video), GFP_KERNEL);

It can't be compiled. devm_kzalloc should have 3 parameters.

Cheers,

Jae