linux-kernel - Re: [PATCH] [media] s5k5baf: Add missing error check for devm

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Message-id: <54D34F93.8050809@samsung.com>
Date:	Thu, 05 Feb 2015 12:10:11 +0100
From:	Andrzej Hajda <a.hajda@...sung.com>
To:	Kiran Padwal <kiran.padwal@...rtplayin.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>
Cc:	Kyungmin Park <kyungmin.park@...sung.com>,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	kiran.padwal21@...il.com
Subject: Re: [PATCH] [media] s5k5baf: Add missing error check for devm_kzalloc

Hi Kiran,

Thanks for spotting it.

On 02/05/2015 11:09 AM, Kiran Padwal wrote:
> This patch add a missing a check on the return value of devm_kzalloc,
> which would cause a NULL pointer dereference in a OOM situation.
>
> Signed-off-by: Kiran Padwal <kiran.padwal@...rtplayin.com>
> ---
>  drivers/media/i2c/s5k5baf.c |    2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c
> index 60a74d8..156b975 100644
> --- a/drivers/media/i2c/s5k5baf.c
> +++ b/drivers/media/i2c/s5k5baf.c
> @@ -374,6 +374,8 @@ static int s5k5baf_fw_parse(struct device *dev, struct s5k5baf_fw **fw,
>  	count -= S5K5BAG_FW_TAG_LEN;
>  
>  	d = devm_kzalloc(dev, count * sizeof(u16), GFP_KERNEL);
> +	if (!d)
> +		return -ENOMEM;
>  
>  	for (i = 0; i < count; ++i)
>  		d[i] = le16_to_cpu(data[i]);
Acked-by: Andrzej Hajda <a.hajda@...sung.com>

Regards
Andrzej
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