linux-kernel - Re: [PATCH] Fixes two memory leaks in drivers/clk/sunxi/clk-sunxi.c

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Date:	Fri, 13 Jun 2014 23:11:12 -0300
From:	Emilio López <emilio@...pez.com.ar>
To:	Nick <xerofoify@...il.com>
CC:	mturquette@...aro.org, maxime.ripard@...e-electrons.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] Fixes two memory leaks in drivers/clk/sunxi/clk-sunxi.c

Hi,

El 13/06/14 22:47, Nick escribió:
> diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
> index 4264834..07b45d1 100644
> --- a/drivers/clk/sunxi/clk-sunxi.c
> +++ b/drivers/clk/sunxi/clk-sunxi.c
> @@ -41,9 +41,11 @@ static void __init sun4i_osc_clk_setup(struct device_node *node)
>   	const char *clk_name = node->name;
>   	u32 rate;
>
> -	if (of_property_read_u32(node, "clock-frequency", &rate))
> +	if (of_property_read_u32(node, "clock-frequency", &rate)) {
> +		kfree(fixed);
> +		kfree(gate);

Why are you trying to free these two, when they haven't been allocated yet?

>   		return;
> -
> +	}
>   	/* allocate fixed-rate and gate clock structs */
>   	fixed = kzalloc(sizeof(struct clk_fixed_rate), GFP_KERNEL);
>   	if (!fixed)
>

fixed is allocated here. gate follows suit after it.

Cheers,

Emilio

PS: For next time, please use a proper prefix on your patch subject 
("clk: sunxi: " in this case) as well as add a description to your patch 
and a signoff line.
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