linux-kernel - Re: [RFC PATCH 3/3] clocksource: mtk_timer: fix memleak in mtk_timer

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Message-ID: <55E958C6.5090209@gmail.com>
Date:	Fri, 4 Sep 2015 10:39:34 +0200
From:	Matthias Brugger <matthias.bgg@...il.com>
To:	Alexey Klimov <alexey.klimov@...aro.org>,
	daniel.lezcano@...aro.org, linux-mediatek@...ts.infradead.org
Cc:	yingjoe.chen@...iatek.com, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, klimov.linux@...il.com
Subject: Re: [RFC PATCH 3/3] clocksource: mtk_timer: fix memleak in
 mtk_timer_init()



On 04/09/15 05:21, Alexey Klimov wrote:
> Add error path to clear evt struct allocated by kzalloc()
> in the beginning of function mtk_timer_init().
>
> Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
> ---
>   drivers/clocksource/mtk_timer.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
> index fbaacbf..9c5a2cc 100644
> --- a/drivers/clocksource/mtk_timer.c
> +++ b/drivers/clocksource/mtk_timer.c
> @@ -201,7 +201,7 @@ static void __init mtk_timer_init(struct device_node *node)
>   	evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer");
>   	if (IS_ERR(evt->gpt_base)) {
>   		pr_err("Can't get resource\n");
> -		return;
> +		goto err_kzalloc;
>   	}
>
>   	evt->dev.irq = irq_of_parse_and_map(node, 0);
> @@ -256,5 +256,7 @@ err_mem:
>   	iounmap(evt->gpt_base);
>   	of_address_to_resource(node, 0, &res);
>   	release_mem_region(res.start, resource_size(&res));
> +err_kzalloc:
> +	kfree(evt);
>   }
>   CLOCKSOURCE_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init);
>

Acked-by: Matthias Brugger <matthias.bgg@...il.com>
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