linux-kernel - Re: [PATCH] mtd: fix memory leak

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Date:	Sun, 30 Jan 2011 16:52:33 +0200
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Mathias Krause <minipli@...glemail.com>
Cc:	linux-mtd@...ts.infradead.org,
	David Woodhouse <dwmw2@...radead.org>,
	Joern Engel <joern@...ybastard.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: fix memory leak

Hi,

On Sun, 2011-01-30 at 10:31 +0100, Mathias Krause wrote:
> diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c
> index 5239328..8d28fa0 100644
> --- a/drivers/mtd/devices/phram.c
> +++ b/drivers/mtd/devices/phram.c
> @@ -117,6 +117,7 @@ static void unregister_devices(void)
>  	list_for_each_entry_safe(this, safe, &phram_list, list) {
>  		del_mtd_device(&this->mtd);
>  		iounmap(this->mtd.priv);
> +		kfree(this->mtd.name);
>  		kfree(this);
>  	}

Since register_device() did not allocate it, unregister_devices() should
not free it. Hence, I think it is better to free(name) just after
calling unregister_devices().

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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