linux-kernel - Re: [PATCH 8/8] staging: dgap: fix memory leak in dgap

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Message-ID: <20140715065116.GS25880@mwanda>
Date:	Tue, 15 Jul 2014 09:51:16 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Daeseok Youn <daeseok.youn@...il.com>
Cc:	lidza.louina@...il.com, devel@...verdev.osuosl.org,
	gregkh@...uxfoundation.org, driverdev-devel@...uxdriverproject.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 8/8] staging: dgap: fix memory leak in dgap_parsefile()

On Tue, Jul 15, 2014 at 12:05:14PM +0900, Daeseok Youn wrote:
> The p->u.board.status is allocated and set a string as
> "No" once within allocating a node of BNODE type.
> But it also set again with kstrdup() in case of "STATUS"
> or "ID". If it is not allocated yet, use kstrdup().
> If not, use just memcpy().

I don't think a 2 char buffer is always large enough to hold the new
strings.

Just free it and allocate again.

regards,
dan carpenter

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