linux-kernel - [026/116] V4L/DVB (13961): em28xx-dvb: fix memleak in dvb

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Message-Id: <20100330225614.483663827@linux.site>
Date:	Tue, 30 Mar 2010 15:55:04 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Francesco Lavra <francescolavra@...erfree.it>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [026/116] V4L/DVB (13961): em28xx-dvb: fix memleak in dvb_fini()

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Francesco Lavra <francescolavra@...erfree.it>

commit 19f48cb105b7fa18d0dcab435919a3a29b7a7c4c upstream.

this patch fixes a memory leak which occurs when an em28xx card with DVB
extension is unplugged or its DVB extension driver is unloaded. In
dvb_fini(), dev->dvb must be freed before being set to NULL, as is done
in dvb_init() in case of error.
Note that this bug is also present in the latest stable kernel release.

Signed-off-by: Francesco Lavra <francescolavra@...erfree.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/media/video/em28xx/em28xx-dvb.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -610,6 +610,7 @@ static int dvb_fini(struct em28xx *dev)
 
 	if (dev->dvb) {
 		unregister_dvb(dev->dvb);
+		kfree(dev->dvb);
 		dev->dvb = NULL;
 	}
 


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