linux-kernel - [PATCH 93/93] snd_pcm

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Date:	Tue, 18 Jun 2013 12:43:41 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Al Viro <viro@...iv.linux.org.uk>,
	Jonghwan Choi <jhbird.choi@...sung.com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 93/93] snd_pcm_link(): fix a leak...

3.5.7.15 -stable review patch.  If anyone has any objections, please let me know.

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

From: Al Viro <viro@...iv.linux.org.uk>

commit dd6c5cd8fedddc9605209098e2fa4e82c7af22aa upstream.

in case when snd_pcm_stream_linked(substream) is true, we end up leaking
group.

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Cc: Jonghwan Choi <jhbird.choi@...sung.com>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 sound/core/pcm_native.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 7203c9a..ffb9153 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -1633,6 +1633,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
 	}
 	if (!snd_pcm_stream_linked(substream)) {
 		substream->group = group;
+		group = NULL;
 		spin_lock_init(&substream->group->lock);
 		INIT_LIST_HEAD(&substream->group->substreams);
 		list_add_tail(&substream->link_list, &substream->group->substreams);
@@ -1647,8 +1648,7 @@ static int snd_pcm_link(struct snd_pcm_substream *substream, int fd)
  _nolock:
 	snd_card_unref(substream1->pcm->card);
 	fput(file);
-	if (res < 0)
-		kfree(group);
+	kfree(group);
 	return res;
 }
 
-- 
1.8.1.2

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