linux-kernel - [PATCH 06/11] uml: fix a memory leak in the multicast driver

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Message-Id: <20070305204904.9072.74534.stgit@americanbeauty.home.lan>
Date:	Mon, 05 Mar 2007 21:49:04 +0100
From:	Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it>
To:	Andrew Morton <akpm@...l.org>
Cc:	Jeff Dike <jdike@...toit.com>, linux-kernel@...r.kernel.org,
	user-mode-linux-devel@...ts.sourceforge.net
Subject: [PATCH 06/11] uml: fix a memory leak in the multicast driver

From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it>

Memory allocated by mcast_user_init must be freed in the matching mcast_remove.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@...oo.it>
---

 arch/um/drivers/mcast_user.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index 8138f5e..b827e82 100644
--- a/arch/um/drivers/mcast_user.c
+++ b/arch/um/drivers/mcast_user.c
@@ -50,6 +50,14 @@ static void mcast_user_init(void *data, void *dev)
 	pri->dev = dev;
 }
 
+static void mcast_remove(void *data)
+{
+	struct mcast_data *pri = data;
+
+	kfree(pri->mcast_addr);
+	pri->mcast_addr = NULL;
+}
+
 static int mcast_open(void *data)
 {
 	struct mcast_data *pri = data;
@@ -157,7 +165,7 @@ const struct net_user_info mcast_user_info = {
 	.init		= mcast_user_init,
 	.open		= mcast_open,
 	.close	 	= mcast_close,
-	.remove	 	= NULL,
+	.remove	 	= mcast_remove,
 	.set_mtu	= mcast_set_mtu,
 	.add_address	= NULL,
 	.delete_address = NULL,


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