[PATCH] um: fix a memory leak in the multicast driver

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

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c
index 8138f5ea1bf7..b827e82884c9 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,