[DCCP]: Set dccp_ctl_socket to NULL in dccp_ctl_sock_exit

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index 0b715ceb38b..8b613c3017c 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -506,8 +506,10 @@ static int __init dccp_ctl_sock_init(void)
 #ifdef CONFIG_IP_DCCP_UNLOAD_HACK
 void dccp_ctl_sock_exit(void)
 {
-        if (dccp_ctl_socket != NULL)
+        if (dccp_ctl_socket != NULL) {
                 sock_release(dccp_ctl_socket);
+                dccp_ctl_socket = NULL;
+        }
 }
 
 EXPORT_SYMBOL_GPL(dccp_ctl_sock_exit);