===== net/netlink/af_netlink.c 1.48 vs edited =====
--- 1.48/net/netlink/af_netlink.c	2004-06-19 04:43:31 +10:00
+++ edited/net/netlink/af_netlink.c	2004-06-30 20:53:00 +10:00
@@ -365,6 +365,7 @@
 	struct sockaddr_nl *nladdr=(struct sockaddr_nl*)addr;
 
 	if (addr->sa_family == AF_UNSPEC) {
+		sock->state	= SS_UNCONNECTED;
 		nlk->dst_pid	= 0;
 		nlk->dst_groups = 0;
 		return 0;
@@ -380,6 +381,7 @@
 		err = netlink_autobind(sock);
 
 	if (err == 0) {
+		sock->state	= SS_CONNECTED;
 		nlk->dst_pid 	= nladdr->nl_pid;
 		nlk->dst_groups = nladdr->nl_groups;
 	}
@@ -428,6 +430,12 @@
 	/* Don't bother queuing skb if kernel socket has no input function */
 	nlk = nlk_sk(sock);
 	if (nlk->pid == 0 && !nlk->data_ready) {
+		sock_put(sock);
+		return ERR_PTR(-ECONNREFUSED);
+	}
+
+	if (sock->sk_socket->state == SS_CONNECTED &&
+	    nlk->dst_pid != nlk_sk(ssk)->pid) {
 		sock_put(sock);
 		return ERR_PTR(-ECONNREFUSED);
 	}