Index: uipc_socket.c
===================================================================
RCS file: /usr/repo/src/sys/kern/uipc_socket.c,v
retrieving revision 1.280
diff -u -p -r1.280 uipc_socket.c
--- uipc_socket.c	18 Aug 2006 14:05:13 -0000	1.280
+++ uipc_socket.c	11 Sep 2006 17:58:40 -0000
@@ -1025,11 +1025,11 @@ sosend_dgram(so, addr, uio, top, control
 	if (flags & MSG_OOB)
 		space += 1024;
 	space -= clen;
+	SOCKBUF_UNLOCK(&so->so_snd);
 	if (resid > space) {
 		error = EMSGSIZE;
 		goto out;
 	}
-	SOCKBUF_UNLOCK(&so->so_snd);
 	if (uio == NULL) {
 		resid = 0;
 		if (flags & MSG_EOR)