diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index 7c1d8d93baba..794461ed738a 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -903,8 +903,10 @@ udp_attach(struct socket *so, int proto, struct thread *td)
 	s = splnet();
 	error = in_pcballoc(so, &udbinfo, td);
 	splx(s);
-	if (error)
+	if (error) {
+		INP_INFO_WUNLOCK(&udbinfo);
 		return error;
+	}
 
 	inp = (struct inpcb *)so->so_pcb;
 	INP_LOCK(inp);