diff --git a/[refs] b/[refs]
index db05ae66ea3e..79d675baae43 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: be639ac6901a082894771f55c8047d5772de5c27
+refs/heads/master: ac1a1de31515d950f858ba47d2bba74ff9a2614d
diff --git a/trunk/net/netrom/nr_route.c b/trunk/net/netrom/nr_route.c
index 915a87ba23e1..8d7716ca5342 100644
--- a/trunk/net/netrom/nr_route.c
+++ b/trunk/net/netrom/nr_route.c
@@ -678,6 +678,11 @@ int nr_rt_ioctl(unsigned int cmd, void __user *arg)
 		}
 		switch (nr_route.type) {
 		case NETROM_NODE:
+			if (strnlen(nr_route.mnemonic, 7) == 7) {
+				ret = -EINVAL;
+				break;
+			}
+
 			ret = nr_add_node(&nr_route.callsign,
 				nr_route.mnemonic,
 				&nr_route.neighbour,