Cumulative patch from commit 1acf38f1a5aa19169035de9b611fc76440729c0b

1acf38f Add ifname to vlan_remove_dynamic() debug print
2e192bd Print debug entry on STA pruning from other interfaces
c8e6bea Remove VLAN interface on STA free
de31fb0 vlan: Ignore multiple NEWLINK messages
371205d vlan: Ignore DELLINK on interfaces that exists
a5e81ba Fix STA VLAN bind for RSN pre-authentication case
3ffdeb7 Fix RSN preauthentication with dynamic_vlan enabled but unused
8e2c5f1 dbus: Fix WPS property of fi.w1.wpa_supplicant1.BSS interface
d447cd5 Updates for stricter automatic memcpy bounds checking
60eb9e1 AP: Enable multicast snooping on bridge if ProxyARP IPv6 is in use
b799118 Fix CONFIG_AP=y build without CONFIG_CTRL_IFACE
954f03a Fix compilation issues with CONFIG_NO_CONFIG_WRITE=y
da3db68 Fix INTERFACE_ADD parsing

Change-Id: If25ebad847bc2a1b5d9386cbaa80c6fd8ce4e226
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/wpa_supplicant/ctrl_iface.c b/wpa_supplicant/ctrl_iface.c
index 377b9ed..d48ac8a 100644
--- a/wpa_supplicant/ctrl_iface.c
+++ b/wpa_supplicant/ctrl_iface.c
@@ -8593,10 +8593,17 @@
 		pos = os_strchr(pos, '\t');
 		if (pos)
 			*pos++ = '\0';
+		if (!extra[0])
+			break;
+
 		if (os_strcmp(extra, "create") == 0)
 			create_iface = 1;
-		else
+		else {
+			wpa_printf(MSG_DEBUG,
+				   "INTERFACE_ADD unsupported extra parameter: '%s'",
+				   extra);
 			return -1;
+		}
 	} while (0);
 
 	if (create_iface) {