Cumulative patch from commit 5f7e1c06cd428888a2ed4fa763c5da37a873e422

5f7e1c0 Redirect more frames with ext_mgmt_frame_handling=1
7738163 RADIUS server: Copy IPv4 address only when IPv6 is not used
508e24c dbus: Clean up error reporting for TDLS peer address parsing
3b6170b WPS: Remove duplicate variable setting
78789d9 Remove unnecessary variable initialization
a7c37d9 dbus: Remove duplicated variable assignment
e997bc7 Remove a static analyzer warning about unused variable write
ea3b8c1 Do not use a separate variable for tracking first entry in a list
8a4ce28 WPA: Clean up cipher suite counting in write routines
6ed626d Remove unused gid_str pointer update
749fa14 Debug print trailing WPA/RSN IE bytes, if any
a5802c0 OpenSSL: Avoid never-used analyzer warning
7b6e815 Clean up hostapd add_iface error path operations
67adcd2 WNM: Check wpa_s->current_bss more consistently
3ff8073 EAP-FAST: Use clear eap_get_config() result validation
a8716d1 roboswitch: Verify that register read succeeds before comparing res
3d91a04 DFS: Make sure center frequency is always initialized for VHT
fa0a9f5 trace: Fix memory use on no-function name path
bd27b13 Make code path easier for static analyzers
64abb72 nl80211: Allow old r-o-c offchannel TX to be tested
fa72a88 P2P: Fix validation on Invitation Request error path
ca412c7 Remove unreachable return statement
2af4d87 GAS: Fix additional comeback delay with status code 95
07d462c Interworking: Remove unused password setting for SIM credential
3141b82 Add OSEN to proto config field writer
b908c50 Clear hostapd bss entry to NULL on add-interface-failure
0052ce4 atheros: Add support for OSEN

Change-Id: Ifd78a8f8259e5b0f654d3dbadd24c9ab029d3afb
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
diff --git a/src/ap/hostapd.c b/src/ap/hostapd.c
index 75baec0..ad1c2d0 100644
--- a/src/ap/hostapd.c
+++ b/src/ap/hostapd.c
@@ -1807,6 +1807,7 @@
 			if (start_ctrl_iface_bss(hapd) < 0 ||
 			    (hapd_iface->state == HAPD_IFACE_ENABLED &&
 			     hostapd_setup_bss(hapd, -1))) {
+				hapd_iface->bss[hapd_iface->num_bss - 1] = NULL;
 				hapd_iface->conf->num_bss--;
 				hapd_iface->num_bss--;
 				wpa_printf(MSG_DEBUG, "%s: free hapd %p %s",
@@ -1876,14 +1877,17 @@
 		if (hapd_iface->bss) {
 			for (i = 0; i < hapd_iface->num_bss; i++) {
 				hapd = hapd_iface->bss[i];
-				if (hapd && hapd_iface->interfaces &&
+				if (!hapd)
+					continue;
+				if (hapd_iface->interfaces &&
 				    hapd_iface->interfaces->ctrl_iface_deinit)
 					hapd_iface->interfaces->
 						ctrl_iface_deinit(hapd);
 				wpa_printf(MSG_DEBUG, "%s: free hapd %p (%s)",
 					   __func__, hapd_iface->bss[i],
-					hapd_iface->bss[i]->conf->iface);
-				os_free(hapd_iface->bss[i]);
+					   hapd->conf->iface);
+				os_free(hapd);
+				hapd_iface->bss[i] = NULL;
 			}
 			os_free(hapd_iface->bss);
 		}