From: Jouni Malinen <jouni.malinen@atheros.com>
Date: Wed, 20 Oct 2010 16:30:55 +0000 (+0300)
Subject: Fix crash on channel list changed event during driver init
X-Git-Tag: hostap-1-bp~945
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35c5d6103729530763662137952070258237976c;p=thirdparty%2Fhostap.git

Fix crash on channel list changed event during driver init

The driver wrapper may indicate EVENT_CHANNEL_LIST_CHANGED before
completing init(). This would likely result in segfault when driver
channel list is being read as part of processing this event when
P2P is enabled.
---

diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c
index a4ee308a3..de030d253 100644
--- a/wpa_supplicant/events.c
+++ b/wpa_supplicant/events.c
@@ -1833,6 +1833,8 @@ void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
 		wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
 		break;
 	case EVENT_CHANNEL_LIST_CHANGED:
+		if (wpa_s->drv_priv == NULL)
+			break; /* Ignore event during drv initialization */
 #ifdef CONFIG_P2P
 		wpas_p2p_update_channel_list(wpa_s);
 #endif /* CONFIG_P2P */