From b1c5d8f7c308633dbfcf19c5928acb1489b84ac9 Mon Sep 17 00:00:00 2001
From: Kevin Lo <kevlo@FreeBSD.org>
Date: Wed, 22 Oct 2014 03:32:27 +0000
Subject: [PATCH] Fix the kernel panic in hostap mode. rvp->beacon_mbuf was
 NULL in run_update_beacon().

PR:	189405
Submitted by:	Gabor Simon <gabor.simon75 at gmail.com>
MFC after:	3 days
---
 sys/dev/usb/wlan/if_run.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sys/dev/usb/wlan/if_run.c b/sys/dev/usb/wlan/if_run.c
index 1451225353b1..d27f33ae6376 100644
--- a/sys/dev/usb/wlan/if_run.c
+++ b/sys/dev/usb/wlan/if_run.c
@@ -4913,6 +4913,12 @@ run_update_beacon(struct ieee80211vap *vap, int item)
 	}
 
 	setbit(rvp->bo.bo_flags, item);
+	if (rvp->beacon_mbuf == NULL) {
+		rvp->beacon_mbuf = ieee80211_beacon_alloc(vap->iv_bss,
+		    &rvp->bo);
+		if (rvp->beacon_mbuf == NULL)
+			return;
+	}
 	ieee80211_beacon_update(vap->iv_bss, &rvp->bo, rvp->beacon_mbuf, mcast);
 
 	i = RUN_CMDQ_GET(&sc->cmdq_store);