From: Kumar Amit Mehta <gmate.amit@gmail.com>
Date: Mon, 26 Jan 2015 15:39:14 +0000 (+0100)
Subject: staging: rtl8188eu: core: rtw_wlan_util.c: Fix for NULL dereference
X-Git-Tag: v4.0-rc1~82^2~134
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0137f1a019952f955f4050495be6725a5f92eb5b;p=karo-tx-linux.git

staging: rtl8188eu: core: rtw_wlan_util.c: Fix for NULL dereference

In rtw_check_bcn_info(), check the return value of kzalloc() before
dereferencing it, to avoid NULL pointer dereference.

Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
index 3e9b6e932641..a3ffc691be9a 100644
--- a/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
+++ b/drivers/staging/rtl8188eu/core/rtw_wlan_util.c
@@ -931,6 +931,8 @@ int rtw_check_bcn_info(struct adapter  *Adapter, u8 *pframe, u32 packet_len)
 	}
 
 	bssid = kzalloc(sizeof(struct wlan_bssid_ex), GFP_ATOMIC);
+	if (!bssid)
+		return _FAIL;
 
 	subtype = GetFrameSubType(pframe) >> 4;