linux-kernel - [PATCH] Staging: rtl8188eu: rtw_mlme: Fix uninitialized variable authmode

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Message-Id: <20200724122957.30411-1-dinghao.liu@zju.edu.cn>
Date:   Fri, 24 Jul 2020 20:29:55 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shreeya Patel <shreeya.patel23498@...il.com>,
        Julia Lawall <julia.lawall@...ia.fr>,
        Michael Straube <straube.linux@...il.com>,
        Stefano Brivio <sbrivio@...hat.com>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Staging: rtl8188eu: rtw_mlme: Fix uninitialized variable authmode

The variable authmode will keep uninitialized if neither if
statements used to initialize this variable are not triggered.
Then authmode may contain a garbage value and influence the
execution flow of this function.

Fix this by initializing it to zero.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/staging/rtl8188eu/core/rtw_mlme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8188eu/core/rtw_mlme.c b/drivers/staging/rtl8188eu/core/rtw_mlme.c
index 9de2d421f6b1..716f8d8a5c13 100644
--- a/drivers/staging/rtl8188eu/core/rtw_mlme.c
+++ b/drivers/staging/rtl8188eu/core/rtw_mlme.c
@@ -1711,7 +1711,7 @@ static int rtw_append_pmkid(struct adapter *Adapter, int iEntry, u8 *ie, uint ie
 
 int rtw_restruct_sec_ie(struct adapter *adapter, u8 *in_ie, u8 *out_ie, uint in_len)
 {
-	u8 authmode;
+	u8 authmode = 0;
 	uint ielength;
 	int iEntry;
 	struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
-- 
2.17.1