linux-kernel - [PATCH 5.16 0227/1039] staging: rtl8192e: rtllib_module: fix error handle case in alloc

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Date:   Mon, 24 Jan 2022 19:33:36 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Pavel Skripkin <paskripkin@...il.com>,
        Yang Yingliang <yangyingliang@...wei.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 0227/1039] staging: rtl8192e: rtllib_module: fix error handle case in alloc_rtllib()

From: Yang Yingliang <yangyingliang@...wei.com>

[ Upstream commit e730cd57ac2dfe94bca0f14a3be8e1b21de41a9c ]

Some variables are leaked in the error handling in alloc_rtllib(), free
the variables in the error path.

Fixes: 94a799425eee ("From: wlanfae <wlanfae@...ltek.com>")
Reviewed-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Pavel Skripkin <paskripkin@...il.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
Link: https://lore.kernel.org/r/20211202030704.2425621-3-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/staging/rtl8192e/rtllib_module.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtllib_module.c b/drivers/staging/rtl8192e/rtllib_module.c
index 64d9feee1f392..f00ac94b2639b 100644
--- a/drivers/staging/rtl8192e/rtllib_module.c
+++ b/drivers/staging/rtl8192e/rtllib_module.c
@@ -88,7 +88,7 @@ struct net_device *alloc_rtllib(int sizeof_priv)
 	err = rtllib_networks_allocate(ieee);
 	if (err) {
 		pr_err("Unable to allocate beacon storage: %d\n", err);
-		goto failed;
+		goto free_netdev;
 	}
 	rtllib_networks_initialize(ieee);
 
@@ -121,11 +121,13 @@ struct net_device *alloc_rtllib(int sizeof_priv)
 	ieee->hwsec_active = 0;
 
 	memset(ieee->swcamtable, 0, sizeof(struct sw_cam_table) * 32);
-	rtllib_softmac_init(ieee);
+	err = rtllib_softmac_init(ieee);
+	if (err)
+		goto free_crypt_info;
 
 	ieee->pHTInfo = kzalloc(sizeof(struct rt_hi_throughput), GFP_KERNEL);
 	if (!ieee->pHTInfo)
-		return NULL;
+		goto free_softmac;
 
 	HTUpdateDefaultSetting(ieee);
 	HTInitializeHTInfo(ieee);
@@ -141,8 +143,14 @@ struct net_device *alloc_rtllib(int sizeof_priv)
 
 	return dev;
 
- failed:
+free_softmac:
+	rtllib_softmac_free(ieee);
+free_crypt_info:
+	lib80211_crypt_info_free(&ieee->crypt_info);
+	rtllib_networks_free(ieee);
+free_netdev:
 	free_netdev(dev);
+
 	return NULL;
 }
 EXPORT_SYMBOL(alloc_rtllib);
-- 
2.34.1