linux-kernel - [PATCH] hostap: Fix memleak in prism2

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Date:   Mon, 29 Mar 2021 16:52:43 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Jouni Malinen <j@...fi>, Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Leon Romanovsky <leon@...nel.org>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] hostap: Fix memleak in prism2_config

When prism2_hw_config() fails, we just return an error code
without any resource release, which may lead to memleak.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/net/wireless/intersil/hostap/hostap_cs.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wireless/intersil/hostap/hostap_cs.c b/drivers/net/wireless/intersil/hostap/hostap_cs.c
index ec7db2badc40..7dc16ab50ad6 100644
--- a/drivers/net/wireless/intersil/hostap/hostap_cs.c
+++ b/drivers/net/wireless/intersil/hostap/hostap_cs.c
@@ -536,10 +536,10 @@ static int prism2_config(struct pcmcia_device *link)
 	sandisk_enable_wireless(dev);
 
 	ret = prism2_hw_config(dev, 1);
-	if (!ret)
-		ret = hostap_hw_ready(dev);
+	if (ret)
+		goto failed;
 
-	return ret;
+	return hostap_hw_ready(dev);;
 
  failed:
 	kfree(hw_priv);
-- 
2.17.1