netdev - [PATCH] mac80211_hwsim: fix a possible memory leak in hwsim_new_radio

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Message-ID: <20180424030835.21776-1-yuehaibing@huawei.com>
Date:   Tue, 24 Apr 2018 11:08:35 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <johannes@...solutions.net>
CC:     <netdev@...r.kernel.org>, <kvalo@...eaurora.org>,
        <linux-wireless@...r.kernel.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] mac80211_hwsim: fix a possible memory leak in hwsim_new_radio_nl()

'hwname' should be freed before leaving from the error handling cases,
otherwise it will cause mem leak

Fixes: cb1a5bae5684 ("mac80211_hwsim: add permanent mac address option for new radios")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/net/wireless/mac80211_hwsim.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 96d26cf..4a017a0 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3236,6 +3236,7 @@ static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
 			GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
 			NL_SET_BAD_ATTR(info->extack,
 					info->attrs[HWSIM_ATTR_PERM_ADDR]);
+			kfree(hwname);
 			return -EINVAL;
 		}
 
-- 
2.7.0