[PATCH] mwifiex: Fix mem leak in mwifiex_tm_cmd

From: Yue Haibing
Date: Tue Mar 12 2019 - 03:04:18 EST


From: YueHaibing <yuehaibing@xxxxxxxxxx>

'hostcmd' is alloced by kzalloc, should be freed before
leaving from the error handling cases, otherwise it will
cause mem leak.

Fixes: 3935ccc14d2c ("mwifiex: add cfg80211 testmode support")
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index c46f0a5..e582d9b 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -4082,16 +4082,20 @@ static int mwifiex_tm_cmd(struct wiphy *wiphy, struct wireless_dev *wdev,

if (mwifiex_send_cmd(priv, 0, 0, 0, hostcmd, true)) {
dev_err(priv->adapter->dev, "Failed to process hostcmd\n");
+ kfree(hostcmd);
return -EFAULT;
}

/* process hostcmd response*/
skb = cfg80211_testmode_alloc_reply_skb(wiphy, hostcmd->len);
- if (!skb)
+ if (!skb) {
+ kfree(hostcmd);
return -ENOMEM;
+ }
err = nla_put(skb, MWIFIEX_TM_ATTR_DATA,
hostcmd->len, hostcmd->cmd);
if (err) {
+ kfree(hostcmd);
kfree_skb(skb);
return -EMSGSIZE;
}
--
2.7.0