netdev - [PATCH net] cosa: Add missing kfree in error path of cosa

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Message-ID: <20201110144614.43194-1-wanghai38@huawei.com>
Date:   Tue, 10 Nov 2020 22:46:14 +0800
From:   Wang Hai <wanghai38@...wei.com>
To:     <davem@...emloft.net>, <kas@...muni.cz>, <kuba@...nel.org>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] cosa: Add missing kfree in error path of cosa_write

If memory allocation for 'kbuf' succeed, cosa_write() doesn't have a
corresponding kfree() in exception handling. Thus add kfree() for this
function implementation.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Wang Hai <wanghai38@...wei.com>
---
 drivers/net/wan/cosa.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
index f8aed0696d77..2369ca250cd6 100644
--- a/drivers/net/wan/cosa.c
+++ b/drivers/net/wan/cosa.c
@@ -889,6 +889,7 @@ static ssize_t cosa_write(struct file *file,
 			chan->tx_status = 1;
 			spin_unlock_irqrestore(&cosa->lock, flags);
 			up(&chan->wsem);
+			kfree(kbuf);
 			return -ERESTARTSYS;
 		}
 	}
-- 
2.17.1