netdev - [PATCH] net: Use kmemdup instead of kmalloc and memcpy

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Message-Id: <1482520498-28259-1-git-send-email-mayhs11saini@gmail.com>
Date:   Sat, 24 Dec 2016 00:44:58 +0530
From:   Shyam Saini <mayhs11saini@...il.com>
To:     mst@...hat.com
Cc:     jasowang@...hat.com, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, Shyam Saini <mayhs11saini@...il.com>
Subject: [PATCH] net: Use kmemdup instead of kmalloc and memcpy

when some other buffer is immediately copied into allocated region.
Replace calls to kmalloc followed by a memcpy with a direct
call to kmemdup.

Signed-off-by: Shyam Saini <mayhs11saini@...il.com>
---
 drivers/net/virtio_net.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index ba1aa24..dde4bc4 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1206,10 +1206,9 @@ static int virtnet_set_mac_address(struct net_device *dev, void *p)
 	struct sockaddr *addr;
 	struct scatterlist sg;
 
-	addr = kmalloc(sizeof(*addr), GFP_KERNEL);
+	addr = kmemdup(p, sizeof(*addr), GFP_KERNEL);
 	if (!addr)
 		return -ENOMEM;
-	memcpy(addr, p, sizeof(*addr));
 
 	ret = eth_prepare_mac_addr_change(dev, addr);
 	if (ret)
-- 
2.7.4