net/xfrm: use kmemdup rather than duplicating its implementation

The patch was generated using fixed coccinelle semantic patch
scripts/coccinelle/api/memdup.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2014320

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 0cebf1fc37a2..a8de9e300200 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -925,12 +925,10 @@ static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
                         return err;
 
                 if (attrs[XFRMA_ADDRESS_FILTER]) {
-                        filter = kmalloc(sizeof(*filter), GFP_KERNEL);
+                        filter = kmemdup(nla_data(attrs[XFRMA_ADDRESS_FILTER]),
+                                         sizeof(*filter), GFP_KERNEL);
                         if (filter == NULL)
                                 return -ENOMEM;
-
-                        memcpy(filter, nla_data(attrs[XFRMA_ADDRESS_FILTER]),
-                               sizeof(*filter));
                 }
 
                 if (attrs[XFRMA_PROTO])