ipv6: sr: Use kmemdup instead of duplicating it in parse_nla_srh

Replace calls to kmalloc followed by a memcpy with a direct call to
kmemdup.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c
index cd6e4ca..e1025b4 100644 (file)
--- a/net/ipv6/seg6_local.c
+++ b/net/ipv6/seg6_local.c
@@ -637,12 +637,10 @@ static int parse_nla_srh(struct nlattr **attrs, struct seg6_local_lwt *slwt)
        if (!seg6_validate_srh(srh, len))
                return -EINVAL;
 
-       slwt->srh = kmalloc(len, GFP_KERNEL);
+       slwt->srh = kmemdup(srh, len, GFP_KERNEL);
        if (!slwt->srh)
                return -ENOMEM;
 
-       memcpy(slwt->srh, srh, len);
-
        slwt->headroom += len;
 
        return 0;