1 files changed, 5 insertions, 9 deletions

diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index b03ecf6b2bb0..096250d1323b 100644
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -473,14 +473,9 @@ static int dccp_setsockopt_ccid(struct sock *sk, int type,
         if (optlen < 1 || optlen > DCCP_FEAT_MAX_SP_VALS)
                 return -EINVAL;
 
-        val = kmalloc(optlen, GFP_KERNEL);
-        if (val == NULL)
-                return -ENOMEM;
-
-        if (copy_from_user(val, optval, optlen)) {
-                kfree(val);
-                return -EFAULT;
-        }
+        val = memdup_user(optval, optlen);
+        if (IS_ERR(val))
+                return PTR_ERR(val);
 
         lock_sock(sk);
         if (type == DCCP_SOCKOPT_TX_CCID || type == DCCP_SOCKOPT_CCID)
@@ -1007,7 +1002,8 @@ EXPORT_SYMBOL_GPL(dccp_shutdown);
 static inline int dccp_mib_init(void)
 {
         return snmp_mib_init((void __percpu **)dccp_statistics,
-                             sizeof(struct dccp_mib));
+                             sizeof(struct dccp_mib),
+                             __alignof__(struct dccp_mib));
 }
 
 static inline void dccp_mib_exit(void)