diff -ur vsock-only.orig/linux/af_vsock.c vsock-only/linux/af_vsock.c
--- vsock-only.orig/linux/af_vsock.c	2015-02-21 18:09:14.147266976 +0100
+++ vsock-only/linux/af_vsock.c	2015-02-21 18:14:07.134285068 +0100
@@ -233,13 +233,13 @@
                                      char __user *optval, int __user * optlen);
 
 static int VSockVmciDgramSendmsg(struct kiocb *kiocb,
-                                 struct socket *sock, struct msghdr *msg, size_t len);
+                                 struct socket *sock, struct user_msghdr *msg, size_t len);
 static int VSockVmciDgramRecvmsg(struct kiocb *kiocb, struct socket *sock,
-                                 struct msghdr *msg, size_t len, int flags);
+                                 struct user_msghdr *msg, size_t len, int flags);
 static int VSockVmciStreamSendmsg(struct kiocb *kiocb,
-                                 struct socket *sock, struct msghdr *msg, size_t len);
+                                 struct socket *sock, struct user_msghdr *msg, size_t len);
 static int VSockVmciStreamRecvmsg(struct kiocb *kiocb, struct socket *sock,
-                                 struct msghdr *msg, size_t len, int flags);
+                                 struct user_msghdr *msg, size_t len, int flags);
 
 static int VSockVmciCreate(
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
@@ -4195,7 +4195,7 @@
 static int
 VSockVmciDgramSendmsg(struct kiocb *kiocb,          // UNUSED
                       struct socket *sock,          // IN: socket to send on
-                      struct msghdr *msg,           // IN: message to send
+                      struct user_msghdr *msg,           // IN: message to send
                       size_t len)                   // IN: length of message
 {
    int err;
@@ -4525,7 +4525,7 @@
 static int
 VSockVmciStreamSendmsg(struct kiocb *kiocb,          // UNUSED
                        struct socket *sock,          // IN: socket to send on
-                       struct msghdr *msg,           // IN: message to send
+                       struct user_msghdr *msg,           // IN: message to send
                        size_t len)                   // IN: length of message
 {
    struct sock *sk;
@@ -4694,7 +4694,7 @@
 static int
 VSockVmciDgramRecvmsg(struct kiocb *kiocb,          // UNUSED
                       struct socket *sock,          // IN: socket to receive from
-                      struct msghdr *msg,           // IN/OUT: message to receive into
+                      struct user_msghdr *msg,           // IN/OUT: message to receive into
                       size_t len,                   // IN: length of receive buffer
                       int flags)                    // IN: receive flags
 {
@@ -4704,6 +4704,7 @@
    VMCIDatagram *dg;
    size_t payloadLen;
    struct sk_buff *skb;
+   struct iov_iter to;
 
    sk = sock->sk;
    noblock = flags & MSG_DONTWAIT;
@@ -4742,7 +4743,8 @@
    }
 
    /* Place the datagram payload in the user's iovec. */
-   err = skb_copy_datagram_iovec(skb, sizeof *dg, msg->msg_iov, payloadLen);
+   iov_iter_init(&to, READ, msg->msg_iov, 1, payloadLen);
+   err = skb_copy_datagram_iter(skb, sizeof *dg, &to, payloadLen);
    if (err) {
       goto out;
    }
@@ -4785,7 +4787,7 @@
 static int
 VSockVmciStreamRecvmsg(struct kiocb *kiocb,          // UNUSED
                        struct socket *sock,          // IN: socket to receive from
-                       struct msghdr *msg,           // IN/OUT: message to receive into
+                       struct user_msghdr *msg,           // IN/OUT: message to receive into
                        size_t len,                   // IN: length of receive buffer
                        int flags)                    // IN: receive flags
 {