diff --git a/net/rds/ib_recv.c b/net/rds/ib_recv.c
index 1a8a4a760b84..a0f99bbf362c 100644
--- a/net/rds/ib_recv.c
+++ b/net/rds/ib_recv.c
@@ -1048,9 +1048,14 @@ int rds_ib_recv_init(void)
 	si_meminfo(&si);
 	rds_ib_sysctl_max_recv_allocation = si.totalram / 3 * PAGE_SIZE / RDS_FRAG_SIZE;
 
-	rds_ib_incoming_slab = kmem_cache_create("rds_ib_incoming",
-					sizeof(struct rds_ib_incoming),
-					0, SLAB_HWCACHE_ALIGN, NULL);
+	rds_ib_incoming_slab =
+		kmem_cache_create_usercopy("rds_ib_incoming",
+					   sizeof(struct rds_ib_incoming),
+					   0, SLAB_HWCACHE_ALIGN,
+					   offsetof(struct rds_ib_incoming,
+						    ii_inc.i_usercopy),
+					   sizeof(struct rds_inc_usercopy),
+					   NULL);
 	if (!rds_ib_incoming_slab)
 		goto out;
 
diff --git a/net/rds/rds.h b/net/rds/rds.h
index ad605fd61655..53e86911773a 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -271,6 +271,12 @@ struct rds_ext_header_rdma_dest {
 #define	RDS_MSG_RX_END		2
 #define	RDS_MSG_RX_CMSG		3
 
+/* The following values are whitelisted for usercopy */
+struct rds_inc_usercopy {
+	rds_rdma_cookie_t	rdma_cookie;
+	ktime_t			rx_tstamp;
+};
+
 struct rds_incoming {
 	refcount_t		i_refcount;
 	struct list_head	i_item;
@@ -280,8 +286,7 @@ struct rds_incoming {
 	unsigned long		i_rx_jiffies;
 	struct in6_addr		i_saddr;
 
-	rds_rdma_cookie_t	i_rdma_cookie;
-	ktime_t			i_rx_tstamp;
+	struct rds_inc_usercopy i_usercopy;
 	u64			i_rx_lat_trace[RDS_RX_MAX_TRACES];
 };
 
diff --git a/net/rds/recv.c b/net/rds/recv.c
index 853de4876088..7e451c82595b 100644
--- a/net/rds/recv.c
+++ b/net/rds/recv.c
@@ -47,8 +47,8 @@ void rds_inc_init(struct rds_incoming *inc, struct rds_connection *conn,
 	INIT_LIST_HEAD(&inc->i_item);
 	inc->i_conn = conn;
 	inc->i_saddr = *saddr;
-	inc->i_rdma_cookie = 0;
-	inc->i_rx_tstamp = ktime_set(0, 0);
+	inc->i_usercopy.rdma_cookie = 0;
+	inc->i_usercopy.rx_tstamp = ktime_set(0, 0);
 
 	memset(inc->i_rx_lat_trace, 0, sizeof(inc->i_rx_lat_trace));
 }
@@ -62,8 +62,8 @@ void rds_inc_path_init(struct rds_incoming *inc, struct rds_conn_path *cp,
 	inc->i_conn = cp->cp_conn;
 	inc->i_conn_path = cp;
 	inc->i_saddr = *saddr;
-	inc->i_rdma_cookie = 0;
-	inc->i_rx_tstamp = ktime_set(0, 0);
+	inc->i_usercopy.rdma_cookie = 0;
+	inc->i_usercopy.rx_tstamp = ktime_set(0, 0);
 }
 EXPORT_SYMBOL_GPL(rds_inc_path_init);
 
@@ -186,7 +186,7 @@ static void rds_recv_incoming_exthdrs(struct rds_incoming *inc, struct rds_sock
 		case RDS_EXTHDR_RDMA_DEST:
 			/* We ignore the size for now. We could stash it
 			 * somewhere and use it for error checking. */
-			inc->i_rdma_cookie = rds_rdma_make_cookie(
+			inc->i_usercopy.rdma_cookie = rds_rdma_make_cookie(
 					be32_to_cpu(buffer.rdma_dest.h_rdma_rkey),
 					be32_to_cpu(buffer.rdma_dest.h_rdma_offset));
 
@@ -380,7 +380,7 @@ void rds_recv_incoming(struct rds_connection *conn, struct in6_addr *saddr,
 				      be32_to_cpu(inc->i_hdr.h_len),
 				      inc->i_hdr.h_dport);
 		if (sock_flag(sk, SOCK_RCVTSTAMP))
-			inc->i_rx_tstamp = ktime_get_real();
+			inc->i_usercopy.rx_tstamp = ktime_get_real();
 		rds_inc_addref(inc);
 		inc->i_rx_lat_trace[RDS_MSG_RX_END] = local_clock();
 		list_add_tail(&inc->i_item, &rs->rs_recv_queue);
@@ -540,16 +540,18 @@ static int rds_cmsg_recv(struct rds_incoming *inc, struct msghdr *msg,
 {
 	int ret = 0;
 
-	if (inc->i_rdma_cookie) {
+	if (inc->i_usercopy.rdma_cookie) {
 		ret = put_cmsg(msg, SOL_RDS, RDS_CMSG_RDMA_DEST,
-				sizeof(inc->i_rdma_cookie), &inc->i_rdma_cookie);
+				sizeof(inc->i_usercopy.rdma_cookie),
+				&inc->i_usercopy.rdma_cookie);
 		if (ret)
 			goto out;
 	}
 
-	if ((inc->i_rx_tstamp != 0) &&
+	if ((inc->i_usercopy.rx_tstamp != 0) &&
 	    sock_flag(rds_rs_to_sk(rs), SOCK_RCVTSTAMP)) {
-		struct __kernel_old_timeval tv = ns_to_kernel_old_timeval(inc->i_rx_tstamp);
+		struct __kernel_old_timeval tv =
+			ns_to_kernel_old_timeval(inc->i_usercopy.rx_tstamp);
 
 		if (!sock_flag(rds_rs_to_sk(rs), SOCK_TSTAMP_NEW)) {
 			ret = put_cmsg(msg, SOL_SOCKET, SO_TIMESTAMP_OLD,