diff --git a/net/ax25/ax25_in.c b/net/ax25/ax25_in.c
index 31c59387a6fc..0ddaff0df217 100644
--- a/net/ax25/ax25_in.c
+++ b/net/ax25/ax25_in.c
@@ -66,7 +66,9 @@ static int ax25_rx_fragment(ax25_cb *ax25, struct sk_buff *skb)
 
 					/* Copy data from the fragments */
 					while ((skbo = skb_dequeue(&ax25->frag_queue)) != NULL) {
-						memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
+						skb_copy_from_linear_data(skbo,
+							  skb_put(skbn, skbo->len),
+									  skbo->len);
 						kfree_skb(skbo);
 					}
 
diff --git a/net/decnet/netfilter/dn_rtmsg.c b/net/decnet/netfilter/dn_rtmsg.c
index 9e8256a2361e..2ee47bab6938 100644
--- a/net/decnet/netfilter/dn_rtmsg.c
+++ b/net/decnet/netfilter/dn_rtmsg.c
@@ -48,7 +48,7 @@ static struct sk_buff *dnrmg_build_message(struct sk_buff *rt_skb, int *errp)
 	rtm = (struct nf_dn_rtmsg *)NLMSG_DATA(nlh);
 	rtm->nfdn_ifindex = rt_skb->dev->ifindex;
 	ptr = NFDN_RTMSG(rtm);
-	memcpy(ptr, rt_skb->data, rt_skb->len);
+	skb_copy_from_linear_data(rt_skb, ptr, rt_skb->len);
 	nlh->nlmsg_len = skb->tail - old_tail;
 	return skb;
 
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index c22cdcd84320..94d9f0c63682 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1645,7 +1645,9 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *skb, int m
 		/* Ok.	We will be able to collapse the packet. */
 		tcp_unlink_write_queue(next_skb, sk);
 
-		memcpy(skb_put(skb, next_skb_size), next_skb->data, next_skb_size);
+		skb_copy_from_linear_data(next_skb,
+					  skb_put(skb, next_skb_size),
+					  next_skb_size);
 
 		if (next_skb->ip_summed == CHECKSUM_PARTIAL)
 			skb->ip_summed = CHECKSUM_PARTIAL;
diff --git a/net/netrom/nr_in.c b/net/netrom/nr_in.c
index e6dc749e14be..68176483617f 100644
--- a/net/netrom/nr_in.c
+++ b/net/netrom/nr_in.c
@@ -54,7 +54,9 @@ static int nr_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
 		skb_reset_transport_header(skbn);
 
 		while ((skbo = skb_dequeue(&nr->frag_queue)) != NULL) {
-			memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
+			skb_copy_from_linear_data(skbo,
+						  skb_put(skbn, skbo->len),
+						  skbo->len);
 			kfree_skb(skbo);
 		}
 
diff --git a/net/x25/x25_in.c b/net/x25/x25_in.c
index ba13248aa1c3..1c88762c2794 100644
--- a/net/x25/x25_in.c
+++ b/net/x25/x25_in.c
@@ -56,14 +56,17 @@ static int x25_queue_rx_frame(struct sock *sk, struct sk_buff *skb, int more)
 		skb_reset_transport_header(skbn);
 
 		skbo = skb_dequeue(&x25->fragment_queue);
-		memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
+		skb_copy_from_linear_data(skbo, skb_put(skbn, skbo->len),
+					  skbo->len);
 		kfree_skb(skbo);
 
 		while ((skbo =
 			skb_dequeue(&x25->fragment_queue)) != NULL) {
 			skb_pull(skbo, (x25->neighbour->extended) ?
 					X25_EXT_MIN_LEN : X25_STD_MIN_LEN);
-			memcpy(skb_put(skbn, skbo->len), skbo->data, skbo->len);
+			skb_copy_from_linear_data(skbo,
+						  skb_put(skbn, skbo->len),
+						  skbo->len);
 			kfree_skb(skbo);
 		}