diff --git a/net/can/raw.c b/net/can/raw.c
index ead50c7c0d40f54e8b05d7b1c9e04cdef5b92fb2..201cbfc6b9ece724b3cda9427f27d976534567c7 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -573,7 +573,8 @@ static int raw_getsockopt(struct socket *sock, int level, int optname,
 			int fsize = ro->count * sizeof(struct can_filter);
 			if (len > fsize)
 				len = fsize;
-			err = copy_to_user(optval, ro->filter, len);
+			if (copy_to_user(optval, ro->filter, len))
+				err = -EFAULT;
 		} else
 			len = 0;
 		release_sock(sk);
diff --git a/net/dccp/probe.c b/net/dccp/probe.c
index 6e1df62bd7c9167dc6e123b20c5af79ce30537c3..0bcdc92502794867b7254bc338044555b6493245 100644
--- a/net/dccp/probe.c
+++ b/net/dccp/probe.c
@@ -140,7 +140,7 @@ static ssize_t dccpprobe_read(struct file *file, char __user *buf,
 		goto out_free;
 
 	cnt = kfifo_get(dccpw.fifo, tbuf, len);
-	error = copy_to_user(buf, tbuf, cnt);
+	error = copy_to_user(buf, tbuf, cnt) ? -EFAULT : 0;
 
 out_free:
 	vfree(tbuf);
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 05853159536a03b984708c400808dcf6e26fcb77..230f9ca2ad6b361dd4e78e6a2f1247334e9b9d22 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -1756,8 +1756,8 @@ static int getsockopt(struct socket *sock,
 	else if (len < sizeof(value)) {
 		res = -EINVAL;
 	}
-	else if ((res = copy_to_user(ov, &value, sizeof(value)))) {
-		/* couldn't return value */
+	else if (copy_to_user(ov, &value, sizeof(value))) {
+		res = -EFAULT;
 	}
 	else {
 		res = put_user(sizeof(value), ol);