--- bin/cp/utils.c	2020-09-26 18:15:40.072631000 -0700
+++ bin/cp/utils.c	2020-09-27 17:39:57.404325000 -0700
@@ -77,7 +77,7 @@ __FBSDID("$FreeBSD: head/bin/cp/utils.c 365643 2020-09
 static int
 copy_fallback(int from_fd, int to_fd, char *buf, size_t bufsize)
 {
-	int rcount;
+	ssize_t rcount;
 	ssize_t wresid, wcount = 0;
 	char *bufp;
 
@@ -236,7 +236,7 @@ copy_file(const FTSENT *entp, int dne)
 			do {
 				if (use_copy_file_range) {
 					rcount = copy_file_range(from_fd, NULL,
-			    		    to_fd, NULL, bufsize, 0);
+			    		    to_fd, NULL, SSIZE_MAX, 0);
 					if (rcount < 0 && errno == EINVAL) {
 						/* Prob a non-seekable FD */
 						use_copy_file_range = 0;