diff -Nru stress-ng-0.13.02/debian/changelog stress-ng-0.13.03/debian/changelog
--- stress-ng-0.13.02/debian/changelog	2021-09-14 13:14:14.000000000 +0000
+++ stress-ng-0.13.03/debian/changelog	2021-09-17 11:33:12.000000000 +0000
@@ -1,3 +1,10 @@
+stress-ng (0.13.03-1) unstable; urgency=medium
+
+  * Makefile: bump version
+  * stress-remap: Fix build failure on systems without MAP_POPULATE
+
+ -- Colin King <colin.king@canonical.com>  Fri, 17 Sep 2021 12:33:12 +0100
+
 stress-ng (0.13.02-1) unstable; urgency=medium
 
   [Fabien Malfoy]
diff -Nru stress-ng-0.13.02/Makefile stress-ng-0.13.03/Makefile
--- stress-ng-0.13.02/Makefile	2021-09-14 13:15:13.000000000 +0000
+++ stress-ng-0.13.03/Makefile	2021-09-17 11:34:07.000000000 +0000
@@ -16,7 +16,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 #
 
-VERSION=0.13.02
+VERSION=0.13.03
 #
 # Codename "moonwalking space whale"
 #
diff -Nru stress-ng-0.13.02/stress-mremap.c stress-ng-0.13.03/stress-mremap.c
--- stress-ng-0.13.02/stress-mremap.c	2021-09-14 13:15:13.000000000 +0000
+++ stress-ng-0.13.03/stress-mremap.c	2021-09-17 11:34:08.000000000 +0000
@@ -67,8 +67,12 @@
 static inline void *rand_mremap_addr(const size_t sz, int flags)
 {
 	void *addr;
+	int mask = MREMAP_FIXED | MAP_SHARED;
 
-	flags &= ~(MREMAP_FIXED | MAP_SHARED | MAP_POPULATE);
+#if defined(MAP_POPULATE)
+	mask |= MAP_POPULATE;
+#endif
+	flags &= ~(mask);
 	flags |= (MAP_PRIVATE | MAP_ANONYMOUS);
 
 	addr = mmap(NULL, sz, PROT_READ | PROT_WRITE, flags, -1, 0);