diff --git a/src/tests/vm/mmap-shuffle.ck b/src/tests/vm/mmap-shuffle.ck
new file mode 100644
index 0000000000000000000000000000000000000000..c15830170311a2dc78429351b2f1ef963b30a74e
--- /dev/null
+++ b/src/tests/vm/mmap-shuffle.ck
@@ -0,0 +1,47 @@
+# -*- perl -*-
+use strict;
+use warnings;
+use tests::tests;
+use tests::cksum;
+use tests::lib;
+
+my ($init, @shuffle);
+if (1) {
+    # Use precalculated values.
+    $init = 3115322833;
+    @shuffle = (1691062564, 1973575879, 1647619479, 96566261, 3885786467,
+		3022003332, 3614934266, 2704001777, 735775156, 1864109763);
+} else {
+    # Recalculate values.
+    my ($buf) = "";
+    for my $i (0...128 * 1024 - 1) {
+	$buf .= chr (($i * 257) & 0xff);
+    }
+    $init = cksum ($buf);
+
+    random_init (0);
+    for my $i (1...10) {
+	$buf = shuffle ($buf, length ($buf), 1);
+	push (@shuffle, cksum ($buf));
+    }
+}
+
+check_expected (IGNORE_EXIT_CODES => 1, [<<EOF]);
+(mmap-shuffle) begin
+(mmap-shuffle) create "buffer"
+(mmap-shuffle) open "buffer"
+(mmap-shuffle) mmap "buffer"
+(mmap-shuffle) init: cksum=$init
+(mmap-shuffle) shuffle 0: cksum=$shuffle[0]
+(mmap-shuffle) shuffle 1: cksum=$shuffle[1]
+(mmap-shuffle) shuffle 2: cksum=$shuffle[2]
+(mmap-shuffle) shuffle 3: cksum=$shuffle[3]
+(mmap-shuffle) shuffle 4: cksum=$shuffle[4]
+(mmap-shuffle) shuffle 5: cksum=$shuffle[5]
+(mmap-shuffle) shuffle 6: cksum=$shuffle[6]
+(mmap-shuffle) shuffle 7: cksum=$shuffle[7]
+(mmap-shuffle) shuffle 8: cksum=$shuffle[8]
+(mmap-shuffle) shuffle 9: cksum=$shuffle[9]
+(mmap-shuffle) end
+EOF
+pass;