Patched MemTest86+ v5.1

README.md

Here is a MemTest86+ v5.1 as shipped in Ubuntu, built with a patch from http://forum.canardpc.com/threads/117454-PATCH-Fix-for-Freeze-on-test-7-in-SMP-mode.

See https://habr.com/ru/post/484026/#comment_21171394.

$ apt-src install memtest86+
$ cp memtest86+
$ patch -p1 --ignore-whitespace < ../memtest.patch
$ dpkg-buildpackage --build=binary
$ cp debian/memtest86+/boot/* ..

memtest.patch

From http://forum.canardpc.com/threads/117454-PATCH-Fix-for-Freeze-on-test-7-in-SMP-mode

---

--- a/test.c
+++ b/test.c
@@ -1202,7 +1202,7 @@ void block_move(int iter, int me)
             } else {
                 pe = end;
             }
-            if (pe >= end) {
+            if ((pe >= end && end != 0) || (pe < p && end == 0)) {
                 pe = end;
                 done++;
             }
@@ -1280,7 +1280,7 @@ void block_move(int iter, int me)
             } else {
                 pe = end;
             }
-            if (pe >= end) {
+            if ((pe >= end && end != 0) || (pe < p && end == 0)) {
                 pe = end;
                 done++;
             }
@@ -1359,7 +1359,7 @@ void block_move(int iter, int me)
             } else {
                 pe = end;
             }
-            if (pe >= end) {
+            if ((pe >= end && end != 0) || (pe < p && end == 0)) {
                 pe = end;
                 done++;
             }

memtest86+.bin

memtest86+.elf

memtest86+_multiboot.bin