[Bug 1876157] Re: Memtest86+ in Ubuntu 20.04 doesn't work, switch to Coreboot branch or package new release v5.31b is available since 12/04/2020

[Mantas Kriaučiūnas]

Lionel Debroux <lionel_debroux at yahoo.fr> told at http://bugs.debian.org/943752
Date: Tue, 18 Jan 2022 23:08:44 +0100

https://github.com/anphsw/memtest86 is another memtest86+ fork which contains some interesting changes. Unlike both upstream and coreboot's fork:
* in dmi.c, it's not affected by https://bugs.debian.org/1003906 , and it contains updated DMI struct definitions;
* in spd.c, struct pci_smbus_controller smbcontrollers[] contains ~30 additional entries for Intel hardware;
* in main.c and test.c, it has new latency analysis and Rowhammer tests;
* etc.

In config.h and lib.c , both forks have support for 4 serial ports, up
from 2.

On its side, the coreboot fork integrates multiboot changes, embeds a
much newer and larger JEDEC ID list than both upstream and anphsw's
fork, etc.

Lastly, unlike both forks, upstream 5.31b has DDR5 entries in dmi.c's
static char *memory_types[], a number of typo fixes, the beginning of a
user-space unit test program for memtest86+ (which could be used as a
starting point for fuzzing the DMI, SPD, ACPI, etc. parsing functions).

It's a mess :)

PS: I used the following mechanical changes to clean up a bit the large
diffs between memtest86+ 5.31b and the anphsw / coreboot forks:

perl -pi -e "s/v->/vv->/g" *
perl -pi -e "s/isdigit/mt86_isdigit/g" *
perl -pi -e "s/memcmp/mt86_memcmp/g" *
perl -pi -e "s/memmove/mt86_memmove/g" *
perl -pi -e "s/strncmp/mt86_strncmp/g" *
perl -pi -e "s/strstr/mt86_strstr/g" *
perl -pi -e "s/strlen/mt86_strlen/g" *
perl -pi -e "s/error\(/mt86_error(/g" *
perl -pi -e "s/print_mt86_error/print_error/g" *
+ 1 manual edition to test.h for renaming v to vv

Many whitespace changes still appear in those diffs, despite passing the
-b or -w flags to `diff`.

** Bug watch added: Debian Bug tracker #1003906
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1003906

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https://bugs.launchpad.net/bugs/1876157

Title:
  Memtest86+ in Ubuntu 20.04 doesn't work, switch to Coreboot branch or
  package new release v5.31b is available since 12/04/2020

Status in memtest86+ package in Ubuntu:
  Confirmed
Status in memtest86+ package in Baltix:
  Triaged
Status in memtest86+ package in Debian:
  Fix Released

Bug description:
  Memtest in Ubuntu is very old, not updated since 2013, new Memtest86+
  release v5.31b is available at http://memtest.org , dated 12/04/2020

  *** Enhancements in v5.31b : ***
  I've started compiling many codes branches to release public builds again! Here is Memtest86+ 5.31b, with many bug fixes in the core functions.

  Also there is updated Memtest86+ branch at https://www.coreboot.org/Memtest86%2B - several people told, that this branch does work, where original Memtest 5.01 doesn't, see
  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=943752

  ---- Original bugreport ----
  I ran it twice, and both times it hung at exactly 79% in the first test. Even fail safe mode hung exactly at that point.

  Then I booted with the floppy image from memtest86+-4.10.floppy.zip
  and it worked fine.

  Today I installed memtest86+_5.01-3ubuntu2_amd64.deb from Ubuntu 19.10
  and that worked fine too.

  The failing version is 5.01-3.1ubuntu1.

  Memory configuration is 2 * 2 GB (F2-6400CL5-2GBPQ) and 2 * 1 GB
  (OCZ2G8001G) working in dual channel mode. CPU is Harpertown Xeon
  X5470 running at stock speed (3.33 GHz).

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: memtest86+ 5.01-3.1ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
  Uname: Linux 5.4.0-28-generic x86_64
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: XFCE
  Date: Thu Apr 30 13:51:01 2020
  SourcePackage: memtest86+
  UpgradeStatus: Upgraded to focal on 2020-04-06 (24 days ago)

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