Public bug reported:

== Comment: #0 - William M. Schmidt <wills...@us.ibm.com> - 2019-01-07
16:26:49 ==

---Problem Description---
Valgrind addex instruction emulation broken
 
Contact Information = ca...@us.ibm.com 
 
---uname output---
uname -a output
 
Machine Type = power9 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 Run valgrind against an application built with power9 support.  (GMP)

 
Userspace tool common name: valgrind 

Userspace rpm: valgrind.rpm 
 
The userspace tool has the following bit modes: both 

Userspace tool obtained from project website:  na 
 
*Additional Instructions for ca...@us.ibm.com:
-Attach ltrace and strace of userspace application.

Request an upstream valgrind fix for this addex instruction issue be
backported into the current distro release.

Associated upstream bugzilla is 
https://bugs.kde.org/show_bug.cgi?id=402519

The valgrind commit containing the fix is

commit 2c1f016e634bf79faf45e81c14c955c711bc202f
Author: Mark Wielaard <m...@klomp.org>
Date:   Mon Dec 31 22:26:31 2018 +0100
    Bug 402519 - POWER 3.0 addex instruction incorrectly implemented

** Affects: valgrind (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New


** Tags: architecture-ppc64le bugnameltc-174461 severity-medium 
targetmilestone-inin1904

** Tags added: architecture-ppc64le bugnameltc-174461 severity-medium
targetmilestone-inin1904

** Changed in: ubuntu
     Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage 
(ubuntu-power-triage)

** Package changed: ubuntu => valgrind (Ubuntu)

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https://bugs.launchpad.net/bugs/1811071

Title:
  Ubuntu19.04: valgrind does not properly handle the addex instruction
  (power9)

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