[Bug 1708635] Re: Valgrind reports " Uninitialised value was created by a stack allocation" in __uuid_generate_random

[Dimitri John Ledkov]

Hi,

Please provide minimal example of how to reproduce this. Ideally without
the CI - as I see it tries to setup ccache / clang etc. And I'm not sure
if all of that is relevant.

You mention an older kernel, what kernel is that? I would have thought a
reasonable kernel to test on, is latest xenial-security kernel.

Instead of uploading fixes to util-linux, ideally an upstream bug report
/ pull request is open about the issue with as much details as possible.

Regards,

Dimitri.

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https://bugs.launchpad.net/bugs/1708635

Title:
  Valgrind reports " Uninitialised value was created by a stack
  allocation" in  __uuid_generate_random

Status in util-linux package in Ubuntu:
  New

Bug description:
  This has shown up in lp:mir CI on Artful amd64 (and no other
  architecture or series we're using)

  For example:

  https://mir-jenkins.ubuntu.com/job/build-2-binpkg-
  mir/arch=amd64,compiler=gcc,platform=mesa,release=artful/4870/consoleFull

  Marking the memory with VALGRIND_MAKE_MEM_DEFINED() suppresses the
  error.

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