[Bug 1646064] Re: investigate autopkgtest regressions in 2.24-7ubuntu1

[Rodney Dawes]

The GTK+ thing definitely looks like mesa:

Thread 1 (Thread 0x7ffff7f11ac0 (LWP 13309)):
#0  rawmemchr () at ../sysdeps/x86_64/rawmemchr.S:37
#1  0x00007ffff49f9702 in _IO_str_init_static_internal (
    sf=sf at entry=0x7fffffffdef0, ptr=ptr at entry=0x0, size=size at entry=0, 
    pstart=pstart at entry=0x0) at strops.c:41
#2  0x00007ffff49e6b97 in __GI___isoc99_vsscanf (string=0x0, 
    format=0x7ffff30592f2 "%d.%d", args=args at entry=0x7fffffffe018)
    at isoc99_vsscanf.c:41
#3  0x00007ffff49e6b37 in __isoc99_sscanf (s=<optimized out>, 
    format=<optimized out>) at isoc99_sscanf.c:31
#4  0x00007ffff303bd22 in epoxy_glx_version ()
   from /usr/lib/x86_64-linux-gnu/libepoxy.so.0
#5  0x00007ffff6b2bb49 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#6  0x00007ffff6b2befa in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#7  0x00007ffff6b34ac6 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#8  0x00007ffff6b31b36 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#9  0x00007ffff6b21a48 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0

This is deep inside the gdk_init() path.

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https://bugs.launchpad.net/bugs/1646064

Title:
  investigate autopkgtest regressions in 2.24-7ubuntu1

Status in glibc package in Ubuntu:
  New

Bug description:
  I went through the current http://people.canonical.com/~ubuntu-archive
  /proposed-migration/update_excuses.html#glibc regressions, and these
  packages cannot trivially be excluded to be unrelated, so they need a
  closer look:

  http://autopkgtest.ubuntu.com/packages/a/apt/zesty/i386
  http://autopkgtest.ubuntu.com/packages/g/gnome-color-manager/zesty/armhf
  http://autopkgtest.ubuntu.com/packages/g/gspell/zesty/i386
  http://autopkgtest.ubuntu.com/packages/g/gtk+3.0/zesty/i386 (could also have been introduced by new mesa)
  http://autopkgtest.ubuntu.com/packages/m/mercurial/zesty/i386
  http://autopkgtest.ubuntu.com/packages/w/why/zesty/armhf

  These fail on all architectures, I just picked a random one. Note that
  I killed the majority of the amd64 tests, as we already have enough
  data from the other architectures, and the queue lag became too
  painful.

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