Comment # 10 on bug 929806 from Mel Gorman

(In reply to Dominique Leuenberger from comment #9)
> @Mel,
> 
> The link in the original comment to openQA also allows you to get the ISO
> file used for the task.
> 
> https://openqa.opensuse.org/tests/60367 =>
> https://openqa.opensuse.org/tests/60367/asset/3037
> 

Well, I get a duh prize.

I used to ISO and KVM to reproduce this. 1 in 5 installations appear to fail
with a freeze where the UI ceases to interact -- X pointer works, no text can
be selected and the UI cannot be interacted with. Terminal switching still
works and using that I checked what was active.

There were no RPM scripts active or any portion of rpm. tar existed as a zombie
process that was a child of y2base. Even if they were the problem with
packages, the UI would not freeze and besides, it would always be the same
package that froze. The window manager is not threaded so that's not likely to
be the problem. What appears to be frozen is y2base.

I'll now test with MALLOC_CHECK_=2 and see does it freeze but right now, y2base
appears to be the primary candidate as the problem. Martin, would you be able
to or identify someone on the yast team that could run the installer through
valgrind to see if it spits out any warnings about uninitialised memory use and
debug it? Ideally it would be with the devel version of glibc but it's not
strictly necessary as uninitinialised memory use is unconditionally a bug
regardless of system libraries used.