[Bug 1638982] Re: libvirtd randomly crashes on xenial nodes with "realloc(): invalid next size"

2017-08-04 Thread Clark Boylan
It should be noted that after switching to using Ubuntu Cloud Archive
which includes newer libvirt this issue went away in the gate.

** Changed in: openstack-gate
   Status: Confirmed => Fix Released

** Changed in: openstack-gate
   Importance: Undecided => Medium

** Changed in: openstack-gate
 Assignee: (unassigned) => Clark Boylan (cboylan)

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Title:
  libvirtd randomly crashes on xenial nodes with "realloc(): invalid
  next size"

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[Bug 1638982] Re: libvirtd randomly crashes on xenial nodes with "realloc(): invalid next size"

2017-06-11 Thread Launchpad Bug Tracker
Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: libvirt (Ubuntu)
   Status: New => Confirmed

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Title:
  libvirtd randomly crashes on xenial nodes with "realloc(): invalid
  next size"

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[Bug 1638982] Re: libvirtd randomly crashes on xenial nodes with "realloc(): invalid next size"

2017-04-04 Thread ChristianEhrhardt
Hi (cross post I know),
there is a bit of a "somewhat dup" context around the list of the following 
bugs:
- bug 1646779
- bug 1643911
- bug 1638982
- bug 1673483

Unfortunately, I’ve never hit these bugs in any of my libvirt/qemu runs
and these are literally thousands every day due to all the automated
tests. I also checked with our Ubuntu OpenStack Team and they didn't see
them so far either. That makes it hard to debug them in depth as you
will all understand.

But while the “signature” on each bug is different, they share a lot of things 
still (lets call it the bug "meta signature"):
- there is no way to recreate yet other than watching gate test crash statistics
- they seem to haunt the openstack gate testing more than anything else
- most are directly or indirectly related to memory corruption

As I’m unable to reproduce any of these bugs myself, I’d like to get
some help from anyone that can help to recreate. Therefore I ask all
people affected (mostly the same on all these bugs anyway) to test the
PPAs I created for bug 1673483. That is the one bug where thanks to the
great help of Kashyp, Matt and Dan (and more) at least a potential fix
was identified.

That means two ppa's for you to try:
- Backport of the minimal recommended fix: 
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/2620
- Backport of the full series of related fixes: 
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/2619

Especially since the potential error of these fixes refers to almost
anything from memleak to deadlock there is a chance that they all might
be caused by the same root cause.

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Title:
  libvirtd randomly crashes on xenial nodes with "realloc(): invalid
  next size"

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[Bug 1638982] Re: libvirtd randomly crashes on xenial nodes with "realloc(): invalid next size"

2017-02-02 Thread ChristianEhrhardt
I don't know why I got a notification of this today ?!, but well here I
am looking at it.

I've found bugs like that (The signatures only slightly differ) reported very 
sporadically back til 2011. So it seems a long standing bug at least the 
overall exit path (might have different root causes).
But it was never reproducible enough.

Seeing 16 occurrences last week in your Kibana seems to be closer to
reproduce than ever.

Yet I wanted to write what is needed and in terms of 
progress-already-being-made I found another bug which covered more or less what 
I wanted to write.
Therefore I wanted to ask - is this a dup of 1643911?

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Title:
  libvirtd randomly crashes on xenial nodes with "realloc(): invalid
  next size"

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[Bug 1638982] Re: libvirtd randomly crashes on xenial nodes with "realloc(): invalid next size"

2017-02-02 Thread Jakub Libosvar
** Also affects: libvirt (Ubuntu)
   Importance: Undecided
   Status: New

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Title:
  libvirtd randomly crashes on xenial nodes with "realloc(): invalid
  next size"

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