Bug 1038816 - libvirtd crash when create/destroy VM repeatedly
Summary: libvirtd crash when create/destroy VM repeatedly
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.5
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: rc
: ---
Assignee: Michal Privoznik
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1030736
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-12-05 21:14 UTC by Chris Pelland
Modified: 2013-12-18 09:24 UTC (History)
10 users (show)

Fixed In Version: libvirt-0.10.2-29.el6_5.2
Doc Type: Bug Fix
Doc Text:
Cause: Two threads are working over the same domain. In fact, one is starting it, the other one is trying to destroy it. However, there is a race which can cause a domain to disappear in both threads leaving the start daemon access free()d memory. Consequence: The daemon crashes. Fix: The critical section was guarded by incrementing the reference counter of the domain. So whenver the domain is destroyed, the startup thread still holds the last reference which gets decremented once the startup process finishes. Result: The daemon crashes no more.
Clone Of:
Environment:
Last Closed: 2013-12-18 09:24:55 UTC
Target Upstream Version:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2013:1856 0 normal SHIPPED_LIVE libvirt bug fix update 2013-12-18 14:24:00 UTC

Description Chris Pelland 2013-12-05 21:14:11 UTC 
This bug has been copied from bug #1030736 and has been proposed
to be backported to 6.5 z-stream (EUS).
Comment 4 Michal Privoznik 2013-12-06 07:54:51 UTC 
Moving to POST:

http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-December/msg00084.html
Comment 7 yanbing du 2013-12-12 07:00:25 UTC 
Verify this bug with libvirt-0.10.2-29.el6_5.2.x86_64.

Run the following commands:

   while /bin/true ; do virsh create demovm.xml ; virsh destroy demovm ; done

in 3 separate terminal windows.

After more than 10 mins, libvirtd still running and there's no orphaned QEMU process appear.
Comment 9 errata-xmlrpc 2013-12-18 09:24:55 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-1856.html
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