| Summary: | libvirtd crash when create/destroy VM repeatedly | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Chris Pelland <cpelland> |
| Component: | libvirt | Assignee: | Michal Privoznik <mprivozn> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 6.5 | CC: | acathrow, dallan, dyuan, eblake, mprivozn, mzhan, pm-eus, tlavigne, ydu, zhwang |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| 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.
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-12-18 09:24:55 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Bug Depends On: | 1030736 | ||
| Bug Blocks: | |||
|
Description
Chris Pelland
2013-12-05 21:14:11 UTC
Moving to POST: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-December/msg00084.html 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. 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 |