Re: [libvirt] seg fault when running snapshot-create
On Wed, Apr 21, 2010 at 05:16:21PM -0400, Chris Lalancette wrote:
On 04/21/2010 04:34 PM, Stephen Shaw wrote:
> I'm getting a seg fault when running virsh snapshot-create 1, but only
> when virt-manager is open and connected.
>
> Here is some of the debug info I was able to come up with -
> http://fpaste.org/9GO6/ (bt)
> http://fpaste.org/7gkH/ ('thread apply all bt)
>
> * After the crash
> (gdb) p mon->msg
> $1 = (qemuMonitorMessagePtr) 0x0
>
>
> nibbler:~ # libvirtd --version
> libvirtd (libvirt) 0.8.0
>
>
> Please let me know if there is any other information you need.
> Stephen
Thanks for the report. To be perfectly honest, I can't see how what
happened could happen :). But I'll take a closer look at it and see
if I can reproduce and see what is going on with it.
I see thread locking problems in the code
- qemuDomainSnapshotCreateXML() is calling monitor commands, but has
not run qemuDomainObjBeginJobWithDriver() to ensure exclusive
access to the monitor
- qemuDomainSnapshotDiscard has same problem
Daniel
--
|: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :|
|: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|