Red Hat Bugzilla – Bug 1006710
domain with auto numatune placement and a nodeset specified crashes libvirtd
Last modified: 2013-11-21 04:10:46 EST
Description of problem: The nodeset bitmap was freed when placement was auto, but the pointer wasn't set to NULL, leading to a double free when freeing the domain definition. Version-Release number of selected component (if applicable): libvirt-0.10.2-18.el6 Steps to Reproduce: 1. virsh define /dev/stdin <<EOF <domain type='qemu'> <name>duck</name> <memory unit='MiB'>32</memory> <numatune> <memory mode='preferred' placement='auto' nodeset='0'/> </numatune> <os> <type arch='x86_64' machine='pc'>hvm</type> </os> </domain> EOF 2. virsh undefine duck Actual results: error: Failed to undefine domain duck error: End of file while reading data: Input/output error error: Failed to reconnect to the hypervisor Expected results: Domain duck has been undefined Additional info: Reported by Liuji (Jeremy) on libvir-list: https://www.redhat.com/archives/libvir-list/2013-September/msg00337.html
Fixed upstream: commit ef5d51d491356f1f4287aa3a8b908b183b6dd9aa Author: Liuji (Jeremy) <jeremy.liu@huawei.com> AuthorDate: 2013-09-10 22:13:32 -0400 Commit: Ján Tomko <jtomko@redhat.com> CommitDate: 2013-09-11 09:18:28 +0200 virDomainDefParseXML: set the argument of virBitmapFree to NULL after calling virBitmapFree After freeing the bitmap pointer, it must set the pointer to NULL. This will avoid any other use of the freed memory of the bitmap pointer. https://bugzilla.redhat.com/show_bug.cgi?id=1006710 Signed-off-by: Liuji (Jeremy) <jeremy.liu@huawei.com> git describe: v1.1.2-96-gef5d51d
Downstream patch posted: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-September/msg00293.html
This bug is fixed in libvirt-0.10.2-25.el6.x86_64, so I choose to change the status to VERIFIED. # rpm -q libvirt libvirt-0.10.2-25.el6.x86_64 # virsh define /dev/stdin <<EOF > <domain type='qemu'> > <name>duck</name> > <memory unit='MiB'>32</memory> > <numatune> > <memory mode='preferred' placement='auto' nodeset='0'/> > </numatune> > <os> > <type arch='x86_64' machine='pc'>hvm</type> > </os> > </domain> > EOF Domain duck defined from /dev/stdin # virsh undefine duck Domain duck has been undefined # service libvirtd status libvirtd (pid 22361) is running...
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-2013-1581.html