RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Description of problem:
'Out of memory' error from libvirt on bad xml

Version-Release number of selected component (if applicable):
- libvirt-0.8.7-18.el6.x86_64
- kernel-2.6.32-131.0.1.el6.x86_64
- qemu-kvm-0.12.1.2-2.158.el6.x86_64

How reproducible:
always

Steps to Reproduce:
1. Add the following xml to a shutoff guest
    <controller type='scsi' index='1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x1'/>
    </controller>
Note: slot 0x09 is an unused slot
2. # virsh start rhel5
error: Failed to start domain rhel5
error: out of memory
  
Actual results:
report misleading error

Expected results:
report a more accurate error
error: internal error Only PCI device addresses with function=0 are supported

Additional info:
bug 675030 resloved 'attach-device <misleading-controller-configuration>' issue.

commit 56152be57887cfc9a92d4fbb0c81f024664ddb46
Author: Eric Blake <eblake>
Date:   Tue Feb 15 09:31:39 2011 -0700

    qemu: don't mask real error with oom report
    
    * src/qemu/qemu_command.c (qemuBuildCommandLine): Don't report oom
    after qemuBuildControllerDevStr, which reported its own errors.

v0.8.7-250-g56152be

Verified pass with libvirt-0.9.1-1.el6.x86_64
1. Add the above xml to guest config file
    <controller type='scsi' index='1'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09'
function='0x1'/>
    </controller>
2. # virsh start rhel61_x86_64
error: Failed to start domain rhel61_x86_64
error: internal error Only PCI device addresses with function=0 are supported

Set it as VERIFIED per comment2

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-2011-1513.html