Bug 853043

Summary:	guest can't start with unable to set security context error if guests are unconfined
Product:	Red Hat Enterprise Linux 6	Reporter:	Wayne Sun <gsun>
Component:	libvirt	Assignee:	Peter Krempa <pkrempa>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.4	CC:	acathrow, dallan, dyasny, dyuan, gsun, mzhan, rwu, ydu, zhwang
Target Milestone:	rc	Keywords:	Regression
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	libvirt-0.10.1-1.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	823857	Environment:
Last Closed:	2013-02-21 07:22:46 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	823857
Bug Blocks:

Comment 3 Peter Krempa 2012-08-30 15:01:41 UTC

Fixed upstream with:

commit 1497e36db97e257bbdb037066994aac5ca3e75f6
Author: Peter Krempa <pkrempa>
Date:   Thu Aug 30 16:05:53 2012 +0200

    security: Re-apply commit ce53382ba28179d3a504b29b4f888b6e130d53f0
    
    Recent changes in the security driver discarded changes that fixed
    labeling un-confined guests.

Moving to POST.

Comment 5 zhenfeng wang 2012-09-03 07:07:12 UTC

pkgs
# rpm -qa|grep libvirt
libvirt-0.10.1-1.el6.x86_64

steps

1. Make sure selinux is Enforcing
# getenforce
Enforcing

2. Before set security_default_confined, prepare a guest, and start it, then check the guest's seclabel

# virsh dumpxml tesredhat |grep seclabel -A 3
  <seclabel type='dynamic' model='selinux' relabel='yes'>
    <label>unconfined_u:system_r:svirt_t:s0:c317,c596</label>
    <imagelabel>unconfined_u:object_r:svirt_image_t:s0:c317,c596</imagelabel>
  </seclabel>
</domain>


3. Set security_default_confined=0 in qemu.conf and restart libvirtd

4. Recheck the guest's seclabel
# virsh dumpxml tesredhat |grep seclabel -A 3
  <seclabel type='dynamic' model='selinux' relabel='yes'>
    <label>unconfined_u:system_r:svirt_t:s0:c317,c596</label>
    <imagelabel>unconfined_u:object_r:svirt_image_t:s0:c317,c596</imagelabel>
  </seclabel>
</domain>

5. Destroy the guest, and restart it
# virsh start tesredhat
Domain tesredhat started

# virsh dumpxml tesredhat |grep seclabel -A 3
  <seclabel type='none' model='selinux'/>
</domain>

6. # ll -Z /var/lib/libvirt/images/tesredhat.img 
-rw-r-xr-x. qemu qemu system_u:object_r:virt_image_t:s0 /var/lib/libvirt/images/tesredhat.img

7.# virsh dumpxml tesredhat --inactive |grep seclabel -A 3

BTW 
I can reproduce this bug in the pkg libvirt-0.10.0-1.el6.x86_64

AS in step 5&6 ,guest can start normally
So, this is fixed.

Comment 6 errata-xmlrpc 2013-02-21 07:22:46 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/RHSA-2013-0276.html