Bug 723843

Summary:	[libvirt] virsh list produced segmentation fault when libvirtd is not running
Product:	Red Hat Enterprise Linux 6	Reporter:	Haim <hateya>
Component:	libvirt	Assignee:	Michal Privoznik <mprivozn>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.2	CC:	dnaori, dyuan, mgoldboi, mprivozn, mzhan, rwu, veillard, xhu, yeylon
Target Milestone:	rc
Target Release:	6.2
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:	libvirt-0.9.3-8.el6	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-12-06 11:17:26 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Haim 2011-07-21 11:10:25 UTC

Description of problem:

when libvirtd is not running, virsh list produces segmentation fault:

#0  0x00007ffff75e7eb7 in pthread_mutex_lock () from /lib64/libpthread.so.0
#1  0x00007ffff7af30d5 in virNetClientClose () from /usr/lib64/libvirt.so.0
#2  0x00007ffff7ae5cbf in doRemoteOpen () from /usr/lib64/libvirt.so.0
#3  0x00007ffff7ae7d61 in remoteOpen () from /usr/lib64/libvirt.so.0
#4  0x00007ffff7aa6c81 in do_open () from /usr/lib64/libvirt.so.0
#5  0x00007ffff7aa8f96 in virConnectOpenAuth () from /usr/lib64/libvirt.so.0
#6  0x0000000000425400 in main ()


repro:

- connect to 'qemu:///system'
- no libvirtd running

Comment 1 Michal Privoznik 2011-07-21 11:14:04 UTC

moving to POST:

commit b14800af14f8c13f2ca80f0a912fbb94d68628e8
Author: Guannan Ren <gren>
Date:   Wed Jul 20 15:20:18 2011 +0100

    Don't try to close a NULL virNetClientPtr
    
    * src/rpc/virnetclient.c: Skip close attempt if virNetClientPtr
      is NULL

v0.9.3-203-gb14800a

Comment 3 Daniel Berrangé 2011-07-21 14:30:38 UTC

*** Bug 723912 has been marked as a duplicate of this bug. ***

Comment 4 xhu 2011-07-26 08:31:17 UTC

I have verified it on RHEL6u2 server with the following component and it passed:
libvirt-0.9.3-8.el6
qemu-kvm-0.12.1.2-2.172.el6
kernel-2.6.32-171.el6

The steps are as follows:
1 stop libvirtd daemon
# service libvirtd stop
Stopping libvirtd daemon:                                  [  OK  ]

2 list the guest
# virsh list
error: Failed to reconnect to the hypervisor
error: no valid connection
error: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Connection refused

3 start libvirtd daemon
# service libvirtd start
Starting libvirtd daemon:                                  [  OK  ]

4 list the guest
# virsh list --all
 Id Name                 State
----------------------------------
  - rhel6                shut off
  - RHEL6-1              shut off
  - vr-win7-i386-kvm     shut off

Comment 5 errata-xmlrpc 2011-12-06 11:17:26 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/RHBA-2011-1513.html