Bug 859320

Summary: libvirt auth.conf make virsh cmd Segmentation fault (core dumped)
Product: Red Hat Enterprise Linux 6 Reporter: Huang Wenlong <whuang>
Component: libvirtAssignee: Daniel Berrangé <berrange>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 6.4CC: acathrow, berrange, cwei, dallan, dyasny, dyuan, jdenemar, mzhan, rwu, weizhan
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: libvirt-0.10.2-1.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-02-21 07:24:04 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:

Description Huang Wenlong 2012-09-21 06:43:07 UTC 
Description of problem:
libvirt auth.conf make virsh cmd Segmentation fault (core dumped) 

Version-Release number of selected component (if applicable):
libvirt-0.10.2-0rc1.el6.x86_64

How reproducible:
100%

Steps to Reproduce:

1. add auth_unix_rw="sasl" in the /etc/libvirt/libvirtd.conf
add sasl user

# saslpasswd2 -a libvirt test
(input your passwd)
# sasldblistusers2 -f /etc/libvirt/passwd.db
test.nay.redhat.com: userPassword


2. add auth.conf file in the /etc/libvirtd/
# cat /etc/libvirt/auth.conf

[credentials-sasl]
authname=test
password=redhat123

[auth-libvirt-localhost]
credentials=sasl


3. restart libvirtd
service libvirtd restart
Stopping libvirtd daemon:                                  [  OK  ]
Starting libvirtd daemon:


4. run  virsh cmd
# virsh list
Segmentation fault (core dumped)
[root@intel-q9400-4-7 ~]#
virsh  capabilities
Segmentation fault (core dumped)

5.  qemu+unix and qemu works well with auth.conf  without sasl username and passwd
# virsh -c qemu+unix:///system list 
 Id    Name                           State
----------------------------------------------------
 2     qq                             running
 4     ga                             running

# virsh -c qemu:///system list 
 Id    Name                           State
----------------------------------------------------
 2     qq                             running
 4     ga                             running




when core dumped  libvirtd.log error message :
2012-09-21 05:14:24.712+0000: 32009: error : virNetSocketReadWire:1184 : End of file while reading data: Input/output error



Actual results:
core dumped

Expected results:
no core dumped

Additional info:

virsh cmd works well after remove the auth.conf

# mv /etc/libvirt/auth.conf /etc/libvirt/auth.conf.bak
[root@intel-q9400-4-7 ~]# virsh list
Please enter your authentication name: test
Please enter your password:
 Id    Name                           State
----------------------------------------------------
 2     qq                             running
 4     ga                             running
Comment 1 Daniel Berrangé 2012-09-21 08:37:43 UTC 
Patch upstream but not merged

https://www.redhat.com/archives/libvir-list/2012-September/msg00802.html
Comment 2 Daniel Berrangé 2012-09-21 09:23:03 UTC 
Merged upstream, will be pulled in via the next rebase

commit ab42772a46e17d14204359a17234b2d9cee0ddb6
Author: Daniel P. Berrange <berrange>
Date:   Wed Sep 12 16:40:08 2012 +0100

    Fix crash accessing a NULL URI when looking up auth credentials
    
    When auto-probing hypervisor drivers, the conn->uri field will
    initially be NULL. Care must be taken not to access members
    when doing auth lookups in the config file
Comment 3 Huang Wenlong 2012-09-25 05:55:31 UTC 
Verify this bug with :
libvirt-0.10.2-1.el6.x86_64

step as comment 0
Comment 4 errata-xmlrpc 2013-02-21 07:24:04 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