Bug 731132

Summary: Possible deadlock when disconnecting from libvirt
Product: Red Hat Enterprise Linux 6 Reporter: Daniel Berrangé <berrange>
Component: virt-viewerAssignee: Daniel Berrangé <berrange>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.0CC: ddumas, mjenner, mzhan, rwu, zpeng
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: virt-viewer-0.4.1-4.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-12-06 15:07:26 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 Daniel Berrangé 2011-08-16 18:59:44 UTC 
Description of problem:
Due to an invalid implementation of the libvirt events API, virt-viewer may deadlock when disconnecting from libvirt.

Version-Release number of selected component (if applicable):
virt-viewer-0.4.1-1.el6

How reproducible:
Occasionally

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:
Comment 1 Daniel Berrangé 2011-08-16 19:00:04 UTC 
Fix upstream

http://git.fedorahosted.org/git/?p=virt-viewer.git;a=commit;h=f3714e36625168fbd06b63e4b9979e7ea8258712
Comment 3 zhe peng 2011-08-22 07:38:39 UTC 
this bug can reproduce with:
virt-viewer-0.4.1-1.el6
libvirt-0.9.4-2.el6
qemu-kvm-0.12.1.2-2.177.el6

verify with :
virt-viewer-0.4.1-4.el6
libvirt-0.9.4-2.el6
qemu-kvm-0.12.1.2-2.177.el6

step:
 1:create a guest with vnc,and start the guest
 2:use virt-viewer to connect the guest
 #virt-viewer $guest_name --debug
 3:stop libvirt service
 #service libvirtd stop
 4:the virt-viewer still active and with debug info:
.........
** (virt-viewer:847): DEBUG: Dispatch handler 4 9 0x2458be0
** (virt-viewer:847): DEBUG: Remove handle 1 4
** (virt-viewer:847): DEBUG: Cleanup of handle 0x2458b70

same behavior when using spice.the bug fixed.
verification passed.
Comment 4 errata-xmlrpc 2011-12-06 15:07:26 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/RHEA-2011-1614.html