Bug 230634 - PVFB backend fails to terminate when frontend vanishes early
PVFB backend fails to terminate when frontend vanishes early
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: xen (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Markus Armbruster
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2007-03-01 16:39 EST by Markus Armbruster
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: RHEA-2007-0635
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2007-11-07 12:09:59 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Proposed fix (1.20 KB, patch)
2007-03-02 09:09 EST, Markus Armbruster
no flags Details | Diff

  None (edit)
Description Markus Armbruster 2007-03-01 16:39:23 EST
Description of problem:
When the frontend vanishes from xenstore before the connection is established,
the backend fails to terminate.

Version-Release number of selected component (if applicable):


How reproducible:
Always.

Steps to Reproduce:
1. Make sure the guest has a VNC PVFB configured.
2. Start the guest (e.g. with xm create) with a kernel that lacks PVFB.
3. Shut down the guest, e.g. with xm shutdown.
  
Actual results:
Process xen-vncfb is still running for the guest.

Expected results:
Process xen-vncfb terminates when guest shuts down.

Additional info:
The steps to reproduce use a kernel without PVFB just to make them independent
of timing.  The bug should also bite with a stock kernel (which has PVFB), when
the guest is shut down or destroyed quickly enough.
Comment 1 Markus Armbruster 2007-03-02 09:09:21 EST
Created attachment 149113 [details]
Proposed fix

The fix submitted upstream is not sufficient with our backwards compatibility
code.
Comment 2 RHEL Product and Program Management 2007-03-29 14:44:35 EDT
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 4 Markus Armbruster 2007-06-14 10:19:31 EDT
Patch has been reviewed and committed to the rhel-5-1-hybrid-merge branch, where
it is now awaiting to be merged into the trunk.
Comment 5 Daniel Berrange 2007-06-14 10:58:15 EDT
Built into dist-5E-qu-candidate as xen-3.0.3-27.el5

* Thu Jun 14 2007 Daniel P. Berrange <berrange@redhat.com> - 3.0.3-27.el5
- Ensure pvfb terminates when frontend vanishes early (rhbz#230634)
Comment 8 errata-xmlrpc 2007-11-07 12:09:59 EST
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHEA-2007-0635.html

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