Bug 643345 - netback does not properly get to the Connected state after it's been Closed [rhel-5.5.z]
Summary: netback does not properly get to the Connected state after it's been Closed [...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel-xen
Version: 5.5
Hardware: All
OS: Linux
high
medium
Target Milestone: rc
: ---
Assignee: Jiri Pirko
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 591548
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-10-15 11:07 UTC by RHEL Program Management
Modified: 2015-05-05 01:21 UTC (History)
10 users (show)

Fixed In Version: kernel-2.6.18-194.28.1.el5
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-01-04 16:55:05 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0004 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2011-01-04 16:52:05 UTC

Description RHEL Program Management 2010-10-15 11:07:00 UTC
This bug has been copied from bug #591548 and has been proposed
to be backported to 5.5 z-stream (EUS).

Comment 2 Jiri Pirko 2010-11-16 09:43:37 UTC
in kernel-2.6.18-194.28.1.el5

linux-2.6-virt-xen-fix-connected-state-after-netback-dev-closed.patch

Comment 4 Lei Wang 2010-12-07 10:08:06 UTC
Hi, Paolo

Would you please help to provide the more exact steps to reproduce this bug?

Comment 5 Paolo Bonzini 2010-12-07 10:40:24 UTC
You can install a Windows VM with PV drivers and disable then enable the PV network cards from Device Manager.  Without the patch the domain will hang after just a few tries and you will have to destroy the domain.  5 are enough to confirm the bug is verified.

Comment 6 Lei Wang 2010-12-08 02:17:48 UTC
Hi, Paolo, thanks for your clarification.

Tested with:
i386 and x86_64 host
Win2008-64 guest
Win2003-32 guest

component version:
xen-3.0.3-120.el5
xenpv-win-1.3.1-1.el5

Steps:
1. install xenpv-win-1.3.1-1 on Windows guest
2. disable then enable the PV NIC from Device Manager
3. repeat step2

Reproduced the bug with kernel-xen-2.6.18-194.el5:
For Win2003-32 guest, it takes one or two disable/enable cycles to make guest hang.
For Win2008-64 guest, it takes only one disable/enable cycle to make guest hang.

Verified the bug with kernel-xen-2.6.18-194.30.1.el5:
For both guests, disable/enable work smoothly, and after five disable/enable cycles the guests still work fine without hang.

According the test result above, move to VERIFIED.

Comment 8 errata-xmlrpc 2011-01-04 16:55:05 UTC
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 therefore 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/RHSA-2011-0004.html


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