Bug 503077 - [rhts] ia64: hvm guests cause large amounts of soft lockup warnings
Summary: [rhts] ia64: hvm guests cause large amounts of soft lockup warnings
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel-xen
Version: 5.4
Hardware: All
OS: Linux
low
medium
Target Milestone: rc
: ---
Assignee: Rik van Riel
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-05-28 18:17 UTC by Don Zickus
Modified: 2009-07-09 14:28 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-07-09 14:28:41 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)

Description Don Zickus 2009-05-28 18:17:44 UTC
Description of problem:
  When running our kernel tier 1 tests, we are noticing large amounts of
soft lockup warnings to the point our tests timeout and fail.  Only recently
we have noticed more and more of these failures.

Some examples are:

Checking dmesg for specific failures!
BUG: soft lockup - CPU#1 stuck for 10s! [rhts-submit-log:32765]
BUG: soft lockup - CPU#1 stuck for 10s! [avahi-daemon:2233]
BUG: soft lockup - CPU#1 stuck for 10s! [events/1:9]
BUG: soft lockup - CPU#0 stuck for 10s! [kjournald:379]
End of log.

The following links show the failures for kernel-2.6.18-151.el5
http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=8318960
http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=8313998
http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=8318018
http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=8315830
http://rhts.redhat.com/cgi-bin/rhts/test_log.cgi?id=8315632

Look through my testsuite history, kernel-2.6.18-146.el5 seemed to have
expected problems of only rpciod soft lockups (which has been normal for a
while), kernel-2.6.18-147.el5 failed to installed, kernel-2.6.18-148.el5 had
numerous softlockup failures which were _not_ expected.

Version-Release number of selected component (if applicable):
kernel-2.6.18-151.el5

How reproducible:
very

Steps to Reproduce:
1. run a kernel tier1 testsuite and notice how only hvm guests have issues
2.
3.

Actual results:


Expected results:


Additional info:

Comment 2 Chris Lalancette 2009-07-09 12:20:59 UTC
Is this still a problem, or have these messages gone away?  I seem to remember some changed in 5.4 that fixed this particular problem, but my memory is fuzzy.  DonZ?

Chris Lalancette

Comment 3 Don Zickus 2009-07-09 13:05:07 UTC
Things have quieted down recently and I have not seen the volume of softlockups as I did in the past.  

So if you want to close this as fixed in CURRENTRELEASE or something, I am ok with that.  If that problem pops up again, I know where to find you. :-)

Comment 4 Chris Lalancette 2009-07-09 14:28:41 UTC
Haha.  OK, will do, and as always, feel free to open another bug :).

Chris Lalancette


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