Bug 712319 - RHEL 6 Xen HVM guest with multiple vcpus crashes on Intel with 96 CPUs and 1T memory
Summary: RHEL 6 Xen HVM guest with multiple vcpus crashes on Intel with 96 CPUs and 1T...
Keywords:
Status: CLOSED DUPLICATE of bug 661211
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.1
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Red Hat Kernel Manager
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-10 09:48 UTC by Jinxin Zheng
Modified: 2011-06-10 12:37 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-06-10 12:37:56 UTC
Target Upstream Version:

Attachments (Terms of Use)
guest domain config (533 bytes, text/plain)
2011-06-10 09:48 UTC, Jinxin Zheng 		no flags Details
guest console output (32.32 KB, text/plain)
2011-06-10 09:49 UTC, Jinxin Zheng 		no flags Details
xend log (771.77 KB, text/plain)
2011-06-10 09:50 UTC, Jinxin Zheng 		no flags Details
xm dmesg (16.00 KB, text/plain)
2011-06-10 09:50 UTC, Jinxin Zheng 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

Description Jinxin Zheng 2011-06-10 09:48:56 UTC 
Created attachment 504057 [details]
guest domain config

Description of problem:
On an Intel host with 96 CPUs and 1T mem, RHEL 6.1 Xen HVM fails to boot. It crashes a few seconds after it's created, endlessly outputing some like "BUG: soft lockup - CPU#1 stuck for 106s!".

Tested 64 bit and 32 bit guests, both crashed.

Version-Release number of selected component (if applicable):
guest: kernel-2.6.32-131.0.15.el6
host: kernel-xen-2.6.18-267.el5, xen-3.0.3-132.el5
CPU is Intel Xeon E7450, with 1T memory.

How reproducible:
Always

Steps to Reproduce:
1.
On the described host, xm create the HVM domain using the attached config.
2.
3.
  
Actual results:
Guest crash after a while.

Expected results:
Don't crash.

Additional info:
RHEL 6 PV guest does not crash in the same env.
Comment 1 Jinxin Zheng 2011-06-10 09:49:45 UTC 
Created attachment 504058 [details]
guest console output
Comment 2 Jinxin Zheng 2011-06-10 09:50:08 UTC 
Created attachment 504059 [details]
xend log
Comment 3 Jinxin Zheng 2011-06-10 09:50:27 UTC 
Created attachment 504060 [details]
xm dmesg
Comment 6 Jinxin Zheng 2011-06-10 10:11:29 UTC 
Oh, I forgot one thing: the HVM guest is given more than 1 vcpus. Single vcpu did not trigger the crash.
Comment 8 Andrew Jones 2011-06-10 11:22:31 UTC 
Try clocksource=jiffies on the guest kernel command line.
Comment 9 Jinxin Zheng 2011-06-10 11:45:38 UTC 
(In reply to comment #8)
> Try clocksource=jiffies on the guest kernel command line.

That's working!

It doesn't crash after adding clocksource=jiffies.
Comment 10 Andrew Jones 2011-06-10 12:37:56 UTC 

*** This bug has been marked as a duplicate of bug 661211 ***
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