Bug 455310 – LS21 locks up booting MRG RT kernel

Bug 455310 - LS21 locks up booting MRG RT kernel

Summary:	LS21 locks up booting MRG RT kernel

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise MRG
Classification:	Red Hat
Component:	realtime-kernel (Show other bugs)
Sub Component:
Version:	1.0
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Real Time Maintenance
QA Contact:
Docs Contact:

URL:
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Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2008-07-14 15:29 EDT by Clark Williams
Modified:	2008-08-14 17:31 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2008-08-14 17:31:18 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Boot log for LS21 lockup (4.74 KB, text/plain) 2008-07-14 15:29 EDT, Clark Williams	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Clark Williams 2008-07-14 15:29:41 EDT

Description of problem:
RT kernel fails to boot on blade1 of HSV bladecenter (blade2 boots the kernel
and runs fine). Same blade boots and runs RHEL5.2 kernel.

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

kernel-rt-2.6.24.7-72.el5rt

How reproducible:

Every time.

Steps to Reproduce:
1. Install RHEL5.2
2. Install MRG RT kernel
3. Boot RT kernel
  
Actual results:

Kernel hangs after reporting amount of memory available (see attached console
output).


Expected results:

Running kernel

Additional info:

Debbugging printk's indicate that the hang is occuring in
calibrate_delay_direct(). Jiffies are not incrementing, so the calibration loop
never terminates.

Comment 1 Clark Williams 2008-07-14 15:29:41 EDT

Created attachment 311759 [details]
Boot log for LS21 lockup

Comment 2 Clark Williams 2008-07-14 17:17:04 EDT

I swapped the two LS21's that were in slots 1 & 2 and the failing blade
(formerly in slot 1) reported double bit errors on DIMM slots 5 & 6, disabled
the two slots and then booted on up. 

Here's a cut-n-paste from the web interface to the event log:

1  E  BLADE_02 	 07/14/08, 21:07:55 	(SN#YK10A269W03L) DIMM number 5 failed.
2  E  BLADE_02 	 07/14/08, 21:07:55 	(SN#YK10A269W03L) POSTBIOS: 289 Board 1
DIMM Pair 3 Double Bit Error.
3  E  BLADE_02 	 07/14/08, 21:07:54 	(SN#YK10A269W03L) DIMM number 6 failed.
4  E  BLADE_02 	 07/14/08, 21:07:54 	(SN#YK10A269W03L) POSTBIOS: 289 Board 1
DIMM Pair 3 Double Bit Error.
5  I  BLADE_02 	 07/14/08, 21:07:25 	(SN#YK10A269W03L) System Reboot

Comment 3 Clark Williams 2008-08-14 17:31:18 EDT

Closing due to confirmed h/w error

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