Bug 35824 – Enterprise kernel hangs system with 8GB of memory (seawolf)

Bug 35824 - Enterprise kernel hangs system with 8GB of memory (seawolf)

Summary:	Enterprise kernel hangs system with 8GB of memory (seawolf)

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	kernel (Show other bugs)
Sub Component:
Version:	7.1
Hardware:	i386 Linux

Priority	high Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Michael K. Johnson
QA Contact:	Brock Organ
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2001-04-12 15:23 EDT by Mark Rusk
Modified:	2005-10-31 17:00 EST (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2001-07-11 15:35:09 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)
ksymoops from magic sysreq dump (34.50 KB, text/plain) 2001-04-12 15:29 EDT, Mark Rusk	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Mark Rusk 2001-04-12 15:23:43 EDT

From Bugzilla Helper:
User-Agent: Mozilla/4.75 [en] (X11; U; Linux 2.4.2-0.1.32 i686)


When running Cerberus tests on an 8-way with 8gb of memory, system hangs
within 10 minutes of start of testing with enterprise kernel.  System has
16gb of swap.

Reproducible: Always
Steps to Reproduce:
1.Load 7.1
2.start cerberus
3. wait 10 minutes
	

Only "magic" sysrq key works.  I will attach a ksymoops output.

Comment 1 Mark Rusk 2001-04-12 15:29:15 EDT

Created attachment 15264 [details]
ksymoops from  magic sysreq dump

Comment 2 Michael K. Johnson 2001-04-13 13:32:12 EDT

This is a deadlock involving zone pressure when dealing with bounce buffers.
It will only occur with the enterprise kernel, and then only on machines
containing memory with physical addresses above 4GB.  We are investigating.

The amount of time it takes to reproduce this is variable.  It happens only
under a combination of extreme IO load and extreme memory pressure.

Comment 3 Matt Domsch 2001-04-16 18:33:46 EDT

Since this is a sev-1 bug with the gold CDs, can we move this out of the beta 
team to public?
-Matt

Comment 4 Matt Domsch 2001-07-11 15:35:05 EDT

Resolved in SBE kernel 2.4.3-6, therefore also in errata kernel 2.4.3-12.  
Closing.

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