Bug 169660

Summary: Kernel panic when executing 64 bit java app with large memory footprint
Product: Red Hat Enterprise Linux 4 Reporter: Stefan Zier <szier>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED CURRENTRELEASE QA Contact: Brian Brock <bbrock>
Severity: high Docs Contact:
Priority: medium    
Version: 4.0   
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: 2.6.9-22.ELsmp Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2005-10-11 00:18:32 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
Screenshot of the panic none

Description Stefan Zier 2005-09-30 18:49:42 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6

Description of problem:
This is a dual Opteron system with 8GB of memory. When running the 64 bit version of Sun JRE 1.5.0_05 (the latest at this time) with a heap of 6GB and the server VM, the system reproducibly kernel panics after a few minutes of running the JVM. I don't have a screen grab of the kernel panic, but it does mention the java process and SE linux, so those would be areas to look at. 

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


How reproducible:
Always

Steps to Reproduce:
1. Run a java server app with the -server option and -Xmx6144m -Xms6144m
2. Sit back for a few minutes
3. Watch the system kernel panic
  

Actual Results:  Kernel panic. 

Expected Results:  Application running.

Additional info:
Comment 1 Jason Baron 2005-10-07 15:55:25 UTC 
A capture of the panic message would be very helpful. Is it in /var/log/messages? 

Also, the hardware here seems to be x86_64, not ia64?
Comment 2 Stefan Zier 2005-10-07 17:05:45 UTC 
Oh yes, x86_64 is correct. I checked /var/log/messages, but there are no panic
messages in there. I've photographed the screen with my cameraphone and attached
it to the ticket, I hope this helps. This time around, I wasn't even running a
Java app, I was just grepping /var/log/messages for the word "panic" -- which
caused it to panic. :)
Comment 3 Stefan Zier 2005-10-07 17:07:41 UTC 
Created attachment 119713 [details]
Screenshot of the panic
Comment 4 Stefan Zier 2005-10-11 00:18:32 UTC 
Seems updating to the -22 kernel made a difference. No crashing since I
upgraded. I'll close this ticket for now.