Bug 452740

Summary: Kernel crash of Domain-0 while doing multiple dd's on a raid device.
Product: Red Hat Enterprise Linux 5 Reporter: Masoud Sharbiani <masouds>
Component: kernel-xenAssignee: Xen Maintainance List <xen-maint>
Status: CLOSED DUPLICATE QA Contact: Martin Jenner <mjenner>
Severity: high Docs Contact:
Priority: low    
Version: 5.2   
Target Milestone: rc   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-12-09 21:28:53 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:
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Description Flags
Crash log, as captured from ttyS0 none

Description Masoud Sharbiani 2008-06-24 18:25:54 UTC 
Description of problem:
I have a Dual P4 Xeon machine (32 bit Xeons), with hyperthreading enabled and 6
gigs of memory, with 6 IDE drives. 4 of these are on a separate controller card,
and setup as a soft raid device /dev/md0, mounted on /data. If I try and run
multiple 'dd if=/dev/zero of=/data', it crashes.


Version-Release number of selected component (if applicable):
2.6.18-92.el5xen

How reproducible:
Happens every time.

Steps to Reproduce:
1. Run multiple instances of dd if=/dev/zero of=/data/bigfatfile.$RANDOM on a
device.
2. Reducing the amount of memory available to Domain-0 seems to trigger it sooner.

  
Actual results:
System crashes.




Expected results:


Additional info:
Comment 1 Masoud Sharbiani 2008-06-24 18:25:54 UTC 
Created attachment 310169 [details]
Crash log, as captured from ttyS0
Comment 2 Bill Burns 2008-12-09 21:28:53 UTC 
Closing this as a duplicate of Bugzilla 452175 as it appears to be the same issue.

*** This bug has been marked as a duplicate of bug 452175 ***