Bug 688445 - kdump don't works on POWER7 with echo 3 > /proc/crasher
Summary: kdump don't works on POWER7 with echo 3 > /proc/crasher
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kexec-tools
Version: 6.1
Hardware: ppc64
OS: Linux
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Cong Wang
QA Contact: Kernel Dump QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-03-17 04:25 UTC by Chao Ye
Modified: 2013-09-30 02:23 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-03-17 05:10:43 UTC
Target Upstream Version:

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Description Chao Ye 2011-03-17 04:25:23 UTC 
Description of problem:
When trigger crash with echo 3 > /proc/crasher, system got freeze. Both console and ssh freeze, no output and no response.

Version-Release number of selected component (if applicable):
kernel-2.6.32-124.el6
kexec-tools-2.0.0-169.el6

How reproducible:
100% on POWER7

Steps to Reproduce:
1.Install RHEL6.1-20110311.3
2.Upgrade to latest kernel/kexec-tools
3.Build crasher.ko(fetch source via yum install -y rh-tests-kernel-kdump-crash-crasher)
4.echo 3 > /proc/crasher

Actual results:
System freezed

Expected results:
vmcore saved

Additional info:
I tested with echo 0/1/2 > /proc/crasher, all of them works fine.
System reserved: ibm-p750e-02-lp3.rhts.eng.bos.redhat.com
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