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Bug 467781

Summary: MRG kernel has the e1000e bug
Product: Red Hat Enterprise MRG Reporter: Steven Rostedt <srostedt>
Component: realtime-kernelAssignee: Steven Rostedt <srostedt>
Status: CLOSED ERRATA QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: 1.1CC: bhu, davids, lgoncalv
Target Milestone: 1.1   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-01-22 10:43:58 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
back port dynamic ftrace fixes to handle e1000e bug
none
back port of recordmcount.pl none

Description Steven Rostedt 2008-10-20 20:59:54 UTC
The cause of the bug that corrupted the e1000e chips in 2.6.27-rc was traced down to the dynamic ftrace tracer. Since MRG has the dynamic ftrace tracer, I looked into it. After reviewing the code, I believe this bug exists in the MRG tracer kernel.

I have a fix for 2.6.28 that I will back port to the MRG kernel.

Comment 1 Steven Rostedt 2008-10-23 03:15:29 UTC
Created attachment 321236 [details]
back port dynamic ftrace fixes to handle e1000e bug

This patch adds protection against the occurrence of the e1000e corruption bug.

It backports several aspects of the mainline kernel. See patch description for details.

Comment 2 Steven Rostedt 2008-10-23 03:17:02 UTC
Created attachment 321237 [details]
back port of recordmcount.pl

This backport of recordmcount.pl limits the processing of mcount to only the .text section. This helps prevent processing of code that might be freed at a later time.

Comment 3 Luis Claudio R. Goncalves 2008-10-23 12:34:19 UTC
Added to -88

Comment 5 David Sommerseth 2008-11-19 18:02:37 UTC
Found the attachments in the mrg-rt.git tree as commit 23a888a376a1f8fe3dfff714a1d53bfd3e62be2c  and  3469966152d6203d146f78a6f5ad549afcfb6b2d

Found the commits being implemented in the mrg-rt-2.6.24.7-93 branch.

Comment 7 errata-xmlrpc 2009-01-22 10:43:58 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2009-0009.html