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Bug 171277

Summary: MCE arg parsing broken on x86-64
Product: Red Hat Enterprise Linux 3 Reporter: Bastien Nocera <bnocera>
Component: kernelAssignee: Jim Paradis <jparadis>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0CC: peterm, petrides
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Fixed In Version: RHSA-2006-0437 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-07-20 13:32:21 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 181405, 191141    
Description Flags
bluesmoke-arg-parsing-x86-64.patch none

Description Bastien Nocera 2005-10-20 10:23:45 UTC
In arch/x86-64/kernel/bluesmoke.c:
__setup("mce", mcheck_enable);

And the comment for mcheck_enable says:
/* mce=off disable machine check
   mce=nok8 disable k8 specific features
   mce=disable<NUMBER> disable bank NUMBER
   mce=enable<NUMBER> enable bank number
   mce=NUMBER mcheck timer interval number seconds.
   Can be also comma separated in a single mce= */
But the '=' passed to mcheck_enable is not taken into account, and parsing will
fail every time.

Trivial patch attached.

Comment 1 Bastien Nocera 2005-10-20 10:23:46 UTC
Created attachment 120187 [details]

Comment 2 Jim Paradis 2006-02-10 18:53:43 UTC
This bug, as reported, is actually against RHEL3, not RHEL4 (the patch supplied
is a 2.4 patch, and bluesmoke.c is only seen in RHEL3).  The same problem occurs
in RHEL4, though.  I'll file a separate bug for that.

Comment 3 Ernie Petrides 2006-02-18 00:25:30 UTC
A fix for this problem has just been committed to the RHEL3 U8
patch pool this evening (in kernel version 2.4.21-40.2.EL).

Comment 4 Ernie Petrides 2006-04-28 21:53:20 UTC
Adding a couple dozen bugs to CanFix list so I can complete the stupid advisory.

Comment 7 Red Hat Bugzilla 2006-07-20 13:32:21 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 the 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.