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Bug 227898 - flush icache early when loading module
Summary: flush icache early when loading module
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.0
Hardware: ia64
OS: Linux
Target Milestone: ---
: ---
Assignee: Doug Chapman
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2007-02-08 20:37 UTC by Doug Chapman
Modified: 2007-11-30 22:07 UTC (History)
2 users (show)

Fixed In Version: RHBA-2007-0304
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-05-08 04:49:24 UTC
Target Upstream Version:

Attachments (Terms of Use)
panic stack trace (deleted)
2007-02-08 20:44 UTC, Doug Chapman
no flags Details

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2007:0304 normal SHIPPED_LIVE Updated kernel packages available for Red Hat Enterprise Linux 4 Update 5 2007-04-28 18:58:50 UTC

Description Doug Chapman 2007-02-08 20:37:23 UTC
Description of problem:
Loading some modules with parameters can cause a panic on RHEL4.  This is easily
reproduced on ia64 montecito hardware (although likely possible on other
hardware as well).

This was fixed upstream some time ago (2.6.12):

I am working on porting that patch to current RHEL4 source.

Version-Release number of selected component (if applicable):
RHEL4 (all)

How reproducible:
100% on ia64 montecito hardware

Steps to Reproduce:
1. modprobe -v lockd nlm_udpport=4001 nlm_tcpport=4001
Actual results:

Expected results:

Additional info:

Comment 1 Doug Chapman 2007-02-08 20:44:16 UTC
Created attachment 147698 [details]
panic stack trace

Panic generated from doing:
modprobe -v lockd nlm_udpport=4001 nlm_tcpport=4001

Comment 2 Doug Chapman 2007-02-08 22:28:37 UTC
Patch has been submitted to rhkernel-list for review.

Comment 3 RHEL Product and Program Management 2007-02-09 16:23:49 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update

Comment 4 Jay Turner 2007-02-16 15:56:24 UTC
QE ack for RHEL4.5.

Comment 5 Jason Baron 2007-02-27 20:21:22 UTC
committed in stream U5 build 49. A test kernel with this patch is available from

Comment 9 Red Hat Bugzilla 2007-05-08 04:49:24 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.

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