TITLE:  HP Tru64 UNIX V5.1B PK2 (BL22) AdvFS Panic in _OtsMove; and
Possible Memory Corruption

Copyright (c) Hewlett-Packard Company 2003.  All rights reserved.


PRODUCT:    HP Tru64 UNIX [R] 5.1B
SOURCE:     Hewlett-Packard Company

ECO INFORMATION:

     ECO Name:  T64KIT0020879-V51BB22-E-20031125
     ECO Kit Approximate Size:  4.06MB 
     Kit Applies To:  HP Tru64 UNIX 5.1B PK2 (BL22)

     ECO Kit CHECKSUMS:
	/usr/bin/sum results:  
	54539   4160

	/usr/bin/cksum results: 
	2305254980 4259840

	MD5 results:   
	812e04455e92e042cabac8d647d75acf

	SHA1 results:
	2ba0fc0f7c2760090ccbeb3f94f9f447eb8f809d


ECO KIT SUMMARY:

A dupatch-based, Early Release Patch kit exists for HP Tru64 UNIX 5.1B that
contains solutions to the following problem(s):

This ERP contains corrections for the following two issues:

o HP Tru64 UNIX V5.1B PK2 (BL22) AdvFS Panic in _OtsMove 

  An HP Tru64 UNIX V5.1B PK2 (BL22) system can panic with a kernel 
  memory fault in _OtsMove if threads are performing AdvFS 
  direct I/O read operations. The panicing thread in the crash 
  has the following stack trace segment: 

    [...]
    6 _XentMM
    7 _OtsMove
    8 uiomove
    9 uiomove_frag
    10 fs_read[...]

  
o HP Tru64 UNIX Possible Memory Corruption:

  Under certain circumstances, memory corruption can occur when a 
  non-Tru64 UNIX NFS client attempts to increase the size of an AdvFS file.

  The problem usually appears as a kernel memory fault and corruption 
  in multiple kernel memory buckets. A thread in the crash has the
  following stack trace segment:

    [...]    
    5 _OtsZero    
    6 fs_setattr    
    [...]


The Patch Kit Installation Instructions and the Patch Summary and Release
Notes documents provide patch kit installation and removal instructions
and a summary of each patch. Please read these documents prior to 
installing patches on your system.

The patches in this ERP kit are also available in HP Tru64 UNIX 5.1B Patch Kit 3.


INSTALLATION NOTES:

1) Install this kit with the dupatch utility that is included in the patch
   kit. You may need to baseline your system if you have manually changed
   system files on your system. The dupatch utility provides the baselining
   capability.

2) This ERP kit will NOT install over any Customer Specific Patches (CSPs)
   which have file intersections with this ERP kit. Contact your normal
   Service Provider for assistance if the installation of this ERP kit is
   blocked by any of your installed CSPs.


INSTALLATION PREREQUISITES:

You must have installed HP Tru64 UNIX 5.1B PK2 (BL22) prior to installing 
this Early Release Patch Kit.


SUPERSEDED PATCH LIST:

This patch kit supersedes the following Tru64 UNIX patch kit:

   T64KIT0019920-V51BB22-E-20030909.tar

KNOWN PROBLEMS WITH THE PATCH KIT:

None.


RELEASE NOTES FOR T64KIT0020879-V51BB22-E-20031125:


			 Release Notes

     This document summarizes the contents and special instructions for the 
     Tru64 UNIX V5.1B patches contained in this kit.

     For information about installing or removing patches, baselining, 
     and general patch management, see the Patch Kit Installation 
     Instructions document. 

1 Release Notes


This Early Release Patch Kit Distribution contains:

   - fixes that resolve the problem(s) reported in: 
        o DSATN14T3 
             * for Tru64 UNIX V5.1B T64V51BB22AS0002-20030415.tar (BL22)

 The patches in this kit are being released early for general customer use.
 Refer to the Release Notes for a summary of each patch and installation 
 prerequisites.

 Patches in this kit are installed by running dupatch from the directory 
 in which the kit was untarred. For example, as root on the target system:

	> mkdir -p /tmp/CSPkit1
	> cd /tmp/CSPkit1
	> <copy the kit to /tmp/CSPkit1>
	> tar -xpvf DUV40D13-C0044900-1285-20000328.tar
	> cd patch_kit
	> ./dupatch

2 Special Instructions

There are no special instructions for Tru64 UNIX V5.1B Patch C283.01


3 Summary of CSPatches contained in this kit


Tru64 UNIX V5.1B

PatchId			Summary Of Fix
----------------------------------------
C283.01			Fix KMF in _OtsMove + Fix KMF in _OtsZero


4 Additional information from Engineering


None


5 Affected system files
This patch delivers the following files:

Tru64 UNIX V5.1B
	Patch C283.01
		./sys/BINARY/advfs.mod
			CHECKSUM:	11682 1406
			SUBSET:	OSFADVFSBIN540


[R] UNIX is a registered trademark in the United States and other countries 
licensed exclusively through X/Open Company Limited.

Copyright Hewlett-Packard Company 2003.  All Rights reserved.

  This software is proprietary to and embodies the confidential technology
  of Hewlett-Packard Company.  Possession, use, or copying of this
  software and media is authorized only pursuant to a valid written license
  from Hewlett-Packard or an authorized sublicensor.

       This ECO has not been through an exhaustive field test process.
       Due to the experimental stage of this ECO/workaround, Hewlett-Packard
       makes no representations regarding its use or performance. The
       customer shall have the sole responsibility for adequate protection
       and back-up data used in conjunction with this ECO/workaround.