AlphaServer SC patch kit:
==========================

AlphaServer SC Version : SC V2.6 SSB
Kit Name: Tru64 CSP 607.00 aka T64KIT0022045-V51BB24-20040406
Release Date: 04/07/2004
PTR: 153-2-1343 & 153-2-1387
IPMT Number: CFS.105840 & CFS.106511
Abstract: kernel memory fault mishandling of buffer pages


Description of Patch:
=====================
- Fixes a problem in vm.mod that was causing stack corruption and
  subsequent KMF panics. Two different panic strings were seen
  in reports of this same problem from different customers:

  CFS.105840: trap: invalid memory ifetch access from kernel mode
  CFS.106511: panic (cpu 1): bad nofault

  Both problems were found to have the same root cause.

This patch also includes all previous vm.mod fixes for SC V2.6 SSB.
These are listed below.

- A performance issue identified in vm.mod as a result of running NP
  benchmarking code on SCv2.6 SSB. (CFS.105883)

- A problem where an invalid core file may be generated following
  abnormal program termination. (SIERRA-285)
   

Kit location:
=============
The patch kit is T64KIT0022045-V51BB24-20040406.tar and it can be 
downloaded from ITRC.


Prerequisites:
==============
Before installing this Patch kit, you should ensure the following:

1) You have all mandatory patches for this release installed


Kit checksum:
=============
    # cksum T64KIT0022045-V51BB24-20040406.tar
    3656513935 3655680 T64KIT0022045-V51BB24-20040406.tar


Updated files:
==============

A list of the files included in this patch is given below
along with the cksum values for each file.

    2192548041 674637 /sys/BINARY/vm.mod


Instructions:
=============
This patch is provided as an sc_dupatch installable kit.  Unpack it
into a directory that is NFS mounted on all domains e.g.
/nfs/cspkit and follow the following steps to install it:


Patch required on Management Server (if used) : NO
Patch required on Domains                     : YES


1) Verify that it is possible to install the patches as follows:

   On Domains:

   # sra command -domains all -member 1 -command '/usr/sbin/sc_dupatch -install
     -kit /nfs/cspkit/patch_kit -name <user-name> -note <user-note> -noroll -nolevel2
     -noauto -precheck_only -patch C607.00'


       Note:
       ======
       if you encounter a message similiar to the following :
             ./sys/BINARY/nfs.mod:
                   its origin can not be identified.

       then,  you will need to run the actual installation (Step 3)
       with the " -deps_only " flag.

       For Example:

       # /usr/sbin/sc_dupatch -install -kit /nfs/cspkit/patch_kit -name <user-name>
         -note <user-note> -noroll -nolevel2 -noauto -deps_only -patch C607.00

       A full description of -deps_only is provided in Appendix A.1 below:
  
 

2) Now Run the Patch Installation as follows:


  On Domains:
  -----------
   Install the patch using the following commands:

   # sra command -domains all -member 1 -command '/usr/sbin/sc_dupatch -install
     -kit /nfs/cspkit/patch_kit -name <user-name> -note  <user-note> -noroll -nolevel2
     -noauto -patch C607.00'

   Now Build and Deploy the Kernels:
   Make sure all nodes are up so that kernels will be built on all nodes

   # sra command -domains all -member 1 -command 'BuildKernels'
   # sra command -domains all -member 1 -command 'DeployKernels'

   Shutdown the Domains:
   # sra shutdown -domains all

   Now boot All nodes:
   # sra boot -domains all







*******************************************************************************

Appendices:
===========

A.1 Details of -deps_only option
-------------------------------- 

Patches from UNIX support have previously been supplied to AlphaServer SC
customers in a manual install format. That is, patches were installed by the
customer running a script to copy the patch to the correct location. The
standard UNIX support patches for non-SC customers have always been supplied
using the CSP (Customer Specific Patch) format and are installed using the
dupatch tool. Patches for SC customers are now also being provided in CSP
format and these patches need to be installed using the sc_dupatch tool.

sc_dupatch does some dependency checking to ensure the patches already on the
machine are correct. It does this by comparing the chksums of files on the
system with its own dependency list. If you have manually installed a patch
that is on the dependency list for this new patch, then sc_dupatch will report
an error and not install the patch. That is because sc_dupatch is not aware of
patches installed manually.

If sc_dupatch reports an error indicating a failure to install one or more
patches, check whether this error message was generated by sc_dupatch detecting
a mismatch caused by the existence of a manually installed patch.

If you're satisfied that the conflict does arise from a manually-installed
patch which you want to override, then a simple workaround is available in the
form of the new deps_only switch. This has been introduced to cater
specifically for such situations. It turns off the inventory-checking mechanism
so that the pre-install checking is restricted to dependency-checking only.
Simply re-run the install command with the deps_only flag to skip this
inventory check and allow the installation to proceed.