TECHNICAL INFORMATION DOCUMENT

TITLE:              PTF612 - crash command fix
DOCUMENT ID:        TID300040
DOCUMENT REVISION:  B
DATE:               25JAN95
ALERT STATUS:       Yellow
INFORMATION TYPE:   Symptom Solution
README FOR:         PTF612

PRODUCT and VERSION:
UnixWare 1.1

ABSTRACT:

The ptf612 file contains PTF612 - crash command fix to prevent coredump. 
When crash is run on a dumpfile, it can go in a recursion when trying 
to read an invalid address from the kernel address space and overflow 
the stack and cause a core dump.  PTF612 will solve this problem by 
making crash gracefully exit when reading from an invalid address. 
This update is for UnixWare 1.1 or UnixWare 1.1.1 and is replaced by 
update 1.1.2

SYMPTOM

When crash is run on a dumpfile, it can go in a recursion when trying 
to read an invalid address from the kernel address space and overflow 
the stack and cause a core dump.  PTF612 will solve this problem by 
making crash gracefully exit when reading from an invalid address.

SOLUTION

Apply the ptf612 file.


Installation Instructions:

DATATYPE: datastream

1.  Download the ptf612.Z and ptf612.txt files to the /tmp directory  
    on your machine.

2.  Read the release notes contained in this file.

3.  Now become root, uncompress the file and add the package to your 
    system using the following commands:

     $ su
     # uncompress /tmp/ptf612.Z
     # pkgadd -d /tmp/ptf612 ptf612

1. General Description

These release notes acquaint you with the contents of UnixWare 
PTF612 - crash command fix to prevent coredump.  When crash is 
run on a dumpfile, it can go in a recursion when trying to read 
an invalid address from the kernel address space and overflow the 
stack and cause a core dump.  PTF612 will solve this problem by 
making crash gracefully exit when reading from an invalid address.

2. Software Notes

We recommend that PTF612 be installed on UnixWare 1.1 and preferrably with
update 1.1.1 already installed.  PTF612 contains an updated version of the
crash command.

NOTE: This patch is replaced by update 1.1.2 and modifies same files as 
update 1.1.1

3. Installation Instructions

Enter:
     
     $ pkgadd -d diskette1

to install the fix.