Patch-ID# 101081-01
Keywords: /dev/cgsix hang 4/370 4/470 vme addressing
Synopsis: SunOS 4.1.3: bogus addr access in cgsix under dbx process can hang system
Date: Jun/10/93
 
Solairs Release: 1.1

SunOS Release: 4.1.3
 
Unbundled Product: 
 
Unbundled Release: 
 
BugId's fixed with this patch: 1123638

Architectures for which this patch is available: sparc
NOTE: sun4

Patches which may conflict with this patch:

Obsoleted by:

Problem Description: 

If a process running under dbx makes an invalid address access in
/dev/cgsix it will hang the system when you try to print the value of
(invalid) addr. The hang will occur because dbx tries to be helpful and
display a portion of what is found at addr.

If you use the correct address for the mmap, everything works as expected.


INSTALL: 

	dbx may be placed in any directory provided that the directory is
	included in the PATH environment variable.

	To install where the bundled dbx goes:

	1) su		<as root>
	2) mv /usr/ucb/dbx /usr/ucb/dbx.FCS
	3) cp dbx /usr/ucb/dbx
