[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference hydra::axp-developer

Title:Alpha Developer Support
Notice:[email protected], 800-332-4786
Moderator:HYDRA::SYSTEM
Created:Mon Jun 06 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3722
Total number of notes:11359

3457.0. "Khoral Research, Inc." by AMCUCS::SWIERKOWSKI (Quot homines tot sententiae) Tue Apr 08 1997 20:30

    Company Name :  Khoral Research, Inc.
    Contact Name :  John Salz (sp?)
    Phone        :  (505) 837-6500 x-483
    Fax          :  
    Email        :  - unknown -
    Date/Time in :  8-APR-1997 15:57 
    Originally entered by :  SWIERKOWSKI
    SPE center   :  PAG

    Category     :  Digital UNIX
    OS Version   :  V4.0
    System H/W   :  - unknown -


    Brief Description of Problem:
    -----------------------------

  When setting a breakpoint (using either dbx or "gdb(?)", the system crashes.
FWIW, I have no idea what "gdb" is, their voicemail system won't let you connect
directly to an extension and according to the latest asap.members list, their
ASAP membership expired 3 days ago.  I've left a voicemail with a general call
handling system and asked someone to call me back directly, cheers...





						Tony Swierkowski
						Digital Equipment Corporation
						Software Partner Engineering
						Palo Alto, California
						(415) 617-3601
						"[email protected]"
T.RTitleUserPersonal
Name
DateLines
3457.1Looks like a known problem with kernel parameter db_enableHYDRA::NEWMANChuck Newman, 508/467-5499 (DTN 297), MRO1-3/F26Wed Apr 09 1997 11:5834
       <<< TURRIS::DISK$NOTES_PACK2:[NOTES$LIBRARY]DIGITAL_UNIX.NOTE;1 >>>
                -< DIGITAL UNIX (FORMERLY KNOWN AS DEC OSF/1) >-
================================================================================
Note 8562.1           system crash when using dbx on V4.0B                1 of 2
QUARRY::petert "rigidly defined areas of doubt and uncertainty"  26 lines  23-JAN-1997 12:02
         -< Been QAR'd as a showstopper, workaround explained below. >-
--------------------------------------------------------------------------------
This is a known kernel problem.  I imagine people are working on it as
I've filed a show stopper on it.  But, in the meantime...

This will only happen on a system that is built with KDEBUG set up
in the kernel config file, /sys/conf/XXXX   where XXXX is the
uppercase system name.

The problem has to do with the kernel variable db_enable.  This is a 
relatively new kernel variable, and gets set to 1 when KDEBUG is configured.
You can resolve this by going into ladebug or dbx as superuser and
doing the following

dbx -k /vmunix        /* or whatever you are running as the OS
assign db_enable = 0

and then quit.  This will take care of the current session, but db_enable will
be reset if you have to reboot.  To take care of that:

dbx /vmunix          /* no -k this time, we want the disk version...
patch db_enable = 0

and you'll be set for the life of this particular kernel.  Note that you'll
have to do this all over again if you rebuild the kernel and leave KDEBUG
set.   As I found out this morning.  Sigh....

PeterT

3457.2Mail sent, awaiting feedback...AMCUCS::SWIERKOWSKIQuot homines tot sententiaeWed Apr 09 1997 13:3329
Greetings!

  First some updated contact information:

    Company Name :  Khoral Research, Inc.
    Contact Name :  John Salas
    Phone        :  (505) 837-6500 x-483
    Fax          :  
    Email        :  "[email protected]"
    Date/Time in :  8-APR-1997 15:57 
    Originally entered by :  SWIERKOWSKI
    SPE center   :  PAG

    Category     :  Digital UNIX
    OS Version   :  V4.0
    System H/W   :  - unknown -


  I've sent John the gist of Nick's reply in .1 to John to see if the "work-
around" described in that reply gets John going, awaiting feedback...


						Tony Swierkowski
						Digital Equipment Corporation
						Software Partner Engineering
						Palo Alto, California
						(415) 617-3601
						"[email protected]"

3457.3Call closed...AMCUCS::SWIERKOWSKIQuot homines tot sententiaeMon Apr 14 1997 13:3414
Greetings!

  Per feedback from the customer, the "work-around" got him him going (thanks 
Nick!), call closed...


						Tony Swierkowski
						Digital Equipment Corporation
						Software Partner Engineering
						Palo Alto, California
						(415) 617-3601
						"[email protected]"


3457.4As the author of .1...HYDRA::NEWMANChuck Newman, 508/467-5499 (DTN 297), MRO1-3/F26Mon Apr 14 1997 15:188
� Per feedback from the customer, the "work-around" got him him going (thanks 
� Nick!), call closed...

Gee, did I just become Nick?  I've always wanted a second name!

I suppose PeterT should get the real credit, however.

							-- Chuck (Nick?) Newman
3457.5My kingdom for one of them DWIM keyboards...AMCUCS::SWIERKOWSKIQuot homines tot sententiaeMon Apr 14 1997 15:408
Greetings!

  All due apologies!  (Thats what I get for finishing a note after getting
sidelined by a co-worker on a Monday morning - argh!)... (And yes, whoever the
author of the note you spotted is should get credit, but I'm going to quit
before I write any more nonsense replies this morning...), cheers...

		Tony (who_really_wants_a_brain_for_his_birthday) Swierkowski