News Group Posts

crash failure

From: bv@wjv.com (Bill Vermillion)
Subject: Re: 'crash' utility failure
References: <00a001c19be0$a6975640$7001a8c0@estacion3>
<20020114020456.J14415@mammoth.ca.sco.com>
<1c9ceead.0201180451.b264d9c@posting.google.com> 
Date: Fri, 18 Jan 2002 19:39:26 GMT

In article <1c9ceead.0201180451.b264d9c@posting.google.com>,
Fernando Ronci <fernando@waycom.com.ar> wrote:
>Bela Lubkin <belal@sco.com> wrote in message news:<20020114020456.J14415@mammoth.ca.sco.com>...
>> Fernando Ronci wrote:

>> > What can be wrong with a dump image after a kernel panic (0x0000000E) of OSR
>> > 5.0.0 that it cannot be read by the 'crash' utility?
>> > I saved the image in /usr/tmp/dump.1201 and when I issue:
>> > crash -d /usr/tmp/dump.1201
>> > 
>> > I get:
>> > dumpfile = /usr/tmp/dump.1201, namelist = /unix, outfile = stdout
>> > Read error on page table entry at 0xfc60ff0

>> > What does the "Read error on page table entry at 0xfc60ff0" error mean?

>> It means that the dump image is corrupt, for crash's purposes.

>> During a panic, the system is in an unstable state (by
>> definition). Not all panics produce clean, readable dumps.

>> It's also possible that it was a clean dump, but you corrupted it
>> when you saved it.

>> > I need to know why my system began panicing at random
>> > intervals (about 3 times a day) after a major hardware
>> > upgrade. I moved the old SCSI HD to a new motherboard with
>> > a PIII 900 MHz, new memory, new NIC, legacy ISA computone
>> > and legacy Adaptec card. After reading Tony's document at
>> > http://www.aplawrence.com/Unixart/trape.shtml I'm almost sure
>> > the culprit is either the memory or the new NIC driver (a very
>> > ordinary Encore PCI card), but 'crash' needs to be able to read
>> > the dump image to confirm that.

The bad dump, the crashes, the errors coming in with different
locations still sound to me like SCSI problems.  You said OLD SCSI
drive above.  But did you move the old controller, and cables, and
everything that worked before, or just the old SCSI drive to a new
computer.  It really smells/feels like cabling termination.  The
higher speed of the new CPU could be causing enough RF type
problems to cause SCSI failure.  Make sure you have a >>ACTIVE<<
terminator on the line.  So often spurious SCSI problem give
messages that make you think the error is elsehwere.

>In this past week, I changed no less than half a dozen PS/2 keyboards,
>some very new, others very old.

I don't know why you keep thinking it is a keyboard error.  The
results you dislayed don't indicate that to me.

>As all of you know OpenServer way far too more than me, I will be
>infinitely thankful if some helps me get rid of this problem. OSR
>5.0.0 is rather old, has memory leak issues and so forth, but I had it
>up and running for almost 6 years and no single panic at all !!. So
>I'm convinced I've got a piece of hardware (probably the keyboard)
>that is interrupting in such a way that OSR 5.0.0 doesn't know how to
>handle and thus panics.

But you had OSR5 up an running on an old motherboard.  I really
suspect that if you put the OSR 5.0.6 on that old system it would
run rock solid.   You are attributing what appears to me to be HW
errors to SW.   Almost invariably that is not the case.

Bill
-- 
Bill Vermillion - bv @ wjv . com
 

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