panic dump


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From: Roberto Zini <fred@strhold.it>
Subject: Re: Kernel panic
Date: Wed, 24 Jan 2001 09:34:31 +0100 References: <94hjdh$i4n$1@papyrus.erlm.siemens.de> <3A6C7E84.FF39409A@aplawrence.com> <94jean$llg$1@papyrus.erlm.siemens.de> <3A6D6EC0.EB22007B@aplawrence.com>


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Tony Lawrence wrote:

> Pawel Studencki wrote:
> >
> > Hello again,
> >
> > thank You Tony for your answer!
> >
> > >man scodb
> >
> > hmm I'll try to use this tool, perhaps it help me
> >
> > >If you know the driver is causing the panic, it's either the
> > >driver or the hardware.
> >
> > Yeah, You're rigth. I've just began work with this problem, it's not my
> > driver,
> > but it's a specific network card and my friend wrote the driver...
> > We had here a situation, we've seen kernel panic or computer hasn't answered
> > any more.
> > I'll try to find the place in code, which caused this behaviour.

> Scodb and crash can certainly help him, but so can adding
> diagnostics of his own to print pertinent info to syslog, adding
> ioctl calls to get status info, etc.



If you get consisten panics, please modify the /etc/dumpsave
script in order to move the memory dump from the SWAP area to
a regular file (alternatively you can store the image on
tape and then recover it to a file); once you're done, 
follow TA 105619 advices by issuing the following commands :



My Unix and Linux Troubleshooting E-Book will show you how to solve tough system problems!










        crash -d <your_file> -w /tmp/crashout



At the crash prompt type the following commands :



        panic
        trace
        stack
        user
        proc
        u -f
        quit


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Please notice that you can replace <your_file> with /dev/swap
provided that you instructed the system not to delete the
system dump memory image at boot-time.



The /tmp/crashout file contains a lot of useful info you can
use to debug your driver; please keep an eye on the cs:eip
registers. If the "combined" value is always the same then
it's likely the you have a driver problem (but I suppose
you already know that :-).



Best,
Roberto
-- 
---------------------------------------------------------------------
Roberto Zini                                  email : fred@strhold.it
Technical Support Manager -- Strhold Sistemi EDP Reggio Emilia(ITALY)
---------------------------------------------------------------------
"Has anybody around here seen an aircraft carrier?"                
        (Pete "Maverick" Mitchell - Top Gun)



















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