[Crash-utility] Seek error type: "tss_struct ist array" problem on8-CPU AMD system

[Jansen, Frank]

> -----Original Message-----
> From: crash-utility-bounces at redhat.com 
> [mailto:crash-utility-bounces at redhat.com] On Behalf Of Dave Anderson
> Sent: Monday, May 14, 2007 12:22 PM
> To: Discussion list for crash utility usage, maintenance and 
> development
> Subject: Re: [Crash-utility] Seek error type: "tss_struct ist 
> array" problem on8-CPU AMD system
> 
> "Jansen, Frank" wrote:
> 
> > Looking through the changelog, I saw that the 'tss_struct ist array'
> > problem on 8-CPU systems had been addressed previously.  
> However, I'm 
> > running into this issue on an AMD server with crash 4.0-4.1 
> and RHEL4 
> > Update 5 (2.6.9-55.Elsmp).
> >
> > The output from the crash invocation is the following:
> > +++
> > [root at well-rhel4564-ps3 dump]# /fpj/crash System_map.2.6.9-55.ELsmp 
> > vmlinux.debug.2.6.9-55.ELsmp ap3.1178895173.dmp
> >
> > crash 4.0-4.1
> > Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007  Red Hat, Inc.
> > Copyright (C) 2004, 2005, 2006  IBM Corporation Copyright (C) 
> > 1999-2006  Hewlett-Packard Co Copyright (C) 2005, 2006  Fujitsu 
> > Limited Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
> > Copyright (C) 2005  NEC Corporation
> > Copyright (C) 1999, 2002  Silicon Graphics, Inc.
> > Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc.
> > This program is free software, covered by the GNU General Public 
> > License, and you are welcome to change it and/or distribute 
> copies of 
> > it under certain conditions.  Enter "help copying" to see the 
> > conditions.
> > This program has absolutely no warranty.  Enter "help warranty" for 
> > details.
> >
> > GNU gdb 6.1
> > Copyright 2004 Free Software Foundation, Inc.
> > GDB is free software, covered by the GNU General Public 
> License, and 
> > you are welcome to change it and/or distribute copies of it under 
> > certain conditions.
> > Type "show copying" to see the conditions.
> > There is absolutely no warranty for GDB.  Type "show warranty" for 
> > details.
> > This GDB was configured as "x86_64-unknown-linux-gnu"...
> >
> > crash: seek error: kernel virtual address: 10408119e84  type:
> > "tss_struct ist array"
> > ---
> >
> > The server is a 4 dual-core AMD (2.8GHz) with 64GB.
> >
> > Any insights into how best to troubleshoot this are much 
> appreciated.
> >
> > Thanks,
> >
> > Frank Jansen
> 
> I doubt this has anything to do with the 8-cpu issue.
>
I think that you are right, as the crash -d7 seems to indicate that the
dump may be incomplete(cf. attached crash -d7 output). 

> A few questions:
> 
> Is this an RHEL4 derivative kernel of some kind?  I ask 
> because you're using a system.map file as an argument.
>
It's a standard kernel, to which we add a couple of our (Egenera)
drivers.  I can read the dump without the system map argument, but was
just going off the data provided to me by the person that ran into the
problem.
 
> Anyway, this dumpfile is Egenera's LKCD off-shoot, correct?
> Since you got an "lseek" error, the question is whether (1) 
> the virtual address of 10408119e84 is legitimate, and (2) 
> whether it is included in your dumpfile.

I think that the virtual address is legitimate, but that the dump is
incomplete at this point.

> 
> What does "crash -d7 ..." show?

See attached output

> 
> Does crash work on the live system?
Yes, it works 
> 
> Dave
> 
> 
Thank you again!
Frank
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