Re: [Crash-utility] how to analyze a 32bit dump with a 64bit crash
On Tue, 2007-03-27 at 10:17 -0500, Dave Anderson wrote:
Ming Zhang wrote:
> Hi All
>
> My laptop has 64bit fc6 and crash utility. One of the development
> machine is 32bit RHEL4. whenever i try to open the dump generated
> by
> that box, I got a unknown format error. i can analyze the dump with
> the
> crash from that RHEL4, and also my laptop can analyze the dump from
> another 64bit RHEL4.
>
> so my question is how to allow the crash in a 64bit box to open a
> dump
> from a 32bit box?
>
> Thanks!
>
> Ming
>
>
>
Try copying a 32-bit crash utility to the 64-bit laptop,
and running it from there.
i thought about this. could u enlighten us why single crash cannot do
that? implementation limitation or more deeper reason?
Here's an example:
# uname -m
x86_64
# file ./crash
./crash: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for
GNU/Linux 2.2.5, dynamically linked (uses shared libs), not stripped
# ./crash /tmp/vm*
crash 4.0-3.21
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 "i686-pc-linux-gnu"...
KERNEL: /tmp/vmlinux
DEBUG KERNEL: /tmp/vmlinux-2.4.21-1.1931.2.421.ent.debug
DUMPFILE: /tmp/vmcore
CPUS: 1
DATE: Tue Sep 9 18:02:05 2003
UPTIME: 05:04:13
LOAD AVERAGE: 9.96, 10.56, 10.89
TASKS: 72
NODENAME: moe.lab.boston.redhat.com
RELEASE: 2.4.21pre1
VERSION: #3 Tue Sep 9 14:13:17 EDT 2003
MACHINE: i686 (501 Mhz)
MEMORY: 128 MB
PANIC: "Oops: 0002" (check log for details)
PID: 3701
COMMAND: "sh"
TASK: c791c000
CPU: 0
STATE: TASK_RUNNING (PANIC)
crash>
Dave