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 >