[Crash-utility] Crash fails with the error: "crash: read error: kernel virtual address:..."

[Adhiraj Joshi]

Hi All,

On my x86 machine with fedora 10, I get an error which says: "crash: read
error: kernel virtual address:...". The running kernel is not the Fedora 10
kernel, I have installed a latest vanilla kernel (2.6.27.12) on my machine.

On googling, I found that someone has reported a similar problem but which
was on Fedora kernel and x86_64 arch. Here is the link to that bug:
https://bugzilla.redhat.com/show_bug.cgi?id=237383

In my case, this is the output from the crash command:

[root at maveric ~]# crash /lib/modules/`uname -r`/build/vmlinux
crash 4.0-7
Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008  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, 2007  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"...

crash: read error: kernel virtual address: c08b0ae8  type:
"cpu_possible_map"
WARNING: cannot read cpu_possible_map
crash: read error: kernel virtual address: c0801a94  type: "cpu_present_map"
WARNING: cannot read cpu_present_map
crash: read error: kernel virtual address: c080155c  type: "cpu_online_map"
WARNING: cannot read cpu_online_map
crash: read error: kernel virtual address: c08dd700  type: "xtime"
[root at maveric ~]#

This is the "uname -a" output:
"Linux maveric 2.6.27.12-adhi #1 SMP Fri Feb 20 22:13:54 IST 2009 i686 i686
i386 GNU/Linux"

Does anyone has any idea on this?

Thanks and regards,
Adhiraj Joshi.
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