12:41 a.m.
Hi Dave,
On Tue, Feb 14, 2012 at 2:16 AM, Dave Anderson <anderson(a)redhat.com> wrote:
----- Original Message -----
> Thanks Dave for looking into the problem i am facing.
>
> as suggested, i tried the things. Please see the output below:
>
> --------------------------------------
> hltncra110731:/home/adil # nm -Bn linux-2.6.32.12-0.7/vmlinux | grep
> _stext
> ffffffff82000198 T _stext
> hltncra110731:/home/adil # cat /proc/kallsyms | grep _stext
> ffffffff82000198 T _stext
> hltncra110731:/home/adil # cat /proc/kallsyms | grep -e
> kernel_config_data -e cpu_possible_mask
> ffffffff8281a660 R cpu_possible_mask
> ffffffff82827aa0 r kernel_config_data
> ffffffff82a16ec0 r __ksymtab_cpu_possible_mask
> ffffffff82a28730 r __kcrctab_cpu_possible_mask
> ffffffff82a322b6 r __kstrtab_cpu_possible_mask
> hltncra110731:/home/adil #
> --------------------------------------
>
> --------------------------------------
> hltncra110731:/home/adil # crash linux-2.6.32.12-0.7/vmlinux
>
> crash 5.0.1
> Copyright (C) 2002-2010 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 (GDB) 7.0
> Copyright (C) 2009 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-unknown-linux-gnu"...
> --------------------------------------
> After the above output the machine got freezed. After waiting for
> sometime, i have to hard reboot the machine. There is no crash log
> generated.
>
> I checked the CONFIG_STRICT_DEVMEM:
> --------------------------------------
> hltncra110731:/home/adil # zcat /proc/config.gz | grep
> CONFIG_STRICT_DEVMEM
> # CONFIG_STRICT_DEVMEM is not set
> hltncra110731:/home/adil #
> --------------------------------------
>
> My running kernel is the one which i have build:
> --------------------------------------
> adil@hltncra110731:~> uname -a
> Linux hltncra110731 2.6.32.12-crash-crash #66 SMP Thu Feb 9 19:58:42
> IST 2012 x86_64 x86_64 x86_64 GNU/Linux
> adil@hltncra110731:~>
> --------------------------------------
Your system is running a kernel with a utsname version
"2.6.32.12-crash-crash",
but you used a file named "linux-2.6.32.12-0.7/vmlinux"? Are they exactly
the same kernel?
Yes they are same.
Also, even though you're back to using crash-5.0.1 again, I
afraid I can't even
speculate as to what would cause the machine to freeze, nor have I ever seen
such a thing happen before. Perhaps the /dev/mem driver read something it
should not have based upon a faulty virtual address? I don't know...
Sorry that was my mistake.
i tried with the new crash binaries and result is same. machine is
freezed and i have to hard reboot.
----------------
hltncra110731:/home/adil # ./crash-6.0.3/crash linux-2.6.32.12-0.7/vmlinux
crash 6.0.3
Copyright (C) 2002-2012 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 (GDB) 7.3.1
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...
----------------
I checked the system, no display on screen and keyboard lights are
blinking and no dump generated. No option but to hard reboot.
>
> Does this problem something related to hardware / bios configuration?
> I am providing the details, if by any chance it helps you:
Sorry no, that doesn't help. If you can't even get crash running
on a live system, then I'm running out of suggestions.
Even i am giving up now :(
i should do my work on that machine where crash / kdump is working.
Thanks a lot for all your inputs and showing your patience on my queries :)
Thanks,
Adil
Dave