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Re: crash tool not working




----- 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?

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... 

> 
> 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.

Dave

 

 

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