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---Problem Description---

Ubuntu 16.04.02: crash tool fails with error "cannot find
'cpu_possible_map', 'cpu_present_map', 'cpu_online_map' or
'cpu_active_map' symbols".

---Steps to Reproduce---

1. Install 16.04.02 [ 4.8.0-32-generic ].
2. Configure kdump.
3. Install debug package. 
4. trigger crash.
5. run crash tool on dump captured.

sudo tee /etc/apt/sources.list.d/ddebs.list << EOF
deb http://ddebs.ubuntu.com/ $(lsb_release -cs) main restricted universe 
multiverse
deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-security main restricted 
universe multiverse
deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-updates main restricted 
universe multiverse
deb http://ddebs.ubuntu.com/ $(lsb_release -cs)-proposed main restricted 
universe multiverse
EOF 

sudo apt-get update
sudo apt-get install linux-image-$(uname -r)-dbgsym  



path: /var/crash/201612190432

Logs
===

root@ltc-haba2:/var/crash/201612190432# crash
/usr/lib/debug/boot/vmlinux-4.8.0-32-generic dump.201612190432

crash 7.1.4
Copyright (C) 2002-2015  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012  Fujitsu Limited
Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011  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) 7.6
Copyright (C) 2013 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 "powerpc64le-unknown-linux-gnu"...


crash: PPC64: cannot find 'cpu_possible_map', 'cpu_present_map', 
'cpu_online_map' or 'cpu_active_map' symbols


It appears problem is with System.map-4.8.0-32-generic file 

(gdb) symbol-file System.map-4.8.0-32-generic -readshow
`/boot/System.map-4.8.0-32-generic': can't read symbols: File format not 
recognized.
(gdb) 

crash System.map-4.8.0-32-generic
/usr/lib/debug/boot/vmlinux-4.8.0-32-generic
/var/crash/201612260004/dump.201612260004

crash 7.1.4
Copyright (C) 2002-2015  Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010  IBM Corporation
Copyright (C) 1999-2006  Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012  Fujitsu Limited
Copyright (C) 2006, 2007  VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011  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) 7.6
Copyright (C) 2013 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 "powerpc64le-unknown-linux-gnu"...

                                                                       
crash: PPC64: cannot find 'cpu_possible_map', 'cpu_present_map', 
'cpu_online_map' or 'cpu_active_map' symbols

** Affects: crash (Ubuntu)
     Importance: Undecided
     Assignee: Taco Screen team (taco-screen-team)
         Status: New


** Tags: architecture-ppc64le bugnameltc-150090 severity-high 
targetmilestone-inin16042
-- 
Ubuntu 16.04.02: crash tool fails with error "cannot find 'cpu_possible_map', 
'cpu_present_map', 'cpu_online_map' or 'cpu_active_map' symbols".
https://bugs.launchpad.net/bugs/1652595
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