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[Chris J Arges <1460941@xxxxxxxxxxxxxxxxxx>]

Sponsored for T/U/V.

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https://bugs.launchpad.net/bugs/1460941

Title:
  arm64: crash: invalid/unsupported page size: 6144

Status in crash package in Ubuntu:
  Fix Released
Status in crash source package in Trusty:
  New
Status in crash source package in Utopic:
  New
Status in crash source package in Vivid:
  New
Status in crash source package in Wily:
  Fix Released

Bug description:
  [Impact]

  crash in ARM64 can't be used on ubuntu trusty, utopic and vivid when
  debugging a new kernel like 4.1-rc+

  [Test Case]

  sudo crash ~/vmlinux
  crash will exit with failure log of 'crash: invalid/unknown page size: 
  6144', see detailed steps in [1].

  [Regression Potential]

  The proposed patch has been merged upstream, so there shouldn't be
  potential regression.

  Also These changes are to code that only gets compiled on arm64, so
  there's no risk to other architectures.

  [Other Info]

  After running crash from trusty, the failure log in [1] can be
  observed.

  Then I built crash from wily directly, the similar failure[2] can be
  observed too.

  [1] failure log
  ubuntu@am2:~/git/crash-wily$ sudo crash ~/vmlinux

  crash 7.0.3
  Copyright (C) 2002-2013  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.

  crash: invalid/unknown page size: 6144

  [2]
  ubuntu@am2:~/git/crash-wily$ sudo ./crash ~/vmlinux
  [sudo] password for ubuntu:

  crash 7.0.8
  Copyright (C) 2002-2014  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.

  crash: invalid/unsupported page size: 6144

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