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[Louis Bouchard <louis.bouchard@xxxxxxxxxxxxx>]

** Changed in: makedumpfile (Ubuntu Trusty)
     Assignee: Louis Bouchard (louis-bouchard) => (unassigned)

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https://bugs.launchpad.net/bugs/1469054

Title:
  Unsupported kernel warning while running makedumpfile

Status in makedumpfile package in Ubuntu:
  Fix Released
Status in makedumpfile source package in Trusty:
  Fix Released

Bug description:
  [SRU justification]
  Newer trusty kernels trigger a supportability message from makedumpfile.  The upstream version used on the release do not support those kernels.

  [Impact]
  Warning message when running makedumpfile on kernels higher than 3.11

  [Fix]
  Cherry-pick upstream commits that provide newer kernel support.

  [Test Case]
  1) Using latest daily ISO install 14.04.02 as a Power VM guest.
  2) Install linux-virtual-lts-vivid (hence upgrading kernel to 3.19)
  3) Configure kdump.
  4) Trigger a dump. Dump is captured successfully without the message
     "The kernel version is not supported." being displayed

  [Regression]
  Aside from cosmetic modification in README, the only sensible modification
  it to adapt to the CONFIG_RANDOMIZE_BASE=y kernel parameter to correctly
  fetch memory element. This config is enabled in new kernels.

  [Original description of the problem]

  ---Steps to Reproduce---
  1) Using latest daily ISO install 14.04.02 as a Power VM guest.
  2) Upgrade the kernel to 3.19 level (3.19.0-18-generic)
  3) Configure kdump. A fix is required to configure kdump. Refer to defect (https://bugzilla.linux.ibm.com/show_bug.cgi?id=125712)
  4) Trigger a dump. Dump is captured successfully.

  During collection of dump following warning is shown on the screen. It
  would be good to fix this warning.

  Starting kdump-tools:  * running makedumpfile -c -d 31 /proc/vmcore /var/crash/201506040624/dump-incomplete
  The kernel version is not supported.          <<================
  The created dumpfile may be incomplete.
  Copying data                       : [100.0 %] /

  The dumpfile is saved to /var/crash/201506040624/dump-incomplete.

  makedumpfile Completed.
   * kdump-tools: saved vmcore in /var/crash/201506040624
   * running makedumpfile --dump-dmesg /proc/vmcore /var/crash/201506040624/dmesg.201506040624
  The kernel version is not supported.      <<================
  The created dumpfile may be incomplete.

  The dmesg log is saved to /var/crash/201506040624/dmesg.201506040624.

  makedumpfile Completed.
   * kdump-tools: saved dmesg content in /var/crash/201506040624

  == Comment: #1 - Hari Krishna Bathini <hbathini@xxxxxxxxxx> - 2015-06-04 15:05:41 ==
  makedumpfile tool version, please?

  == Comment: #2 - SACHIN P. SANT <ssant@xxxxxxxxxx> - 2015-06-05 01:30:23 ==
  (In reply to comment #1)
  > makedumpfile tool version, please?

  makedumpfile -v
  makedumpfile: version 1.5.5 (released on 18 Dec 2013)

  == Comment: #6 - SACHIN P. SANT <ssant@xxxxxxxxxx> - 2015-06-24 06:25:13 ==
  Externalizing comment :

  Each makedumpfile version supports kernel versions ranging from OLDEST_VERSION
  till LATEST_VERSION (defined as macros in makedumpfile.h).
  For makedumpfile v1.5.5, the LATEST_VERSION version is defined as 3.11.3.
  As the makedumpfile tool currently shipped with ubuntu is based on v1.5.5 and
  as the kernel version is higher (v3.13/v3.16/v3.19), we see this warning.
  We can deal with this in a couple of ways:

  1. Suggest Canonical to spike the LATEST_VERSION macro to 3.19 reinforcing support for kernel version 3.19.
  2. Suggest Canonical to use the latest makedumpfile version (1.5.8) that supports kernel version 3.19

  Thanks
  Hari

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