When trying to debug a bug, it's probably best to use the latest Ubuntu
kernel version, in case it's already fixed.

Are you specifically looking for older versions of kernels and their
dbgsym package?

All prior kernel versions can be found here:

>From that page, select the version.  On the next page, select ppc64el
under the "Builds" section.  The linux-image-VERSION-generic-dbgsym
kernel can be downloaded from that last page.

** Changed in: linux (Ubuntu)
       Status: New => Triaged

** Changed in: linux (Ubuntu)
   Importance: Undecided => Critical

** Changed in: linux (Ubuntu)
       Status: Triaged => In Progress

** Changed in: linux (Ubuntu)
     Assignee: Canonical Kernel Team (canonical-kernel-team) => Joseph 
Salisbury (jsalisbury)

You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.

  [Ubuntu18.04] linux-image-4.13.0-25-generic-dbgsym is not available in
  repo which is required for crash analysis of vmcore

Status in The Ubuntu-power-systems project:
Status in linux package in Ubuntu:
  In Progress

Bug description:
  ---Problem Description---
  No debug kernel deb packages available for 4.13.0-25-generic kernel [Ubuntu 
18.04 ]
  Unable to analyze vmcore generated via crash. 
  ---uname output---
  Linux spoon2 4.13.0-25-generic #29-Ubuntu SMP Mon Jan 8 21:15:55 UTC 2018 
ppc64le ppc64le ppc64le GNU/Linux
  Machine Type = 8335-GTC 
  ---Steps to Reproduce---
  Install 18.04 ppc64el
  upgrade kernel to 4.13.0-25-generic or 4.13.0-17-generic
  try configuring debug repo
  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

  sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
  sudo apt-get update
  sudo apt-get install linux-image-$(uname -r)-dbgsym

  Warning /!\ Be aware that those packages are huge! (~600 MB)

  When installed, the debug kernel can be found under
  /usr/lib/debug/boot/ and crash is started by:

  crash <debug kernel> <crash dump>

  Crash command to analyze vmcore will not work as kernel debuginfo deb package 
is not found in repo . 
  root@spoon2:~# sudo apt-get install linux-image-$(uname -r)-dbgsym
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  E: Unable to locate package linux-image-4.13.0-25-generic-dbgsym
  E: Couldn't find any package by glob 'linux-image-4.13.0-25-generic-dbgsym'
  E: Couldn't find any package by regex 'linux-image-4.13.0-25-generic-dbgsym'
  I was also not able to find this debug symbol for 18.04 kernel. I understand 
that the current 18.04 kernel is old and was removed from the archive. Is it 

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