Public bug reported:
---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
https://wiki.ubuntu.com/Kernel/CrashdumpRecipe
http://ddebs.ubuntu.com/pool/main/l/linux/
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/ $(lsb_release -cs)-proposed main restricted
universe multiverse
EOF
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
sudo apt-get update
sudo apt-get install linux-image-$(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'
root@spoon2:~#
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
correct?
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New
** Tags: architecture-ppc64le bugnameltc-163794 severity-critical
targetmilestone-inin1804
** Tags added: architecture-ppc64le bugnameltc-163794 severity-critical
targetmilestone-inin1804
** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage
(ubuntu-power-triage)
** Package changed: ubuntu => linux (Ubuntu)
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https://bugs.launchpad.net/bugs/1744791
Title:
[Ubuntu18.04] linux-image-4.13.0-25-generic-dbgsym is not available in
repo which is required for crash analysis of vmcore
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