Public bug reported:
I can not trigger a kdump with my installed hwe kernel (5.8) on 20.04.
5.4 does work.
sudo kdump-config show
DUMP_MODE: kdump
USE_KDUMP: 1
KDUMP_SYSCTL: kernel.panic_on_oops=1
KDUMP_COREDIR: /var/crash
crashkernel addr: 0x98000000
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinuz-5.8.0-44-generic
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to
/var/lib/kdump/initrd.img-5.8.0-44-generic
current state: ready to kdump
kexec command:
/sbin/kexec -p --command-line="BOOT_IMAGE=/boot/vmlinuz-5.8.0-44-generic
root=UUID=2c41957a-476a-4416-bab8-9aa718afdf5c ro quiet splash vt.handoff=7
reset_devices systemd.unit=kdump-tools-dump.service nr_cpus=1 irqpoll nousb
ata_piix.prefer_ms_hyperv=0" --initrd=/var/lib/kdump/initrd.img
/var/lib/kdump/vmlinuz
dmesg | grep crash
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.8.0-44-generic
root=UUID=2c41957a-476a-4416-bab8-9aa718afdf5c ro quiet splash
crashkernel=384M-2G:64M,2G-:1G vt.handoff=7
[ 0.000000] kexec: Reserving the low 1M of memory for crashkernel
[ 0.000000] Reserving 1024MB of memory at 2432MB for crashkernel (System
RAM: 16337MB)
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.8.0-44-generic
root=UUID=2c41957a-476a-4416-bab8-9aa718afdf5c ro quiet splash
crashkernel=384M-2G:64M,2G-:1G vt.handoff=7
[ 0.599000] crashkernel=384M-2G:64M,2G-:1G
[ 4.153854] pstore: Using crash dump compression: deflate
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-44-generic 5.8.0-44.50~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-44-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 24 00:00:29 2021
InstallationDate: Installed on 2018-12-01 (815 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: Upgraded to focal on 2020-04-25 (304 days ago)
** Affects: linux-signed-hwe-5.8 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal wayland-session
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https://bugs.launchpad.net/bugs/1916665
Title:
kdump does not trigger for hwe kernel (works for 5.4)
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