ppc64el
-------
vm
SERIES=noble
ARCH=ppc64el
DISK=${SERIES}_${ARCH}.qcow2
wget
https://cloud-images.ubuntu.com/$SERIES/current/${SERIES}-server-cloudimg-${ARCH}.img
qemu-img create -F qcow2 -b ${SERIES}-server-cloudimg-${ARCH}.img -f
qcow2 $DISK 8G
sudo apt install -y qemu-system-ppc
qemu-system-ppc64 \
-machine pseries -cpu POWER9 \
\
-smp cpus=2 -m 2048 \
-nodefaults -no-user-config \
-nographic -serial stdio \
\
-drive file=$DISK,if=none,id=drive0 \
-device virtio-blk,drive=drive0 \
\
-drive file=test-cidata.iso,media=cdrom \
\
-netdev user,hostfwd=::22223-:22,id=net0 \
-device virtio-net,netdev=net0
$ ssh ubuntu@127.0.0.1 -p 22223
$ lsb_release -cs
No LSB modules are available.
noble
$ uname -m
ppc64le
$ uname -rv
6.5.0-9-generic #9-Ubuntu SMP Fri Oct 6 20:21:54 UTC 2023
kdump-tools
sudo apt update && sudo apt install -y linux-crashdump # No, Yes
sudo sed 's/crashkernel=[^" ]\+/crashkernel=512M/' -i
/etc/default/grub.d/kdump-tools.cfg
sudo update-grub && sudo reboot
...
$ sudo dmesg | grep 'crashkernel.*RAM'
[ 0.000000] Reserving 512MB of memory at 512MB for crashkernel
(System RAM: 2048MB)
$ sudo kdump-config status
current state : ready to kdump
crashdump
$ echo c | sudo tee /proc/sysrq-trigger
$ find /var/crash
/var/crash
/var/crash/kexec_cmd
/var/crash/linux-image-6.5.0-9-generic-202311081556.crash
/var/crash/_usr_bin_mandb.6.crash
/var/crash/202311081556
/var/crash/202311081556/dump.202311081556
/var/crash/202311081556/dmesg.202311081556
/var/crash/kdump_lock
debug symbols
dpkg -l | awk '$2 ~ /linux-image-[0-9.-]+-generic/ { print $2, $3}' \
| while read pkg version; do \
dbgpkg="${pkg}-dbgsym"; \
arch=$(dpkg --print-architecture); \
wget
"https://launchpad.net/ubuntu/+archive/primary/+files/${dbgpkg}_${version}_${arch}.ddeb";;
\
done
ar p linux-image-*-dbgsym_*.ddeb data.tar.xz | tar xJ
--wildcards './usr/lib/debug/boot/vmlinux-*-generic'
crash (old)
# dpkg -s crash | grep Version:
Version: 8.0.2-1ubuntu1
# crash ./usr/lib/debug/boot/vmlinux-*-generic /var/crash/*/dump.*
...
crash: invalid structure member offset: module_core_size
FILE: kernel.c LINE: 3781 FUNCTION: module_init()
[/usr/bin/crash] error trace: 122094283e0 => 12208f5f830 =>
12209018148 => 122090b1ce0
crash (new)
sudo add-apt-repository -y ppa:mfo/noble-crash-v2 && sudo apt
install -y crash
$ dpkg -s crash | grep Version:
Version: 8.0.3+ds1-3ubuntu1
# crash ./usr/lib/debug/boot/vmlinux-*-generic /var/crash/*/dump.*
...
WARNING: active task c00000000a233200 on cpu 1 not found in PID hash
KERNEL: ./usr/lib/debug/boot/vmlinux-6.5.0-9-generic
DUMPFILE: /var/crash/202311081556/dump.202311081556 [PARTIAL DUMP]
CPUS: 2
DATE: Wed Nov 8 15:50:40 UTC 2023
UPTIME: 00:23:57
LOAD AVERAGE: 0.48, 1.10, 1.68
TASKS: 3
NODENAME: test
RELEASE: 6.5.0-9-generic
VERSION: #9-Ubuntu SMP Fri Oct 6 20:21:54 UTC 2023
MACHINE: ppc64le (1000 Mhz)
MEMORY: 2 GB
PANIC: "Kernel panic - not syncing: sysrq triggered crash"
PID: 4548
COMMAND: "tee"
TASK: c00000000a233200 [THREAD_INFO: c00000000a233200]
CPU: 1
STATE: TASK_RUNNING (PANIC)
crash> bt
PID: 4548 TASK: c00000000a233200 CPU: 1 COMMAND: "tee"
R0: c0000000002fce48 R1: c000000004dbb890 R2: c000000002102600
R3: c000000004dbb8a8 R4: 0000000000000000 R5: 0000000000000000
R6: c000000004dbba58 R7: 0000000000000000 R8: 0000000000000001
R9: c00000000b81bc00 R10: 0000000000000000 R11: 0000000000000000
R12: 0000000000000000 R13: c00000007fffee80 R14: 0000000000000000
R15: 0000000000000001 R16: ffffffffffffdf8c R17: ffffffffffffdfe4
R18: 0000000000000003 R19: 0000000000000000 R20: ffffffffffffdf98
R21: ffffffffffffdfa8 R22: 00007fffc3c27840 R23: 00007ef5bb071a60
R24: c000000003a61960 R25: 0000000000000000 R26: 0000000000000004
R27: c000000003872f08 R28: c000000003c7ace0 R29: c000000003c7ad20
R30: c000000003cd2600 R31: 0000000000000000
NIP: c0000000002fbfe4 MSR: 8000000000009033 OR3: 0000000000000000
CTR: 0000000000000000 LR: c0000000002fce48 XER: 0000000020040004
CCR: 0000000024008200 MQ: 0000000000000001 DAR: 0000000000000000
DSISR: 0000000000000000 Syscall Result: 0000000000000000
[NIP : crash_setup_regs+84]
[LR : __crash_kexec+152]
#0 [c000000004dbb890] crash_setup_regs at c0000000002fbfe4
crash> quit
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to crash in Ubuntu.
https://bugs.launchpad.net/bugs/2042357
Title:
Merge crash 8.0.3+ds1-3 into Noble
Status in crash package in Ubuntu:
In Progress
Status in crash package in Debian:
Fix Released
Bug description:
Work in progress; rebasing on 8.0.3+ds1-3, and testing.
...
$ rmadison -a source crash | grep noble
crash | 8.0.2-1ubuntu1 | noble | source
$ rmadison -a source crash -u debian | grep 'unstable '
crash | 8.0.2-1 | unstable | source
crash | 8.0.3+ds1-3 | unstable | source
...
Debian bugs:
https://bugs.debian.org/1054805
Please update crash to 8.0.3
https://bugs.debian.org/1055117
FTBFS: crash 8.0.3-1 is missing gdb-10.2.tar.gz
...
Docs:
https://github.com/canonical/ubuntu-maintainers-handbook/blob/main/PackageMerging.md
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/crash/+bug/2042357/+subscriptions
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