s390x
-----
vm
sudo apt install -y qemu-system-s390x
qemu-system-s390x \
-machine s390-ccw-virtio -cpu qemu \
\
-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=::22224-:22,id=net0 \
-device virtio-net,netdev=net0
$ ssh ubuntu@127.0.0.1 -p 22224
$ lsb_release -cs
No LSB modules are available.
noble
$ uname -m
s390x
$ uname -rv
6.5.0-9-generic #9-Ubuntu SMP Fri Oct 6 19:43:35 UTC 2023
kdump-tools
sudo apt update && sudo apt install -y linux-crashdump # No, Yes
sudo sed '/^parameters =/ s/$/ crashkernel=512M/' -i /etc/zipl.conf
sudo zipl && sudo reboot
$ sudo dmesg | grep 'crashkernel.*RAM'
[ 26.793337] setup: Reserving 512MB of memory at 1510MB for
crashkernel (System RAM: 1536MB)
$ sudo kdump-config status
current state : ready to kdump
crashdump
$ echo c | sudo tee /proc/sysrq-trigger
$ find /var/crash
/var/crash
/var/crash/linux-image-6.5.0-9-generic-202311081631.crash
/var/crash/202311081631
/var/crash/202311081631/dump.202311081631
/var/crash/202311081631/dmesg.202311081631
/var/crash/kexec_cmd
/var/crash/kdump_lock
debug symbols
dpkg -l | awk '$2 ~ /linux-image-[0-9.-]+-generic/ { print $2, $3}' \
| while read pkg version; do \
dbgpkg="linux-image-unsigned-${pkg#linux-image-}-dbgsym"; \
arch=$(dpkg --print-architecture); \
wget
"https://launchpad.net/ubuntu/+archive/primary/+files/${dbgpkg}_${version}_${arch}.ddeb";;
\
done
ar p linux-image-unsigned-*-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: 2aa1be60c84 => 2aa1bb029f2 =>
2aa1bb951b2 => 2aa1bc0d668
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 3833600 on cpu 1 not found in PID hash
KERNEL: ./usr/lib/debug/boot/vmlinux-6.5.0-9-generic
DUMPFILE: /var/crash/202311081631/dump.202311081631 [PARTIAL DUMP]
CPUS: 2
DATE: Wed Nov 8 16:22:13 UTC 2023
UPTIME: 00:23:37
LOAD AVERAGE: 0.02, 0.57, 1.58
TASKS: 3
NODENAME: test
RELEASE: 6.5.0-9-generic
VERSION: #9-Ubuntu SMP Fri Oct 6 19:43:35 UTC 2023
MACHINE: s390x (unknown Mhz)
MEMORY: 2 GB
PANIC: "Kernel panic - not syncing: sysrq triggered crash"
PID: 4610
COMMAND: "tee"
TASK: 3833600 [THREAD_INFO: 3833600]
CPU: 1
STATE: TASK_RUNNING (PANIC)
crash> bt
...
#0 [380002179a8] smp_call_ipl_cpu at 11e2fe
#1 [380002179c8] __crash_kexec at 2adfaa
#2 [38000217ac0] panic at 1a8208
#3 [38000217b68] sysrq_reset_seq_param_set at a3f860
#4 [38000217b80] __handle_sysrq at a4055e
#5 [38000217bf8] write_sysrq_trigger at a4100c
#6 [38000217c30] proc_reg_write at 60dc9e
#7 [38000217c80] vfs_write at 5470d4
#8 [38000217d40] ksys_write at 547600
#9 [38000217d90] __do_syscall at e77730
#10 [38000217e98] system_call at e89b58
...
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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