Tested in dump file form in s390x; working.

s390x
-----

vm

	SERIES=noble
	ARCH=s390x
	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-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
	6.6.0-14-generic #14-Ubuntu SMP Thu Nov 30 09:46:34 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'
	[    1.176382] setup: Reserving 512MB of memory at 1509MB 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/kexec_cmd
	/var/crash/kdump_lock
	/var/crash/linux-image-6.6.0-14-generic-202401091639.crash
	/var/crash/202401091639
	/var/crash/202401091639/dmesg.202401091639
	/var/crash/202401091639/dump.202401091639

debug symbols

	dpkg -l | awk '$2 ~ /linux-image-[0-9.-]+-generic/ { print $2, $3}' \
	  | while read pkg version; do \
	      dbgpkg="linux-image-${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-*-dbgsym_*.ddeb data.tar.xz | tar xJ --wildcards './usr/lib/debug/boot/vmlinux-*-generic'

crash

	sudo add-apt-repository -y ppa:mfo/lp2047861-noble-crash && sudo apt install -y crash

	# dpkg -s crash | grep Version:
	Version: 8.0.4-1ubuntu1

	# crash ./usr/lib/debug/boot/vmlinux-*-generic /var/crash/*/dump.*
	...

	      KERNEL: ./usr/lib/debug/boot/vmlinux-6.6.0-14-generic
	    DUMPFILE: /var/crash/202401091639/dump.202401091639  [PARTIAL DUMP]
		CPUS: 2
		DATE: Tue Jan  9 16:36:47 UTC 2024
	      UPTIME: 00:06:08
	LOAD AVERAGE: 2.56, 2.20, 1.11
	       TASKS: 148
	    NODENAME: test
	     RELEASE: 6.6.0-14-generic
	     VERSION: #14-Ubuntu SMP Thu Nov 30 09:46:34 UTC 2023
	     MACHINE: s390x  (unknown Mhz)
	      MEMORY: 2 GB
	       PANIC: "Kernel panic - not syncing: sysrq triggered crash"
		 PID: 1615
	     COMMAND: "tee"
		TASK: 4bd2400  [THREAD_INFO: 4bd2400]
		 CPU: 0
	       STATE: TASK_RUNNING (PANIC)

	crash> bt
	PID: 1615     TASK: 4bd2400           CPU: 0    COMMAND: "tee"
	 LOWCORE INFO:
	  -psw      : 0x0400c00180000000 0x0000000000126220
	  -function : __do_machine_kdump at 126220
	  -prefix   : 0x026e8000
	  -cpu timer: 0x7ffffea07b16f64d
	  -clock cmp: 0x796343ea7b0db800
	  -general registers:
	     0x00000000026bd400 0x00000000026bd400
	     0x0000000000126220 0x000000007f239800
	     000000000000000000 000000000000000000
	     0x000000007f239800 0x0000000001743958
	     0x000000007f239800 000000000000000000
	     0x0000000001743c90 0x0000000000000002
	     0x000003ff960d9c80 0x0000000000fa24d0
	     0x00000000001263ee 0x00000000026b7db8
	  -access registers:
	     0x000003ff 0x962fa760 0000000000 0000000000
	     0000000000 0000000000 0000000000 0000000000
	     0000000000 0000000000 0000000000 0000000000
	     0000000000 0000000000 0000000000 0000000000
	  -control registers:
	     0x0000000014166a10 0x00000000020ec007
	     0x00000000000ff140 000000000000000000
	     0x000000000000ffff 0x00000000000ff140
	     0x0000000030000000 0x000000000474c1c7
	     0x0000000000008000 000000000000000000
	     000000000000000000 000000000000000000
	     000000000000000000 0x00000000020ec007
	     0x00000000db000000 0x00000000000ff000
	  -floating point registers:
	     0x000002aa1fe4e383 0x5554462d38004c43
	     0x000003ff960db4c3 0x0000000000000005
	     0x75746638000daa08 0x75746638000daa08
	     0x000003ff960da9d8 0x0000000000000004
	     0x0000000000000002 0x000002aa1644b820
	     0x000003ffe8bf79d8 0x000002aa1644cfd0
	     000000000000000000 000000000000000000
	     0x000002aa08d225c8 0x000003ffced7942f

	 #0 [026b7e20] __machine_kexec at 126510
	 #1 [026b7e98] pcpu_delegate at 11c74a
	 #2 [38000367978] smp_call_ipl_cpu at 11e13e
	 #3 [38000367998] __crash_kexec at 2b4c8a
	 #4 [38000367a90] panic at 1ab198
	 #5 [38000367b38] sysrq_reset_seq_param_set at a618d0
	 #6 [38000367b50] __handle_sysrq at a62644
	 #7 [38000367bc8] write_sysrq_trigger at a63104
	 #8 [38000367c00] proc_reg_write at 625136
	 #9 [38000367c50] vfs_write at 55b7e4
	#10 [38000367d10] ksys_write at 55bd10
	#11 [38000367d60] __do_syscall at ea75d8
	#12 [38000367e98] system_call at eb9708
	 PSW:  0705200180000000 000003ff9601715a (user space)
	 GPRS: 0000000000000150 0000000000000004 ffffffffffffffda 000003ffe8bf79d8
	       0000000000000002 000003ff960e1ea8 000003ff960d91e0 0000000000000002
	       0000000000000002 000002aa1fe4e300 000003ffe8bf79d8 0000000000000002
	       000003ff960d9c80 0000000000000001 000003ff95f9369c 000003ffe8bf75c0
	crash> quit