used command: sudo crash -c /dev/ttyS0 --cpus 3 ./boot/vmlinux-5.13.8-2-default.xz s390zl21.memory.dump kernel-default and kernel-default-debuginfo for the attached memory.dump available under: https://build.opensuse.org/package/binaries/home:AdaLovelace:branches:openSUSE:Factory:zSystems/kernel-default/openSUSE_Factory_zSystems (user account required)