https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols

debian-kernel-dbg-sym.sh

#!/bin/bash
#
# References:
# https://wiki.debian.org/HowToGetABacktrace#Installing_the_debugging_symbols
# https://wiki.debian.org/AutomaticDebugPackages
# sudo apt install kdump-tools crash

set -e

# Ensure lsb_release is available
if ! command -v lsb_release >/dev/null 2>&1; then
    sudo apt-get update && sudo apt-get install -y lsb-release
fi

CODENAME="$(lsb_release -cs)"

# Add the Debian Debug repositories
cat <<EOF | sudo tee /etc/apt/sources.list.d/debian-debug.list
deb http://deb.debian.org/debian-debug/ ${CODENAME}-debug main contrib non-free non-free-firmware
deb http://deb.debian.org/debian-debug/ ${CODENAME}-proposed-updates-debug main contrib non-free non-free-firmware
EOF

sudo apt-get update

# Install matching kernel debug symbols (approx. 600MB–1GB)
sudo apt-get install -y "linux-image-$(uname -r)-dbg"

# Verify location of uncompressed vmlinux image with debug info
dpkg -L "linux-image-$(uname -r)-dbg" | grep vmlinux

# Install kdump related tools
sudo apt-get install -y kdump-tools crash gdb