reproduce (this is a W=1 build):
        # https://github.com/brauner/linux/commit/8d89644075ddc43d0a8ea35a401366e981fe43a0
        git remote add brauner-github https://github.com/brauner/linux.git
        git fetch --no-tags brauner-github work.coredump.socket.tmp
        git checkout 8d89644075ddc43d0a8ea35a401366e981fe43a0
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash fs/