reproduce (this is a W=1 build):
        # https://github.com/riteshharjani/linux/commit/b1dbe325e1e88d07cf2f245da33393842ff842bc
        git remote add riteshharjani https://github.com/riteshharjani/linux
        git fetch --no-tags riteshharjani notmuch-cover.1708709155.git.john@groves.net
        git checkout b1dbe325e1e88d07cf2f245da33393842ff842bc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/dax/