reproduce (this is a W=1 build):
        # https://github.com/morimoto/linux/commit/262df0b88156ac882137cf936a09df668c275f0a
        git remote add morimoto https://github.com/morimoto/linux
        git fetch --no-tags morimoto sound-cleanup-2025-12-04
        git checkout 262df0b88156ac882137cf936a09df668c275f0a

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash kernel/bpf/ sound/soc/codecs/