reproduce (this is a W=1 build):
        git checkout 2e52eb74463f15c745d64948cedfaee722d6268c
        # 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 drivers/ fs/ sound/