reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-66-g0196afe1-dirty
        # https://github.com/surenbaghdasaryan/linux/commit/7ca367e80232345f471b77b3ea71cf82faf50954
        git remote add surenbaghdasaryan https://github.com/surenbaghdasaryan/linux.git
        git fetch --no-tags surenbaghdasaryan memalloc_prof_v4
        git checkout 7ca367e80232345f471b77b3ea71cf82faf50954
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 SHELL=/bin/bash lib/