reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-47-g365b9520-dirty
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-mainline
        git checkout 9c09afab6e348ac0e11d63c6680819ad2103dfc3
        # 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 fs/fuse/