reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-66-g0196afe1
        # https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git/commit/?id=98bf0fbb65226809a8df4d1948c5b6cf0c91590f
        git remote add trace https://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
        git fetch --no-tags trace trace/for-next
        git checkout 98bf0fbb65226809a8df4d1948c5b6cf0c91590f
        # 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 drivers/input/touchscreen/ drivers/media/rc/ drivers/mtd/ drivers/net/ieee802154/ drivers/net/phy/ drivers/net/pse-pd/ drivers/platform/surface/ drivers/platform/x86/ drivers/power/supply/ drivers/slimbus/ drivers/target/tcm_remote/ fs/ubifs/ kernel/ lib/ net/caif/ net/llc/