reproduce (this is a W=1 build):
        # https://github.com/scosu/linux-sched/commit/b83eb705701d2a1b492af6ef6e8fa2c403b55cef
        git remote add scosu-sched https://github.com/scosu/linux-sched
        git fetch --no-tags scosu-sched topic/mmap-cap-prot-wip/v6.18
        git checkout b83eb705701d2a1b492af6ef6e8fa2c403b55cef

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-17 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/android/tests/ drivers/counter/ drivers/gpu/drm/bridge/ drivers/gpu/drm/v3d/ drivers/gpu/drm/virtio/ drivers/staging/vc04_services/ drivers/usb/core/ fs/ init/ io_uring/ kernel/ mm/ net/atm/ net/nfc/nci/