reproduce (this is a W=1 build):
        git remote add arm git://git.armlinux.org.uk/~rmk/linux-arm.git
        git fetch arm for-next
        git checkout arm/for-next
        b4 shazam https://lore.kernel.org/r/20250919122321.946462-3-abarnas@google.com
        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=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-15.1.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 prepare