reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/avpatel/linux/commit/cd5254a9040cbe3d816613c0bb2ff72add5b78b6
        git remote add avpatel https://github.com/avpatel/linux.git
        git fetch --no-tags avpatel riscv_defconfig_v1
        git checkout cd5254a9040cbe3d816613c0bb2ff72add5b78b6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/acpi/apei/