reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=ce8fd0500b741b3669c246cc604f1f2343cdd6fd
        git remote add herbert-cryptodev-2.6 https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
        git fetch --no-tags herbert-cryptodev-2.6 master
        git checkout ce8fd0500b741b3669c246cc604f1f2343cdd6fd
        # 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