reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu git remote add ras https://git.kernel.org/pub/scm/linux/kernel/git/ras/ras.git git fetch ras edac-for-next git checkout ras/edac-for-next b4 shazam https://lore.kernel.org/r/20241230055849.11183-6-shubhrajyoti.datta@amd.com # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 ARCH=arm64