reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/weiny2/linux-kernel/commit/97663934fa1a6024e94de32c480cece7039db3a1 git remote add weiny2 https://github.com/weiny2/linux-kernel.git git fetch --no-tags weiny2 dcd-2024-03-10 git checkout 97663934fa1a6024e94de32c480cece7039db3a1 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/cxl/core/