reproduce (this is a W=1 build): git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # install um cross compiling tool for clang build # apt-get install binutils-um-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b555cb66583e99158cfef8e91c025252cefae55b git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b555cb66583e99158cfef8e91c025252cefae55b # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=um olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-19 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=um SHELL=/bin/bash arch/um/drivers/ drivers/infiniband/core/ drivers/net/ethernet/mellanox/mlx5/core/ drivers/net/wireless/ath/ath12k/ drivers/net/wireless/intel/iwlwifi/mld/ drivers/net/wireless/realtek/rtlwifi/rtl8723ae/