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/jarkko/linux-tpmdd.git/commit/?id=79e909153c0a5ac21c2c5c0d4eac9229b3408178 git remote add jarkko-tpmdd https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git git fetch --no-tags jarkko-tpmdd tpm2key-v8 git checkout 79e909153c0a5ac21c2c5c0d4eac9229b3408178 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ crypto/asymmetric_keys/