Hi Stefan, First bad commit (maybe != root cause): tree: git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git master head: 45170345ddc5dc0df553ca30bb6b29ab53cf1264 commit: ec739868f34062e2180260890f44e5ab2ce52443 [6/10] certs: Trigger creation of RSA module signing key if it's not an RSA key config: alpha-allmodconfig (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git/co... git remote add jarkko-linux-tpmdd git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git git fetch --no-tags jarkko-linux-tpmdd master git checkout ec739868f34062e2180260890f44e5ab2ce52443 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): Can't open certs/signing_key.pem for reading, No such file or directory 140361829487872:error:2006D080:BIO routines:BIO_new_file:no such file:../crypto/bio/bss_file.c:76: unable to load certificate --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org