Hi Stefan, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 8702f95941c215501826ea8743a8b64b83479209 commit: 28d62d945dedd880f9180fbf5361951f126af7b6 [12082/13550] certs: Trigger creation of RSA module signing key if it's not an RSA key config: s390-buildonly-randconfig-r003-20210625 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 557b101ce714e39438ba1d39c4c50b03e12fcb96) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=28d62d945dedd880f9180fbf5361951f126af7b6 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 28d62d945dedd880f9180fbf5361951f126af7b6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): Can't open certs/signing_key.pem for reading, No such file or directory >> 140327825990912:error:02001002:system library:fopen:No such file or directory:../crypto/bio/bss_file.c:69:fopen('certs/signing_key.pem','r') >> 140327825990912: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@xxxxxxxxxxxx
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