Hi Hongbo, Thank you for the patch! Yet something to improve: [auto build test ERROR on cryptodev/master] [also build test ERROR on crypto/master security/next-testing linus/master v5.12-rc6 next-20210407] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Hongbo-Li/x509-add-support-for-rsa-pss/20210407-115738 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master config: x86_64-rhel-8.3-kselftests (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/7ae494f4046fa7980cf2ee1b40f175355609a9da git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hongbo-Li/x509-add-support-for-rsa-pss/20210407-115738 git checkout 7ae494f4046fa7980cf2ee1b40f175355609a9da # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> make[2]: *** No rule to make target 'crypto/rsa-psspad.o', needed by 'crypto/built-in.a'. make[2]: Target '__build' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org