Hi Ignat, Thank you for the patch! Yet something to improve: [auto build test ERROR on herbert-cryptodev-2.6/master] [also build test ERROR on herbert-crypto-2.6/master linus/master v5.19-rc2 next-20220616] [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/intel-lab-lkp/linux/commits/Ignat-Korchagin/crypto-rsa-implement-Chinese-Remainder-Theorem-for-faster-private-key-operations/20220617-041735 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master config: m68k-defconfig (https://download.01.org/0day-ci/archive/20220617/202206171143.kiPGMh0V-lkp@xxxxxxxxx/config) compiler: m68k-linux-gcc (GCC) 11.3.0 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://github.com/intel-lab-lkp/linux/commit/a81c4debaedb63c8b5af51564fdf596d560a23af git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Ignat-Korchagin/crypto-rsa-implement-Chinese-Remainder-Theorem-for-faster-private-key-operations/20220617-041735 git checkout a81c4debaedb63c8b5af51564fdf596d560a23af # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "mpi_sub" [crypto/rsa_generic.ko] undefined! >> ERROR: modpost: "mpi_mul" [crypto/rsa_generic.ko] undefined! -- 0-DAY CI Kernel Test Service https://01.org/lkp