Hi Stefan, Thank you for the patch! Yet something to improve: [auto build test ERROR on zohar-integrity/next-integrity] [also build test ERROR on linux/master linus/master v5.16-rc4] [cannot apply to next-20211208] [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/Stefan-Berger/ima-Namespace-IMA-... base: https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git next-integrity config: arm64-randconfig-r031-20211208 (https://download.01.org/0day-ci/archive/20211210/202112100051.YVQaPaJf-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/0day-ci/linux/commit/312fc86ebd92ceacb9cb3575f96147213... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Stefan-Berger/ima-Namespace-IMA-with-audit-support-in-IMA-ns/20211209-062017 git checkout 312fc86ebd92ceacb9cb3575f961472132e6cb77 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash security/integrity/ima/ 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 >>): kexec_buffer); ^ security/integrity/ima/ima.h:169:5: note: 'ima_restore_measurement_list' declared here int ima_restore_measurement_list(struct ima_namespace *ns, ^ 1 error generated. vim +150 security/integrity/ima/ima_kexec.c 7b8589cc29e7c3 Mimi Zohar 2016-12-19 136 94c3aac567a9dd Mimi Zohar 2016-12-19 137 /* 94c3aac567a9dd Mimi Zohar 2016-12-19 138 * Restore the measurement list from the previous kernel. 94c3aac567a9dd Mimi Zohar 2016-12-19 139 */ 94c3aac567a9dd Mimi Zohar 2016-12-19 140 void ima_load_kexec_buffer(void) 94c3aac567a9dd Mimi Zohar 2016-12-19 141 { 94c3aac567a9dd Mimi Zohar 2016-12-19 142 void *kexec_buffer = NULL; 94c3aac567a9dd Mimi Zohar 2016-12-19 143 size_t kexec_buffer_size = 0; 94c3aac567a9dd Mimi Zohar 2016-12-19 144 int rc; 94c3aac567a9dd Mimi Zohar 2016-12-19 145 94c3aac567a9dd Mimi Zohar 2016-12-19 146 rc = ima_get_kexec_buffer(&kexec_buffer, &kexec_buffer_size); 94c3aac567a9dd Mimi Zohar 2016-12-19 147 switch (rc) { 94c3aac567a9dd Mimi Zohar 2016-12-19 148 case 0: 94c3aac567a9dd Mimi Zohar 2016-12-19 149 rc = ima_restore_measurement_list(kexec_buffer_size, 94c3aac567a9dd Mimi Zohar 2016-12-19 @150 kexec_buffer); --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org