Hi Michal, Thank you for the patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on s390/features linus/master jeyu/modules-next v5.16 next-20220110] [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/Michal-Suchanek/KEXEC_SIG-with-a... base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20220111/202201110303.sLPF0o29-lk...) compiler: arceb-elf-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/cc363ca7724d96c534c176b8ed248336f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Michal-Suchanek/KEXEC_SIG-with-appended-signature/20220110-215157 git checkout cc363ca7724d96c534c176b8ed248336f562b7ae # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arc SHELL=/bin/bash 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 >>): kernel/module_signing.c: In function 'verify_appended_signature': 33 | ret = mod_parse_sig(data, len, &sig_len, key_being_used_for[purpose]); | ^~~ | | | long unsigned int * In file included from kernel/module_signing.c:11: include/linux/module_signature.h:45:45: note: expected 'size_t *' {aka 'unsigned int *'} but argument is of type 'long unsigned int *' 45 | int mod_parse_sig(const void *data, size_t *len, size_t *sig_len, const char *name); | ~~~~~~~~^~~ kernel/module_signing.c:33:40: error: passing argument 3 of 'mod_parse_sig' from incompatible pointer type [-Werror=incompatible-pointer-types] 33 | ret = mod_parse_sig(data, len, &sig_len, key_being_used_for[purpose]); | ^~~~~~~~ | | | long unsigned int * In file included from kernel/module_signing.c:11: include/linux/module_signature.h:45:58: note: expected 'size_t *' {aka 'unsigned int *'} but argument is of type 'long unsigned int *' 45 | int mod_parse_sig(const void *data, size_t *len, size_t *sig_len, const char *name); | ~~~~~~~~^~~~~~~ cc1: some warnings being treated as errors -- security/integrity/ima/ima_modsig.c: In function 'ima_read_modsig': 47 | rc = mod_parse_sig(buf, &buf_len, &sig_len, func_tokens[func]); | ^~~~~~~~ | | | long unsigned int * In file included from security/integrity/ima/ima_modsig.c:12: include/linux/module_signature.h:45:45: note: expected 'size_t *' {aka 'unsigned int *'} but argument is of type 'long unsigned int *' 45 | int mod_parse_sig(const void *data, size_t *len, size_t *sig_len, const char *name); | ~~~~~~~~^~~ security/integrity/ima/ima_modsig.c:47:43: error: passing argument 3 of 'mod_parse_sig' from incompatible pointer type [-Werror=incompatible-pointer-types] 47 | rc = mod_parse_sig(buf, &buf_len, &sig_len, func_tokens[func]); | ^~~~~~~~ | | | long unsigned int * In file included from security/integrity/ima/ima_modsig.c:12: include/linux/module_signature.h:45:58: note: expected 'size_t *' {aka 'unsigned int *'} but argument is of type 'long unsigned int *' 45 | int mod_parse_sig(const void *data, size_t *len, size_t *sig_len, const char *name); | ~~~~~~~~^~~~~~~ cc1: some warnings being treated as errors vim +/mod_parse_sig +33 kernel/module_signing.c 16 17 /** 18 * verify_appended_signature - Verify the signature on a module 19 * @data: The data to be verified 20 * @len: Size of @data. 21 * @trusted_keys: Keyring to use for verification 22 * @purpose: The use to which the key is being put 23 */ 24 int verify_appended_signature(const void *data, unsigned long *len, 25 struct key *trusted_keys, 26 enum key_being_used_for purpose) 27 { 28 unsigned long sig_len; 29 int ret; 30 31 pr_devel("==>%s %s(,%lu)\n", __func__, key_being_used_for[purpose], *len); 32 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org