Hi Deven, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on dm/for-next] [also build test WARNING on pcmoore-selinux/next linus/master v5.8-rc5] [cannot apply to security/next-testing next-20200717] [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/Deven-Bowers/Integrity-Policy-En... base: https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next config: i386-debian-10.3 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): In file included from drivers/md/dm-verity-target.c:18: drivers/md/dm-verity-verify-sig.h:37:5: warning: no previous prototype for 'verity_verify_root_hash' [-Wmissing-prototypes] 37 | int verity_verify_root_hash(const struct dm_verity *v) | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/md/dm-verity-verify-sig.h:42:6: warning: no previous prototype for 'verity_verify_is_sig_opt_arg' [-Wmissing-prototypes] 42 | bool verity_verify_is_sig_opt_arg(const char *arg_name) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/md/dm-verity-verify-sig.h:47:5: warning: no previous prototype for 'verity_verify_sig_parse_opt_args' [-Wmissing-prototypes] 47 | int verity_verify_sig_parse_opt_args(struct dm_arg_set *as, struct dm_verity *v, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 53 | void verity_verify_dtr(struct dm_verity *v) | ^~~~~~~~~~~~~~~~~ drivers/md/dm-verity-target.c: In function 'verity_ctr': drivers/md/dm-verity-target.c:988:8: warning: variable 'root_hash_digest_to_validate' set but not used [-Wunused-but-set-variable] 988 | char *root_hash_digest_to_validate; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/verity_verify_dtr +53 drivers/md/dm-verity-verify-sig.h 52 54 { 55 } 56 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org