:::::: :::::: Manual check reason: "low confidence bisect report" :::::: Manual check reason: "low confidence static check warning: drivers/md/dm-verity-loadpin.c:16:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]" ::::::
CC: [email protected] BCC: [email protected] CC: [email protected] TO: Matthias Kaehlcke <[email protected]> CC: Kees Cook <[email protected]> tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/kspp head: 27603a606fda0806d7c08914bc976931aa42020e commit: b6c1c5745ccc68ac5d57c7ffb51ea25a86d0e97b [5/11] dm: Add verity helpers for LoadPin :::::: branch date: 4 days ago :::::: commit date: 3 weeks ago config: arm-randconfig-c002-20220731 (https://download.01.org/0day-ci/archive/20220802/[email protected]/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/commit/?id=b6c1c5745ccc68ac5d57c7ffb51ea25a86d0e97b git remote add kees https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git git fetch --no-tags kees for-next/kspp git checkout b6c1c5745ccc68ac5d57c7ffb51ea25a86d0e97b # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross ARCH=arm KBUILD_USERCFLAGS='-fanalyzer -Wno-error' If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <[email protected]> gcc-analyzer warnings: (new ones prefixed by >>) drivers/md/dm-verity-loadpin.c: In function 'is_trusted_verity_target': >> drivers/md/dm-verity-loadpin.c:16:13: warning: use of uninitialized value >> '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 16 | u8 *root_digest; | ^~~~~~~~~~~ 'is_trusted_verity_target': event 1 | | 16 | u8 *root_digest; | | ^~~~~~~~~~~ | | | | | (1) use of uninitialized value '<unknown>' here | drivers/md/dm-verity-loadpin.c:17:22: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 17 | unsigned int digest_size; | ^~~~~~~~~~~ 'is_trusted_verity_target': event 1 | | 17 | unsigned int digest_size; | | ^~~~~~~~~~~ | | | | | (1) use of uninitialized value '<unknown>' here | drivers/md/dm-verity-loadpin.c: In function 'dm_verity_loadpin_is_bdev_trusted': drivers/md/dm-verity-loadpin.c:49:13: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 49 | int srcu_idx; | ^~~~~~~~ 'dm_verity_loadpin_is_bdev_trusted': event 1 | | 49 | int srcu_idx; | | ^~~~~~~~ | | | | | (1) use of uninitialized value '<unknown>' here | vim +16 drivers/md/dm-verity-loadpin.c b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 13 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 14 static bool is_trusted_verity_target(struct dm_target *ti) b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 15 { b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 @16 u8 *root_digest; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 17 unsigned int digest_size; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 18 struct dm_verity_loadpin_trusted_root_digest *trd; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 19 bool trusted = false; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 20 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 21 if (!dm_is_verity_target(ti)) b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 22 return false; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 23 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 24 if (dm_verity_get_root_digest(ti, &root_digest, &digest_size)) b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 25 return false; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 26 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 27 list_for_each_entry(trd, &dm_verity_loadpin_trusted_root_digests, node) { b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 28 if ((trd->len == digest_size) && b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 29 !memcmp(trd->data, root_digest, digest_size)) { b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 30 trusted = true; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 31 break; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 32 } b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 33 } b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 34 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 35 kfree(root_digest); b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 36 b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 37 return trusted; b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 38 } b6c1c5745ccc68 Matthias Kaehlcke 2022-06-27 39 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
