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X-CSE-ConnectionGUID: DraOrL8dSZ2cew6fb2s8JA== X-CSE-MsgGUID: MEhIbJCQSyWCqB+hvt5TmA== X-IronPort-AV: E=McAfee;i="6800,10657,11688"; a="81438366" X-IronPort-AV: E=Sophos;i="6.21,266,1763452800"; d="scan'208";a="81438366" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Feb 2026 00:54:48 -0800 X-CSE-ConnectionGUID: UuRi6ECgQoWllfYOGcJk8g== X-CSE-MsgGUID: UnBUPBHdRgyFLEFjchYAcA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,266,1763452800"; d="scan'208";a="213323636" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 01 Feb 2026 00:54:47 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vmTEC-00000000egE-0A5c; Sun, 01 Feb 2026 08:54:44 +0000 Date: Sun, 01 Feb 2026 16:54:19 +0800 From: kernel test robot To: oe-kbuild@lists.linux.dev Cc: lkp@intel.com, Julia Lawall Subject: lib/tests/overflow_kunit.c:637:13-14: WARNING: array_size is used later (line 644) to compute the same size Message-ID: <202602011620.h8Kfb019-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev CC: linux-kernel@vger.kernel.org TO: Kees Cook CC: David Gow CC: Rae Moar Hi Kees, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 162b42445b585cd89f45475848845db353539605 commit: db6fe4d61ece24193eb4d94a82d967501d53358c lib: Move KUnit tests into tests/ subdirectory date: 12 months ago :::::: branch date: 15 hours ago :::::: commit date: 12 months ago config: x86_64-randconfig-102-20260201 (https://download.01.org/0day-ci/archive/20260201/202602011620.h8Kfb019-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Reported-by: Julia Lawall | Closes: https://lore.kernel.org/r/202602011620.h8Kfb019-lkp@intel.com/ cocci warnings: (new ones prefixed by >>) >> lib/tests/overflow_kunit.c:637:13-14: WARNING: array_size is used later (line 644) to compute the same size -- >> lib/tests/fortify_kunit.c:211:8-9: ERROR: reference preceded by free on line 208 lib/tests/fortify_kunit.c:213:8-9: ERROR: reference preceded by free on line 211 lib/tests/fortify_kunit.c:216:8-9: ERROR: reference preceded by free on line 213 lib/tests/fortify_kunit.c:218:8-9: ERROR: reference preceded by free on line 216 lib/tests/fortify_kunit.c:220:8-9: ERROR: reference preceded by free on line 218 lib/tests/fortify_kunit.c:223:8-9: ERROR: reference preceded by free on line 220 lib/tests/fortify_kunit.c:226:8-9: ERROR: reference preceded by free on line 223 lib/tests/fortify_kunit.c:228:8-9: ERROR: reference preceded by free on line 226 lib/tests/fortify_kunit.c:230:8-9: ERROR: reference preceded by free on line 228 lib/tests/fortify_kunit.c:233:8-9: ERROR: reference preceded by free on line 230 lib/tests/fortify_kunit.c:236:8-9: ERROR: reference preceded by free on line 233 lib/tests/fortify_kunit.c:242:8-9: ERROR: reference preceded by free on line 236 lib/tests/fortify_kunit.c:247:8-9: ERROR: reference preceded by free on line 242 lib/tests/fortify_kunit.c:252:8-9: ERROR: reference preceded by free on line 247 lib/tests/fortify_kunit.c:258:54-55: ERROR: reference preceded by free on line 252 lib/tests/fortify_kunit.c:377:9-10: ERROR: reference preceded by free on line 375 lib/tests/fortify_kunit.c:375:9-10: ERROR: reference preceded by free on line 377 vim +637 lib/tests/overflow_kunit.c ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 621 ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 622 #define DEFINE_TEST_ALLOC(func, free_func, want_arg, want_gfp, want_node)\ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 623 static void test_ ## func (struct kunit *test, void *arg) \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 624 { \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 625 volatile size_t a = TEST_SIZE; \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 626 volatile size_t b = (SIZE_MAX / TEST_SIZE) + 1; \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 627 void *ptr; \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 628 \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 629 /* Tiny allocation test. */ \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 630 ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 631 KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 632 #func " failed regular allocation?!\n"); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 633 free ## want_arg (free_func, arg, ptr); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 634 \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 635 /* Wrapped allocation test. */ \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 636 ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 @637 a * b); \ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 638 KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 639 #func " unexpectedly failed bad wrapping?!\n"); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 640 free ## want_arg (free_func, arg, ptr); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 641 \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 642 /* Saturated allocation test. */ \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 643 ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 @644 array_size(a, b)); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 645 if (ptr) { \ 617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 646 KUNIT_FAIL(test, #func " missed saturation!\n"); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 647 free ## want_arg (free_func, arg, ptr); \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 648 } \ ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 649 } ca90800a91ba72 lib/test_overflow.c Kees Cook 2018-05-10 650 :::::: The code at line 637 was first introduced by commit :::::: ca90800a91ba723d78ded634d037c1d2df8b54d6 test_overflow: Add memory allocation overflow tests :::::: TO: Kees Cook :::::: CC: Kees Cook -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki