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X-CSE-ConnectionGUID: cOD3511USdugq61i7iHQpw== X-CSE-MsgGUID: ZE2Dx2qxSQOec3Z9JsO3Hw== X-IronPort-AV: E=McAfee;i="6800,10657,11691"; a="75196448" X-IronPort-AV: E=Sophos;i="6.21,271,1763452800"; d="scan'208";a="75196448" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 15:23:55 -0800 X-CSE-ConnectionGUID: CUAbGf2XQoiEsIXl0JWcyQ== X-CSE-MsgGUID: loozeLVSQ6+GqyIqchnzlg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,271,1763452800"; d="scan'208";a="209648920" Received: from igk-lkp-server01.igk.intel.com (HELO afc5bfd7f602) ([10.211.93.152]) by fmviesa006.fm.intel.com with ESMTP; 03 Feb 2026 15:23:53 -0800 Received: from kbuild by afc5bfd7f602 with local (Exim 4.98.2) (envelope-from ) id 1vnPkN-000000003UL-1gbK; Tue, 03 Feb 2026 23:23:51 +0000 Date: Wed, 4 Feb 2026 00:23:15 +0100 From: kernel test robot To: david.laight.linux@gmail.com, Willy Tarreau , Thomas =?iso-8859-1?Q?Wei=DFschuh?= , linux-kernel@vger.kernel.org, Cheng Li Cc: oe-kbuild-all@lists.linux.dev, David Laight Subject: Re: [PATCH 11/12] selftests/nolibc: Increase coverage of printf format tests Message-ID: <202602040045.wtyCVh2h-lkp@intel.com> References: <20260203103000.20206-12-david.laight.linux@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260203103000.20206-12-david.laight.linux@gmail.com> Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20260202] url: https://github.com/intel-lab-lkp/linux/commits/david-laight-linux-gmail-com/tools-nolibc-printf-Move-length-check-to-snprintf-callback/20260203-183919 base: next-20260202 patch link: https://lore.kernel.org/r/20260203103000.20206-12-david.laight.linux%40gmail.com patch subject: [PATCH 11/12] selftests/nolibc: Increase coverage of printf format tests config: s390-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260204/202602040045.wtyCVh2h-lkp@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project f43d6834093b19baf79beda8c0337ab020ac5f17) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260204/202602040045.wtyCVh2h-lkp@intel.com/reproduce) 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 | Closes: https://lore.kernel.org/oe-kbuild-all/202602040045.wtyCVh2h-lkp@intel.com/ All warnings (new ones prefixed by >>): nolibc-test.c:784:9: warning: 'readdir_r' is deprecated [-Wdeprecated-declarations] 784 | ret = readdir_r(dir, &dirent, &result); | ^ /usr/include/dirent.h:188:28: note: 'readdir_r' has been explicitly marked deprecated here 188 | __nonnull ((1, 2, 3)) __attribute_deprecated__; | ^ /usr/include/s390x-linux-gnu/sys/cdefs.h:510:51: note: expanded from macro '__attribute_deprecated__' 510 | # define __attribute_deprecated__ __attribute__ ((__deprecated__)) | ^ nolibc-test.c:982:24: warning: self-comparison always evaluates to false [-Wtautological-compare] 982 | if (st.st_atim.tv_sec != st.st_atime || st.st_atim.tv_nsec > 1000000000) | ^ nolibc-test.c:985:24: warning: self-comparison always evaluates to false [-Wtautological-compare] 985 | if (st.st_mtim.tv_sec != st.st_mtime || st.st_mtim.tv_nsec > 1000000000) | ^ nolibc-test.c:988:24: warning: self-comparison always evaluates to false [-Wtautological-compare] 988 | if (st.st_ctim.tv_sec != st.st_ctime || st.st_ctim.tv_nsec > 1000000000) | ^ nolibc-test.c:1444:54: warning: null passed to a callee that requires a non-null argument [-Wnonnull] 1444 | CASE_TEST(stat_fault); EXPECT_SYSER(1, stat(NULL, &stat_buf), -1, EFAULT); break; | ^~~~ /opt/cross/clang-f43d683409/lib/clang/22/include/__stddef_null.h:26:14: note: expanded from macro 'NULL' 26 | #define NULL ((void*)0) | ^~~~~~~~~~ nolibc-test.c:369:22: note: expanded from macro 'EXPECT_SYSER' 369 | EXPECT_SYSER2(cond, expr, expret, experr, 0) | ^~~~ nolibc-test.c:366:70: note: expanded from macro 'EXPECT_SYSER2' 366 | do { if (!(cond)) result(llen, SKIPPED); else ret += expect_syserr2(expr, expret, experr1, experr2, llen); } while (0) | ^~~~ >> nolibc-test.c:1652:16: warning: unknown attribute 'mat' ignored [-Wunknown-attributes] 1652 | __attribute__((mat(printf, 3, 0))) | ^~~~~~~~~~~~~~~~~ 6 warnings generated. -- >> nolibc-test.c:1652:16: warning: unknown attribute 'mat' ignored [-Wunknown-attributes] 1652 | __attribute__((mat(printf, 3, 0))) | ^~~~~~~~~~~~~~~~~ 1 warning generated. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki