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17 Apr 2024 02:48:41 +0000 Date: Wed, 17 Apr 2024 10:42:07 +0800 From: Yujie Liu To: Andrew Morton CC: Edward Liaw , , "Linux Memory Management List" Subject: Re: [linux-next:master 5507/6266] ../kselftest_harness.h:1167:9: warning: ignoring return value of 'asprintf' declared with attribute 'warn_unused_result' Message-ID: References: <202404161023.K0EsnDmF-lkp@intel.com> <20240416114439.038054b9c33986a13f4757c7@linux-foundation.org> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20240416114439.038054b9c33986a13f4757c7@linux-foundation.org> X-ClientProxiedBy: SI2PR01CA0042.apcprd01.prod.exchangelabs.com (2603:1096:4:193::23) To SA1PR11MB8393.namprd11.prod.outlook.com (2603:10b6:806:373::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA1PR11MB8393:EE_|SN7PR11MB6602:EE_ X-MS-Office365-Filtering-Correlation-Id: b2e9e468-aaea-46ce-9baf-08dc5e88e401 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 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Z6sgl6BHsPh3ZBzneKkOK/nesNd4RQGt8R4y3t8T7sydYtqQ= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Apr 16, 2024 at 11:44:39AM -0700, Andrew Morton wrote: > On Tue, 16 Apr 2024 14:35:18 +0800 kernel test robot wrote: > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > > head: 6bd343537461b57f3efe5dfc5fc193a232dfef1e > > commit: c19377e23d4cb45f69c5d226ae3436f7fa818c8f [5507/6266] selftests/harness: remove use of LINE_MAX > > compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240416/202404161023.K0EsnDmF-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/r/202404161023.K0EsnDmF-lkp@intel.com/ > > > > All warnings (new ones prefixed by >>): > > > > In file included from tls.c:24: > > ../kselftest_harness.h: In function '__run_test': > > >> ../kselftest_harness.h:1167:9: warning: ignoring return value of 'asprintf' declared with attribute 'warn_unused_result' [-Wunused-result] > > 1167 | asprintf(&test_name, "%s%s%s.%s", f->name, > > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > 1168 | variant->name[0] ? "." : "", variant->name, t->name); > > | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Thanks. How does this look? > > --- a/tools/testing/selftests/kselftest_harness.h~selftests-harness-remove-use-of-line_max-fix-fix > +++ a/tools/testing/selftests/kselftest_harness.h > @@ -1163,8 +1163,12 @@ void __run_test(struct __fixture_metadat > t->trigger = 0; > memset(t->results->reason, 0, sizeof(t->results->reason)); > > - asprintf(&test_name, "%s%s%s.%s", f->name, > - variant->name[0] ? "." : "", variant->name, t->name); > + if (asprintf(&test_name, "%s%s%s.%s", f->name, > + variant->name[0] ? "." : "", variant->name, t->name) == -1) { > + ksft_print_msg("ERROR ALLOCATING MEMORY\n"); > + t->exit_code = KSFT_FAIL; > + _exit(t->exit_code); > + } > > ksft_print_msg(" RUN %s ...\n", test_name); > > _ It fixes the warning for me. Thanks. Tested-by: Yujie Liu