From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BBA118489 for ; Sun, 5 Nov 2023 08:23:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="kx8MXM0M" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1699172621; x=1730708621; h=date:from:to:cc:subject:message-id:mime-version; bh=fYX9k8RdI8NdsMG5qVT0ioFwZw7eWLFc78heJiQIfwc=; b=kx8MXM0MyOfcLFuMDEKM4uFF31v3gcxcI3fbyQbKbT85kUJLZiojzYsS y4JU03gWclDkYKIj6dYyuc7Q62PaadDXPCoMk+OqQwiV08dictqixwPRJ /jiaL3fF9bpf+F8rE0zEA2bkHVVTybut0/DUYGs2mShl7+biU1cDwdo50 QOFOc5Y4O0L1NAv3mWwo4hufZwxxxjNZnJhYz6nknZxMssZTF5ukwO3oT 1VZBtGRAZm3/DjO1+IBa/7Q8SzKMGrb+iwl/Nbj5yqa5NH6utZkaMw4P3 SqOcJbxi6Hv6EwKWAB4m6EcouIXXxG5fg5iaFORi1yTkbW2j3KbPCUQ5R A==; X-IronPort-AV: E=McAfee;i="6600,9927,10884"; a="10669201" X-IronPort-AV: E=Sophos;i="6.03,278,1694761200"; d="scan'208";a="10669201" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Nov 2023 01:23:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10884"; a="791183392" X-IronPort-AV: E=Sophos;i="6.03,278,1694761200"; d="scan'208";a="791183392" Received: from lkp-server01.sh.intel.com (HELO 17d9e85e5079) ([10.239.97.150]) by orsmga008.jf.intel.com with ESMTP; 05 Nov 2023 01:23:37 -0700 Received: from kbuild by 17d9e85e5079 with local (Exim 4.96) (envelope-from ) id 1qzYPv-0005C0-1u; Sun, 05 Nov 2023 08:23:35 +0000 Date: Sun, 5 Nov 2023 16:22:57 +0800 From: kernel test robot To: Thomas Gleixner Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Peter Zijlstra Subject: arch/x86/kernel/callthunks.c:332:35: warning: '%lu' directive writing between 1 and 10 bytes into a region of size 7 Message-ID: <202311051618.RFyLD3DD-lkp@intel.com> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Hi Thomas, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: aea6bf908d730b01bd264a8821159db9463c111c commit: f5c1bb2afe93396d41c5cbdcb909b08a75b8dde4 x86/calldepth: Add ret/call counting for debug date: 1 year, 1 month ago config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20231105/202311051618.RFyLD3DD-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231105/202311051618.RFyLD3DD-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/202311051618.RFyLD3DD-lkp@intel.com/ All warnings (new ones prefixed by >>): arch/x86/kernel/callthunks.c: In function 'callthunks_debugfs_init': >> arch/x86/kernel/callthunks.c:332:35: warning: '%lu' directive writing between 1 and 10 bytes into a region of size 7 [-Wformat-overflow=] 332 | sprintf(name, "cpu%lu", cpu); | ^~~ arch/x86/kernel/callthunks.c:332:31: note: directive argument in the range [0, 4294967294] 332 | sprintf(name, "cpu%lu", cpu); | ^~~~~~~~ arch/x86/kernel/callthunks.c:332:17: note: 'sprintf' output between 5 and 14 bytes into a destination of size 10 332 | sprintf(name, "cpu%lu", cpu); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +332 arch/x86/kernel/callthunks.c 321 322 static int __init callthunks_debugfs_init(void) 323 { 324 struct dentry *dir; 325 unsigned long cpu; 326 327 dir = debugfs_create_dir("callthunks", NULL); 328 for_each_possible_cpu(cpu) { 329 void *arg = (void *)cpu; 330 char name [10]; 331 > 332 sprintf(name, "cpu%lu", cpu); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki