From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.100]) (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 F2D3D136F for ; Sun, 7 Jan 2024 01:39:45 +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="gzVsCGfe" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1704591586; x=1736127586; h=date:from:to:cc:subject:message-id:mime-version; bh=XgnOkhK9fejltKBtlhNb55PRWtAH72xobPj1cDWjITc=; b=gzVsCGfe2t9xh4Lq/6x3WhPcPxzjUiF7zzkahwoRsCoxIEm13DOfEern PaCVB06HDq2j67vstHTuV3A83p2Ag6Xd3gA9wQSkPO4VsiXvRlL5IAXS+ gF6mxgqjxOkyoDXZyHEsezlH6Ms82zLGZBBrPaVgeCF1cg8A/LGf1O1uP Sg/lEWIU+A7EXBsHD1fcbB0XAkuXLNrf/bpX18cD9Za5T6APa0kLHHXd5 XFLIkvquewU58tme0LA3QptnEvD7wIFSEh+BoHO4Yy7aJTeWYi/LF34EY WoHqGa8TlhEaM+S1WQsIiybuilkG8O1aJcLOkLDjIOJIYsgH9nYZoojyg A==; X-IronPort-AV: E=McAfee;i="6600,9927,10945"; a="464094278" X-IronPort-AV: E=Sophos;i="6.04,338,1695711600"; d="scan'208";a="464094278" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2024 17:39:45 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10945"; a="815279318" X-IronPort-AV: E=Sophos;i="6.04,338,1695711600"; d="scan'208";a="815279318" Received: from lkp-server02.sh.intel.com (HELO b07ab15da5fe) ([10.239.97.151]) by orsmga001.jf.intel.com with ESMTP; 06 Jan 2024 17:39:43 -0800 Received: from kbuild by b07ab15da5fe with local (Exim 4.96) (envelope-from ) id 1rMI8b-0003Fs-1o; Sun, 07 Jan 2024 01:39:41 +0000 Date: Sun, 7 Jan 2024 09:39:03 +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: <202401070957.QH0oQjgO-lkp@intel.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 Hi Thomas, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 52b1853b080a082ec3749c3a9577f6c71b1d4a90 commit: f5c1bb2afe93396d41c5cbdcb909b08a75b8dde4 x86/calldepth: Add ret/call counting for debug date: 1 year, 3 months ago config: x86_64-randconfig-r052-20240106 (https://download.01.org/0day-ci/archive/20240107/202401070957.QH0oQjgO-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240107/202401070957.QH0oQjgO-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/202401070957.QH0oQjgO-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