From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C17E8C433EF for ; Wed, 9 Mar 2022 15:49:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 58DD48D0005; Wed, 9 Mar 2022 10:49:36 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 545D58D0001; Wed, 9 Mar 2022 10:49:36 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 42C848D0005; Wed, 9 Mar 2022 10:49:36 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0089.hostedemail.com [216.40.44.89]) by kanga.kvack.org (Postfix) with ESMTP id 3422E8D0001 for ; Wed, 9 Mar 2022 10:49:36 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id E7297181BCEFC for ; 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09 Mar 2022 07:49:16 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,167,1643702400"; d="scan'208";a="510524239" Received: from lkp-server02.sh.intel.com (HELO 89b41b6ae01c) ([10.239.97.151]) by orsmga002.jf.intel.com with ESMTP; 09 Mar 2022 07:49:14 -0800 Received: from kbuild by 89b41b6ae01c with local (Exim 4.92) (envelope-from ) id 1nRyYs-0003Tn-13; Wed, 09 Mar 2022 15:49:14 +0000 Date: Wed, 9 Mar 2022 23:48:35 +0800 From: kernel test robot To: Tom Zanussi Cc: kbuild-all@lists.01.org, Linux Memory Management List , "Steven Rostedt (Google)" Subject: [linux-next:master 4605/11713] kernel/trace/trace_events_synth.c:65:9: warning: 'strncpy' specified bound depends on the length of the source argument Message-ID: <202203092349.i2I1pdlw-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 16FFB180014 X-Stat-Signature: s7xcxh5dywx5k4yyzeupzmm44wromg8o X-Rspam-User: Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b=La7Sf3a8; dmarc=pass (policy=none) header.from=intel.com; spf=none (imf24.hostedemail.com: domain of lkp@intel.com has no SPF policy when checking 134.134.136.126) smtp.mailfrom=lkp@intel.com X-Rspamd-Server: rspam03 X-HE-Tag: 1646840974-676398 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: Hi Tom, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 4e7a74a6856f8613dab9794da4b5cfb8fd54fb8c commit: 27c888da9867725784bad3d6455d6e53b425fa2b [4605/11713] tracing: Remove size restriction on synthetic event cmd error logging config: powerpc64-buildonly-randconfig-r006-20220309 (https://download.01.org/0day-ci/archive/20220309/202203092349.i2I1pdlw-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=27c888da9867725784bad3d6455d6e53b425fa2b git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 27c888da9867725784bad3d6455d6e53b425fa2b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash kernel/trace/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): kernel/trace/trace_events_synth.c: In function 'last_cmd_set': >> kernel/trace/trace_events_synth.c:65:9: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-truncation] 65 | strncpy(last_cmd, str, strlen(str) + 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/trace/trace_events_synth.c:65:32: note: length computed here 65 | strncpy(last_cmd, str, strlen(str) + 1); | ^~~~~~~~~~~ vim +/strncpy +65 kernel/trace/trace_events_synth.c 54 55 static void last_cmd_set(const char *str) 56 { 57 if (!str) 58 return; 59 60 kfree(last_cmd); 61 last_cmd = kzalloc(strlen(str) + 1, GFP_KERNEL); 62 if (!last_cmd) 63 return; 64 > 65 strncpy(last_cmd, str, strlen(str) + 1); 66 } 67 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org