From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============0896043702471770477==" MIME-Version: 1.0 From: kernel test robot To: kbuild-all@lists.01.org Subject: [zanussi-trace:ftrace/misc-bugfixes-v1 6/7] include/linux/fortify-string.h:47:30: warning: '__builtin_strncat' output truncated before terminating nul copying as many bytes from a string as its length Date: Fri, 28 Jan 2022 10:16:06 +0800 Message-ID: <202201281016.u1LRBCEw-lkp@intel.com> List-Id: --===============0896043702471770477== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable tree: https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace= .git ftrace/misc-bugfixes-v1 head: a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd commit: b519e15e681319e99055a92c8d090072ebb2b179 [6/7] tracing: Remove size= restriction on hist trigger cmd error logging config: i386-randconfig-a002-20220124 (https://download.01.org/0day-ci/arch= ive/20220128/202201281016.u1LRBCEw-lkp(a)intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=3D1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-tra= ce.git/commit/?id=3Db519e15e681319e99055a92c8d090072ebb2b179 git remote add zanussi-trace https://git.kernel.org/pub/scm/linux/k= ernel/git/zanussi/linux-trace.git git fetch --no-tags zanussi-trace ftrace/misc-bugfixes-v1 git checkout b519e15e681319e99055a92c8d090072ebb2b179 # save the config file to linux build tree mkdir build_dir make W=3D1 O=3Dbuild_dir ARCH=3Di386 SHELL=3D/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 >>): In file included from include/linux/string.h:253, from arch/x86/include/asm/page_32.h:35, from arch/x86/include/asm/page.h:14, from arch/x86/include/asm/processor.h:19, from arch/x86/include/asm/timex.h:5, from include/linux/timex.h:65, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/stat.h:19, from include/linux/module.h:13, from kernel/trace/trace_events_hist.c:8: In function 'strncat', inlined from 'last_cmd_set' at kernel/trace/trace_events_hist.c:759:= 2, inlined from 'event_hist_trigger_parse' at kernel/trace/trace_events= _hist.c:6190:3: >> include/linux/fortify-string.h:47:30: warning: '__builtin_strncat' outpu= t truncated before terminating nul copying as many bytes from a string as i= ts length [-Wstringop-truncation] 47 | #define __underlying_strncat __builtin_strncat | ^ include/linux/fortify-string.h:191:10: note: in expansion of macro '__un= derlying_strncat' 191 | return __underlying_strncat(p, q, count); | ^~~~~~~~~~~~~~~~~~~~ kernel/trace/trace_events_hist.c: In function 'event_hist_trigger_parse': include/linux/fortify-string.h:46:29: note: length computed here 46 | #define __underlying_strlen __builtin_strlen | ^ include/linux/fortify-string.h:102:10: note: in expansion of macro '__un= derlying_strlen' 102 | return __underlying_strlen(p); | ^~~~~~~~~~~~~~~~~~~ vim +/__builtin_strncat +47 include/linux/fortify-string.h 3009f891bb9f328 Kees Cook 2021-08-02 26 = a28a6e860c6cf23 Francis Laniel 2021-02-25 27 #if defined(CONFIG_KASAN_GEN= ERIC) || defined(CONFIG_KASAN_SW_TAGS) a28a6e860c6cf23 Francis Laniel 2021-02-25 28 extern void *__underlying_me= mchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr); a28a6e860c6cf23 Francis Laniel 2021-02-25 29 extern int __underlying_memc= mp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp); a28a6e860c6cf23 Francis Laniel 2021-02-25 30 extern void *__underlying_me= mcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 31 extern void *__underlying_me= mmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove); a28a6e860c6cf23 Francis Laniel 2021-02-25 32 extern void *__underlying_me= mset(void *p, int c, __kernel_size_t size) __RENAME(memset); a28a6e860c6cf23 Francis Laniel 2021-02-25 33 extern char *__underlying_st= rcat(char *p, const char *q) __RENAME(strcat); a28a6e860c6cf23 Francis Laniel 2021-02-25 34 extern char *__underlying_st= rcpy(char *p, const char *q) __RENAME(strcpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 35 extern __kernel_size_t __und= erlying_strlen(const char *p) __RENAME(strlen); a28a6e860c6cf23 Francis Laniel 2021-02-25 36 extern char *__underlying_st= rncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat); a28a6e860c6cf23 Francis Laniel 2021-02-25 37 extern char *__underlying_st= rncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 38 #else a28a6e860c6cf23 Francis Laniel 2021-02-25 39 #define __underlying_memchr = __builtin_memchr a28a6e860c6cf23 Francis Laniel 2021-02-25 40 #define __underlying_memcmp = __builtin_memcmp a28a6e860c6cf23 Francis Laniel 2021-02-25 41 #define __underlying_memcpy = __builtin_memcpy a28a6e860c6cf23 Francis Laniel 2021-02-25 42 #define __underlying_memmove= __builtin_memmove a28a6e860c6cf23 Francis Laniel 2021-02-25 43 #define __underlying_memset = __builtin_memset a28a6e860c6cf23 Francis Laniel 2021-02-25 44 #define __underlying_strcat = __builtin_strcat a28a6e860c6cf23 Francis Laniel 2021-02-25 45 #define __underlying_strcpy = __builtin_strcpy a28a6e860c6cf23 Francis Laniel 2021-02-25 46 #define __underlying_strlen = __builtin_strlen a28a6e860c6cf23 Francis Laniel 2021-02-25 @47 #define __underlying_strncat= __builtin_strncat a28a6e860c6cf23 Francis Laniel 2021-02-25 48 #define __underlying_strncpy= __builtin_strncpy a28a6e860c6cf23 Francis Laniel 2021-02-25 49 #endif a28a6e860c6cf23 Francis Laniel 2021-02-25 50 = :::::: The code at line 47 was first introduced by commit :::::: a28a6e860c6cf231cf3c5171c75c342adcd00406 string.h: move fortified fu= nctions definitions in a dedicated header. :::::: TO: Francis Laniel :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============0896043702471770477==-- 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0778C433F5 for ; Fri, 28 Jan 2022 02:18:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345257AbiA1CQu (ORCPT ); Thu, 27 Jan 2022 21:16:50 -0500 Received: from mga02.intel.com ([134.134.136.20]:59247 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345221AbiA1CQt (ORCPT ); Thu, 27 Jan 2022 21:16:49 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643336209; x=1674872209; h=date:from:to:cc:subject:message-id:mime-version; bh=8JxPEhFMsspR4OIfOK+OrFTfWgdbsDxM05ouNkLUsAw=; b=X/IRrByleE1HKA6Tuz3NNLEleKydvpyZGuT6mK03sHrO0rd+MQ1KDdpe Vvq85gGFYdFE2JcAFTv2JwmHF8FfMjvG/Jvr/gBlUqfxOYsU889zehH4N xcWk7qmgOw5Kb90uhk6mMdSfj8uEkyGlbM0YzKz61M0G22lpqO0qOgO3R DO1j4I4uck/KVsNz2NXYVRX1FUv6DlWZIRxbFN6ZJjY3ylNGGmXsY3fwi oyuEuL8C2wTewBe8iTwnm61bSOAfg82vn8xtN0JJMCM67m+QwHHNFmpBh IfLM9usv8GStSaRo/VnV1hH1Xg02roPPwP6ciatB6nzTyZJUXqe/w9KBV A==; X-IronPort-AV: E=McAfee;i="6200,9189,10240"; a="234398335" X-IronPort-AV: E=Sophos;i="5.88,322,1635231600"; d="scan'208";a="234398335" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jan 2022 18:16:48 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,322,1635231600"; d="scan'208";a="495961848" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 27 Jan 2022 18:16:47 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1nDGog-000NIJ-LY; Fri, 28 Jan 2022 02:16:46 +0000 Date: Fri, 28 Jan 2022 10:16:06 +0800 From: kernel test robot To: Tom Zanussi Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [zanussi-trace:ftrace/misc-bugfixes-v1 6/7] include/linux/fortify-string.h:47:30: warning: '__builtin_strncat' output truncated before terminating nul copying as many bytes from a string as its length Message-ID: <202201281016.u1LRBCEw-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) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git ftrace/misc-bugfixes-v1 head: a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd commit: b519e15e681319e99055a92c8d090072ebb2b179 [6/7] tracing: Remove size restriction on hist trigger cmd error logging config: i386-randconfig-a002-20220124 (https://download.01.org/0day-ci/archive/20220128/202201281016.u1LRBCEw-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git/commit/?id=b519e15e681319e99055a92c8d090072ebb2b179 git remote add zanussi-trace https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git git fetch --no-tags zanussi-trace ftrace/misc-bugfixes-v1 git checkout b519e15e681319e99055a92c8d090072ebb2b179 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 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 >>): In file included from include/linux/string.h:253, from arch/x86/include/asm/page_32.h:35, from arch/x86/include/asm/page.h:14, from arch/x86/include/asm/processor.h:19, from arch/x86/include/asm/timex.h:5, from include/linux/timex.h:65, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/stat.h:19, from include/linux/module.h:13, from kernel/trace/trace_events_hist.c:8: In function 'strncat', inlined from 'last_cmd_set' at kernel/trace/trace_events_hist.c:759:2, inlined from 'event_hist_trigger_parse' at kernel/trace/trace_events_hist.c:6190:3: >> include/linux/fortify-string.h:47:30: warning: '__builtin_strncat' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation] 47 | #define __underlying_strncat __builtin_strncat | ^ include/linux/fortify-string.h:191:10: note: in expansion of macro '__underlying_strncat' 191 | return __underlying_strncat(p, q, count); | ^~~~~~~~~~~~~~~~~~~~ kernel/trace/trace_events_hist.c: In function 'event_hist_trigger_parse': include/linux/fortify-string.h:46:29: note: length computed here 46 | #define __underlying_strlen __builtin_strlen | ^ include/linux/fortify-string.h:102:10: note: in expansion of macro '__underlying_strlen' 102 | return __underlying_strlen(p); | ^~~~~~~~~~~~~~~~~~~ vim +/__builtin_strncat +47 include/linux/fortify-string.h 3009f891bb9f328 Kees Cook 2021-08-02 26 a28a6e860c6cf23 Francis Laniel 2021-02-25 27 #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) a28a6e860c6cf23 Francis Laniel 2021-02-25 28 extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr); a28a6e860c6cf23 Francis Laniel 2021-02-25 29 extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp); a28a6e860c6cf23 Francis Laniel 2021-02-25 30 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 31 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove); a28a6e860c6cf23 Francis Laniel 2021-02-25 32 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(memset); a28a6e860c6cf23 Francis Laniel 2021-02-25 33 extern char *__underlying_strcat(char *p, const char *q) __RENAME(strcat); a28a6e860c6cf23 Francis Laniel 2021-02-25 34 extern char *__underlying_strcpy(char *p, const char *q) __RENAME(strcpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 35 extern __kernel_size_t __underlying_strlen(const char *p) __RENAME(strlen); a28a6e860c6cf23 Francis Laniel 2021-02-25 36 extern char *__underlying_strncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat); a28a6e860c6cf23 Francis Laniel 2021-02-25 37 extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy); a28a6e860c6cf23 Francis Laniel 2021-02-25 38 #else a28a6e860c6cf23 Francis Laniel 2021-02-25 39 #define __underlying_memchr __builtin_memchr a28a6e860c6cf23 Francis Laniel 2021-02-25 40 #define __underlying_memcmp __builtin_memcmp a28a6e860c6cf23 Francis Laniel 2021-02-25 41 #define __underlying_memcpy __builtin_memcpy a28a6e860c6cf23 Francis Laniel 2021-02-25 42 #define __underlying_memmove __builtin_memmove a28a6e860c6cf23 Francis Laniel 2021-02-25 43 #define __underlying_memset __builtin_memset a28a6e860c6cf23 Francis Laniel 2021-02-25 44 #define __underlying_strcat __builtin_strcat a28a6e860c6cf23 Francis Laniel 2021-02-25 45 #define __underlying_strcpy __builtin_strcpy a28a6e860c6cf23 Francis Laniel 2021-02-25 46 #define __underlying_strlen __builtin_strlen a28a6e860c6cf23 Francis Laniel 2021-02-25 @47 #define __underlying_strncat __builtin_strncat a28a6e860c6cf23 Francis Laniel 2021-02-25 48 #define __underlying_strncpy __builtin_strncpy a28a6e860c6cf23 Francis Laniel 2021-02-25 49 #endif a28a6e860c6cf23 Francis Laniel 2021-02-25 50 :::::: The code at line 47 was first introduced by commit :::::: a28a6e860c6cf231cf3c5171c75c342adcd00406 string.h: move fortified functions definitions in a dedicated header. :::::: TO: Francis Laniel :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org