From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gnuweeb.org (Postfix) with ESMTPS id 1F12F7E3B2 for ; Thu, 21 Apr 2022 13:43:19 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=CEGtryy3; dkim-atps=neutral DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1650548599; x=1682084599; h=date:from:to:cc:subject:message-id:mime-version; bh=LqxG6CMNpCvDoph0giZ6h8fUSlEMss2zdZD880HZ9G0=; b=CEGtryy3f7nUyJhKfzssipavQXHrC7GeClZPK9TswF00YjAyx1YdZG2j nIeMM3oLYovflvO79+YdEkGwxFEiQV6Dg4H4TwiNy9P/wVRtA4onIpY/k KZ9cYjwj8DNEBVuDpZbTr0vtJVgkuDk88cEwsiIssB+nEmzC4xRNFr66D hlvRYgiWXJfbm3LL27HUg04Jj6z75Po9lmCKmXSPSJjSEE3TRfIaaIEKx i8t57RMNbPgo0MOrNlxDepkrfamAKSPOvKUKHdz+WX2RR1UHHssV+IuKy SfBEuhhskN89I5YgOI2rU31gsUtz9S20HMmFI747B+FUUi+htgMmpCj3Q w==; X-IronPort-AV: E=McAfee;i="6400,9594,10324"; a="246249433" X-IronPort-AV: E=Sophos;i="5.90,278,1643702400"; d="scan'208";a="246249433" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2022 06:43:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,278,1643702400"; d="scan'208";a="670748383" Received: from lkp-server01.sh.intel.com (HELO 3abc53900bec) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 21 Apr 2022 06:43:16 -0700 Received: from kbuild by 3abc53900bec with local (Exim 4.95) (envelope-from ) id 1nhX5X-0008RT-Ng; Thu, 21 Apr 2022 13:43:15 +0000 Date: Thu, 21 Apr 2022 21:43:14 +0800 From: kernel test robot To: Kees Cook Cc: kbuild-all@lists.01.org, GNU/Weeb Mailing List , linux-kernel@vger.kernel.org, Sasha Levin , Greg Kroah-Hartman Subject: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.4 1/5] include/linux/string.h:294:33: warning: '__builtin_strncpy' output truncated copying 8 bytes from a string of length 27 Message-ID: <202204212124.c4Cz1ERW-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline List-Id: tree: https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.4 head: e613962787e504da4b594e69c524e003c1267ebd commit: 71b7d7ee19a794811e8a70d7407d79197f5b930f [1/5] etherdevice: Adjust ether_addr* prototypes to silence -Wstringop-overead config: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20220421/202204212124.c4Cz1ERW-lkp@intel.com/config) compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 reproduce (this is a W=1 build): # https://github.com/ammarfaizi2/linux-block/commit/71b7d7ee19a794811e8a70d7407d79197f5b930f git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.4 git checkout 71b7d7ee19a794811e8a70d7407d79197f5b930f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/nvme/target/ 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/bitmap.h:9, from include/linux/cpumask.h:12, from arch/x86/include/asm/cpumask.h:5, from arch/x86/include/asm/msr.h:11, from arch/x86/include/asm/processor.h:21, from arch/x86/include/asm/cpufeature.h:5, from arch/x86/include/asm/thread_info.h:53, from include/linux/thread_info.h:39, from arch/x86/include/asm/preempt.h:7, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/mmzone.h:8, from include/linux/gfp.h:6, from include/linux/slab.h:15, from drivers/nvme/target/discovery.c:7: In function 'strncpy', inlined from 'nvmet_execute_identify_disc_ctrl' at drivers/nvme/target/discovery.c:243:2: >> include/linux/string.h:294:33: warning: '__builtin_strncpy' output truncated copying 8 bytes from a string of length 27 [-Wstringop-truncation] 294 | #define __underlying_strncpy __builtin_strncpy | ^ include/linux/string.h:304:16: note: in expansion of macro '__underlying_strncpy' 304 | return __underlying_strncpy(p, q, size); | ^~~~~~~~~~~~~~~~~~~~ vim +/__builtin_strncpy +294 include/linux/string.h b008ae4cc74d3a Daniel Axtens 2020-06-03 272 b008ae4cc74d3a Daniel Axtens 2020-06-03 273 #ifdef CONFIG_KASAN b008ae4cc74d3a Daniel Axtens 2020-06-03 274 extern void *__underlying_memchr(const void *p, int c, __kernel_size_t size) __RENAME(memchr); b008ae4cc74d3a Daniel Axtens 2020-06-03 275 extern int __underlying_memcmp(const void *p, const void *q, __kernel_size_t size) __RENAME(memcmp); b008ae4cc74d3a Daniel Axtens 2020-06-03 276 extern void *__underlying_memcpy(void *p, const void *q, __kernel_size_t size) __RENAME(memcpy); b008ae4cc74d3a Daniel Axtens 2020-06-03 277 extern void *__underlying_memmove(void *p, const void *q, __kernel_size_t size) __RENAME(memmove); b008ae4cc74d3a Daniel Axtens 2020-06-03 278 extern void *__underlying_memset(void *p, int c, __kernel_size_t size) __RENAME(memset); b008ae4cc74d3a Daniel Axtens 2020-06-03 279 extern char *__underlying_strcat(char *p, const char *q) __RENAME(strcat); b008ae4cc74d3a Daniel Axtens 2020-06-03 280 extern char *__underlying_strcpy(char *p, const char *q) __RENAME(strcpy); b008ae4cc74d3a Daniel Axtens 2020-06-03 281 extern __kernel_size_t __underlying_strlen(const char *p) __RENAME(strlen); b008ae4cc74d3a Daniel Axtens 2020-06-03 282 extern char *__underlying_strncat(char *p, const char *q, __kernel_size_t count) __RENAME(strncat); b008ae4cc74d3a Daniel Axtens 2020-06-03 283 extern char *__underlying_strncpy(char *p, const char *q, __kernel_size_t size) __RENAME(strncpy); b008ae4cc74d3a Daniel Axtens 2020-06-03 284 #else b008ae4cc74d3a Daniel Axtens 2020-06-03 285 #define __underlying_memchr __builtin_memchr b008ae4cc74d3a Daniel Axtens 2020-06-03 286 #define __underlying_memcmp __builtin_memcmp b008ae4cc74d3a Daniel Axtens 2020-06-03 287 #define __underlying_memcpy __builtin_memcpy b008ae4cc74d3a Daniel Axtens 2020-06-03 288 #define __underlying_memmove __builtin_memmove b008ae4cc74d3a Daniel Axtens 2020-06-03 289 #define __underlying_memset __builtin_memset b008ae4cc74d3a Daniel Axtens 2020-06-03 290 #define __underlying_strcat __builtin_strcat b008ae4cc74d3a Daniel Axtens 2020-06-03 291 #define __underlying_strcpy __builtin_strcpy b008ae4cc74d3a Daniel Axtens 2020-06-03 292 #define __underlying_strlen __builtin_strlen b008ae4cc74d3a Daniel Axtens 2020-06-03 293 #define __underlying_strncat __builtin_strncat b008ae4cc74d3a Daniel Axtens 2020-06-03 @294 #define __underlying_strncpy __builtin_strncpy b008ae4cc74d3a Daniel Axtens 2020-06-03 295 #endif b008ae4cc74d3a Daniel Axtens 2020-06-03 296 :::::: The code at line 294 was first introduced by commit :::::: b008ae4cc74d3ab43074099746f6c32d353e01aa string.h: fix incompatibility between FORTIFY_SOURCE and KASAN :::::: TO: Daniel Axtens :::::: CC: Greg Kroah-Hartman -- 0-DAY CI Kernel Test Service https://01.org/lkp