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 2AA89C04A68 for ; Sat, 30 Jul 2022 09:37:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234433AbiG3JhG (ORCPT ); Sat, 30 Jul 2022 05:37:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231717AbiG3JhC (ORCPT ); Sat, 30 Jul 2022 05:37:02 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F3A9815FDA for ; Sat, 30 Jul 2022 02:37:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659173821; x=1690709821; h=date:from:to:cc:subject:message-id:mime-version; bh=nnO2LEN/TsivdC6GGv8T0MR4Hvri7DBHRSIWe0glSTQ=; b=M1T0VBlWIL5iQgH+VCsBiS90RzM8ST9pyv0/pAqXwgAXyCVnAa1fX5cI hrMOnWmEIFQxUfUX9FUZyzfH1mGV1EEneEQ2lNoLMhrdqEL8zxSvwlAnz ltuivEtw8GB9xeHmPaaKO8LBkxH/kK1x7Hpf3X01XkIhlwk5dWbYQNQ+n PBPlmT6lwT67HE+VAshPVr3AAatZIsUK9xyxIJmrthsdDNgauQzwYNytK Kwie9dCJ2ef2KYvTcOqRQfYta+VZTor4r3921ucKxtPdSqRj3zQXDlu52 HuvRy4iT0NMSJrZjhC9/8Rp+m2uG5D4/GoDtoviwsjXY6NU1wwKu8ttQL g==; X-IronPort-AV: E=McAfee;i="6400,9594,10423"; a="352908989" X-IronPort-AV: E=Sophos;i="5.93,203,1654585200"; d="scan'208";a="352908989" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jul 2022 02:37:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,203,1654585200"; d="scan'208";a="551990976" Received: from lkp-server01.sh.intel.com (HELO e0eace57cfef) ([10.239.97.150]) by orsmga003.jf.intel.com with ESMTP; 30 Jul 2022 02:37:00 -0700 Received: from kbuild by e0eace57cfef with local (Exim 4.96) (envelope-from ) id 1oHiu3-000Cgu-13; Sat, 30 Jul 2022 09:36:59 +0000 Date: Sat, 30 Jul 2022 17:36:35 +0800 From: kernel test robot To: Dan Carpenter Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Chuck Lever Subject: [stable:linux-4.19.y 2019/3409] include/linux/sunrpc/xdr.h:512:17: error: comparison is always false due to limited range of data type Message-ID: <202207301724.i0Djw2HL-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Dan, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.19.y head: b275bfc9c2d385c7f7a66f9dcd0364e71cd8b864 commit: 3a2789e8ccb4a3e2a631f6817a2d3bb98b8c4fd8 [2019/3409] NFSD: prevent integer overflow on 32 bit systems config: sparc64-randconfig-r015-20220729 (https://download.01.org/0day-ci/archive/20220730/202207301724.i0Djw2HL-lkp@intel.com/config) compiler: sparc64-linux-gcc (GCC) 12.1.0 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/stable/linux-stable.git/commit/?id=3a2789e8ccb4a3e2a631f6817a2d3bb98b8c4fd8 git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git git fetch --no-tags stable linux-4.19.y git checkout 3a2789e8ccb4a3e2a631f6817a2d3bb98b8c4fd8 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sparc64 SHELL=/bin/bash arch/sparc/kernel/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from include/linux/sunrpc/sched.h:19, from include/linux/sunrpc/auth.h:15, from include/linux/nfs_fs.h:31, from arch/sparc/kernel/sys_sparc32.c:25: include/linux/sunrpc/xdr.h: In function 'xdr_stream_decode_uint32_array': >> include/linux/sunrpc/xdr.h:512:17: error: comparison is always false due to limited range of data type [-Werror=type-limits] 512 | if (len > SIZE_MAX / sizeof(*p)) | ^ In file included from include/linux/ethtool.h:17, from include/linux/netdevice.h:41, from include/net/sock.h:51, from include/linux/tcp.h:23, from include/linux/ipv6.h:87, from include/net/ipv6.h:16, from include/linux/sunrpc/clnt.h:28, from include/linux/nfs_fs.h:32: include/linux/compat.h: In function 'put_compat_sigset': include/linux/compat.h:495:58: error: this statement may fall through [-Werror=implicit-fallthrough=] 495 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; | ~~~~~~~~~^~~~~~~~~~~~~ include/linux/compat.h:496:9: note: here 496 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; | ^~~~ include/linux/compat.h:496:58: error: this statement may fall through [-Werror=implicit-fallthrough=] 496 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; | ~~~~~~~~~^~~~~~~~~~~~~ include/linux/compat.h:497:9: note: here 497 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; | ^~~~ include/linux/compat.h:497:58: error: this statement may fall through [-Werror=implicit-fallthrough=] 497 | case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; | ~~~~~~~~~^~~~~~~~~~~~~ include/linux/compat.h:498:9: note: here 498 | case 1: v.sig[1] = (set->sig[0] >> 32); v.sig[0] = set->sig[0]; | ^~~~ cc1: all warnings being treated as errors Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FRAME_POINTER Depends on [n]: DEBUG_KERNEL [=y] && (M68K || UML || SUPERH) || ARCH_WANT_FRAME_POINTERS [=n] || MCOUNT [=n] Selected by [y]: - LOCKDEP [=y] && DEBUG_KERNEL [=y] && LOCK_DEBUGGING_SUPPORT [=y] && !MIPS && !PPC && !ARM && !S390 && !MICROBLAZE && !ARC && !X86 vim +512 include/linux/sunrpc/xdr.h 490 491 /** 492 * xdr_stream_decode_uint32_array - Decode variable length array of integers 493 * @xdr: pointer to xdr_stream 494 * @array: location to store the integer array or NULL 495 * @array_size: number of elements to store 496 * 497 * Return values: 498 * On success, returns number of elements stored in @array 499 * %-EBADMSG on XDR buffer overflow 500 * %-EMSGSIZE if the size of the array exceeds @array_size 501 */ 502 static inline ssize_t 503 xdr_stream_decode_uint32_array(struct xdr_stream *xdr, 504 __u32 *array, size_t array_size) 505 { 506 __be32 *p; 507 __u32 len; 508 ssize_t retval; 509 510 if (unlikely(xdr_stream_decode_u32(xdr, &len) < 0)) 511 return -EBADMSG; > 512 if (len > SIZE_MAX / sizeof(*p)) 513 return -EBADMSG; 514 p = xdr_inline_decode(xdr, len * sizeof(*p)); 515 if (unlikely(!p)) 516 return -EBADMSG; 517 if (array == NULL) 518 return len; 519 if (len <= array_size) { 520 if (len < array_size) 521 memset(array+len, 0, (array_size-len)*sizeof(*array)); 522 array_size = len; 523 retval = len; 524 } else 525 retval = -EMSGSIZE; 526 for (; array_size > 0; p++, array++, array_size--) 527 *array = be32_to_cpup(p); 528 return retval; 529 } 530 #endif /* __KERNEL__ */ 531 -- 0-DAY CI Kernel Test Service https://01.org/lkp