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 1EBC6C433EF for ; Fri, 28 Jan 2022 21:04:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351322AbiA1VEW (ORCPT ); Fri, 28 Jan 2022 16:04:22 -0500 Received: from mga09.intel.com ([134.134.136.24]:39330 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344421AbiA1VEG (ORCPT ); Fri, 28 Jan 2022 16:04:06 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1643403846; x=1674939846; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=rRQi5U4fNXjd7il7SklJ7fYxH9Jsm7zneoJJFyQiclk=; b=E7JtnfaPJN3dIl7ZnWGHHKLGz/ZokWP3w3O9pj5392Es6rMxe2xngtZJ YdDleVJW9F5Gqg3HFvq1tSjxsaN01lMlSVuqagns3sdLvP0xch/VuYEtw 1y4SybVcflw5Woh7k+qyxBNFN4R7FpwHLqKJwl6OovEInUkaS9ircgR9E p+oOToc6XsC4AewjnOMkHh3uq8my1yfqBVr7tn87XIc9PjXfEfJHwG2IW vF29wJRKu4gUr2o2jCq4c3425M3s6hHRjN7rINjGbkRDeZyVNA2NG6ICw XjjBK7mXfuwZyjcsFQdjfu0Z6cvZlTrHR1s4sue5IFYSABUuK2fgqqaTq A==; X-IronPort-AV: E=McAfee;i="6200,9189,10241"; a="246969200" X-IronPort-AV: E=Sophos;i="5.88,324,1635231600"; d="scan'208";a="246969200" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Jan 2022 13:04:05 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,324,1635231600"; d="scan'208";a="629247635" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 28 Jan 2022 13:04:02 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1nDYPZ-000OJP-OP; Fri, 28 Jan 2022 21:04:01 +0000 Date: Sat, 29 Jan 2022 05:03:21 +0800 From: kernel test robot To: cgel.zte@gmail.com, luciano.coelho@intel.com Cc: kbuild-all@lists.01.org, kvalo@kernel.org, davem@davemloft.net, kuba@kernel.org, trix@redhat.com, johannes.berg@intel.com, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Minghao Chi Subject: Re: [PATCH] dvm: use struct_size over open coded arithmetic Message-ID: <202201290256.JxMfdzDu-lkp@intel.com> References: <20220128080206.1211452-1-chi.minghao@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220128080206.1211452-1-chi.minghao@zte.com.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.17-rc1 next-20220128] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/cgel-zte-gmail-com/dvm-use-struct_size-over-open-coded-arithmetic/20220128-160349 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 23a46422c56144939c091c76cf389aa863ce9c18 config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20220129/202201290256.JxMfdzDu-lkp@intel.com/config) compiler: arm-linux-gnueabi-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://github.com/0day-ci/linux/commit/6ce283968f032a338616dbe570097f1639a66b75 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review cgel-zte-gmail-com/dvm-use-struct_size-over-open-coded-arithmetic/20220128-160349 git checkout 6ce283968f032a338616dbe570097f1639a66b75 # 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=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from include/linux/mm.h:30, from arch/arm/include/asm/cacheflush.h:10, from include/linux/cacheflush.h:5, from include/linux/highmem.h:8, from include/linux/bvec.h:10, from include/linux/skbuff.h:17, from include/linux/if_ether.h:19, from include/linux/etherdevice.h:20, from drivers/net/wireless/intel/iwlwifi/dvm/rx.c:12: drivers/net/wireless/intel/iwlwifi/dvm/rx.c: In function 'iwlagn_rx_noa_notification': >> include/linux/overflow.h:194:32: error: invalid type argument of '->' (have 'struct iwl_wipan_noa_data') 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~ drivers/net/wireless/intel/iwlwifi/dvm/rx.c:918:36: note: in expansion of macro 'struct_size' 918 | new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC); | ^~~~~~~~~~~ In file included from include/linux/container_of.h:5, from include/linux/kernel.h:21, from include/linux/skbuff.h:13, from include/linux/if_ether.h:19, from include/linux/etherdevice.h:20, from drivers/net/wireless/intel/iwlwifi/dvm/rx.c:12: include/linux/overflow.h:194:63: error: invalid type argument of '->' (have 'struct iwl_wipan_noa_data') 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~ include/linux/build_bug.h:16:62: note: in definition of macro 'BUILD_BUG_ON_ZERO' 16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) | ^ include/linux/compiler.h:258:51: note: in expansion of macro '__same_type' 258 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) | ^~~~~~~~~~~ include/linux/overflow.h:194:44: note: in expansion of macro '__must_be_array' 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~~~~~~~~~~~~~~ drivers/net/wireless/intel/iwlwifi/dvm/rx.c:918:36: note: in expansion of macro 'struct_size' 918 | new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC); | ^~~~~~~~~~~ include/linux/overflow.h:194:63: error: invalid type argument of '->' (have 'struct iwl_wipan_noa_data') 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~ include/linux/build_bug.h:16:62: note: in definition of macro 'BUILD_BUG_ON_ZERO' 16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) | ^ include/linux/compiler.h:258:51: note: in expansion of macro '__same_type' 258 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) | ^~~~~~~~~~~ include/linux/overflow.h:194:44: note: in expansion of macro '__must_be_array' 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~~~~~~~~~~~~~~ drivers/net/wireless/intel/iwlwifi/dvm/rx.c:918:36: note: in expansion of macro 'struct_size' 918 | new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC); | ^~~~~~~~~~~ include/linux/build_bug.h:16:51: error: bit-field '' width not an integer constant 16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) | ^ include/linux/compiler.h:258:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO' 258 | #define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0])) | ^~~~~~~~~~~~~~~~~ include/linux/overflow.h:194:44: note: in expansion of macro '__must_be_array' 194 | sizeof(*(p)->member) + __must_be_array((p)->member),\ | ^~~~~~~~~~~~~~~ drivers/net/wireless/intel/iwlwifi/dvm/rx.c:918:36: note: in expansion of macro 'struct_size' 918 | new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC); | ^~~~~~~~~~~ In file included from include/linux/mm.h:30, from arch/arm/include/asm/cacheflush.h:10, from include/linux/cacheflush.h:5, from include/linux/highmem.h:8, from include/linux/bvec.h:10, from include/linux/skbuff.h:17, from include/linux/if_ether.h:19, from include/linux/etherdevice.h:20, from drivers/net/wireless/intel/iwlwifi/dvm/rx.c:12: >> include/linux/overflow.h:195:28: error: invalid type argument of unary '*' (have 'struct iwl_wipan_noa_data') 195 | sizeof(*(p))) | ^~~~ drivers/net/wireless/intel/iwlwifi/dvm/rx.c:918:36: note: in expansion of macro 'struct_size' 918 | new_data = kmalloc(struct_size(*new_data, data, len), GFP_ATOMIC); | ^~~~~~~~~~~ vim +194 include/linux/overflow.h 610b15c50e86eb Kees Cook 2018-05-07 180 610b15c50e86eb Kees Cook 2018-05-07 181 /** 610b15c50e86eb Kees Cook 2018-05-07 182 * struct_size() - Calculate size of structure with trailing array. 610b15c50e86eb Kees Cook 2018-05-07 183 * @p: Pointer to the structure. 610b15c50e86eb Kees Cook 2018-05-07 184 * @member: Name of the array member. b19d57d0f3cc6f Gustavo A. R. Silva 2020-06-08 185 * @count: Number of elements in the array. 610b15c50e86eb Kees Cook 2018-05-07 186 * 610b15c50e86eb Kees Cook 2018-05-07 187 * Calculates size of memory needed for structure @p followed by an b19d57d0f3cc6f Gustavo A. R. Silva 2020-06-08 188 * array of @count number of @member elements. 610b15c50e86eb Kees Cook 2018-05-07 189 * 610b15c50e86eb Kees Cook 2018-05-07 190 * Return: number of bytes needed or SIZE_MAX on overflow. 610b15c50e86eb Kees Cook 2018-05-07 191 */ b19d57d0f3cc6f Gustavo A. R. Silva 2020-06-08 192 #define struct_size(p, member, count) \ b19d57d0f3cc6f Gustavo A. R. Silva 2020-06-08 193 __ab_c_size(count, \ 610b15c50e86eb Kees Cook 2018-05-07 @194 sizeof(*(p)->member) + __must_be_array((p)->member),\ 610b15c50e86eb Kees Cook 2018-05-07 @195 sizeof(*(p))) 610b15c50e86eb Kees Cook 2018-05-07 196 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org