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X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="321798532" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="321798532" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2023 03:10:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="688839750" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="688839750" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by fmsmga007.fm.intel.com with ESMTP; 04 Apr 2023 03:10:12 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pjdcB-000PWw-2B; Tue, 04 Apr 2023 10:10:11 +0000 Date: Tue, 4 Apr 2023 18:09:16 +0800 From: kernel test robot To: Josh Triplett , Andrew Morton , linux-kernel@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Linux Memory Management List Subject: Re: [PATCH] prctl: Add PR_GET_AUXV to copy auxv to userspace Message-ID: <202304041710.JYcSAmPL-lkp@intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Queue-Id: 03CCA14001B X-Rspamd-Server: rspam01 X-Stat-Signature: 85jwqqoycfoubydcy5yn7p5gw9rjjehe X-HE-Tag: 1680603015-722276 X-HE-Meta: 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 0LD04Xvl 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 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 Josh, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.3-rc5] [cannot apply to akpm-mm/mm-everything next-20230404] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Josh-Triplett/prctl-Add-PR_GET_AUXV-to-copy-auxv-to-userspace/20230404-140043 patch link: https://lore.kernel.org/r/b11a591e085f1cd06adb454b1f7cde676d317318.1680585798.git.josh%40joshtriplett.org patch subject: [PATCH] prctl: Add PR_GET_AUXV to copy auxv to userspace config: arm-randconfig-r025-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041710.JYcSAmPL-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/intel-lab-lkp/linux/commit/4323f9bd6c2ecbfd6be4f8a3830ea47a89558314 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Josh-Triplett/prctl-Add-PR_GET_AUXV-to-copy-auxv-to-userspace/20230404-140043 git checkout 4323f9bd6c2ecbfd6be4f8a3830ea47a89558314 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304041710.JYcSAmPL-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/sys.c:2383:23: warning: comparison of distinct pointer types ('typeof (sizeof (mm->saved_auxv)) *' (aka 'unsigned int *') and 'typeof (len) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types] unsigned long size = min(sizeof(mm->saved_auxv), len); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:67:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp' __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~~~~~~~ include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp' (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~~~~~~~ include/linux/minmax.h:20:28: note: expanded from macro '__typecheck' (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ 1 warning generated. vim +2383 kernel/sys.c 2379 2380 static int prctl_get_auxv(void __user *addr, unsigned long len) 2381 { 2382 struct mm_struct *mm = current->mm; > 2383 unsigned long size = min(sizeof(mm->saved_auxv), len); 2384 2385 if (size && copy_to_user(addr, mm->saved_auxv, size)) 2386 return -EFAULT; 2387 return sizeof(mm->saved_auxv); 2388 } 2389 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests