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X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="407199927" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="407199927" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2023 02:59:13 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="750861005" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="750861005" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by fmsmga008.fm.intel.com with ESMTP; 04 Apr 2023 02:59:11 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pjdRX-000PW8-0U; Tue, 04 Apr 2023 09:59:11 +0000 Date: Tue, 4 Apr 2023 17:58:51 +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: <202304041715.c3b7aJd4-lkp@intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 5E84B12000F X-Stat-Signature: 5rn3c1ub9uwa3y8hipepmrweske1afsk X-Rspam-User: X-HE-Tag: 1680602355-883328 X-HE-Meta: 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 yzwjMEC4 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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: i386-randconfig-a001-20230403 (https://download.01.org/0day-ci/archive/20230404/202304041715.c3b7aJd4-lkp@intel.com/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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/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=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 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/202304041715.c3b7aJd4-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