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X-IronPort-AV: E=McAfee;i="6600,9927,11019"; a="17077958" X-IronPort-AV: E=Sophos;i="6.07,141,1708416000"; d="scan'208";a="17077958" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Mar 2024 16:37:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,141,1708416000"; d="scan'208";a="45297264" Received: from lkp-server01.sh.intel.com (HELO b21307750695) ([10.239.97.150]) by orviesa002.jf.intel.com with ESMTP; 20 Mar 2024 16:37:27 -0700 Received: from kbuild by b21307750695 with local (Exim 4.96) (envelope-from ) id 1rn5Uq-000J0R-39; Wed, 20 Mar 2024 23:37:24 +0000 Date: Thu, 21 Mar 2024 07:37:12 +0800 From: kernel test robot To: Oscar Salvador , Andrew Morton Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , linux-kernel@vger.kernel.org, Michal Hocko , Vlastimil Babka , Marco Elver , Andrey Konovalov , Alexander Potapenko , Tetsuo Handa , Oscar Salvador , syzbot+41bbfdb8d41003d12c0f@syzkaller.appspotmail.com Subject: Re: [PATCH v2 1/2] mm,page_owner: Fix refcount imbalance Message-ID: <202403210718.9IiE8NIU-lkp@intel.com> References: <20240319183212.17156-2-osalvador@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240319183212.17156-2-osalvador@suse.de> X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 54A72160014 X-Stat-Signature: 1hai6ddfbyhgpep83ium69ry9wr4sfac X-HE-Tag: 1710977852-90620 X-HE-Meta: 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 KyN8cJ2X 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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: List-Subscribe: List-Unsubscribe: Hi Oscar, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master next-20240320] [cannot apply to v6.8] [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/Oscar-Salvador/mm-page_owner-Fix-refcount-imbalance/20240320-023302 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240319183212.17156-2-osalvador%40suse.de patch subject: [PATCH v2 1/2] mm,page_owner: Fix refcount imbalance config: x86_64-randconfig-r081-20240320 (https://download.01.org/0day-ci/archive/20240321/202403210718.9IiE8NIU-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240321/202403210718.9IiE8NIU-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202403210718.9IiE8NIU-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/page_owner.c: In function 'dec_stack_record_count': >> mm/page_owner.c:213:3: warning: ignoring return value of 'refcount_sub_and_test', declared with attribute warn_unused_result [-Wunused-result] 213 | refcount_sub_and_test(nr_base_pages, &stack_record->count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/refcount_sub_and_test +213 mm/page_owner.c 206 207 static void dec_stack_record_count(depot_stack_handle_t handle, 208 int nr_base_pages) 209 { 210 struct stack_record *stack_record = __stack_depot_get_stack_record(handle); 211 212 if (stack_record) > 213 refcount_sub_and_test(nr_base_pages, &stack_record->count); 214 } 215 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki