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a="1605108" X-IronPort-AV: E=Sophos;i="6.27,177,1787036400"; d="scan'208";a="1605108" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Oct 2026 05:38:08 -0700 X-CSE-ConnectionGUID: k+gHluimRfeABcsMa3XqGQ== X-CSE-MsgGUID: /PczsrsqTh+AxzZoqgctsw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,177,1787036400"; d="scan'208";a="3981230" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by orviesa003.jf.intel.com with ESMTP; 25 Oct 2026 05:38:02 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xKxU6-00000000UmU-1LTn; Sun, 25 Oct 2026 12:37:58 +0000 Date: Sun, 25 Oct 2026 20:37:36 +0800 From: kernel test robot To: Nhat Pham , akpm@linux-foundation.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, chrisl@kernel.org, kasong@tencent.com, hannes@cmpxchg.org, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, yosry@kernel.org, david@kernel.org, muchun.song@linux.dev, shikemeng@huaweicloud.com, baoquan.he@linux.dev, baohua@kernel.org, youngjun.park@lge.com, chengming.zhou@linux.dev, ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, qi.zheng@linux.dev, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, riel@surriel.com, gourry@gourry.net, haowenchao22@gmail.com, corbet@lwn.net, hughd@google.com, baolin.wang@linux.alibaba.com Subject: Re: [PATCH v6 04/12] mm, swap: support physical swap as a vswap backend Message-ID: <202610252016.SuCWXL35-lkp@intel.com> References: <20261021060323.553433-5-nphamcs@gmail.com> X-Mailing-List: llvm@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261021060323.553433-5-nphamcs@gmail.com> Hi Nhat, kernel test robot noticed the following build errors: [auto build test ERROR on 4dbe24720eb3811563cd56b35d87ddf3f9beed2a] url: https://github.com/intel-lab-lkp/linux/commits/Nhat-Pham/mm-swap-add-virtual-swap-device-infrastructure/20261020-230312 base: 4dbe24720eb3811563cd56b35d87ddf3f9beed2a patch link: https://lore.kernel.org/r/20261021060323.553433-5-nphamcs%40gmail.com patch subject: [PATCH v6 04/12] mm, swap: support physical swap as a vswap backend config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20261025/202610252016.SuCWXL35-lkp@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261025/202610252016.SuCWXL35-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/202610252016.SuCWXL35-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from mm/workingset.c:19: >> mm/swap_table.h:418:10: error: call to undeclared function 'swp_offset'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 418 | return (swp_offset(entry) << SWP_TB_VSWAP_MARK_BITS) | SWP_TB_VSWAP_MARK; | ^ >> mm/swap_table.h:427:9: error: call to undeclared function 'swp_entry'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 427 | return swp_entry(vswap_si->type, offset); | ^ >> mm/swap_table.h:427:9: error: returning 'int' from a function with incompatible result type 'swp_entry_t' 427 | return swp_entry(vswap_si->type, offset); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 3 errors generated. vim +/swp_offset +418 mm/swap_table.h 415 416 static inline unsigned long swp_entry_to_swp_tb_vswap(swp_entry_t entry) 417 { > 418 return (swp_offset(entry) << SWP_TB_VSWAP_MARK_BITS) | SWP_TB_VSWAP_MARK; 419 } 420 421 static inline swp_entry_t swp_tb_vswap_to_swp_entry(unsigned long swp_tb) 422 { 423 unsigned long offset; 424 425 VM_WARN_ON(!swp_tb_is_vswap(swp_tb)); 426 offset = (swp_tb & SWP_RMAP_ENTRY_MASK) >> SWP_TB_VSWAP_MARK_BITS; > 427 return swp_entry(vswap_si->type, offset); 428 } 429 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki