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X-CSE-ConnectionGUID: VDJOhV59Tv6QRv1AlVtyyQ== X-CSE-MsgGUID: X7OH/FrLTFC4HY33ipPGxw== X-IronPort-AV: E=McAfee;i="6800,10657,11676"; a="95539202" X-IronPort-AV: E=Sophos;i="6.21,238,1763452800"; d="scan'208";a="95539202" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Jan 2026 12:32:18 -0800 X-CSE-ConnectionGUID: svZBSJU6RoOD5C+BtsURAg== X-CSE-MsgGUID: K8kb2n/uQyWqWjoRgkzGvg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,238,1763452800"; d="scan'208";a="228877536" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by fmviesa002.fm.intel.com with ESMTP; 19 Jan 2026 12:32:15 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vhvv3-00000000OHf-07LS; Mon, 19 Jan 2026 20:32:13 +0000 Date: Tue, 20 Jan 2026 04:31:26 +0800 From: kernel test robot To: mpenttil@redhat.com, linux-mm@kvack.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Mika =?iso-8859-1?Q?Penttil=E4?= , David Hildenbrand , Jason Gunthorpe , Leon Romanovsky , Alistair Popple , Balbir Singh , Zi Yan , Matthew Brost Subject: Re: [PATCH v2 1/3] mm: unified hmm fault and migrate device pagewalk paths Message-ID: <202601200418.y3IajnfX-lkp@intel.com> References: <20260119112502.645059-2-mpenttil@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260119112502.645059-2-mpenttil@redhat.com> Hi, kernel test robot noticed the following build errors: [auto build test ERROR on 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7] url: https://github.com/intel-lab-lkp/linux/commits/mpenttil-redhat-com/mm-unified-hmm-fault-and-migrate-device-pagewalk-paths/20260119-193100 base: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7 patch link: https://lore.kernel.org/r/20260119112502.645059-2-mpenttil%40redhat.com patch subject: [PATCH v2 1/3] mm: unified hmm fault and migrate device pagewalk paths config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260120/202601200418.y3IajnfX-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260120/202601200418.y3IajnfX-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/202601200418.y3IajnfX-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: hmm_range_fault >>> referenced by migrate_device.c:774 (mm/migrate_device.c:774) >>> vmlinux.o:(migrate_vma_setup) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki