linux-kernel - Re: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write

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Message-ID: <202508310252.E5uFh1hx-lkp@intel.com>
Date: Sun, 31 Aug 2025 02:56:10 +0800
From: kernel test robot <lkp@...el.com>
To: "Kalyazin, Nikita" <kalyazin@...zon.co.uk>,
	"pbonzini@...hat.com" <pbonzini@...hat.com>,
	"shuah@...nel.org" <shuah@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kselftest@...r.kernel.org" <linux-kselftest@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"michael.day@....com" <michael.day@....com>,
	"david@...hat.com" <david@...hat.com>,
	"jthoughton@...gle.com" <jthoughton@...gle.com>,
	"Roy, Patrick" <roypat@...zon.co.uk>,
	"Thomson, Jack" <jackabt@...zon.co.uk>,
	"Manwaring, Derek" <derekmn@...zon.com>,
	"Cali, Marco" <xmarcalx@...zon.co.uk>,
	"Kalyazin, Nikita" <kalyazin@...zon.co.uk>
Subject: Re: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write

Hi Nikita,

kernel test robot noticed the following build errors:

[auto build test ERROR on a6ad54137af92535cfe32e19e5f3bc1bb7dbd383]

url:    https://github.com/intel-lab-lkp/linux/commits/Kalyazin-Nikita/KVM-guest_memfd-add-generic-population-via-write/20250828-233437
base:   a6ad54137af92535cfe32e19e5f3bc1bb7dbd383
patch link:    https://lore.kernel.org/r/20250828153049.3922-2-kalyazin%40amazon.com
patch subject: [PATCH v4 1/2] KVM: guest_memfd: add generic population via write
config: x86_64-randconfig-001-20250830 (https://download.01.org/0day-ci/archive/20250831/202508310252.E5uFh1hx-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/20250831/202508310252.E5uFh1hx-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508310252.E5uFh1hx-lkp@intel.com/

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "filemap_remove_folio" [arch/x86/kvm/kvm.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki