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X-CSE-ConnectionGUID: OIIUw1EjS1Sv3I/lBBmsKQ== X-CSE-MsgGUID: 4Sf7Kje6RpGlQxGDsGQcbw== X-IronPort-AV: E=McAfee;i="6800,10657,11648"; a="71816125" X-IronPort-AV: E=Sophos;i="6.21,164,1763452800"; d="scan'208";a="71816125" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Dec 2025 11:57:47 -0800 X-CSE-ConnectionGUID: tiJYGBzFTFKRocu7cgTqBw== X-CSE-MsgGUID: 3qyts4rVRluaI8YQ/o2T7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,164,1763452800"; d="scan'208";a="199073276" Received: from igk-lkp-server01.igk.intel.com (HELO 8a0c053bdd2a) ([10.211.93.152]) by fmviesa006.fm.intel.com with ESMTP; 20 Dec 2025 11:57:46 -0800 Received: from kbuild by 8a0c053bdd2a with local (Exim 4.98.2) (envelope-from ) id 1vX35E-000000004lk-2cyG; Sat, 20 Dec 2025 19:57:44 +0000 Date: Sat, 20 Dec 2025 20:56:45 +0100 From: kernel test robot To: Roman Gushchin Cc: oe-kbuild-all@lists.linux.dev Subject: Re: [PATCH bpf-next v2 4/7] mm: introduce BPF kfuncs to access memcg statistics and events Message-ID: <202512202007.vewIitSc-lkp@intel.com> References: <20251220041250.372179-5-roman.gushchin@linux.dev> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251220041250.372179-5-roman.gushchin@linux.dev> Hi Roman, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Roman-Gushchin/mm-declare-memcg_page_state_output-in-memcontrol-h/20251220-121603 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20251220041250.372179-5-roman.gushchin%40linux.dev patch subject: [PATCH bpf-next v2 4/7] mm: introduce BPF kfuncs to access memcg statistics and events config: i386-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20251220/202512202007.vewIitSc-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/20251220/202512202007.vewIitSc-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/202512202007.vewIitSc-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: mem_cgroup_usage >>> referenced by bpf_memcontrol.c:103 (mm/bpf_memcontrol.c:103) >>> mm/bpf_memcontrol.o:(bpf_mem_cgroup_usage) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki