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a="1571153" X-IronPort-AV: E=Sophos;i="6.27,179,1787036400"; d="scan'208";a="1571153" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Oct 2026 07:44:50 -0700 X-CSE-ConnectionGUID: +0iof/m5TlKvDtfl6P1bWQ== X-CSE-MsgGUID: wiHeEfSzRta+QfuDd07drw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,179,1787036400"; d="scan'208";a="4431735" Received: from lkp-server01.sh.intel.com (HELO 0caa9d2d175c) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 26 Oct 2026 07:44:48 -0700 Received: from kbuild by 0caa9d2d175c with local (Exim 4.98.2) (envelope-from ) id 1xLLwK-00000000W4Q-3vjC; Mon, 26 Oct 2026 14:44:44 +0000 Date: Mon, 26 Oct 2026 22:43:55 +0800 From: kernel test robot To: Alexei Starovoitov , bpf@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com Subject: Re: [PATCH bpf 07/81] bpf: One time slice of may_goto for a run of a prog Message-ID: <202610262241.4DF09B1A-lkp@intel.com> References: <20261026025943.404450-8-alexei.starovoitov@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: <20261026025943.404450-8-alexei.starovoitov@gmail.com> Hi Alexei, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf/master] url: https://github.com/intel-lab-lkp/linux/commits/Alexei-Starovoitov/selftests-bpf-Remove-tests-for-global-data-in-arena/20261026-025822 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master patch link: https://lore.kernel.org/r/20261026025943.404450-8-alexei.starovoitov%40gmail.com patch subject: [PATCH bpf 07/81] bpf: One time slice of may_goto for a run of a prog config: um-defconfig (https://download.01.org/0day-ci/archive/20261026/202610262241.4DF09B1A-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 186e70f4e6a1521991d2340d3d49b23b1beff11f) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261026/202610262241.4DF09B1A-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/202610262241.4DF09B1A-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/bpf/core.c:3633:6: warning: no previous prototype for function 'bpf_prog_begin_run' [-Wmissing-prototypes] 3633 | void bpf_prog_begin_run(const struct bpf_prog *prog) | ^ kernel/bpf/core.c:3633:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 3633 | void bpf_prog_begin_run(const struct bpf_prog *prog) | ^ | static 1 warning generated. vim +/bpf_prog_begin_run +3633 kernel/bpf/core.c 3628 3629 /* 3630 * The kernel is about to call an async callback of @prog on this cpu: a run begins. 3631 * The main prog does the same in its first insns. 3632 */ > 3633 void bpf_prog_begin_run(const struct bpf_prog *prog) 3634 { 3635 struct bpf_prog_aux *aux; 3636 3637 if (!prog) 3638 return; 3639 aux = prog->aux->main_prog_aux; 3640 if (aux->may_goto_budget) { 3641 this_cpu_write(aux->may_goto_budget->start, 0); 3642 this_cpu_write(aux->may_goto_budget->count, BPF_MAX_TIMED_LOOPS); 3643 } 3644 } 3645 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki