From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0C02A3346BE; Sat, 7 Mar 2026 17:09:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772903361; cv=none; b=bTlKtMKRndJUydzP+7pgtXA9Uu7dHbe/rYHvLTN71vVkBTu10c9HkaHgCGW/DZeIbxTxBeQTthYS802NV0ae0kU2N1kLK+6hF3nVVSCUb/YVSuPcEBYO5OuFZuj0fy8uA35hebmnncPmemLvQ08OwRcwsqxQfBIWKzPeya0ZPiY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772903361; c=relaxed/simple; bh=KHFeNtfK3xhUslDy7/86IoviHngY4/bdrX3PnhqPzK4=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=GeiFLVGguLAcq/Mmy8B1c3ezVcpTOiNv9z5NPK+U4qSjqbM0Pa0tcUC6b5Qw5F69/Gw0OvB/HVdXDj+fBFsgF6o+WtVVbkR/AY8E9lSeC90CzXzaiHxtti8EcH86+/oNVtsbQL/7XiPkgDXe12emCUO/ern/jDKOTLCtr5sqDjY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=HeLwiEco; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="HeLwiEco" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772903358; x=1804439358; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=KHFeNtfK3xhUslDy7/86IoviHngY4/bdrX3PnhqPzK4=; b=HeLwiEcog0Cvpg1w2J5IIH5lEstfJ+5Wm3mhUF6ISakxx3vhTiCXRZH2 09ngW/zvdYEvg9ehHD6ZFOmW96af4mZ/zF0bmgbGdy7biB1TELNM0Ghgd 9H2qjMHrIn/rGh6gmQYkGh/f/7WvCJ2574JJu/MikQc3ca8uDRx3RDw/O SRGVoYT904STPmbYiccKpXI4ySVBRAgBhvC7eHZN1EcWLtAKbJIH6z9Mg 4hr6QYNPONfZPLeTRphmkGSxcwmY1ZqcYe7Uie4HLPhp+kvP2N2wc0wHV aRTIqSt2ErE+CooqBlP1Lcidc5cMwo1V7Phk5H2KK8FRbYRPbosc3ybD3 Q==; X-CSE-ConnectionGUID: w3vPo4NZQzm8PkXqOXN8GQ== X-CSE-MsgGUID: MS4/RMsDS0+hKamyYuj8nw== X-IronPort-AV: E=McAfee;i="6800,10657,11722"; a="85461428" X-IronPort-AV: E=Sophos;i="6.23,107,1770624000"; d="scan'208";a="85461428" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Mar 2026 09:09:18 -0800 X-CSE-ConnectionGUID: LcqLTwAYSC63ZKLMJFHkaA== X-CSE-MsgGUID: hZFPj6DbQtOdHbBDtB5gYQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,107,1770624000"; d="scan'208";a="222070247" Received: from igk-lkp-server01.igk.intel.com (HELO 9958d990ccf2) ([10.211.93.152]) by fmviesa004.fm.intel.com with ESMTP; 07 Mar 2026 09:09:11 -0800 Received: from kbuild by 9958d990ccf2 with local (Exim 4.98.2) (envelope-from ) id 1vyv9J-000000002Wf-1GSP; Sat, 07 Mar 2026 17:09:09 +0000 Date: Sat, 7 Mar 2026 18:08:13 +0100 From: kernel test robot To: Xu Kuohai , bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Yonghong Song , Puranjay Mohan , Anton Protopopov , Shahab Vahedi , Russell King , Tiezhu Yang , Hengqi Chen , Johan Almbladh , Paul Burton , Hari Bathini , Christophe Leroy , Naveen N Rao , Luke Nelson , Xi Wang , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Pu Lehui , Ilya Leoshkevich , Heiko Carstens , Vasily Gorbik , "David S . Miller" , Wang YanQing Subject: Re: [bpf-next v7 1/5] bpf: Move constants blinding from JIT to verifier Message-ID: <202603071836.igZbCyrE-lkp@intel.com> References: <20260307103949.2340104-2-xukuohai@huaweicloud.com> Precedence: bulk X-Mailing-List: llvm@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: <20260307103949.2340104-2-xukuohai@huaweicloud.com> Hi Xu, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Xu-Kuohai/bpf-Move-constants-blinding-from-JIT-to-verifier/20260307-181538 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20260307103949.2340104-2-xukuohai%40huaweicloud.com patch subject: [bpf-next v7 1/5] bpf: Move constants blinding from JIT to verifier config: x86_64-kexec (https://download.01.org/0day-ci/archive/20260307/202603071836.igZbCyrE-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/20260307/202603071836.igZbCyrE-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/202603071836.igZbCyrE-lkp@intel.com/ All errors (new ones prefixed by >>): >> kernel/bpf/verifier.c:23100:9: error: call to undeclared function 'bpf_jit_blind_constants'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 23100 | err = bpf_jit_blind_constants(env); | ^ 1 error generated. vim +/bpf_jit_blind_constants +23100 kernel/bpf/verifier.c 23087 23088 static int fixup_call_args(struct bpf_verifier_env *env) 23089 { 23090 #ifndef CONFIG_BPF_JIT_ALWAYS_ON 23091 struct bpf_prog *prog = env->prog; 23092 struct bpf_insn *insn = prog->insnsi; 23093 bool has_kfunc_call = bpf_prog_has_kfunc_call(prog); 23094 int i, depth; 23095 #endif 23096 int err = 0; 23097 23098 if (env->prog->jit_requested && 23099 !bpf_prog_is_offloaded(env->prog->aux)) { 23100 err = bpf_jit_blind_constants(env); 23101 if (err) 23102 return err; 23103 err = jit_subprogs(env); 23104 if (err == 0) 23105 return 0; 23106 if (err == -EFAULT) 23107 return err; 23108 } 23109 #ifndef CONFIG_BPF_JIT_ALWAYS_ON 23110 if (has_kfunc_call) { 23111 verbose(env, "calling kernel functions are not allowed in non-JITed programs\n"); 23112 return -EINVAL; 23113 } 23114 if (env->subprog_cnt > 1 && env->prog->aux->tail_call_reachable) { 23115 /* When JIT fails the progs with bpf2bpf calls and tail_calls 23116 * have to be rejected, since interpreter doesn't support them yet. 23117 */ 23118 verbose(env, "tail_calls are not allowed in non-JITed programs with bpf-to-bpf calls\n"); 23119 return -EINVAL; 23120 } 23121 for (i = 0; i < prog->len; i++, insn++) { 23122 if (bpf_pseudo_func(insn)) { 23123 /* When JIT fails the progs with callback calls 23124 * have to be rejected, since interpreter doesn't support them yet. 23125 */ 23126 verbose(env, "callbacks are not allowed in non-JITed programs\n"); 23127 return -EINVAL; 23128 } 23129 23130 if (!bpf_pseudo_call(insn)) 23131 continue; 23132 depth = get_callee_stack_depth(env, insn, i); 23133 if (depth < 0) 23134 return depth; 23135 bpf_patch_call_args(insn, depth); 23136 } 23137 err = 0; 23138 #endif 23139 return err; 23140 } 23141 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki