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X-CSE-ConnectionGUID: DKeuaU/aRfukK/F8aXZlfw== X-CSE-MsgGUID: pBqlObqETQSAfEnLiiaxnQ== X-IronPort-AV: E=McAfee;i="6800,10657,11651"; a="72010300" X-IronPort-AV: E=Sophos;i="6.21,172,1763452800"; d="scan'208";a="72010300" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Dec 2025 16:33:07 -0800 X-CSE-ConnectionGUID: buiGrgzcTvytMMUaO37q0Q== X-CSE-MsgGUID: V5zvbk7rTXObV3Jws+UL4Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,172,1763452800"; d="scan'208";a="230557269" Received: from lkp-server02.sh.intel.com (HELO dd3453e2b682) ([10.239.97.151]) by orviesa002.jf.intel.com with ESMTP; 23 Dec 2025 16:33:03 -0800 Received: from kbuild by dd3453e2b682 with local (Exim 4.98.2) (envelope-from ) id 1vYCoE-000000002Vp-13K0; Wed, 24 Dec 2025 00:32:58 +0000 Date: Wed, 24 Dec 2025 08:32:08 +0800 From: kernel test robot To: Yazhou Tang , bpf@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, tangyazhou518@outlook.com, shenghaoyuan0928@163.com, ziye@zju.edu.cn Subject: Re: [PATCH bpf-next v2 1/2] bpf: Add interval and tnum analysis for signed and unsigned BPF_DIV Message-ID: <202512240848.WegL0AOr-lkp@intel.com> References: <20251223091120.2413435-2-tangyazhou@zju.edu.cn> Precedence: bulk X-Mailing-List: bpf@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: <20251223091120.2413435-2-tangyazhou@zju.edu.cn> Hi Yazhou, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Yazhou-Tang/bpf-Add-interval-and-tnum-analysis-for-signed-and-unsigned-BPF_DIV/20251223-171652 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20251223091120.2413435-2-tangyazhou%40zju.edu.cn patch subject: [PATCH bpf-next v2 1/2] bpf: Add interval and tnum analysis for signed and unsigned BPF_DIV config: alpha-randconfig-r131-20251224 (https://download.01.org/0day-ci/archive/20251224/202512240848.WegL0AOr-lkp@intel.com/config) compiler: alpha-linux-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512240848.WegL0AOr-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/202512240848.WegL0AOr-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> kernel/bpf/tnum.c:16:19: sparse: sparse: symbol 'tnum_empty' was not declared. Should it be static? vim +/tnum_empty +16 kernel/bpf/tnum.c 11 12 #define TNUM(_v, _m) (struct tnum){.value = _v, .mask = _m} 13 /* A completely unknown value */ 14 const struct tnum tnum_unknown = { .value = 0, .mask = -1 }; 15 /* Not well-formed Tnum, whose concrete value is empty set. */ > 16 const struct tnum tnum_empty = { .value = -1, .mask = -1 }; 17 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki