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b=OpGZ3yssRspFyzKe0wuuKWibepGV8CX9QpjqywYEBNasl/uWFX18DeVp3G2Owc6z6 9s5Vnyaf+U+EUIR8hehPDgyxDJJHqv8hb/VrNs7ZAJdOupkJbpsWYjVzqTmB6PMqpS LSzs87KxCwNNwy2CPBrpYr3ut8OxuiXJDMs5onxk= Date: Tue, 13 Jan 2026 09:48:01 -0800 From: Andrew Morton To: kernel test robot Cc: Petr Mladek , llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, David Hildenbrand , Linux Memory Management List Subject: Re: [akpm-mm:mm-nonmm-unstable 77/129] arch/loongarch/net/bpf_jit.c:1322:7: error: call to undeclared function '__bpf_address_lookup'; ISO C99 and later do not support implicit function declarations Message-Id: <20260113094801.d3c7b9d327959c6bcb8f4db6@linux-foundation.org> In-Reply-To: <202601140159.I4b0kwpE-lkp@intel.com> References: <202601140159.I4b0kwpE-lkp@intel.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 02046A001B X-Stat-Signature: qt6ryohdzsa7s7gi9qd4cnugeoe1t349 X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1768326483-450370 X-HE-Meta: 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 SVA== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 14 Jan 2026 01:37:38 +0800 kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-nonmm-unstable > head: 01c8de771f4a779caac5d841b1cb2207ac23330a > commit: 0f1766dc93f077061bf42cc6222bb2ade96422a4 [77/129] kallsyms/bpf: rename __bpf_address_lookup() to bpf_address_lookup() > config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20260114/202601140159.I4b0kwpE-lkp@intel.com/config) > compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260114/202601140159.I4b0kwpE-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/202601140159.I4b0kwpE-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > >> arch/loongarch/net/bpf_jit.c:1322:7: error: call to undeclared function '__bpf_address_lookup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] > 1322 | if (!__bpf_address_lookup((unsigned long)ip, &size, &offset, namebuf)) > | ^ > arch/loongarch/net/bpf_jit.c:1322:7: note: did you mean 'bpf_address_lookup'? > include/linux/filter.h:1378:5: note: 'bpf_address_lookup' declared here > 1378 | int bpf_address_lookup(unsigned long addr, unsigned long *size, > | ^ > 1 error generated. Thanks. Presumably this: --- a/arch/loongarch/net/bpf_jit.c~kallsyms-bpf-rename-__bpf_address_lookup-to-bpf_address_lookup-fix +++ a/arch/loongarch/net/bpf_jit.c @@ -1319,7 +1319,7 @@ int bpf_arch_text_poke(void *ip, enum bp /* Only poking bpf text is supported. Since kernel function entry * is set up by ftrace, we rely on ftrace to poke kernel functions. */ - if (!__bpf_address_lookup((unsigned long)ip, &size, &offset, namebuf)) + if (!bpf_address_lookup((unsigned long)ip, &size, &offset, namebuf)) return -ENOTSUPP; image = ip - offset; _