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X-CSE-ConnectionGUID: IPGJlGEtTsexOzBzG5eVLg== X-CSE-MsgGUID: vFov3ttuTyiwIef8gHIybw== X-IronPort-AV: E=McAfee;i="6800,10657,11725"; a="85717241" X-IronPort-AV: E=Sophos;i="6.23,113,1770624000"; d="scan'208";a="85717241" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Mar 2026 15:10:35 -0700 X-CSE-ConnectionGUID: 8YtaUo58SPa+QM0pyMdfBw== X-CSE-MsgGUID: 7DKPCwGlR32znkWSeRkF8A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,113,1770624000"; d="scan'208";a="224948111" Received: from lkp-server01.sh.intel.com (HELO 418530b1a366) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 10 Mar 2026 15:10:32 -0700 Received: from kbuild by 418530b1a366 with local (Exim 4.98.2) (envelope-from ) id 1w05Ha-000000000Ma-0yAa; Tue, 10 Mar 2026 22:10:30 +0000 Date: Wed, 11 Mar 2026 06:10:25 +0800 From: kernel test robot To: Maciej Fijalkowski , netdev@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, bpf@vger.kernel.org, magnus.karlsson@intel.com, stfomichev@gmail.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, Maciej Fijalkowski Subject: Re: [PATCH net-next] xsk: use __xsk_rcv_zc_safe for ZC multi-buffer Rx processing Message-ID: <202603110534.EYw1bSxj-lkp@intel.com> References: <20260310133024.422464-1-maciej.fijalkowski@intel.com> Precedence: bulk X-Mailing-List: netdev@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: <20260310133024.422464-1-maciej.fijalkowski@intel.com> Hi Maciej, kernel test robot noticed the following build errors: [auto build test ERROR on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Maciej-Fijalkowski/xsk-use-__xsk_rcv_zc_safe-for-ZC-multi-buffer-Rx-processing/20260310-222557 base: net-next/main patch link: https://lore.kernel.org/r/20260310133024.422464-1-maciej.fijalkowski%40intel.com patch subject: [PATCH net-next] xsk: use __xsk_rcv_zc_safe for ZC multi-buffer Rx processing config: sparc64-allmodconfig (https://download.01.org/0day-ci/archive/20260311/202603110534.EYw1bSxj-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 122f0b13a237b5024747b4ee99002590cc9a220a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260311/202603110534.EYw1bSxj-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/202603110534.EYw1bSxj-lkp@intel.com/ All errors (new ones prefixed by >>): >> net/xdp/xsk.c:188:2: error: call to undeclared function '__xsk_rcv_zc_safe'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 188 | __xsk_rcv_zc_safe(xs, xskb, len, contd); | ^ net/xdp/xsk.c:188:2: note: did you mean '__xsk_rcv_zc'? net/xdp/xsk.c:146:12: note: '__xsk_rcv_zc' declared here 146 | static int __xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff_xsk *xskb, u32 len, | ^ 1 error generated. vim +/__xsk_rcv_zc_safe +188 net/xdp/xsk.c 162 163 static int xsk_rcv_zc(struct xdp_sock *xs, struct xdp_buff *xdp, u32 len) 164 { 165 struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp); 166 u32 frags = xdp_buff_has_frags(xdp); 167 struct xdp_buff_xsk *pos, *tmp; 168 struct list_head *xskb_list; 169 u32 contd = 0; 170 u32 num_desc; 171 int err; 172 173 if (likely(!frags)) { 174 err = __xsk_rcv_zc(xs, xskb, len, contd); 175 if (err) 176 goto err; 177 return 0; 178 } 179 180 contd = XDP_PKT_CONTD; 181 num_desc = xdp_get_shared_info_from_buff(xdp)->nr_frags + 1; 182 if (xskq_prod_nb_free(xs->rx, num_desc) < num_desc) { 183 xs->rx_queue_full++; 184 err = -ENOBUFS; 185 goto err; 186 } 187 > 188 __xsk_rcv_zc_safe(xs, xskb, len, contd); 189 xskb_list = &xskb->pool->xskb_list; 190 list_for_each_entry_safe(pos, tmp, xskb_list, list_node) { 191 if (list_is_singular(xskb_list)) 192 contd = 0; 193 len = pos->xdp.data_end - pos->xdp.data; 194 __xsk_rcv_zc_safe(xs, pos, len, contd); 195 list_del_init(&pos->list_node); 196 } 197 198 return 0; 199 err: 200 xsk_buff_free(xdp); 201 return err; 202 } 203 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki