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X-CSE-ConnectionGUID: ucijsmVfQSGFsrGIyxGV5A== X-CSE-MsgGUID: fJr17zJCTXKCqmKQ3VCZiw== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="67161048" X-IronPort-AV: E=Sophos;i="6.19,247,1754982000"; d="scan'208";a="67161048" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Oct 2025 07:56:02 -0700 X-CSE-ConnectionGUID: KnTCe76uSE2LBBnJ07TObg== X-CSE-MsgGUID: uekKQdbfTbCUGBULnMqAFQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,247,1754982000"; d="scan'208";a="214836268" Received: from lkp-server02.sh.intel.com (HELO 66d7546c76b2) ([10.239.97.151]) by fmviesa001.fm.intel.com with ESMTP; 22 Oct 2025 07:55:58 -0700 Received: from kbuild by 66d7546c76b2 with local (Exim 4.96) (envelope-from ) id 1vBaEu-000CRU-3C; Wed, 22 Oct 2025 14:55:26 +0000 Date: Wed, 22 Oct 2025 22:53:14 +0800 From: kernel test robot To: Maciej Fijalkowski , bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, netdev@vger.kernel.org, magnus.karlsson@intel.com, aleksander.lobakin@intel.com, ilias.apalodimas@linaro.org, toke@redhat.com, lorenzo@kernel.org, kuba@kernel.org, Maciej Fijalkowski , syzbot+ff145014d6b0ce64a173@syzkaller.appspotmail.com, Ihor Solodrai , Octavian Purdila Subject: Re: [PATCH v3 bpf 1/2] xdp: introduce xdp_convert_skb_to_buff() Message-ID: <202510222209.D4RDn4DI-lkp@intel.com> References: <20251022125209.2649287-2-maciej.fijalkowski@intel.com> 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: <20251022125209.2649287-2-maciej.fijalkowski@intel.com> Hi Maciej, kernel test robot noticed the following build errors: [auto build test ERROR on bpf/master] url: https://github.com/intel-lab-lkp/linux/commits/Maciej-Fijalkowski/xdp-introduce-xdp_convert_skb_to_buff/20251022-210958 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master patch link: https://lore.kernel.org/r/20251022125209.2649287-2-maciej.fijalkowski%40intel.com patch subject: [PATCH v3 bpf 1/2] xdp: introduce xdp_convert_skb_to_buff() config: i386-buildonly-randconfig-002-20251022 (https://download.01.org/0day-ci/archive/20251022/202510222209.D4RDn4DI-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/20251022/202510222209.D4RDn4DI-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/202510222209.D4RDn4DI-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from fs/select.c:33: In file included from include/net/busy_poll.h:19: >> include/net/xdp.h:398:10: error: incompatible pointer to integer conversion assigning to 'u32' (aka 'unsigned int') from 'sk_buff_data_t' (aka 'unsigned char *') [-Wint-conversion] 398 | pkt_len = skb->tail - skb->mac_header; | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. vim +398 include/net/xdp.h 386 387 static inline 388 void xdp_convert_skb_to_buff(struct sk_buff *skb, struct xdp_buff *xdp, 389 struct xdp_rxq_info *xdp_rxq) 390 { 391 u32 frame_sz, pkt_len; 392 393 /* SKB "head" area always have tailroom for skb_shared_info */ 394 frame_sz = skb_end_pointer(skb) - skb->head; 395 frame_sz += SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); 396 397 DEBUG_NET_WARN_ON_ONCE(!skb_mac_header_was_set(skb)); > 398 pkt_len = skb->tail - skb->mac_header; 399 400 xdp_init_buff(xdp, frame_sz, xdp_rxq); 401 xdp_prepare_buff(xdp, skb->head, skb->mac_header, pkt_len, true); 402 403 if (skb_is_nonlinear(skb)) { 404 skb_shinfo(skb)->xdp_frags_size = skb->data_len; 405 xdp_buff_set_frags_flag(xdp); 406 } else { 407 xdp_buff_clear_frags_flag(xdp); 408 } 409 410 xdp->rxq->mem.type = page_pool_page_is_pp(virt_to_head_page(xdp->data)) ? 411 MEM_TYPE_PAGE_POOL : MEM_TYPE_PAGE_SHARED; 412 } 413 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki