From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 99BF6C10F11 for ; Wed, 24 Apr 2019 16:31:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D928218B0 for ; Wed, 24 Apr 2019 16:31:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731026AbfDXQbl (ORCPT ); Wed, 24 Apr 2019 12:31:41 -0400 Received: from mga02.intel.com ([134.134.136.20]:17998 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730794AbfDXQbl (ORCPT ); Wed, 24 Apr 2019 12:31:41 -0400 X-Amp-Result: UNSCANNABLE X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Apr 2019 09:31:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,390,1549958400"; d="scan'208";a="226315297" Received: from lkp-server01.sh.intel.com (HELO lkp-server01) ([10.239.97.150]) by orsmga001.jf.intel.com with ESMTP; 24 Apr 2019 09:31:38 -0700 Received: from kbuild by lkp-server01 with local (Exim 4.89) (envelope-from ) id 1hJKo6-0001oH-07; Thu, 25 Apr 2019 00:31:37 +0800 Date: Thu, 25 Apr 2019 00:31:01 +0800 From: kbuild test robot To: Jiong Wang Cc: kbuild-all@01.org, alexei.starovoitov@gmail.com, daniel@iogearbox.net, bpf@vger.kernel.org, netdev@vger.kernel.org, oss-drivers@netronome.com, Jiong Wang Subject: Re: [PATCH v4 bpf-next 15/15] nfp: bpf: eliminate zero extension code-gen Message-ID: <201904250050.Z0Q6veLQ%lkp@intel.com> References: <1555349185-12508-16-git-send-email-jiong.wang@netronome.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1555349185-12508-16-git-send-email-jiong.wang@netronome.com> X-Patchwork-Hint: ignore User-Agent: Mutt/1.5.23 (2014-03-12) Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hi Jiong, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Jiong-Wang/bpf-eliminate-zero-extensions-for-sub-register-writes/20190416-191711 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot sparse warnings: (new ones prefixed by >>) >> drivers/net/ethernet/netronome/nfp/bpf/jit.c:2654:34: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned char [usertype] dst @@ got resunsigned char [usertype] dst @@ >> drivers/net/ethernet/netronome/nfp/bpf/jit.c:2654:34: sparse: expected unsigned char [usertype] dst >> drivers/net/ethernet/netronome/nfp/bpf/jit.c:2654:34: sparse: got restricted swreg [usertype] dst drivers/net/ethernet/netronome/nfp/bpf/jit.c:2680:34: sparse: sparse: incorrect type in argument 3 (different base types) @@ expected unsigned char [usertype] dst @@ got resunsigned char [usertype] dst @@ drivers/net/ethernet/netronome/nfp/bpf/jit.c:2680:34: sparse: expected unsigned char [usertype] dst drivers/net/ethernet/netronome/nfp/bpf/jit.c:2680:34: sparse: got restricted swreg [usertype] dst vim +2654 drivers/net/ethernet/netronome/nfp/bpf/jit.c 2627 2628 static int mem_ldx_skb(struct nfp_prog *nfp_prog, struct nfp_insn_meta *meta, 2629 u8 size) 2630 { 2631 swreg dst = reg_both(meta->insn.dst_reg * 2); 2632 2633 switch (meta->insn.off) { 2634 case offsetof(struct __sk_buff, len): 2635 if (size != FIELD_SIZEOF(struct __sk_buff, len)) 2636 return -EOPNOTSUPP; 2637 wrp_mov(nfp_prog, dst, plen_reg(nfp_prog)); 2638 break; 2639 case offsetof(struct __sk_buff, data): 2640 if (size != FIELD_SIZEOF(struct __sk_buff, data)) 2641 return -EOPNOTSUPP; 2642 wrp_mov(nfp_prog, dst, pptr_reg(nfp_prog)); 2643 break; 2644 case offsetof(struct __sk_buff, data_end): 2645 if (size != FIELD_SIZEOF(struct __sk_buff, data_end)) 2646 return -EOPNOTSUPP; 2647 emit_alu(nfp_prog, dst, 2648 plen_reg(nfp_prog), ALU_OP_ADD, pptr_reg(nfp_prog)); 2649 break; 2650 default: 2651 return -EOPNOTSUPP; 2652 } 2653 > 2654 wrp_zext(nfp_prog, meta, dst); 2655 2656 return 0; 2657 } 2658 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation