From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E56A363C6A; Tue, 23 Jun 2026 12:38:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782218291; cv=none; b=qjgbNkQBLSSxvsRTbVQuHnwZki3bYshE0+0BhkXBga/Vjyex3x/P68xbTfOh/pNXfNYQf87tQ5Rc3DAGO/+h+RHGqrKhQ8LbPkOFN6s8HbfZzgGCdgrt96fvckJ4pI0ku52ckM0UzC4fgX1BDklSnHgc11LXFW/MkJjZSgfc4nA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782218291; c=relaxed/simple; bh=h653bIgjXltHaURrSBDDbFgYViiGWwyVeGsxyv3j5wA=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=itCSi9uOkfrKc+qChPDlNXQhIVmM/JYukZWLFSxf9mUhpEM+/+b65i9ZM3d0VMsU9KdR4IhiHmWtgbVRHa1/5csunRijK3AVQVIA86Eo+ULY5Q0iw/wjNL3L0insfHsc4eGi6b0b/bTrDD43EToWJW9H4QKz8k/H73HOo3HgpII= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=VYeBQom5; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="VYeBQom5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1782218289; x=1813754289; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=h653bIgjXltHaURrSBDDbFgYViiGWwyVeGsxyv3j5wA=; b=VYeBQom5U5fJAUb8m9SNxVqHpIRWWcr5ghXVLCBABnACcdQxkpfbHcKf vivmcqzXVfEJs3MlGj4XDAX456JAnmPk0L3YwvK/HtJCktxvbr/R9Nm+S D1UOWC/ZoAr5/YvDsP+JYslz5Z4Ca8jni7DO1iy6OOSgQvIiQiJ+7vX1h WMpsO46HS3b2X0zr5BxGc4CUour7lNuuRbiX1VrDK2xdnWO0ycc8QpRNP tHO2DRYulWlHxD6uMEkEmlw11FuvdeohqzqvKW3PxQSfU+iB/v2WphELX fhJ1m6gdZg7XaTe4cI121z2b1uKnW9Z/BF+qMXUe8cPT5AZucAfTcMhVa A==; X-CSE-ConnectionGUID: +SfgrQu6Q8mNLvrnhPGUaA== X-CSE-MsgGUID: +4fHRMEdQb2VU2caUscrBg== X-IronPort-AV: E=McAfee;i="6800,10657,11826"; a="82063873" X-IronPort-AV: E=Sophos;i="6.24,220,1774335600"; d="scan'208";a="82063873" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2026 05:38:08 -0700 X-CSE-ConnectionGUID: R5zIMnSvTw2+gUuXk1c4CA== X-CSE-MsgGUID: DlZxwkCaTxWl1+N3yuucbg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.24,220,1774335600"; d="scan'208";a="249366207" Received: from lkp-server02.sh.intel.com (HELO ea128546eb3d) ([10.239.97.151]) by orviesa008.jf.intel.com with ESMTP; 23 Jun 2026 05:38:01 -0700 Received: from kbuild by ea128546eb3d with local (Exim 4.98.2) (envelope-from ) id 1wc0O2-000000002WH-1rQC; Tue, 23 Jun 2026 12:37:54 +0000 Date: Tue, 23 Jun 2026 20:36:49 +0800 From: kernel test robot To: Avinash Duduskar , ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, eddyz87@gmail.com, memxor@gmail.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, emil@etsalapatis.com, john.fastabend@gmail.com, sdf@fomichev.me, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, shuah@kernel.org, hawk@kernel.org, yatsenko@meta.com, leon.hwang@linux.dev, kpsingh@kernel.org, a.s.protopopov@gmail.com, ameryhung@gmail.com, rongtao@cestc.cn, eyal.birger@gmail.com, bpf@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH bpf-next v4 3/3] selftests/bpf: Add bpf_fib_lookup() VLAN flag tests Message-ID: <202606232057.G1fSw98N-lkp@intel.com> References: <20260623025147.1001664-4-avinash.duduskar@gmail.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260623025147.1001664-4-avinash.duduskar@gmail.com> Hi Avinash, kernel test robot noticed the following build warnings: [auto build test WARNING on a975094bf98ca97be9146f9d3b5681a6f9cf5ce3] url: https://github.com/intel-lab-lkp/linux/commits/Avinash-Duduskar/bpf-Add-BPF_FIB_LOOKUP_VLAN-flag-to-bpf_fib_lookup-helper/20260623-105336 base: a975094bf98ca97be9146f9d3b5681a6f9cf5ce3 patch link: https://lore.kernel.org/r/20260623025147.1001664-4-avinash.duduskar%40gmail.com patch subject: [PATCH bpf-next v4 3/3] selftests/bpf: Add bpf_fib_lookup() VLAN flag tests config: i386-buildonly-randconfig-006-20260623 (https://download.01.org/0day-ci/archive/20260623/202606232057.G1fSw98N-lkp@intel.com/config) compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260623/202606232057.G1fSw98N-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/202606232057.G1fSw98N-lkp@intel.com/ All warnings (new ones prefixed by >>): >> net/core/filter.c:6567:14: warning: unused variable 'net' [-Wunused-variable] 6567 | struct net *net = dev_net(skb->dev); | ^~~ 1 warning generated. vim +/net +6567 net/core/filter.c 87f5fc7e48dd31 David Ahern 2018-05-09 6563 87f5fc7e48dd31 David Ahern 2018-05-09 6564 BPF_CALL_4(bpf_skb_fib_lookup, struct sk_buff *, skb, 87f5fc7e48dd31 David Ahern 2018-05-09 6565 struct bpf_fib_lookup *, params, int, plen, u32, flags) 87f5fc7e48dd31 David Ahern 2018-05-09 6566 { 4f74fede40df8d David Ahern 2018-05-21 @6567 struct net *net = dev_net(skb->dev); f392520e15094e Avinash Duduskar 2026-06-23 6568 struct net_device *fwd_dev = NULL; 4c79579b44b187 David Ahern 2018-06-26 6569 int rc = -EAFNOSUPPORT; 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6570 bool check_mtu = false; 4f74fede40df8d David Ahern 2018-05-21 6571 87f5fc7e48dd31 David Ahern 2018-05-09 6572 if (plen < sizeof(*params)) 87f5fc7e48dd31 David Ahern 2018-05-09 6573 return -EINVAL; 87f5fc7e48dd31 David Ahern 2018-05-09 6574 31de4105f00d64 Martin KaFai Lau 2023-02-17 6575 if (flags & ~BPF_FIB_LOOKUP_MASK) 9ce64f192d161a David Ahern 2018-05-29 6576 return -EINVAL; 9ce64f192d161a David Ahern 2018-05-29 6577 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6578 if (params->tot_len) 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6579 check_mtu = true; 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6580 87f5fc7e48dd31 David Ahern 2018-05-09 6581 switch (params->family) { 87f5fc7e48dd31 David Ahern 2018-05-09 6582 #if IS_ENABLED(CONFIG_INET) 87f5fc7e48dd31 David Ahern 2018-05-09 6583 case AF_INET: f392520e15094e Avinash Duduskar 2026-06-23 6584 rc = bpf_ipv4_fib_lookup(net, params, flags, check_mtu, f392520e15094e Avinash Duduskar 2026-06-23 6585 &fwd_dev); 4f74fede40df8d David Ahern 2018-05-21 6586 break; 87f5fc7e48dd31 David Ahern 2018-05-09 6587 #endif 87f5fc7e48dd31 David Ahern 2018-05-09 6588 #if IS_ENABLED(CONFIG_IPV6) 87f5fc7e48dd31 David Ahern 2018-05-09 6589 case AF_INET6: f392520e15094e Avinash Duduskar 2026-06-23 6590 rc = bpf_ipv6_fib_lookup(net, params, flags, check_mtu, f392520e15094e Avinash Duduskar 2026-06-23 6591 &fwd_dev); 4f74fede40df8d David Ahern 2018-05-21 6592 break; 87f5fc7e48dd31 David Ahern 2018-05-09 6593 #endif 87f5fc7e48dd31 David Ahern 2018-05-09 6594 } 4f74fede40df8d David Ahern 2018-05-21 6595 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6596 if (rc == BPF_FIB_LKUP_RET_SUCCESS && !check_mtu) { f392520e15094e Avinash Duduskar 2026-06-23 6597 /* without tot_len, check the skb against the FIB-result f392520e15094e Avinash Duduskar 2026-06-23 6598 * device's MTU 2c0a10af688c02 Jesper Dangaard Brouer 2021-02-09 6599 */ f392520e15094e Avinash Duduskar 2026-06-23 6600 if (!is_skb_forwardable(fwd_dev, skb)) 4c79579b44b187 David Ahern 2018-06-26 6601 rc = BPF_FIB_LKUP_RET_FRAG_NEEDED; e1850ea9bd9eca Jesper Dangaard Brouer 2021-02-09 6602 f392520e15094e Avinash Duduskar 2026-06-23 6603 params->mtu_result = fwd_dev->mtu; /* union with tot_len */ 4f74fede40df8d David Ahern 2018-05-21 6604 } 4f74fede40df8d David Ahern 2018-05-21 6605 4c79579b44b187 David Ahern 2018-06-26 6606 return rc; 87f5fc7e48dd31 David Ahern 2018-05-09 6607 } 87f5fc7e48dd31 David Ahern 2018-05-09 6608 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki