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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D9B6CC433F5 for ; Sun, 13 Mar 2022 14:25:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234609AbiCMO0M (ORCPT ); Sun, 13 Mar 2022 10:26:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231244AbiCMO0J (ORCPT ); Sun, 13 Mar 2022 10:26:09 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6893085958 for ; Sun, 13 Mar 2022 07:25:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647181501; x=1678717501; h=date:from:to:cc:subject:message-id:mime-version; bh=GsoMy3pNwX+miIvAX+S9WS81Z/reAnObWZHUu459PP8=; b=hYXHXk7NuhEJ/4wDBUhxqpJFkQsbmd6QOauRvLX8ESpc8WeJ57yHDkOm XP30yHgts4Ajz1TZAwbflmVXidPp/aod4Zurj3i0uASydzDtgNFLhbTFU yJJ0KL8RF+mDTHE5HpWzkAI1NGN/s3xAHhbIBuQ0VyV+hB/RtHFnxgJqv dZg/OY6fe48MZg+AQBz9DA61ADZOyhnpSGCGQK1HuO3hiqk9FB+u+KicJ EU+o9+DBR4AWE4ICO/ipr6aZRYXxcLcRKdwr52i8Ji8Wl3XxSLjbjFcB2 ex6zHHdS+UfJsMa4jdrhef4zkgF0SD57JiE0ARPLbE1i9DTwNCHKSD/Fk w==; X-IronPort-AV: E=McAfee;i="6200,9189,10285"; a="280628290" X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="280628290" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Mar 2022 07:25:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,178,1643702400"; d="scan'208";a="515113492" Received: from lkp-server02.sh.intel.com (HELO 89b41b6ae01c) ([10.239.97.151]) by orsmga006.jf.intel.com with ESMTP; 13 Mar 2022 07:24:58 -0700 Received: from kbuild by 89b41b6ae01c with local (Exim 4.92) (envelope-from ) id 1nTP9W-000919-0h; Sun, 13 Mar 2022 14:24:58 +0000 Date: Sun, 13 Mar 2022 22:24:44 +0800 From: kernel test robot To: Hannes Reinecke Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [hare-scsi-devel:tls-upcall.v4 118/156] crypto/hkdf.c:26:5: warning: no previous prototype for function 'hkdf_extract' Message-ID: <202203132236.VeI6E96J-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git tls-upcall.v4 head: d2416ecdb6b03fc2e4aa40b20cdf919322713224 commit: ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 [118/156] crypto,fs: Separate out hkdf_extract() and hkdf_expand() config: hexagon-randconfig-r045-20220313 (https://download.01.org/0day-ci/archive/20220313/202203132236.VeI6E96J-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0467eb2cb7654c15ae366967ef35093c5724c416) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git/commit/?id=ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 git remote add hare-scsi-devel https://git.kernel.org/pub/scm/linux/kernel/git/hare/scsi-devel.git git fetch --no-tags hare-scsi-devel tls-upcall.v4 git checkout ea4c6fc32e5e02a1e4c841f462c3a931b8838f33 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> crypto/hkdf.c:26:5: warning: no previous prototype for function 'hkdf_extract' [-Wmissing-prototypes] int hkdf_extract(struct crypto_shash *hmac_tfm, const u8 *ikm, ^ crypto/hkdf.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int hkdf_extract(struct crypto_shash *hmac_tfm, const u8 *ikm, ^ static >> crypto/hkdf.c:52:5: warning: no previous prototype for function 'hkdf_expand' [-Wmissing-prototypes] int hkdf_expand(struct crypto_shash *hmac_tfm, ^ crypto/hkdf.c:52:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int hkdf_expand(struct crypto_shash *hmac_tfm, ^ static 2 warnings generated. vim +/hkdf_extract +26 crypto/hkdf.c 14 15 /* 16 * HKDF consists of two steps: 17 * 18 * 1. HKDF-Extract: extract a pseudorandom key of length HKDF_HASHLEN bytes from 19 * the input keying material and optional salt. 20 * 2. HKDF-Expand: expand the pseudorandom key into output keying material of 21 * any length, parameterized by an application-specific info string. 22 * 23 */ 24 25 /* HKDF-Extract (RFC 5869 section 2.2), unsalted */ > 26 int hkdf_extract(struct crypto_shash *hmac_tfm, const u8 *ikm, 27 unsigned int ikmlen, u8 *prk) 28 { 29 unsigned int prklen = crypto_shash_digestsize(hmac_tfm); 30 u8 *default_salt; 31 int err; 32 33 default_salt = kzalloc(prklen, GFP_KERNEL); 34 if (!default_salt) 35 return -ENOMEM; 36 err = crypto_shash_setkey(hmac_tfm, default_salt, prklen); 37 if (!err) 38 err = crypto_shash_tfm_digest(hmac_tfm, ikm, ikmlen, prk); 39 40 kfree(default_salt); 41 return err; 42 } 43 EXPORT_SYMBOL_GPL(hkdf_extract); 44 45 /* 46 * HKDF-Expand (RFC 5869 section 2.3). 47 * This expands the pseudorandom key, which was already keyed into @hmac_tfm, 48 * into @okmlen bytes of output keying material parameterized by the 49 * application-specific @info of length @infolen bytes. 50 * This is thread-safe and may be called by multiple threads in parallel. 51 */ > 52 int hkdf_expand(struct crypto_shash *hmac_tfm, --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org