From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 55C5A6124 for ; Tue, 9 May 2023 07:39:22 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DC39E4EF1 for ; Tue, 9 May 2023 00:39:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1683617960; x=1715153960; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=CR90iAVZpC9oJSnSC3d1toZqzaTVghY1ahTtuoBk5f4=; b=WDyEgG2Ob+MRqqTe2BZ0EJpJBHgjng/585VjgOWTWCsKjnX3tsoAdfyq v0MkqXkdv3QNMZ0q09Z9J5N1Vm+gHquHR50fBbNmw92KUy8t4+L41Gyv3 tFDzrd5m7boy0akfj3fGEpgLt6CUeg74C019/BRbJRyN9O0x7szvT/Gz9 I7JBqGl3LmI18eRcB5h1Xlpfnl/3znBIbG1xOTba4XCIPy8AtWKhW/kqN BqXwBuo0IFUEEpHErQy472AS4I3tGnAqNI+9vlHA29N8/OsjqMzC5lm8F R4bW2HQoQW9MZMaQiNjr9aV5fLIDYFipITWap+2sQDwJw1yBQLkCnW5lS w==; X-IronPort-AV: E=McAfee;i="6600,9927,10704"; a="348659842" X-IronPort-AV: E=Sophos;i="5.99,261,1677571200"; d="scan'208";a="348659842" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 May 2023 00:39:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10704"; a="788408478" X-IronPort-AV: E=Sophos;i="5.99,261,1677571200"; d="scan'208";a="788408478" Received: from lkp-server01.sh.intel.com (HELO dea6d5a4f140) ([10.239.97.150]) by FMSMGA003.fm.intel.com with ESMTP; 09 May 2023 00:39:17 -0700 Received: from kbuild by dea6d5a4f140 with local (Exim 4.96) (envelope-from ) id 1pwHwK-0001vs-2M; Tue, 09 May 2023 07:39:16 +0000 Date: Tue, 9 May 2023 15:38:30 +0800 From: kernel test robot To: Kuniyuki Iwashima , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: oe-kbuild-all@lists.linux.dev, netdev@vger.kernel.org, Kuniyuki Iwashima , syzbot Subject: Re: [PATCH v2 net] net: Fix sk->sk_stamp race in sock_recv_cmsgs(). Message-ID: <202305091558.VRASfSNN-lkp@intel.com> References: <20230508165815.45602-1-kuniyu@amazon.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: <20230508165815.45602-1-kuniyu@amazon.com> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hi Kuniyuki, kernel test robot noticed the following build warnings: [auto build test WARNING on net/main] url: https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/net-Fix-sk-sk_stamp-race-in-sock_recv_cmsgs/20230509-005901 base: net/main patch link: https://lore.kernel.org/r/20230508165815.45602-1-kuniyu%40amazon.com patch subject: [PATCH v2 net] net: Fix sk->sk_stamp race in sock_recv_cmsgs(). config: alpha-randconfig-s033-20230507 (https://download.01.org/0day-ci/archive/20230509/202305091558.VRASfSNN-lkp@intel.com/config) compiler: alpha-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/7755d082501de4c89033aed3be404114fcba1c44 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kuniyuki-Iwashima/net-Fix-sk-sk_stamp-race-in-sock_recv_cmsgs/20230509-005901 git checkout 7755d082501de4c89033aed3be404114fcba1c44 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=alpha SHELL=/bin/bash net/key/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202305091558.VRASfSNN-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) net/key/af_key.c: note: in included file (through arch/alpha/include/asm/cmpxchg.h, arch/alpha/include/asm/atomic.h, include/linux/atomic.h, ...): >> arch/alpha/include/asm/xchg.h:234:32: sparse: sparse: cast truncates bits from constant value (ffffffffc4653600 becomes 0) arch/alpha/include/asm/xchg.h:236:32: sparse: sparse: cast truncates bits from constant value (ffffffffc4653600 becomes 3600) vim +234 arch/alpha/include/asm/xchg.h a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 227 a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 228 static __always_inline unsigned long a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 229 ____cmpxchg(, volatile void *ptr, unsigned long old, unsigned long new, a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 230 int size) a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 231 { a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 232 switch (size) { a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 233 case 1: a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 @234 return ____cmpxchg(_u8, ptr, old, new); a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 235 case 2: a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 236 return ____cmpxchg(_u16, ptr, old, new); a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 237 case 4: a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 238 return ____cmpxchg(_u32, ptr, old, new); a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 239 case 8: a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 240 return ____cmpxchg(_u64, ptr, old, new); a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 241 } a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 242 __cmpxchg_called_with_bad_pointer(); a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 243 return old; a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 244 } a6209d6d71f2ab Ivan Kokshaysky 2009-03-31 245 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests