From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: multipart/mixed; boundary="===============6963717297605873610==" MIME-Version: 1.0 From: kernel test robot To: kbuild-all@lists.01.org Subject: include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) Date: Wed, 24 Nov 2021 06:19:48 +0800 Message-ID: <202111240654.4qXNBmtC-lkp@intel.com> List-Id: --===============6963717297605873610== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git = master head: 136057256686de39cc3a07c2e39ef6bc43003ff6 commit: c7178cdecdbef8321f418fac55f3afaca3bb4c96 locking/atomic: h8300: use= asm-generic exclusively date: 6 months ago config: h8300-randconfig-s031-20211117 (https://download.01.org/0day-ci/arc= hive/20211124/202111240654.4qXNBmtC-lkp(a)intel.com/config.gz) compiler: h8300-linux-gcc (GCC) 11.2.0 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-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.gi= t/commit/?id=3Dc7178cdecdbef8321f418fac55f3afaca3bb4c96 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/gi= t/torvalds/linux.git git fetch --no-tags linus master git checkout c7178cdecdbef8321f418fac55f3afaca3bb4c96 # save the config file to linux build tree COMPILER_INSTALL_PATH=3D$HOME/0day COMPILER=3Dgcc-11.2.0 make.cross= C=3D1 CF=3D'-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=3Dbuild_dir ARCH=3Dh= 8300 SHELL=3D/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) lib/atomic64_test.c: note: in included file (through arch/h8300/include/= generated/asm/cmpxchg.h, include/asm-generic/atomic.h, arch/h8300/include/g= enerated/asm/atomic.h, ...): >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits= from constant value (deadbeef becomes beef) lib/atomic64_test.c: note: in included file (through include/asm-generic= /cmpxchg.h, arch/h8300/include/generated/asm/cmpxchg.h, include/asm-generic= /atomic.h, ...): >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncate= s bits from constant value (deadbeef becomes beef) vim +37 include/asm-generic/cmpxchg.h b4816afa398670 David Howells 2012-03-28 24 = b4816afa398670 David Howells 2012-03-28 25 static inline b4816afa398670 David Howells 2012-03-28 26 unsigned long __xchg(unsigned = long x, volatile void *ptr, int size) b4816afa398670 David Howells 2012-03-28 27 { b4816afa398670 David Howells 2012-03-28 28 unsigned long ret, flags; b4816afa398670 David Howells 2012-03-28 29 = b4816afa398670 David Howells 2012-03-28 30 switch (size) { b4816afa398670 David Howells 2012-03-28 31 case 1: b4816afa398670 David Howells 2012-03-28 32 #ifdef __xchg_u8 b4816afa398670 David Howells 2012-03-28 33 return __xchg_u8(x, ptr); b4816afa398670 David Howells 2012-03-28 34 #else b4816afa398670 David Howells 2012-03-28 35 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 36 ret =3D *(volatile u8 *)ptr; b4816afa398670 David Howells 2012-03-28 @37 *(volatile u8 *)ptr =3D x; b4816afa398670 David Howells 2012-03-28 38 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 39 return ret; b4816afa398670 David Howells 2012-03-28 40 #endif /* __xchg_u8 */ b4816afa398670 David Howells 2012-03-28 41 = b4816afa398670 David Howells 2012-03-28 42 case 2: b4816afa398670 David Howells 2012-03-28 43 #ifdef __xchg_u16 b4816afa398670 David Howells 2012-03-28 44 return __xchg_u16(x, ptr); b4816afa398670 David Howells 2012-03-28 45 #else b4816afa398670 David Howells 2012-03-28 46 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 47 ret =3D *(volatile u16 *)ptr; b4816afa398670 David Howells 2012-03-28 @48 *(volatile u16 *)ptr =3D x; b4816afa398670 David Howells 2012-03-28 49 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 50 return ret; b4816afa398670 David Howells 2012-03-28 51 #endif /* __xchg_u16 */ b4816afa398670 David Howells 2012-03-28 52 = b4816afa398670 David Howells 2012-03-28 53 case 4: b4816afa398670 David Howells 2012-03-28 54 #ifdef __xchg_u32 b4816afa398670 David Howells 2012-03-28 55 return __xchg_u32(x, ptr); b4816afa398670 David Howells 2012-03-28 56 #else b4816afa398670 David Howells 2012-03-28 57 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 58 ret =3D *(volatile u32 *)ptr; b4816afa398670 David Howells 2012-03-28 59 *(volatile u32 *)ptr =3D x; b4816afa398670 David Howells 2012-03-28 60 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 61 return ret; b4816afa398670 David Howells 2012-03-28 62 #endif /* __xchg_u32 */ b4816afa398670 David Howells 2012-03-28 63 = :::::: The code at line 37 was first introduced by commit :::::: b4816afa3986704d1404fc48e931da5135820472 Move the asm-generic/system= .h xchg() implementation to asm-generic/cmpxchg.h :::::: TO: David Howells :::::: CC: David Howells --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org --===============6963717297605873610==-- 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 576D9C433F5 for ; Tue, 23 Nov 2021 22:19:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232909AbhKWWXF (ORCPT ); Tue, 23 Nov 2021 17:23:05 -0500 Received: from mga02.intel.com ([134.134.136.20]:51014 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229992AbhKWWXE (ORCPT ); Tue, 23 Nov 2021 17:23:04 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10177"; a="222368402" X-IronPort-AV: E=Sophos;i="5.87,258,1631602800"; d="scan'208";a="222368402" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Nov 2021 14:19:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,258,1631602800"; d="scan'208";a="497444452" Received: from lkp-server02.sh.intel.com (HELO 9e1e9f9b3bcb) ([10.239.97.151]) by orsmga007.jf.intel.com with ESMTP; 23 Nov 2021 14:19:54 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mpe8n-0002MS-DF; Tue, 23 Nov 2021 22:19:53 +0000 Date: Wed, 24 Nov 2021 06:19:48 +0800 From: kernel test robot To: Mark Rutland Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Peter Zijlstra Subject: include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) Message-ID: <202111240654.4qXNBmtC-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/torvalds/linux.git master head: 136057256686de39cc3a07c2e39ef6bc43003ff6 commit: c7178cdecdbef8321f418fac55f3afaca3bb4c96 locking/atomic: h8300: use asm-generic exclusively date: 6 months ago config: h8300-randconfig-s031-20211117 (https://download.01.org/0day-ci/archive/20211124/202111240654.4qXNBmtC-lkp@intel.com/config.gz) compiler: h8300-linux-gcc (GCC) 11.2.0 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-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7178cdecdbef8321f418fac55f3afaca3bb4c96 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout c7178cdecdbef8321f418fac55f3afaca3bb4c96 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=h8300 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) lib/atomic64_test.c: note: in included file (through arch/h8300/include/generated/asm/cmpxchg.h, include/asm-generic/atomic.h, arch/h8300/include/generated/asm/atomic.h, ...): >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg.h:37:39: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg.h:48:40: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) lib/atomic64_test.c: note: in included file (through include/asm-generic/cmpxchg.h, arch/h8300/include/generated/asm/cmpxchg.h, include/asm-generic/atomic.h, ...): >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) >> include/asm-generic/cmpxchg-local.h:30:42: sparse: sparse: cast truncates bits from constant value (deadbeef becomes ef) >> include/asm-generic/cmpxchg-local.h:34:44: sparse: sparse: cast truncates bits from constant value (deadbeef becomes beef) vim +37 include/asm-generic/cmpxchg.h b4816afa398670 David Howells 2012-03-28 24 b4816afa398670 David Howells 2012-03-28 25 static inline b4816afa398670 David Howells 2012-03-28 26 unsigned long __xchg(unsigned long x, volatile void *ptr, int size) b4816afa398670 David Howells 2012-03-28 27 { b4816afa398670 David Howells 2012-03-28 28 unsigned long ret, flags; b4816afa398670 David Howells 2012-03-28 29 b4816afa398670 David Howells 2012-03-28 30 switch (size) { b4816afa398670 David Howells 2012-03-28 31 case 1: b4816afa398670 David Howells 2012-03-28 32 #ifdef __xchg_u8 b4816afa398670 David Howells 2012-03-28 33 return __xchg_u8(x, ptr); b4816afa398670 David Howells 2012-03-28 34 #else b4816afa398670 David Howells 2012-03-28 35 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 36 ret = *(volatile u8 *)ptr; b4816afa398670 David Howells 2012-03-28 @37 *(volatile u8 *)ptr = x; b4816afa398670 David Howells 2012-03-28 38 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 39 return ret; b4816afa398670 David Howells 2012-03-28 40 #endif /* __xchg_u8 */ b4816afa398670 David Howells 2012-03-28 41 b4816afa398670 David Howells 2012-03-28 42 case 2: b4816afa398670 David Howells 2012-03-28 43 #ifdef __xchg_u16 b4816afa398670 David Howells 2012-03-28 44 return __xchg_u16(x, ptr); b4816afa398670 David Howells 2012-03-28 45 #else b4816afa398670 David Howells 2012-03-28 46 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 47 ret = *(volatile u16 *)ptr; b4816afa398670 David Howells 2012-03-28 @48 *(volatile u16 *)ptr = x; b4816afa398670 David Howells 2012-03-28 49 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 50 return ret; b4816afa398670 David Howells 2012-03-28 51 #endif /* __xchg_u16 */ b4816afa398670 David Howells 2012-03-28 52 b4816afa398670 David Howells 2012-03-28 53 case 4: b4816afa398670 David Howells 2012-03-28 54 #ifdef __xchg_u32 b4816afa398670 David Howells 2012-03-28 55 return __xchg_u32(x, ptr); b4816afa398670 David Howells 2012-03-28 56 #else b4816afa398670 David Howells 2012-03-28 57 local_irq_save(flags); b4816afa398670 David Howells 2012-03-28 58 ret = *(volatile u32 *)ptr; b4816afa398670 David Howells 2012-03-28 59 *(volatile u32 *)ptr = x; b4816afa398670 David Howells 2012-03-28 60 local_irq_restore(flags); b4816afa398670 David Howells 2012-03-28 61 return ret; b4816afa398670 David Howells 2012-03-28 62 #endif /* __xchg_u32 */ b4816afa398670 David Howells 2012-03-28 63 :::::: The code at line 37 was first introduced by commit :::::: b4816afa3986704d1404fc48e931da5135820472 Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h :::::: TO: David Howells :::::: CC: David Howells --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org