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 D9BF4C19F2A for ; Sun, 7 Aug 2022 06:34:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232673AbiHGGe2 (ORCPT ); Sun, 7 Aug 2022 02:34:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229503AbiHGGe0 (ORCPT ); Sun, 7 Aug 2022 02:34:26 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 87A20959F for ; Sat, 6 Aug 2022 23:34:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659854065; x=1691390065; h=date:from:to:cc:subject:message-id:mime-version; bh=Ccu78lD+IzvBx6GoQ3n0/nxcbH1B8brsl6rDIlinm4A=; b=k0LtzMZR1xuDGh5EvzndNJe0sa8/0XvaPQTfYPkM9CMDGAXcE1esn40b IK2fd2VF4yDGsOdpt8wUBNL3a0hSuO1UHWS9p5mkRgq4JkcNuXyIdl+rk 2BoeP5fPuBJQf7jZRJwGf9Xv4W01aQK39qecoZFBrtJHLJd5PnD9X98KJ 0t9kCkgkrd4gBYMHkehRuwEa4zanxgnNcY1sm6wyfxr9XlxaDuY/mtlOu GLqvSkZPYmTykR5y6VzcGtrEiJGeg306/fC9Q3tIl+F7T3jidqyoqtUzw 7ay8M3QYXULzEeMYgwJ7TutUMnJyeSDu1VQRbm+tKfrk0/xCZfogluKjF w==; X-IronPort-AV: E=McAfee;i="6400,9594,10431"; a="287979054" X-IronPort-AV: E=Sophos;i="5.93,219,1654585200"; d="scan'208";a="287979054" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Aug 2022 23:34:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,219,1654585200"; d="scan'208";a="632486108" Received: from lkp-server01.sh.intel.com (HELO e0eace57cfef) ([10.239.97.150]) by orsmga008.jf.intel.com with ESMTP; 06 Aug 2022 23:34:23 -0700 Received: from kbuild by e0eace57cfef with local (Exim 4.96) (envelope-from ) id 1oKZrj-000L3p-0G; Sun, 07 Aug 2022 06:34:23 +0000 Date: Sun, 7 Aug 2022 14:34:13 +0800 From: kernel test robot To: Chris Down Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Petr Mladek Subject: arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer Message-ID: <202208071455.JpZGTtus-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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: 1612c382ffbdf1f673caec76502b1c00e6d35363 commit: 337015573718b161891a3473d25f59273f2e626b printk: Userspace format indexing support date: 1 year, 1 month ago config: parisc-randconfig-s052-20220805 (https://download.01.org/0day-ci/archive/20220807/202208071455.JpZGTtus-lkp@intel.com/config) compiler: hppa64-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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=337015573718b161891a3473d25f59273f2e626b git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 337015573718b161891a3473d25f59273f2e626b # 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=parisc SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer >> arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer >> arch/parisc/math-emu/driver.c:88:17: sparse: sparse: Using plain integer as NULL pointer arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer arch/parisc/math-emu/driver.c:90:17: sparse: sparse: Using plain integer as NULL pointer arch/parisc/math-emu/driver.c:93:22: sparse: sparse: undefined identifier 'decode_fpu' vim +88 arch/parisc/math-emu/driver.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 64 ^1da177e4c3f41 Linus Torvalds 2005-04-16 65 /* Handle a floating point exception. Return zero if the faulting ^1da177e4c3f41 Linus Torvalds 2005-04-16 66 instruction can be completed successfully. */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 67 int ^1da177e4c3f41 Linus Torvalds 2005-04-16 68 handle_fpe(struct pt_regs *regs) ^1da177e4c3f41 Linus Torvalds 2005-04-16 69 { ^1da177e4c3f41 Linus Torvalds 2005-04-16 70 extern void printbinary(unsigned long x, int nbits); ^1da177e4c3f41 Linus Torvalds 2005-04-16 71 unsigned int orig_sw, sw; ^1da177e4c3f41 Linus Torvalds 2005-04-16 72 int signalcode; ^1da177e4c3f41 Linus Torvalds 2005-04-16 73 /* need an intermediate copy of float regs because FPU emulation ^1da177e4c3f41 Linus Torvalds 2005-04-16 74 * code expects an artificial last entry which contains zero ^1da177e4c3f41 Linus Torvalds 2005-04-16 75 * ^1da177e4c3f41 Linus Torvalds 2005-04-16 76 * also, the passed in fr registers contain one word that defines ^1da177e4c3f41 Linus Torvalds 2005-04-16 77 * the fpu type. the fpu type information is constructed ^1da177e4c3f41 Linus Torvalds 2005-04-16 78 * inside the emulation code ^1da177e4c3f41 Linus Torvalds 2005-04-16 79 */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 80 __u64 frcopy[36]; ^1da177e4c3f41 Linus Torvalds 2005-04-16 81 ^1da177e4c3f41 Linus Torvalds 2005-04-16 82 memcpy(frcopy, regs->fr, sizeof regs->fr); ^1da177e4c3f41 Linus Torvalds 2005-04-16 83 frcopy[32] = 0; ^1da177e4c3f41 Linus Torvalds 2005-04-16 84 ^1da177e4c3f41 Linus Torvalds 2005-04-16 85 memcpy(&orig_sw, frcopy, sizeof(orig_sw)); ^1da177e4c3f41 Linus Torvalds 2005-04-16 86 ^1da177e4c3f41 Linus Torvalds 2005-04-16 87 if (FPUDEBUG) { ^1da177e4c3f41 Linus Torvalds 2005-04-16 @88 printk(KERN_DEBUG "FP VZOUICxxxxCQCQCQCQCQCRMxxTDVZOUI ->\n "); :::::: The code at line 88 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://01.org/lkp