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27 Mar 2022 08:14:11 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.90,215,1643702400"; d="scan'208";a="617553158" Received: from lkp-server02.sh.intel.com (HELO 89b41b6ae01c) ([10.239.97.151]) by fmsmga004.fm.intel.com with ESMTP; 27 Mar 2022 08:14:09 -0700 Received: from kbuild by 89b41b6ae01c with local (Exim 4.92) (envelope-from ) id 1nYUan-00019Q-86; Sun, 27 Mar 2022 15:14:09 +0000 Date: Sun, 27 Mar 2022 23:13:57 +0800 From: kernel test robot To: Andrey Konovalov Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Andrew Morton , Linux Memory Management List Subject: mm/kasan/shadow.c:496:15: sparse: sparse: restricted kasan_vmalloc_flags_t degrades to integer Message-ID: <202203272343.oME5HaYV-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) X-Rspam-User: Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=intel.com header.s=Intel header.b="mukDw/G7"; spf=none (imf04.hostedemail.com: domain of lkp@intel.com has no SPF policy when checking 134.134.136.31) smtp.mailfrom=lkp@intel.com; dmarc=pass (policy=none) header.from=intel.com X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 4A23B4002F X-Stat-Signature: aakoa8n8n13a1iipha9f5yymfzcrka3x X-HE-Tag: 1648394053-355660 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f022814633e1c600507b3a99691b4d624c2813f0 commit: f6e39794f4b6da7ca9b77f2f9ad11fd6f0ac83e5 kasan, vmalloc: only tag normal vmalloc allocations date: 3 days ago config: s390-randconfig-s031-20220327 (https://download.01.org/0day-ci/archive/20220327/202203272343.oME5HaYV-lkp@intel.com/config) compiler: s390-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=f6e39794f4b6da7ca9b77f2f9ad11fd6f0ac83e5 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout f6e39794f4b6da7ca9b77f2f9ad11fd6f0ac83e5 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash mm/kasan/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> mm/kasan/shadow.c:496:15: sparse: sparse: restricted kasan_vmalloc_flags_t degrades to integer vim +496 mm/kasan/shadow.c 477 478 void *__kasan_unpoison_vmalloc(const void *start, unsigned long size, 479 kasan_vmalloc_flags_t flags) 480 { 481 /* 482 * Software KASAN modes unpoison both VM_ALLOC and non-VM_ALLOC 483 * mappings, so the KASAN_VMALLOC_VM_ALLOC flag is ignored. 484 * Software KASAN modes can't optimize zeroing memory by combining it 485 * with setting memory tags, so the KASAN_VMALLOC_INIT flag is ignored. 486 */ 487 488 if (!is_vmalloc_or_module_addr(start)) 489 return (void *)start; 490 491 /* 492 * Don't tag executable memory with the tag-based mode. 493 * The kernel doesn't tolerate having the PC register tagged. 494 */ 495 if (IS_ENABLED(CONFIG_KASAN_SW_TAGS) && > 496 !(flags & KASAN_VMALLOC_PROT_NORMAL)) 497 return (void *)start; 498 499 start = set_tag(start, kasan_random_tag()); 500 kasan_unpoison(start, size, false); 501 return (void *)start; 502 } 503 -- 0-DAY CI Kernel Test Service https://01.org/lkp