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X-CSE-ConnectionGUID: 6D08i7s6QbKhcXJH1tAJLQ== X-CSE-MsgGUID: rVvWZ+EOTaCVa7UAoC5pOw== X-IronPort-AV: E=McAfee;i="6800,10657,11524"; a="68409222" X-IronPort-AV: E=Sophos;i="6.17,293,1747724400"; d="scan'208";a="68409222" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2025 17:14:34 -0700 X-CSE-ConnectionGUID: rPkKLnjSQ5CNumytd/zTcA== X-CSE-MsgGUID: Yli3IW/hTpGQPtHWPRWhLA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.17,293,1747724400"; d="scan'208";a="168250450" Received: from lkp-server02.sh.intel.com (HELO 4ea60e6ab079) ([10.239.97.151]) by fmviesa010.fm.intel.com with ESMTP; 17 Aug 2025 17:14:28 -0700 Received: from kbuild by 4ea60e6ab079 with local (Exim 4.96) (envelope-from ) id 1unnW6-000DnH-1M; Mon, 18 Aug 2025 00:14:26 +0000 Date: Mon, 18 Aug 2025 08:13:56 +0800 From: kernel test robot To: Yeoreum Yun , ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.com, dvyukov@google.com, vincenzo.frascino@arm.com, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, scott@os.amperecomputing.com, jhubbard@nvidia.com, pankaj.gupta@amd.com, leitao@debian.org, kaleshsingh@google.com, maz@kernel.org, broonie@kernel.org, oliver.upton@linux.dev, james.morse@arm.com, ardb@kernel.org, hardevsinh.palaniya@siliconsignals.io, david@redhat.com, yang@os.amperecomputing.com Cc: oe-kbuild-all@lists.linux.dev, kasan-dev@googlegroups.com, workflows@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, Yeoreum Yun Subject: Re: [PATCH v3 1/2] kasan/hw-tags: introduce kasan.write_only option Message-ID: <202508180747.PxkbPnyA-lkp@intel.com> References: <20250816110018.4055617-2-yeoreum.yun@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250816110018.4055617-2-yeoreum.yun@arm.com> X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: AD8DF180005 X-Stat-Signature: wcmgx34zr7k1sadgn3jgx8zgwqeu4jeq X-HE-Tag: 1755476076-426880 X-HE-Meta: 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 NJ9PZd/p 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 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: List-Subscribe: List-Unsubscribe: Hi Yeoreum, kernel test robot noticed the following build warnings: [auto build test WARNING on 8f5ae30d69d7543eee0d70083daf4de8fe15d585] url: https://github.com/intel-lab-lkp/linux/commits/Yeoreum-Yun/kasan-hw-tags-introduce-kasan-write_only-option/20250816-190300 base: 8f5ae30d69d7543eee0d70083daf4de8fe15d585 patch link: https://lore.kernel.org/r/20250816110018.4055617-2-yeoreum.yun%40arm.com patch subject: [PATCH v3 1/2] kasan/hw-tags: introduce kasan.write_only option config: arm64-randconfig-r053-20250818 (https://download.01.org/0day-ci/archive/20250818/202508180747.PxkbPnyA-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250818/202508180747.PxkbPnyA-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202508180747.PxkbPnyA-lkp@intel.com/ All warnings (new ones prefixed by >>): mm/kasan/hw_tags.c: In function 'kasan_enable_hw_tags': >> mm/kasan/hw_tags.c:433:21: warning: comparison between 'enum kasan_arg_mode' and 'enum kasan_arg_write_only' [-Wenum-compare] 433 | if (kasan_arg_mode == KASAN_ARG_WRITE_ONLY_ON && | ^~ mm/kasan/hw_tags.c:435:18: warning: comparison between 'enum kasan_arg_mode' and 'enum kasan_arg_write_only' [-Wenum-compare] 435 | kasan_arg_mode == KASAN_ARG_WRITE_ONLY_OFF; | ^~ >> mm/kasan/hw_tags.c:435:18: warning: statement with no effect [-Wunused-value] 435 | kasan_arg_mode == KASAN_ARG_WRITE_ONLY_OFF; | ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +433 mm/kasan/hw_tags.c 423 424 void kasan_enable_hw_tags(void) 425 { 426 if (kasan_arg_mode == KASAN_ARG_MODE_ASYNC) 427 hw_enable_tag_checks_async(); 428 else if (kasan_arg_mode == KASAN_ARG_MODE_ASYMM) 429 hw_enable_tag_checks_asymm(); 430 else 431 hw_enable_tag_checks_sync(); 432 > 433 if (kasan_arg_mode == KASAN_ARG_WRITE_ONLY_ON && 434 hw_enable_tag_checks_write_only()) { > 435 kasan_arg_mode == KASAN_ARG_WRITE_ONLY_OFF; 436 kasan_flag_write_only = false; 437 pr_warn_once("System doesn't support write-only option. Disable it\n"); 438 } 439 } 440 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki