From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) (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 8CB461F5846 for ; Wed, 24 Sep 2025 16:15:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.8 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758730540; cv=none; b=tWXjzOt9+eHsRZcWElk7TmnbzltE3viGUMqqjQX0hhmVomzIA8dUwNocXiaXgrY+w3A6OxTfkQDNLYSpjas5TN1MhKyVTrZCqA5lf01sJOkroQz3u8QtMImMVXstEestHQ8Px0f8UY7RT+FAxGmacz+QMXKohid9mjqeBch8NXw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758730540; c=relaxed/simple; bh=bi4gRLMOEYQ2h/l3rwr1csS9TI2KAc73OlB0ZPRYjfM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=aS+vNnVIBYFTfUAwdzqA2rfcrShsrCC9nd6eaGckqpcQhQ5jLTwjYOhWmJHuamJs7TMdbwbLPXsccdwkQ86plarYRRq7y1Y0ybxRTc7mMHNpIL2/M987UuDubzY9Nh41QGbMckHsW3h14BPXG4+7/N3Lg9YI5UWtusIqs96bfCc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=d5c4IkFp; arc=none smtp.client-ip=192.198.163.8 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="d5c4IkFp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758730538; x=1790266538; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=bi4gRLMOEYQ2h/l3rwr1csS9TI2KAc73OlB0ZPRYjfM=; b=d5c4IkFpPHNaQH/WtNETNUn0Yd/EQ7xE1n5ZEJj//NgQUmegisgn+/tr Pbu1vYI44nYDKVXkf0GkuWaXzWu9KbfIhk/85DqlWZPIh1z9XKV4umoF+ tQoGgmvqjpwB93kL2RjTnEQAwdusfbxMcgwAXgZSyqTfX1hQdXPUaO8ML fJ+ehMftwHDNz4cxSX6U/JzEUsrIJUuoOs0xs8CZ3ewosXANTa/Y/Duig a7VbB0lyH1xG9QzijWxqTfRkk94VW/kaBqYs8kPMROKUX9HU0Ned+pqtf 41uC7gsYOJy4PG0du6BN/reDVV7tpnd2oGSUsF8Ox3fMrE/rgwZqHsgPr w==; X-CSE-ConnectionGUID: HxcC8hzfTFeuFfAlOPj8mA== X-CSE-MsgGUID: Nb84Q4hJQT2vzhXPnpI1Kw== X-IronPort-AV: E=McAfee;i="6800,10657,11563"; a="78669729" X-IronPort-AV: E=Sophos;i="6.18,290,1751266800"; d="scan'208";a="78669729" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2025 09:15:38 -0700 X-CSE-ConnectionGUID: 7oSlFp+vQROTlisSCNkmHw== X-CSE-MsgGUID: YSOfpJeeS32pzCuJ+OKt6g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,290,1751266800"; d="scan'208";a="176918617" Received: from lkp-server02.sh.intel.com (HELO 84c55410ccf6) ([10.239.97.151]) by orviesa007.jf.intel.com with ESMTP; 24 Sep 2025 09:15:36 -0700 Received: from kbuild by 84c55410ccf6 with local (Exim 4.96) (envelope-from ) id 1v1S9V-0004Jx-0A; Wed, 24 Sep 2025 16:15:33 +0000 Date: Thu, 25 Sep 2025 00:15:17 +0800 From: kernel test robot To: buckzhang1212@yeah.net, Ingo Molnar , Will Deacon , Boqun Feng , Waiman Long , linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, buckzhang1212@yeah.net Subject: Re: [PATCH] locking/mutex:add MUTEX_CHCEK_INIT to detect uninitialized mutex lock Message-ID: <202509242322.VggjpcD5-lkp@intel.com> References: <20250924022500.2577-1-buckzhang1212@yeah.net> Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250924022500.2577-1-buckzhang1212@yeah.net> Hi, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/locking/core] [also build test WARNING on linus/master v6.17-rc7 next-20250923] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/buckzhang1212-yeah-net/locking-mutex-add-MUTEX_CHCEK_INIT-to-detect-uninitialized-mutex-lock/20250924-103805 base: tip/locking/core patch link: https://lore.kernel.org/r/20250924022500.2577-1-buckzhang1212%40yeah.net patch subject: [PATCH] locking/mutex:add MUTEX_CHCEK_INIT to detect uninitialized mutex lock config: i386-randconfig-014-20250924 (https://download.01.org/0day-ci/archive/20250924/202509242322.VggjpcD5-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250924/202509242322.VggjpcD5-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/202509242322.VggjpcD5-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/locking/mutex.c:46:13: warning: 'mutex_check_waitlist' defined but not used [-Wunused-function] 46 | static void mutex_check_waitlist(struct mutex *lock) | ^~~~~~~~~~~~~~~~~~~~ vim +/mutex_check_waitlist +46 kernel/locking/mutex.c 39 40 #ifdef CONFIG_DEBUG_MUTEXES 41 # define MUTEX_WARN_ON(cond) DEBUG_LOCKS_WARN_ON(cond) 42 #else 43 # define MUTEX_WARN_ON(cond) 44 #endif 45 #define MUTEX_CHCEK_INIT(lock) mutex_check_waitlist(lock) > 46 static void mutex_check_waitlist(struct mutex *lock) 47 { 48 struct list_head *list = &lock->wait_list; 49 50 if ((unsigned long)list->next < PAGE_OFFSET) { 51 pr_err("BUG: mutex lock is uninitialized，wait_list is Error\n"); 52 MUTEX_WARN_ON("mutex lock is uninitialized"); 53 } 54 } 55 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki