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 404BAE7D0A6 for ; Thu, 21 Sep 2023 20:00:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231195AbjIUUAh (ORCPT ); Thu, 21 Sep 2023 16:00:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229619AbjIUUAB (ORCPT ); Thu, 21 Sep 2023 16:00:01 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35E545AA99 for ; Thu, 21 Sep 2023 10:29:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695317353; x=1726853353; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=uzDkfWXeowTfu3zdB2+xHFSe333dlATcO9CRMMxZdao=; b=XiQgDmBV4sSA3VCGkDrTzNwDhL7ywVHpxHY4aSRZMKpDhPHyQs3/ZgRT ZGm3V/LMyTtgx3OGP/FnhZ6OfsTm0+BioUJ40GJXYOKIgNlZ218KRt2ZF rMOhRItLcDA9Oyc6tLTkOj/p8XuagabTfZyGIMGPatVV/9ibjC5X+lcXz kZ/+Pf4NyGCip8qyQgyFJnyQ3f2T0hx6zp7p1nH/Suz0OcfwZeeWQplGo dofoqki37R2qVm2FkO/hBT9OQzflC3ld2SJ6kj7Vm7eK2aW+IrytCPPq3 SRCvus6233MVUt0wqJkHwZQFc5cPjpNxw0P/Elf6izmpEGfxo6YG8cVFk g==; X-IronPort-AV: E=McAfee;i="6600,9927,10840"; a="411497381" X-IronPort-AV: E=Sophos;i="6.03,165,1694761200"; d="scan'208";a="411497381" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2023 08:36:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10840"; a="862522382" X-IronPort-AV: E=Sophos;i="6.03,165,1694761200"; d="scan'208";a="862522382" Received: from smile.fi.intel.com ([10.237.72.54]) by fmsmga002.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Sep 2023 08:36:41 -0700 Received: from andy by smile.fi.intel.com with local (Exim 4.97-RC0) (envelope-from ) id 1qjLjK-0000000Gwxq-22aH; Thu, 21 Sep 2023 18:36:38 +0300 Date: Thu, 21 Sep 2023 18:36:38 +0300 From: Andy Shevchenko To: kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, Luis Chamberlain Subject: Re: [PATCH v1 1/6] params: Use sysfs_emit() to instead of scnprintf() Message-ID: References: <20230912150551.401537-1-andriy.shevchenko@linux.intel.com> <202309211632.67e4c1e0-oliver.sang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202309211632.67e4c1e0-oliver.sang@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 21, 2023 at 09:34:13PM +0800, kernel test robot wrote: > > Hello, > > kernel test robot noticed "WARNING:at_fs/sysfs/file.c:#sysfs_emit" on: > > commit: d4004295e5502a1eb3e361e97ea4dd1686046af6 ("[PATCH v1 1/6] params: Use sysfs_emit() to instead of scnprintf()") > url: https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/params-Introduce-the-param_unknown_fn-type/20230912-231033 > base: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git 0bb80ecc33a8fb5a682236443c1e740d5c917d1d > patch link: https://lore.kernel.org/all/20230912150551.401537-1-andriy.shevchenko@linux.intel.com/ > patch subject: [PATCH v1 1/6] params: Use sysfs_emit() to instead of scnprintf() > > in testcase: trinity > version: trinity-i386-abe9de86-1_20230429 > with following parameters: > > runtime: 300s > group: group-04 > nr_groups: 5 > what we observed is this issue doesn't always happen. we run the test upon > this commit almost 500 times, it happened 42 times. > however, the parent keeps clean. > > v6.6-rc1 d4004295e5502a1eb3e361e97ea > ---------------- --------------------------- > fail:runs %reproduction fail:runs > | | | > :497 8% 42:496 dmesg.EIP:sysfs_emit > :497 8% 42:496 dmesg.WARNING:at_fs/sysfs/file.c:#sysfs_emit Cool! I will check this, thank you for the report. -- With Best Regards, Andy Shevchenko