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 X-Spam-Level: X-Spam-Status: No, score=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8853CC4363A for ; Fri, 23 Oct 2020 15:13:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4863221D47 for ; Fri, 23 Oct 2020 15:13:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S465630AbgJWPNc (ORCPT ); Fri, 23 Oct 2020 11:13:32 -0400 Received: from mx2.suse.de ([195.135.220.15]:54962 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S465622AbgJWPNb (ORCPT ); Fri, 23 Oct 2020 11:13:31 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 9C90AB945; Fri, 23 Oct 2020 15:13:29 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 250871E1348; Fri, 23 Oct 2020 17:13:29 +0200 (CEST) Date: Fri, 23 Oct 2020 17:13:29 +0200 From: Jan Kara To: kernel test robot Cc: Amir Goldstein , Jan Kara , LKML , lkp@lists.01.org, Josh Poimboeuf , Peter Zijlstra , Thomas Gleixner Subject: Re: [fsnotify] 9b93f33105: WARNING:missing_R10_value_at__fsnotify_parent/0x Message-ID: <20201023151329.GA9119@quack2.suse.cz> References: <20201023003842.GC31092@shao2-debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201023003842.GC31092@shao2-debian> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, On Fri 23-10-20 08:38:42, kernel test robot wrote: > Greeting, > > FYI, we noticed the following commit (built with gcc-9): > > commit: 9b93f33105f5f9bd3d016ff870eb6000c9d89eff ("fsnotify: send event with parent/name info to sb/mount/non-dir marks") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > > in testcase: will-it-scale > version: will-it-scale-x86_64-b695a1b-1_20201007 > with following parameters: > > nr_task: 192 > mode: process > test: read2 > cpufreq_governor: performance > ucode: 0x11 > ... > [ 117.801209] perf version 5.9.rc8.gc85fb28b6f99 > [ 117.801219] > [ 182.458747] perf: interrupt took too long (2668 > 2500),perf: interrupt took too long (4516 > 4352), lowering kernel.perf_event_max_sample_rate to 44000 > lowering kernel.perf_event_max_sample_rperf: interrupt took too long (5950 > 5645), lowering kernel.perf_event_max_sample_rate to 33000 > ate to 74000 > perf: interrupt took too long (7658 > 7437), lowering kernel.perf_event_max_sample_rate to 26000 > [ 182.502968] perf: interrupt took too long (7658 > 7437), lowering kernel.perf_event_max_sample_rate to 26000 > [ 182.525840] perf: interrupt took too long (9889 > 9572), lowering kernel.perf_event_max_sample_rate to 20000 > f_event_max_sample_rate to 12000 > [ 182.560905] perf: interrupt took too long (21827 > 20585), lowering kernel.perf_event_max_sample_rate to 9000 > [ 182.609949] perf: interrupt took too long (30149 > 27283), lowering kernel.perf_event_max_sample_rate to 6000 > [ 182.622872] perf: interrupt took too long (38986 > 37686), lowering kernel.perf_event_max_sample_rate to 5000 > [ 182.672850] perf: interrupt took too long (50874 > 48732), lowering kernel.perf_event_max_sample_rate to 3000 > [ 182.732849] perf: interrupt took too long (63885 > 63592), lowering kernel.perf_event_max_sample_rate to 3000 > [ 182.751847] perf: interrupt took too long (80901 > 79856), lowering kernel.perf_event_max_sample_rate to 2000 > [ 188.527603] WARNING: missing R10 value at __fsnotify_parent+0x25/0x280 OK, that's an unwinder warning but we don't do anything special in __fsnotify_parent(). Let's CC x86 guys if they have idea what's going on. Honza -- Jan Kara SUSE Labs, CR