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=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 721B4C433FE for ; Thu, 10 Dec 2020 13:06:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EB0523D39 for ; Thu, 10 Dec 2020 13:06:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387745AbgLJNGB (ORCPT ); Thu, 10 Dec 2020 08:06:01 -0500 Received: from mail.kernel.org ([198.145.29.99]:53030 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388969AbgLJNFm (ORCPT ); Thu, 10 Dec 2020 08:05:42 -0500 Date: Thu, 10 Dec 2020 14:04:58 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1607605501; bh=QfxBs6xsDWifop4pj9KY8wDcPJ8Vl6EbUNEX5HTK6bI=; h=From:To:Cc:Subject:References:In-Reply-To:From; b=jFbo3DNwNSuIHvkJWsBp2iv6118FOBvK79DyXB/4nofo5MYf4QJCcYOzFDsmjBHv2 qf4xo4QuMGH8QLMvDI9P5mC8zYHIHwJw9KBt91sE+aGlqX3L+mCo50t/AiKy0+KJGv qQSaWX1byGHGZd+UDoMvSE4w2KVG4Mj7VwghnAMDDR0b3itZuOlMrP26/fL1nH4xZA OCJz2D2QAr9pJyRRmCklm5EH76mUv79iahraiYU7pIUYfIHahd2Vn/aNA+kd4idVa5 3PHfiNMxgU0ucAnrgZmAhPAYUFo1pwY/mv46Nnu8NCCJAjBzt403q7yY6Djtz4ULpr cabN6W788P+1w== From: Frederic Weisbecker To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org Subject: Re: NOHZ tick-stop error: Non-RCU local softirq work is pending Message-ID: <20201210130458.GA150462@lothringen> References: <20201118175218.GA16039@paulmck-ThinkPad-P72> <20201118175420.GA17381@paulmck-ThinkPad-P72> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201118175420.GA17381@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Nov 18, 2020 at 09:54:20AM -0800, Paul E. McKenney wrote: > On Wed, Nov 18, 2020 at 09:52:18AM -0800, Paul E. McKenney wrote: > > Hello, Frederic, > > > > Here is the last few months' pile of warnings from rcutorture runs. > > And this time with scenario names. ;-) > > Thanx, Paul > > ------------------------------------------------------------------------ > > ./2020.11.02-12.05.02/TREE02/console.log:[ 255.098527] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #282!!! > ./2020.09.01-17.20.03/LOCK05.3/console.log:[ 414.534548] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.01-17.20.03/LOCK05.3/console.log:[ 3798.654736] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.01-17.20.03/LOCK05.2/console.log:[ 1718.589367] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.01-17.20.03/LOCK05.2/console.log:[ 6632.777655] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.10.29-16.54.07/SRCU-P/console.log:[ 2873.688490] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.11.02-17.25.58/TREE05/console.log:[ 3081.738937] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.11.04-19.46.51/SRCU-N/console.log:[ 2673.597523] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.02-17.17.02/LOCK05.3/console.log:[ 1467.372887] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.02-17.17.02/LOCK05/console.log:[ 34.371094] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.02-17.17.02/LOCK05/console.log:[ 1147.260097] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.11.14-16.00.39/SRCU-P/console.log:[ 5066.699589] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.10.12-21.08.28/SRCU-P/console.log:[ 816.338843] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.02-15.27.04/LOCK05/console.log:[ 34.338836] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.10-02.28.14/TREE01/console.log:[ 1234.111394] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE01/console.log:[ 1282.109415] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE07/console.log:[ 239.215890] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE07/console.log:[ 367.918969] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/TREE07/console.log:[ 1461.037894] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.10-02.28.14/TREE07/console.log:[ 1503.810903] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE07/console.log:[ 1503.811939] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TRACE01/console.log:[ 699.514824] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/SRCU-P/console.log:[ 751.681629] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE02/console.log:[ 287.770126] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/TREE02/console.log:[ 287.771096] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/TREE05/console.log:[ 648.009370] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.09.10-02.28.14/TREE05/console.log:[ 924.733405] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/TREE05/console.log:[ 924.734011] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.09.10-02.28.14/TREE05/console.log:[ 1743.197353] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #02!!! > ./2020.09.10-02.28.14/TREE04/console.log:[ 1528.161635] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.10-02.28.14/TREE04/console.log:[ 1528.162313] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.10.30-11.47.17/TREE08/console.log:[ 265.201513] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.10.30-11.47.17/TREE08/console.log:[ 473.137587] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #202!!! > ./2020.11.05-11.47.22/TREE08/console.log:[ 187.375426] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! > ./2020.09.02-16.20.12/LOCK05/console.log:[ 1361.544451] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! > ./2020.11.06-17.37.06/TREE05/console.log:[ 79.519727] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #280!!! I'm having a hard time reproducing this. After trying a batch of 10 TREE05, I'm trying now with 10 SRCU-P, let's see how it goes. Thanks.