Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp595111ybb; Fri, 20 Mar 2020 04:51:37 -0700 (PDT) X-Google-Smtp-Source: ADFU+vtWJIQ5hmhohdRIihHGsCNPppAAiihvFmxuER49G7/BI1v0vZR65hCdrVCBnDQ/kbfCKQeY X-Received: by 2002:aca:af93:: with SMTP id y141mr5819756oie.144.1584705097817; Fri, 20 Mar 2020 04:51:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1584705097; cv=none; d=google.com; s=arc-20160816; b=drsMzKdlGFPG0YauHr4vdwSTND1cavt7zMfjGl9FfrSYZaJutd+Qmu6SPERe34K36l bneJ7ollGwbcePck7lA1B7SwgtNurZIMMHt2VGTR9z3oPbNnG0+QjzLK5UJxREX9CpOW RnQZo9J+uuLIXiX+g+Tu6BGUYxfTmp+sH6ivCltuXaafGtApN0OYyPaIW1zoxFwia9B8 jrELefP70dG/jeNuxmTVxIsUzmbo43dpuXlzZnogDz1vS4RNLqwbCgzJ4uL7EIIc+hgi UyvS+7BE38KWnBX+ka7VpxDQY6pcw1RfJx3FvT4mKkE0g+vpxE/N1vmdxIYkbChGqf7T y5ug== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:message-id:date:references :in-reply-to:subject:cc:to:from; bh=bfzDvnS6pNd0P9YWL6LUn1enX4qqB11PcWPobaI8Bq4=; b=VKVwtnrbVRYH/eSNmm+rSI2OEaa3yMNURUjr+9AyJ1d0LC5YNxhMy7Oif7IxWFsmJa aP3P2iRdAcqB9QoG79149nA0oejG6OMUDwNTBe3oBwnNab4bzh80vyF14JmmpBl33F+0 grI7KdiiFlw5EVzsPgN1qqIshO1k0Pd7fK5PUvMW+FuCQW6/MBNMwBoqAX6J7lAjsh0p u2NJVcwAjjGHU0rhBQHSNTz80F+MK4w7XTiJHu9fEhrox3i+Xagh0x39/1HbrVUpehNX vE5OBwMzDhuDXZj+RZMZeKBzxWNem7wu8tbJ9i4wYYCotOxa0ck0CaKWMkJtdYWpJA3t 0LXQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id w16si3038541otl.217.2020.03.20.04.51.24; Fri, 20 Mar 2020 04:51:37 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727039AbgCTLuX (ORCPT + 99 others); Fri, 20 Mar 2020 07:50:23 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:35428 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbgCTLuW (ORCPT ); Fri, 20 Mar 2020 07:50:22 -0400 Received: from p5de0bf0b.dip0.t-ipconnect.de ([93.224.191.11] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1jFGAH-0002xt-1n; Fri, 20 Mar 2020 12:50:13 +0100 Received: by nanos.tec.linutronix.de (Postfix, from userid 1000) id 8A7CA100375; Fri, 20 Mar 2020 12:50:12 +0100 (CET) From: Thomas Gleixner To: Stephen Rothwell , Waiman Long Cc: Qian Cai , "Joel Fernandes \(Google\)" , "Paul E. McKenney" , rcu@vger.kernel.org, LKML , Peter Zijlstra , Will Deacon , Ingo Molnar , Frederic Weisbecker Subject: Re: Hard lockups due to "tick/common: Make tick_periodic() check for missing ticks" In-Reply-To: <20200320130017.6457a1e8@canb.auug.org.au> References: <11BEA1A5-2E93-4E01-A05C-A6BA73A74CEB@lca.pw> <218eed57-27c8-12c0-6f5f-111874798c21@redhat.com> <20200320130017.6457a1e8@canb.auug.org.au> Date: Fri, 20 Mar 2020 12:50:12 +0100 Message-ID: <87zhcb2qkr.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Stephen Rothwell writes: Thu, 19 Mar 2020 15:00:35 -0400 Waiman Long wrote: >> I am fine for reverting the patch for now. I am still having some >> trouble reproducing it and I have other tasks to work on right now. I >> will get to the bottom of it and resubmit a new patch later on. > > I have reverted that commit from linux-next today. I did the same in the tip tree.