Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753930AbdHOB2H (ORCPT ); Mon, 14 Aug 2017 21:28:07 -0400 Received: from mail-oi0-f67.google.com ([209.85.218.67]:37467 "EHLO mail-oi0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753008AbdHOB2D (ORCPT ); Mon, 14 Aug 2017 21:28:03 -0400 MIME-Version: 1.0 In-Reply-To: <37D7C6CF3E00A74B8858931C1DB2F07753784A2B@SHSMSX103.ccr.corp.intel.com> References: <20170621144118.5939-1-kan.liang@intel.com> <20170622154450.2lua7fdmigcixldw@redhat.com> <20170623162907.l6inpxgztwwkeaoi@redhat.com> <20170626201927.3ak7fk3yvdzbb4ay@redhat.com> <20170627201249.ll34ecwhpme3vh2u@redhat.com> <37D7C6CF3E00A74B8858931C1DB2F0775371D43E@SHSMSX103.ccr.corp.intel.com> <20170717144637.34umykrccvjma3fl@redhat.com> <37D7C6CF3E00A74B8858931C1DB2F07753784A2B@SHSMSX103.ccr.corp.intel.com> From: Linus Torvalds Date: Mon, 14 Aug 2017 18:28:01 -0700 X-Google-Sender-Auth: iO3Lsv9RsGYRcP7sPSKOEGrd5aU Message-ID: Subject: Re: [PATCH V2] kernel/watchdog: fix spurious hard lockups To: "Liang, Kan" Cc: Don Zickus , Thomas Gleixner , "linux-kernel@vger.kernel.org" , "mingo@kernel.org" , "akpm@linux-foundation.org" , "babu.moger@oracle.com" , "atomlin@redhat.com" , "prarit@redhat.com" , "peterz@infradead.org" , "eranian@google.com" , "acme@redhat.com" , "ak@linux.intel.com" , "stable@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 469 Lines: 17 On Mon, Aug 14, 2017 at 6:16 PM, Liang, Kan wrote: > > We have confirmed that the hardlock with "speed up the hrtimer" patch is > actually another issue. Good. However: > Tim has already proposed a patch to fix it. > Here is his patch. https://lkml.org/lkml/2017/8/14/1000 Ugh. I hate that patch, and hope we can find a proper fix for it. But I'll respond separately to it, and it's independent of the watchdog issue. Linus