From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752059AbaLCU5i (ORCPT ); Wed, 3 Dec 2014 15:57:38 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:12823 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751275AbaLCU5h (ORCPT ); Wed, 3 Dec 2014 15:57:37 -0500 Date: Wed, 3 Dec 2014 15:56:58 -0500 From: Chris Mason Subject: Re: frequent lockups in 3.18rc4 To: Dave Jones CC: Linus Torvalds , Mike Galbraith , Ingo Molnar , Peter Zijlstra , =?iso-8859-1?q?D=E2niel?= Fraga , Sasha Levin , "Paul E. McKenney" , Linux Kernel Mailing List Message-ID: <1417640218.11261.2@mail.thefacebook.com> In-Reply-To: <20141203201112.GB3118@redhat.com> References: <547ccf74.a5198c0a.25de.26d9@mx.google.com> <20141201230339.GA20487@ret.masoncoding.com> <1417529606.3924.26.camel@maggy.simpson.net> <1417540493.21136.3@mail.thefacebook.com> <20141203184111.GA32005@redhat.com> <20141203190045.GB32005@redhat.com> <1417636798.11261.1@mail.thefacebook.com> <20141203201112.GB3118@redhat.com> X-Mailer: geary/0.8.2 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed X-Originating-IP: [192.168.16.4] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.13.68,1.0.33,0.0.0000 definitions=2014-12-03_08:2014-12-03,2014-12-03,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 kscore.is_bulkscore=0 kscore.compositescore=0 circleOfTrustscore=104.155259362634 compositescore=0.182402046397986 urlsuspect_oldscore=0.182402046397986 suspectscore=0 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=1996008 rbsscore=0.182402046397986 spamscore=0 recipient_to_sender_domain_totalscore=7 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1412030185 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Dec 3, 2014 at 3:11 PM, Dave Jones wrote: > On Wed, Dec 03, 2014 at 02:59:58PM -0500, Chris Mason wrote: > > > You've also mentioned a few times where messages stopped hitting > the > > console? > > > > commit 5874af2003b1aaaa053128d655710140e3187226 > > Author: Jan Kara > > Date: Wed Aug 6 16:09:10 2014 -0700 > > > > printk: enable interrupts before calling > > console_trylock_for_printk() > > Hmm.. Jan Kara has been talking about printk deadlocks for some time. I wouldn't have expected it to get worse since 3.16, but we do have a few printk cleanups and fixes in there. -chris