From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933531AbbLVTaY (ORCPT ); Tue, 22 Dec 2015 14:30:24 -0500 Received: from prod-mail-xrelay05.akamai.com ([23.79.238.179]:27731 "EHLO prod-mail-xrelay05.akamai.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932172AbbLVTaU (ORCPT ); Tue, 22 Dec 2015 14:30:20 -0500 Subject: Re: Linux 3.14.58 To: Greg KH , guillaume@morinfr.org References: <20151209201504.GA11096@kroah.com> <56797413.3090904@akamai.com> <20151222163933.GA20860@bender.morinfr.org> Cc: linux-kernel@vger.kernel.org, Andrew Morton , torvalds@linux-foundation.org, stable@vger.kernel.org, lwn@lwn.net, Jiri Slaby , Al Viro , mika.westerberg@linux.intel.com From: Jason Baron Message-ID: <5679A4CA.6030207@akamai.com> Date: Tue, 22 Dec 2015 14:30:18 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <20151222163933.GA20860@bender.morinfr.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/22/2015 11:39 AM, Guillaume Morin wrote: > Jason, > > On 22 Dec 11:02, Jason Baron wrote: >> We've noticed livelocks in shrink_dentry_list() very similar to this >> report on stable 3.14.56: >> http://lkml.iu.edu/hypermail/linux/kernel/1405.3/00470.html >> >> It appears that the patches that introduced this issue came into 3.14.51 >> in August with the same set of patches mentioned in the referenced >> report. We unfortunately haven't narrowed down a reproducer, so I can't >> bisect the issue, but 3.14.50 did not appear to have the issue. >> >> Upstream merge commit - 6f6111e4a73d0f6370eb8be4f8e4523210b6a67d (Pull >> vfs dcache livelock fix from Al Viro) brought in a series to address >> this issue. So that may be needed here as well... > > FWIW I noticed the same thing. The commits listed in > http://www.spinics.net/lists/stable/msg111553.html fixed the problem for me. > > I assume Greg will pick them up soon... > Thanks for the info! -Jason