From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755235AbbLVQjl (ORCPT ); Tue, 22 Dec 2015 11:39:41 -0500 Received: from smtp4-g21.free.fr ([212.27.42.4]:22137 "EHLO smtp4-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753361AbbLVQjj (ORCPT ); Tue, 22 Dec 2015 11:39:39 -0500 Date: Tue, 22 Dec 2015 17:39:33 +0100 From: Guillaume Morin To: Jason Baron Cc: Greg KH , 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 Subject: Re: Linux 3.14.58 Message-ID: <20151222163933.GA20860@bender.morinfr.org> Mail-Followup-To: Jason Baron , Greg KH , 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 References: <20151209201504.GA11096@kroah.com> <56797413.3090904@akamai.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56797413.3090904@akamai.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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... -- Guillaume Morin