From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753615AbcAWQNg (ORCPT ); Sat, 23 Jan 2016 11:13:36 -0500 Received: from www.linutronix.de ([62.245.132.108]:50099 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753430AbcAWQNE (ORCPT ); Sat, 23 Jan 2016 11:13:04 -0500 Date: Sat, 23 Jan 2016 17:11:54 +0100 (CET) From: Thomas Gleixner To: Ben Hutchings cc: Tejun Heo , Sasha Levin , Jan Kara , Shaohua Li , LKML , stable@vger.kernel.org, Daniel Bilik Subject: Re: Crashes with 874bbfe600a6 in 3.18.25 In-Reply-To: <1453515623.3734.156.camel@decadent.org.uk> Message-ID: References: <20160120211926.GJ10810@quack.suse.cz> <20160120213901.GA755895@devbig084.prn1.facebook.com> <20160121095234.GN10810@quack.suse.cz> <56A1817C.10300@oracle.com> <20160122160903.GH32380@htj.duckdns.org> <1453515623.3734.156.camel@decadent.org.uk> User-Agent: Alpine 2.11 (DEB 23 2013-08-11) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="8323329-36650221-1453565516=:3886" 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-36650221-1453565516=:3886 Content-Type: TEXT/PLAIN; charset=UTF-8 Content-Transfer-Encoding: 8BIT On Sat, 23 Jan 2016, Ben Hutchings wrote: > On Fri, 2016-01-22 at 11:09 -0500, Tejun Heo wrote: > > > Looks like it requires more than trivial backport (I think). Tejun? > > > > The timer migration has changed quite a bit.  Given that we've never > > seen vmstat work crashing in 3.18 era, I wonder whether the right > > thing to do here is reverting 874bbfe600a6 from 3.18 stable? > > It's not just 3.18 that has this; 874bbfe600a6 was backported to all > stable branches from 3.10 onward.  Only the 4.2-ckt branch has > 22b886dd10180939. 22b886dd10180939 fixes a bug which was introduced with the timer wheel overhaul in 4.2. So only 4.2/3 should have it backported. Thanks, tglx --8323329-36650221-1453565516=:3886--