From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out4-smtp.messagingengine.com ([66.111.4.28]:60865 "EHLO out4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753778AbcJDHsR (ORCPT ); Tue, 4 Oct 2016 03:48:17 -0400 Date: Tue, 4 Oct 2016 09:18:22 +0200 From: Greg KH To: Steven Schlansker Cc: "stable@vger.kernel.org" Subject: Re: Request backport of 'ipv6: addrconf: fix dev refcont leak when DAD failed ' to linux-4.4.y Message-ID: <20161004071822.GB10989@kroah.com> References: <791D97FF-8539-4A6A-9B12-6A2AC25EDE37@opentable.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <791D97FF-8539-4A6A-9B12-6A2AC25EDE37@opentable.com> Sender: stable-owner@vger.kernel.org List-ID: On Mon, Oct 03, 2016 at 07:27:35PM +0000, Steven Schlansker wrote: > Hi linux-stable, > > This is a request to backport > > 751eb6b6 ipv6: addrconf: fix dev refcont leak when DAD failed > https://github.com/torvalds/linux/commit/751eb6b6042a596b0080967c1a529a9fe98dac1d > > to linux-stable 4.4.y branch. > It has already been applied to stable master, and 4.7.y, but not longterm 4.4.y > > We often (1+/week) run into hosts hanging with errors like > > [1637669.684652] unregister_netdevice: waiting for veth26dc718 to become free. Usage count = 1 > [1637679.864366] unregister_netdevice: waiting for veth26dc718 to become free. Usage count = 1 > > and have been told that this patch likely fixes the problem. It's already in the 4.4.22 stable release, are you not already using that release? confused, greg k-h