From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:45022 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751278AbdC0QhA (ORCPT ); Mon, 27 Mar 2017 12:37:00 -0400 Subject: Patch "net: vrf: Reset rt6i_idev in local dst after put" has been added to the 4.10-stable tree To: dsa@cumulusnetworks.com, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 27 Mar 2017 18:19:32 +0200 Message-ID: <149063157223563@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled net: vrf: Reset rt6i_idev in local dst after put to the 4.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: net-vrf-reset-rt6i_idev-in-local-dst-after-put.patch and it can be found in the queue-4.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Mon Mar 27 18:18:08 CEST 2017 From: David Ahern Date: Fri, 17 Mar 2017 16:07:11 -0700 Subject: net: vrf: Reset rt6i_idev in local dst after put From: David Ahern [ Upstream commit 3dc857f0e8fc22610a59cbb346ba62c6e921863f ] The VRF driver takes a reference to the inet6_dev on the VRF device for its rt6_local dst when handling local traffic through the VRF device as a loopback. When the device is deleted the driver does a put on the idev but does not reset rt6i_idev in the rt6_info struct. When the dst is destroyed, dst_destroy calls ip6_dst_destroy which does a second put for what is essentially the same reference causing it to be prematurely freed. Reset rt6i_idev after the put in the vrf driver. Fixes: b4869aa2f881e ("net: vrf: ipv6 support for local traffic to local addresses") Signed-off-by: David Ahern Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/vrf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/net/vrf.c +++ b/drivers/net/vrf.c @@ -462,8 +462,10 @@ static void vrf_rt6_release(struct net_d } if (rt6_local) { - if (rt6_local->rt6i_idev) + if (rt6_local->rt6i_idev) { in6_dev_put(rt6_local->rt6i_idev); + rt6_local->rt6i_idev = NULL; + } dst = &rt6_local->dst; dev_put(dst->dev); Patches currently in stable-queue which might be from dsa@cumulusnetworks.com are queue-4.10/net-vrf-reset-rt6i_idev-in-local-dst-after-put.patch