From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36120 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752279AbdKOQ0Y (ORCPT ); Wed, 15 Nov 2017 11:26:24 -0500 Subject: Patch "l2tp: hold tunnel in pppol2tp_connect()" has been added to the 4.13-stable tree To: g.nault@alphalink.fr, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Wed, 15 Nov 2017 17:26:06 +0100 Message-ID: <1510763166229118@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 l2tp: hold tunnel in pppol2tp_connect() to the 4.13-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: l2tp-hold-tunnel-in-pppol2tp_connect.patch and it can be found in the queue-4.13 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Wed Nov 15 17:25:34 CET 2017 From: Guillaume Nault Date: Mon, 30 Oct 2017 17:58:58 +0100 Subject: l2tp: hold tunnel in pppol2tp_connect() From: Guillaume Nault [ Upstream commit f9e56baf03f9d36043a78f16e3e8b2cfd211e09e ] Use l2tp_tunnel_get() in pppol2tp_connect() to ensure the tunnel isn't going to disappear while processing the rest of the function. Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts") Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/l2tp/l2tp_ppp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -584,6 +584,7 @@ static int pppol2tp_connect(struct socke u32 tunnel_id, peer_tunnel_id; u32 session_id, peer_session_id; bool drop_refcnt = false; + bool drop_tunnel = false; int ver = 2; int fd; @@ -652,7 +653,9 @@ static int pppol2tp_connect(struct socke if (tunnel_id == 0) goto end; - tunnel = l2tp_tunnel_find(sock_net(sk), tunnel_id); + tunnel = l2tp_tunnel_get(sock_net(sk), tunnel_id); + if (tunnel) + drop_tunnel = true; /* Special case: create tunnel context if session_id and * peer_session_id is 0. Otherwise look up tunnel using supplied @@ -781,6 +784,8 @@ out_no_ppp: end: if (drop_refcnt) l2tp_session_dec_refcount(session); + if (drop_tunnel) + l2tp_tunnel_dec_refcount(tunnel); release_sock(sk); return error; Patches currently in stable-queue which might be from g.nault@alphalink.fr are queue-4.13/ppp-fix-race-in-ppp-device-destruction.patch queue-4.13/l2tp-hold-tunnel-in-pppol2tp_connect.patch queue-4.13/l2tp-check-ps-sock-before-running-pppol2tp_session_ioctl.patch