From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755005Ab1AFAs4 (ORCPT ); Wed, 5 Jan 2011 19:48:56 -0500 Received: from kroah.org ([198.145.64.141]:35784 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754310Ab1AFAaF (ORCPT ); Wed, 5 Jan 2011 19:30:05 -0500 X-Mailbox-Line: From gregkh@clark.site Wed Jan 5 16:23:03 2011 Message-Id: <20110106002303.548370643@clark.site> User-Agent: quilt/0.48-11.2 Date: Wed, 05 Jan 2011 16:22:52 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Apollon Oikonomopoulos , "David S. Miller" Subject: [073/152] x25: decrement netdev reference counts on unload In-Reply-To: <20110106002500.GA3172@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.36-stable review patch. If anyone has any objections, please let us know. ------------------ From: Apollon Oikonomopoulos [ Upstream commit 33ce2b3d81dca76f589641b7a675c28f0f6375b1 ] x25 does not decrement the network device reference counts on module unload. Thus unregistering any pre-existing interface after unloading the x25 module hangs and results in unregister_netdevice: waiting for tap0 to become free. Usage count = 1 This patch decrements the reference counts of all interfaces in x25_link_free, the way it is already done in x25_link_device_down for NETDEV_DOWN events. Signed-off-by: Apollon Oikonomopoulos Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/x25/x25_link.c | 1 + 1 file changed, 1 insertion(+) --- a/net/x25/x25_link.c +++ b/net/x25/x25_link.c @@ -394,6 +394,7 @@ void __exit x25_link_free(void) list_for_each_safe(entry, tmp, &x25_neigh_list) { nb = list_entry(entry, struct x25_neigh, node); __x25_remove_neigh(nb); + dev_put(nb->dev); } write_unlock_bh(&x25_neigh_list_lock); }