From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934490Ab1KJDZH (ORCPT ); Wed, 9 Nov 2011 22:25:07 -0500 Received: from cantor2.suse.de ([195.135.220.15]:42110 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933701Ab1KJDZD (ORCPT ); Wed, 9 Nov 2011 22:25:03 -0500 X-Mailbox-Line: From gregkh@clark.kroah.org Wed Nov 9 13:27:07 2011 Message-Id: <20111109212707.225328030@clark.kroah.org> User-Agent: quilt/0.48-16.4 Date: Wed, 09 Nov 2011 13:26:30 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Milan Broz , Kay Sievers Subject: [068/262] kobj_uevent: Ignore if some listeners cannot handle message In-Reply-To: <20111109212847.GA20838@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Milan Broz commit ebf4127cd677e9781b450e44dfaaa1cc595efcaa upstream. kobject_uevent() uses a multicast socket and should ignore if one of listeners cannot handle messages or nobody is listening at all. Easily reproducible when a process in system is cloned with CLONE_NEWNET flag. (See also http://article.gmane.org/gmane.linux.kernel.device-mapper.dm-crypt/5256) Signed-off-by: Milan Broz Acked-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- lib/kobject_uevent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -282,7 +282,7 @@ int kobject_uevent_env(struct kobject *k kobj_bcast_filter, kobj); /* ENOBUFS should be handled in userspace */ - if (retval == -ENOBUFS) + if (retval == -ENOBUFS || retval == -ESRCH) retval = 0; } else retval = -ENOMEM;