From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756746Ab2HOTvG (ORCPT ); Wed, 15 Aug 2012 15:51:06 -0400 Received: from mail.windriver.com ([147.11.1.11]:36851 "EHLO mail.windriver.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756681Ab2HOTuw (ORCPT ); Wed, 15 Aug 2012 15:50:52 -0400 From: Paul Gortmaker To: , CC: Milan Broz , Greg Kroah-Hartman , Paul Gortmaker Subject: [v2.6.34-stable 081/165] kobj_uevent: Ignore if some listeners cannot handle message Date: Wed, 15 Aug 2012 15:47:05 -0400 Message-ID: <1345060109-9187-82-git-send-email-paul.gortmaker@windriver.com> X-Mailer: git-send-email 1.7.12.rc2 In-Reply-To: <1345060109-9187-1-git-send-email-paul.gortmaker@windriver.com> References: <1345060109-9187-1-git-send-email-paul.gortmaker@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Milan Broz ------------------- This is a commit scheduled for the next v2.6.34 longterm release. http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git If you see a problem with using this for longterm, please comment. ------------------- 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 Signed-off-by: Paul Gortmaker --- lib/kobject_uevent.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 7b48d44..0273ead 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -236,7 +236,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, retval = netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL); /* ENOBUFS should be handled in userspace */ - if (retval == -ENOBUFS) + if (retval == -ENOBUFS || retval == -ESRCH) retval = 0; } else retval = -ENOMEM; -- 1.7.12.rc2