From: Milan Broz <mb...@redhat.com>

                   -------------------
    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 <mb...@redhat.com>
Acked-by: Kay Sievers <kay.siev...@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gre...@suse.de>
Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
---
 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

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