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kobj_uevent: Ignore if some listeners cannot handle message 

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 <mbroz@redhat.com>
Acked-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Milan Broz 2011-08-22 15:51:34 +02:00 committed by Greg Kroah-Hartman
parent b5fb0a0321
commit ebf4127cd6
1 changed files with 1 additions and 1 deletions
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2
lib/kobject_uevent.c
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@ -282,7 +282,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
kobj_bcast_filter,
kobj);
/* ENOBUFS should be handled in userspace */
if (retval == -ENOBUFS)
if (retval == -ENOBUFS || retval == -ESRCH)
retval = 0;
} else
retval = -ENOMEM;