Commit ebf4127c authored Aug 22, 2011 by Milan Broz Committed by Greg Kroah-Hartman Aug 22, 2011

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>

parent b5fb0a03

lib/kobject_uevent.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -282,7 +282,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
	kobj_bcast_filter,		kobj_bcast_filter,
	kobj);		kobj);
	/* ENOBUFS should be handled in userspace */		/* ENOBUFS should be handled in userspace */
	if (retval == -ENOBUFS)		if (retval == -ENOBUFS \|\| retval == -ESRCH)
	retval = 0;		retval = 0;
	} else		} else
	retval = -ENOMEM;		retval = -ENOMEM;