| From 44bb14ce6bb206f38edce55757cbe45733d896f7 Mon Sep 17 00:00:00 2001 |
| From: Milan Broz <mbroz@redhat.com> |
| Date: Mon, 22 Aug 2011 15:51:34 +0200 |
| Subject: [PATCH] kobj_uevent: Ignore if some listeners cannot handle message |
| |
| 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 <mbroz@redhat.com> |
| Acked-by: Kay Sievers <kay.sievers@vrfy.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> |
| |
| 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.rc1.1.gbce1580 |
| |
