[Devel] [PATCH RHEL7 COMMIT] kobj, uevent: allow to broadcast event to ve0 from any ve

[Konstantin Khorenko]

The commit is pushed to "branch-rh7-3.10.0-514.26.1.vz7.33.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-514.26.1.vz7.33.12
------>
commit ab14494ba29caf688ba38a519cbe12552294714c
Author: Andrey Ryabinin <aryabinin at virtuozzo.com>
Date:   Fri Jul 21 12:24:48 2017 +0400

    kobj, uevent: allow to broadcast event to ve0 from any ve
    
    Commit 732eb5c2ac0a ("ve/kobj: Send events per VE instead of
    all net-namespaces broadcasting") forbid to send uevents to any another
    ve. So when container stumps on FS-corruption and sends uevent about that,
    the host uevents won't see it. Let's allow to broadcast any events to
    the ve0 from other ve's to fix this
    
    https://jira.sw.ru/browse/PSBM-68710
    
    Signed-off-by: Andrey Ryabinin <aryabinin at virtuozzo.com>
    Reviewed-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 lib/kobject_uevent.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index 2ef1e15..f67dca2 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -259,11 +259,13 @@ int kobject_uevent_env_one(struct kobject *kobj, enum kobject_action action,
 		struct sock *uevent_sock = ue_sk->sk;
 		struct sk_buff *skb;
 		size_t len;
+		struct ve_struct *owner_ve;
 
 		if (!netlink_has_listeners(uevent_sock, 1))
 			continue;
 
-		if (sock_net(uevent_sock)->owner_ve != get_exec_env())
+		owner_ve = sock_net(uevent_sock)->owner_ve;
+		if (!ve_is_super(owner_ve) && owner_ve != get_exec_env())
 			continue;
 
 		/* allocate message with the maximum possible size */