On Fri, Aug 26, 2016 at 04:08:08PM -0700, Andrei Vagin wrote:
> +struct ns_common *ns_get_owner(struct ns_common *ns)
> +{
> + struct user_namespace *my_user_ns = current_user_ns();
> + struct user_namespace *owner, *p;
> +
> + /* See if the owner is in the current user namespace */
> + owner = p = ns->ops->get_owner(ns);
> + for (;;) {
> + if (!p)
> + return ERR_PTR(-EPERM);
> + if (p == my_user_ns)
> + break;
> + p = p->parent;
> + }
> +
> + return &get_user_ns(owner)->ns;
get_user_ns() bumps the owner's refcount. I don't see where
this is being dropped, especially when ns_ioctl() uses it in
the next patch.
