Re: [PATCH] nsfs: fix oops when ns->ops is not provided

On Wed, 2 Jun 2021 11:16:32 +0200 Christian Brauner wrote:

quoted

diff --git a/net/socket.c b/net/socket.c
index 27e3e7d53f8e..3b44f2700e0c 100644
--- a/net/socket.c
+++ b/net/socket.c

@@ -1081,6 +1081,8 @@ static long sock_do_ioctl(struct net *net, struct socket *sock,
 
 struct ns_common *get_net_ns(struct ns_common *ns)
 {
+       if (!IS_ENABLED(CONFIG_NET_NS))
+               return ERR_PTR(-EOPNOTSUPP);
        return &get_net(container_of(ns, struct net, ns))->ns;
 }
 EXPORT_SYMBOL_GPL(get_net_ns);  

Yeah, that's better than my hack. :) Maybe this function should simply
move over to net/core/net_namespace.c with the other netns getters, e.g.
get_net_ns_by_fd()?

SGTM!