Don't directly acess the namespace count. There's even a dedicated
helper for this.

Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 net/core/net_namespace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index fdbaf5f8ac78..d81a8b291ea8 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -315,7 +315,7 @@ int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp)
 {
 	int id;
 
-	if (refcount_read(&net->ns.count) == 0)
+	if (!check_net(net))
 		return NETNSA_NSID_NOT_ASSIGNED;
 
 	spin_lock(&net->nsid_lock);

-- 
2.47.3