From: Christian Brauner <brauner@kernel.org>
Date: Thu, 18 Sep 2025 10:11:54 +0000 (+0200)
Subject: net: use check_net()
X-Git-Tag: v6.18-rc1~232^2~4^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dc41b844da530e94f5b8384deb2af602cbeb312a;p=thirdparty%2Fkernel%2Fstable.git

net: use check_net()

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

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index a6a3de56a81ca..d5e3fd8191631 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);