linux-kernel - [PATCH 6.1 08/15] genetlink: verify unregister fails for non-registered family

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Message-Id: <20250912195339.20635-9-yana2bsh@gmail.com>
Date: Fri, 12 Sep 2025 22:53:31 +0300
From: Yana Bashlykova <yana2bsh@...il.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Yana Bashlykova <yana2bsh@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org,
	lvc-project@...uxtesting.org
Subject: [PATCH 6.1 08/15] genetlink: verify unregister fails for non-registered family

Test that genl_unregister_family() returns error
when called on non-registered family.

Signed-off-by: Yana Bashlykova <yana2bsh@...il.com>
---
 .../net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c b/drivers/net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c
index f651159a311c..ad4228eda2d5 100644
--- a/drivers/net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c
+++ b/drivers/net/genetlink/net-pf-16-proto-16-family-PARALLEL_GENL.c
@@ -1402,6 +1402,10 @@ static int __init module_netlink_init(void)
 	if (ret)
 		pr_err("%s: Incorrect Generic Netlink family wasn't registered\n", __func__);
 
+	ret = genl_unregister_family(&incorrect_genl_family);
+	if (ret)
+		pr_err("%s: Incorrect Generic Netlink family wasn't unregistered\n", __func__);
+
 	ret = netlink_register_notifier(&genl_notifier);
 	if (ret)
 		goto err_family;
-- 
2.34.1