[PATCH net] net: ipvlan: check register_netdevice_notifier() error in ipvlan_init_module()
From: Minhong He <hidden>
Date: 2026-08-03 09:00:17
Also in:
lkml
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
ipvlan_init_module() ignores register_netdevice_notifier() errors and continues module initialization, which can leave ipvlan loaded without its netdev notifier registered. Check the error and fail module initialization early. Signed-off-by: Minhong He <redacted> --- drivers/net/ipvlan/ipvlan_main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index ed46439a9f4e..518c7b97deaa 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c@@ -1048,7 +1048,9 @@ static int __init ipvlan_init_module(void) int err; ipvlan_init_secret(); - register_netdevice_notifier(&ipvlan_notifier_block); + err = register_netdevice_notifier(&ipvlan_notifier_block); + if (err) + return err; #if IS_ENABLED(CONFIG_IPV6) register_inet6addr_notifier(&ipvlan_addr6_notifier_block); register_inet6addr_validator_notifier(
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2.25.1