On Sun, 9 Mar 2025 05:37:18 +0900 Kohei Enju wrote: > Both netdev_lock() and netdev_lock_ops() are called before > list_netdevice() in register_netdevice(). > No other context can access the struct net_device, so we don't need these > locks in this context. Doesn't sysfs get registered earlier? I'm afraid not being able to take the lock from the registration path ties our hands too much. Maybe we need to make a more serious attempt at letting the caller take the lock?