On Fri, 18 Jul 2025 13:20:14 -0700 Haiyang Zhang wrote: > The loop in default_device_exit_net() won't be able to properly detect the > head then stop, and will hit NULL pointer, when a driver, like hv_netvsc, > automatically moves the slave device together with the master device. > > To fix this, add a helper function to return the first migratable netdev > correctly, no matter one or two devices were removed from this net's list > in the last iteration.
FTR I think that what the driver is trying to do is way too hacky, and it should be fixed instead. But I defer to Kuniyuki for the final word, maybe this change is useful for other reasons..
