On Fri, Jul 18, 2025 at 4:37 PM Jakub Kicinski <k...@kernel.org> wrote: > > 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..
I agree that it should be fixed on the driver side. I don't think of a good reason for the change.
