On Tue, May 31, 2016 at 09:19:37PM -0700, Cong Wang wrote: > > Hmm, why could this happen? The upper device should be linked > with the lower device, where a refcount is already held. > Also, the work is cancelled in ->uninit().
Of course it can happen. We are talking about the source macvlan device that we just looked up using the Ethernet address. That device has nothing to do with the packet now so it may be deleted at any time. We do flush the work but only when the all macvlan devices on a port have been deleted. Perhaps you're confusing the source device with vlan->lowerdev which is confusingly the actual hardware device? Cheers, -- Email: Herbert Xu <herb...@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
