On Mon, 27 Feb 2017 14:35:17 -0800
Eric Dumazet [off-list ref] wrote:

On Mon, 2017-02-27 at 14:14 -0800, Stephen Hemminger wrote:

quoted

The original design (as Davem mentioned) was that IRQ's must be disabled
during device polling. If that was true, then the race above
would be impossible.  

I would love to see an alternative patch.

Turn off busy poll? 
The poll stuff runs risk of breaking more things.