Re: [PATCH net] virtio-net: keep vnet header zeroed after processing XDP

[David Miller]

From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Thu, 29 Nov 2018 13:53:16 +0800

> We copy vnet header unconditionally in page_to_skb() this is wrong
> since XDP may modify the packet data. So let's keep a zeroed vnet
> header for not confusing the conversion between vnet header and skb
> metadata.
> 
> In the future, we should able to detect whether or not the packet was
> modified and keep using the vnet header when packet was not touched.
> 
> Fixes: f600b6905015 ("virtio_net: Add XDP support")
> Reported-by: Pavel Popa <pashinho1990@xxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied and queued up for -stable, thanks.