Re: [PATCH net V2] virtio-net: drop NETIF_F_FRAGLIST

From: David Miller
Date: Fri Aug 07 2015 - 03:13:32 EST


From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Wed, 5 Aug 2015 10:34:04 +0800

> virtio declares support for NETIF_F_FRAGLIST, but assumes
> that there are at most MAX_SKB_FRAGS + 2 fragments which isn't
> always true with a fraglist.
>
> A longer fraglist in the skb will make the call to skb_to_sgvec overflow
> the sg array, leading to memory corruption.
>
> Drop NETIF_F_FRAGLIST so we only get what we can handle.
>
> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied, thanks Jason.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/