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.
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