> > If the 'fix' is to relocate the skb you are doomed to lose regardless
> > of the check - unless you are willing to reallocate a lot of times,
> > and without freeing the old skb.
> > I'd assumed the 'fix' was to disable the relevant offload.
>
> We relocate once and then drop the packet if we encounter additional
> errors, including OOM, DMA mapping error, 4G boundary, etc. The new
> linear skb should not hit the 4G boundary again. The room between the
> end of this current buffer and 4G isn't big enough for the new linear
> skb.
The first skb might be just below the 4G boundary and the
second just below the 8G one.
David
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