On 05/31/2013 10:39 AM, Simon Horman wrote:

This corrects an regression introduced by "net: Use 16bits for *_headers
fields of struct skbuff" when NET_SKBUFF_DATA_USES_OFFSET is not set. In
that case skb->tail will be a pointer whereas skb->network_header
will be an offset from head. This is corrected by using wrappers that
ensure that calculations are always made using pointers.

Reported-by: Stephen Rothwell <redacted>
Reported-by: Chen Gang <redacted>
Signed-off-by: Simon Horman <horms@verge.net.au>

--
v3
* Add net-next to subject prefix

v2
* Use skb_tail_pointer() to ensure the tail portion of the calculation is
  always a pointer - it is not if NET_SKBUFF_DATA_USES_OFFSET is not set.

Thanks.

-- 
Chen Gang

Asianux Corporation