tree df1c9da30e0dbd9258e90f2713524107520fa6a8
parent b1bdcb59b64f806ef08d25a85c39ffb3ad841ce6
author Steffen Klassert <steffen.klassert@secunet.com> 1515137747 +0100
committer Steffen Klassert <steffen.klassert@secunet.com> 1515499318 +0100

esp: Fix GRO when the headers not fully in the linear part of the skb.

The GRO layer does not necessarily pull the complete headers
into the linear part of the skb, a part may remain on the
first page fragment. This can lead to a crash if we try to
pull the headers, so make sure we have them on the linear
part before pulling.

Fixes: 7785bba299a8 ("esp: Add a software GRO codepath")
Reported-by: syzbot+82bbd65569c49c6c0c4d@syzkaller.appspotmail.com
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>