From: Jacob Wen
Date: Wed, 30 Jan 2019 14:55:14 +0800
> Use pskb_may_pull() to make sure the optional fields are in skb linear
> parts, so we can safely read them later.
>
> It's easy to reproduce the issue with a net driver that supports paged
> skb data. Just create a L2TPv3 over IP tunnel and
Use pskb_may_pull() to make sure the optional fields are in skb linear
parts, so we can safely read them later.
It's easy to reproduce the issue with a net driver that supports paged
skb data. Just create a L2TPv3 over IP tunnel and then generates some
network traffic.
Once reproduced, rx err in /
