Re: net: suspicious RCU usage in nf_hook

From: Cong Wang
Date: Fri Jan 27 2017 - 20:09:20 EST


On Fri, Jan 27, 2017 at 3:35 PM, Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:
> Oh well, I forgot to submit the official patch I think, Jan 9th.
>
> https://groups.google.com/forum/#!topic/syzkaller/BhyN5OFd7sQ
>

Hmm, but why only fragments need skb_orphan()? It seems like
any kfree_skb() inside a nf hook needs to have a preceding
skb_orphan().

Also, I am not convinced it is similar to commit 8282f27449bf15548
which is on RX path.