netdev - Re: skb_over_panic when sending esp traffic from a vmware guest

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Message-ID: <20170822053249.GK31224@secunet.com>
Date:   Tue, 22 Aug 2017 07:32:49 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Nick Huber <nick.huber@...tapplied.net>
CC:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: skb_over_panic when sending esp traffic from a vmware guest

On Thu, Aug 17, 2017 at 07:19:03PM +0000, Nick Huber wrote:
> I've been experience the following traceback since upgrading from the 4.9 kernel to the 4.11 branch. I've only seen this in a few VMWare guests and I haven't been able to narrow down what exactly is causing it. I'm not familiar with kernel debugging but any help in tracing this down would be appreciated.

Can you give some details about your setup?

>From the backtrace I see that you use GRE tunnels.
How is the setup of the GRE tunnel and the SAs?
How is routing done? In particular I'm interested
if you use routing by netfilter or socket marks.