netdev - Re: kernels > v4.12 oops/crash with ipsec-traffic: bisected to b838d5e1c5b6e57b10ec8af2268824041e3ea911: ipv4: mark DST_NOGC and remove the operation of dst

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Message-ID: <2148126.OrYGBW958l@stwm.de>
Date:   Fri, 07 Sep 2018 11:53:36 +0200
From:   Wolfgang Walter <linux@...m.de>
To:     Steffen Klassert <steffen.klassert@...unet.com>
Cc:     netdev@...r.kernel.org, Wei Wang <weiwan@...gle.com>
Subject: Re: kernels > v4.12 oops/crash with ipsec-traffic: bisected to b838d5e1c5b6e57b10ec8af2268824041e3ea911: ipv4: mark DST_NOGC and remove the operation of dst_free()

Hello,

didn't respond as I've been on vacation.

Am Freitag, 31. August 2018, 08:50:24 schrieb Steffen Klassert:
> On Thu, Aug 30, 2018 at 08:53:50PM +0200, Wolfgang Walter wrote:
> > Hello,
> > 
> > kernels > 4.12 do not work on one of our main routers. They crash as soon
> > as ipsec-tunnels are configured and ipsec-traffic actually flows.
> 
> Can you please send the backtrace of this crash?
> 

I'll try today. The oops quickly disappears because other problems arising 
from it pop up. The machine crashes and no logs are logged. I try to make foto 
or try to log to the serial console.

At the moment I only see that there is xfrm_???? stuff in the call trace as 
xfrm_lookup, xfrm_route_????, and it is while routing a packet.

With later kernels (4.18.5) the machine seems to crash without a call trace on 
console.

Regards,
-- 
Wolfgang Walter
Studentenwerk München
Anstalt des öffentlichen Rechts