On 09/04/20(Thu) 16:10, Massimiliano Stucchi wrote:
> >Synopsis: Crash while using ospfd over vxlan
> >Category: bug
> >Environment:
> System : OpenBSD 6.6
> Details : OpenBSD 6.6 (GENERIC.MP) #5: Sun Feb 16 01:56:11 MST 2020
>
> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>
> Architecture: OpenBSD.amd64
> Machine : amd64
> >Description:
> Setting up an OSPF session over VXLAN leads to a kernel crash
> >How-To-Repeat:
>
> I have setup an ospf session over a vxlan interface. When this is up,
> it takes about 2-3 minutes for the crash to consistently happen.
>
> No other action is necessary.
>
> At this address:
>
> https://max.stucchi.ch/bugreport/
>
> you can find screenshots from the ddb prompt, including a full trace.
>
> If needed, I can also provide access to the console.
It's a recursion. I don't know anything about vxlan(4) or how the
encapsulation works but the following happens at least 10 times:
...
vxlan_lookup()
udp_input()
ip_deliver()
ip_ours()
ip_input_if()
ipv4_input()
ether_input()
if_vinput()
vxlan_lookup()
...
Maybe you can share your setup (vxlan config, ospf config, etc) so
somebody can try to reproduce and fix it.
