Kernel Panic after updating Kernel

[Jason A. Donenfeld]

Hi Diego,

On Wed, Jun 17, 2020 at 2:01 AM dxiri at xirihosting.com
<dxiri at xirihosting.com> wrote:
>
> Posted this on IRC but got no response, probably this will be a better place:
>
> I updated my Centos7 server yesterday and wireguard is causing a kernel panic, wanted to know if this is a known issue?
>
> Using kernel 3.10.0-1127.10.1.el7.x86_64
>
> I Tried with 2 different repos (elrepo and Copr repo for wireguard owned by jdoss) and I have the same issue.
>
> I took a screenshot of The kernel panic and uploaded at https://imgur.com/a/Ojxeor0
>
> Another interesting bit of info is that as long as I don't move traffic trough wg0 vnic, no panic happens. I can easily trigger the panic by just doing a ping to the other VPN endpoint and I am able to reproduce this every single time.
>
> # lsmod | grep -i wire
> wireguard             200896  0
> ip6_udp_tunnel         12755  1 wireguard
> udp_tunnel             14423  1 wireguard
>
> Thanks for the help!
> Diego

Huh, that's funny -- I'm unable to reproduce the bug at all.

Does running this script crash for you?
https://salsa.debian.org/debian/wireguard-linux-compat/-/raw/debian/master/debian/tests/netns-mini

If not, could you describe your setup more and maybe some repro steps for me?

Thanks,
Jason