Kernel panic on 5.3.1-arch1-1-ARCH

[Nico Schottelius]

Hey Jason,

thanks for the quick reply - I' ll upgrade as soon as a new package is
released and give a status update afterwards. Thanks for tracking it
down!

Best,

Nico

Jason A. Donenfeld <Jason at zx2c4.com> writes:

> This isn't WireGuard, actually. It's a line in wg-quick's bash that
> says `ip rule add ... suppress_prefix ...`.
>
> You can reproduce the kernel crash without WireGuard anywhere in the
> equation with this sequence:
>
> ip netns add crash
> ip -n crash link add dummy1 type dummy
> ip -n crash link set dummy1 up
> ip -n crash -6 route add default dev dummy1
> ip -n crash -6 rule add table main suppress_prefixlength 0
> ip netns exec crash ping -f -c 1000 -W 1 1234::1 || true
> ip -n crash -6 rule del table main suppress_prefixlength 0
> ip -n crash link del dummy1
> ip netns del crash
>
> I submitted a patch for this upstream here:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=ca7a03c4175366a92cee0ccc4fec0038c3266e26
>
> It's been backported to stable already. Update your kernel to 5.3.4
> and things should work again for you.
>
> Jason


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