Hi Chris,
On Tue, Dec 26, 2017 at 01:49:59AM +0000, Chris Rankin wrote:
(...)
> [ 35.100181] Call Trace:
> [ 35.102709] dump_stack+0x46/0x59
> [ 35.106095] check_preemption_disabled+0xca/0xda
> [ 35.110786] ip6_pol_route+0x46b/0x509 [ipv6]
(...)
One patch touched this area between 4.14.8 and 4.14.9, you may try
to revert it to see if it fixes the issue :
9704f81 ("ipv6: grab rt->rt6i_ref before allocating pcpu rt")
Willy