xhci panic

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

Just tried a this morning's kernel on amd64 (was looking forward to the
new xhci.c :-) ), and (laptop so no serial console):

xhci0 at pci4 dev 0 function 0: NEC USB3 Houst Controller (rev. 0x04)
xhci0: interrupting at msi2 vec 0
uvm_fault(0x..., 0x0, 1) -> e

Stopped in pid 0.1 (system) at netbsd:vmem_alloc
vmem_alloc
uvm_km_kmem_alloc
kmem_intr_alloc
kmem_intr_zalloc
xhci_init
xhci_pci_attach
...
mp_pci_scan


Cheers,

Patrick