machfb panic

[   1.0549365] pci4 at ppb3 bus 4
[   1.0549365] machfb0 at pci4 dev 0 function 0: vendor 1002 product 4755 (rev. 0x9a)
[   1.0549365] machfb0: using MMIO aperture
[   1.0549365] machfb0: 16 MB aperture at 0xfb000000, 4 KB registers at 0xfafff000
[   1.0549365] machfb0: 128 KB ROM at 0xfafc0000
ref_div: 33
mclk_fb_div: 138
minref: 392 m: 36
[   1.0549365] machfb0: 2048 KB EDO DRAM 59.875 MHz, maximum RAMDAC clock 200 MHz
[   1.0549365] uvm_fault(0xffffffff8152fd18, 0x0, 1) -> e
[   1.0549365] fatal page fault in supervisor mode
[   1.0549365] trap type 6 code 0 rip 0xffffffff8039d202 cs 0x8 rflags 0x10246 cr2 0 ilevel 0x8 rsp 0xffffffff818cc420
[   1.0549365] curlwp 0xffffffff8152ee40 pid 0.1 lowest kstack 0xffffffff818c92c0
kernel: page fault trap, code=0
Stopped in pid 0.1 (system) at  netbsd:mach64_attach+0xce2:     movq    0(%rax),
%rcx
db{0}> bt
mach64_attach() at netbsd:mach64_attach+0xce2
config_attach_loc() at netbsd:config_attach_loc+0x1e3
pci_probe_device() at netbsd:pci_probe_device+0x529
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x214
pciattach() at netbsd:pciattach+0x1a9
config_attach_loc() at netbsd:config_attach_loc+0x1e3
ppbattach() at netbsd:ppbattach+0x3d3
config_attach_loc() at netbsd:config_attach_loc+0x1e3
pci_probe_device() at netbsd:pci_probe_device+0x529
pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x214
pciattach() at netbsd:pciattach+0x1a9
config_attach_loc() at netbsd:config_attach_loc+0x1e3
mp_pci_scan() at netbsd:mp_pci_scan+0x85
amd64_mainbus_attach() at netbsd:amd64_mainbus_attach+0x154
mainbus_attach() at netbsd:mainbus_attach+0x11d
config_attach_loc() at netbsd:config_attach_loc+0x1e3
cpu_configure() at netbsd:cpu_configure+0x2b
main() at netbsd:main+0x29d
db{0}> ~
[EOT]
root@eee:root>
Script done on Tue Jan 29 17:38:18 2019