panic: trap type 6, code=10, pc=0
Starting stack trace...
panic(ffffffff82fdad12) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a085730) at kerntrap+0x29b sys/arch/amd64/amd64/trap.c:327
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
0(fffffd8065368f00,fffffd8065368f00,0,fffffd8065368f00,401,0) at 0
softclock_process_kclock_timeout(fffffd8065368f00,0) at softclock_process_kclock_timeout+0x2a2 sys/kern/kern_timeout.c:693
softclock(0) at softclock+0x199 sys/kern/kern_timeout.c:746
softintr_dispatch(0) at softintr_dispatch+0xf6 sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
Xspllower() at Xspllower+0x1d
arc4random() at arc4random+0x23f
uvm_map_hint(fffffd806bfde370,3,1000,7f7fffff9000) at uvm_map_hint+0xb0 sys/uvm/uvm_map.c:3933
uaddr_rnd_select(fffffd806bfde370,fffffd807f7d0a50,ffff80002a085d90,ffff80002a085f90,3000,1000,2ea87ee641f6731e,fffffd807f7d0a50,fffffd806bfde370) at uaddr_rnd_select+0x2e7 sys/uvm/uvm_addr.c:554
uvm_addr_invoke(fffffd806bfde370,fffffd807f7d0a50,ffff80002a085d90,ffff80002a085d98,ffff80002a085f90,3000,c4d1b559a3d6a31a,fffffd806bfde370,ffff80002a085d90,0) at uvm_addr_invoke+0x145 sys/uvm/uvm_addr.c:389
uvm_map_findspace(fffffd806bfde370,ffff80002a085d90,ffff80002a085d98,ffff80002a085f90,3000,1000,332388096e444a19,1000,ffff80002a085f90) at uvm_map_findspace+0x8d sys/uvm/uvm_map.c:667
uvm_mapanon(fffffd806bfde370,ffff80002a085f90,3000,1000,80713) at uvm_mapanon+0x694 sys/uvm/uvm_map.c:836
uvm_mmapanon(fffffd806bfde370,ffff80002a085f90,3000,3,7,1002,5db9cae8c3b8373a,1002) at uvm_mmapanon+0x1d0 sys/uvm/uvm_mmap.c:1019
sys_mmap(ffff8000ffff7460,ffff80002a086100,ffff80002a086050) at sys_mmap+0xa96 sys/uvm/uvm_mmap.c:421
syscall(ffff80002a086100) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a086100) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x71e09a594a50, count: 238
End of stack trace.

dump to dev 4,1 not possible
rebooting...
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000080000000 = 2048 MiB
CPUs found: 2     Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 479bd2e4-6073-186a-8c25-a69e4074584d
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f27c0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...
>> OpenBSD/amd64 BOOT 3.67
boot> set $lines = 0
set: syntax error
boot> set $maxwidth = 0
set: syntax error
boot> show panic
boot: illegal argument panic
boot> trace
boot> show registers
boot> show proc
boot> ps
boot> show all locks
boot> show malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace