uvm_fault(0xfffffd806c25bb90, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff81f26b0d cs 8 rflags 10246 cr2 0 cpl 9 rsp ffff80003c9b1430
gsbase 0xffffffff8378eff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff81f26b0d
Starting stack trace...
panic(ffffffff8339414c) at panic+0x1ba sys/kern/subr_prf.c:229
kerntrap(ffff80003c9b1380) at kerntrap+0x2fb
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
pool_do_get(ffffffff83893c20,9,ffff80003c9b1518) at pool_do_get+0x37d pool_update_curpage sys/kern/subr_pool.c:1059 [inline]
pool_do_get(ffffffff83893c20,9,ffff80003c9b1518) at pool_do_get+0x37d sys/kern/subr_pool.c:767
pool_get(ffffffff83893c20,9) at pool_get+0x11a sys/kern/subr_pool.c:-1
amap_alloc1(7f0,1,0) at amap_alloc1+0x330 sys/uvm/uvm_amap.c:-1
amap_alloc(7f0000,1,0) at amap_alloc+0xad sys/uvm/uvm_amap.c:-1
amap_copy(fffffd806c25bb90,fffffd806f6b6938,1,1,200000010000,200000800000) at amap_copy+0x6ac sys/uvm/uvm_amap.c:569
uvm_map_pageable_wire(fffffd806c25bb90,fffffd806f6b63f8,fffffd806f6b67e8,0,0,0) at uvm_map_pageable_wire+0x1ea sys/uvm/uvm_map.c:2106
sys_mlock(ffff80002f0ff250,ffff80003c9b18e0,ffff80003c9b1830) at sys_mlock+0x23d sys/uvm/uvm_mmap.c:849
syscall(ffff80003c9b18e0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline]
syscall(ffff80003c9b18e0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe60308625e0, count: 245
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 016acda6-80d9-6675-f1e2-930bbf0c87d3
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 0x000f26e0: 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 $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