panic: pool_do_get: pdppl free list modified: page 0xfffffd805dc39000; item addr 0xfffffd805dc39000; offset 0x0=0xd4637d4f12468d08 != 0xd4637d4f12468d4a
Starting stack trace...
panic(ffffffff8287f1f0) at panic+0x16f sys/kern/subr_prf.c:229
pool_do_get(ffffffff82e80ec8,1,ffff80002a219448) at pool_do_get+0x443
pool_get(ffffffff82e80ec8,1) at pool_get+0xf0 sys/kern/subr_pool.c:582
pmap_create() at pmap_create+0x144 sys/arch/amd64/amd64/pmap.c:1369
uvmspace_fork(ffff800034bcc028) at uvmspace_fork+0x64 uvmspace_init sys/uvm/uvm_map.c:3302 [inline]
uvmspace_fork(ffff800034bcc028) at uvmspace_fork+0x64 uvmspace_alloc sys/uvm/uvm_map.c:3280 [inline]
uvmspace_fork(ffff800034bcc028) at uvmspace_fork+0x64 sys/uvm/uvm_map.c:3852
process_new(ffff80003090ecf8,ffff800034bcc028,1) at process_new+0x3dc sys/kern/kern_fork.c:278
fork1(ffff80002aeb8d20,1,ffffffff81deeba0,0,ffff80002a2196d0,0) at fork1+0x2ef sys/kern/kern_fork.c:399
syscall(ffff80002a219780) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a219780) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x73d84bd3f840, count: 248
End of stack trace.
syncing disks...15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15  giving up

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 50375c3b-e826-8a7e-06ca-b163c863336b
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 0x000f27f0: 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 3.65
boot> show malloc
boot: illegal argument malloc
boot> show all pools
boot> machine ddbcpu 0
machine: syntax error
boot> trace
boot> machine ddbcpu 1
machine: syntax error
boot> trace