panic: acquiring blockable sleep lock with spinlock or critical section held (rwlock) vmmaplk
Starting stack trace...
panic(ffffffff827c653f) at panic+0x16f sys/kern/subr_prf.c:229
witness_checkorder(fffffd805d0e8cc8,1,0) at witness_checkorder+0x116d sys/kern/subr_witness.c:838
rw_enter_read(fffffd805d0e8cb8) at rw_enter_read+0x87 sys/kern/kern_rwlock.c:112
uvmfault_lookup(ffff800026d707a0,0) at uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1785
uvm_fault_check(ffff800026d707a0,ffff800026d707d8,ffff800026d70800) at uvm_fault_check+0x3e sys/uvm/uvm_fault.c:672
uvm_fault(fffffd805d0e8bd0,157bb0b000,0,1) at uvm_fault+0xf2 sys/uvm/uvm_fault.c:600
kpageflttrap(ffff800026d70940,157bb0be20) at kpageflttrap+0x252 sys/arch/amd64/amd64/trap.c:279
kerntrap(ffff800026d70940) at kerntrap+0xf3 sys/arch/amd64/amd64/trap.c:332
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
softclock_process_kclock_timeout(fffffd805fc2df00,0) at softclock_process_kclock_timeout+0x3e sys/kern/kern_timeout.c:676
softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:754
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
ttread(ffff800000d52800,ffff800026d70fd0,0) at ttread+0x5f9 sys/kern/tty.c:1592
ptsread(501,ffff800026d70fd0,0) at ptsread+0x262 sys/kern/tty_pty.c:321
spec_read(ffff800026d70db0) at spec_read+0xfa sys/kern/spec_vnops.c:215
VOP_READ(fffffd805fef5540,ffff800026d70fd0,0,fffffd807f7d6680) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
vn_read(fffffd807d542ef0,ffff800026d70fd0,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369
dofilereadv(ffff800021267560,6,ffff800026d70fd0,0,ffff800026d710c0) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247
sys_readv(ffff800021267560,ffff800026d71070,ffff800026d710c0) at sys_readv+0xab sys/kern/sys_generic.c:194
syscall(ffff800026d71140) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline]
syscall(ffff800026d71140) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x927942b9600, count: 235
End of stack trace.
syncing disks...28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28 28  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 2c48b237-609e-0a7d-d6ca-08d70f46a694
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 0x000f2820: 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