panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff8284d2a9) at panic+0x159 sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd8057ff9e18,ffff800024b82000,1,fffffd8057ff9ec4,ffff80002e77b3f8,0) at ufsdirhash_lookup+0x8b8 sys/ufs/ufs/ufs_dirhash.c:343
ufs_lookup() at ufs_lookup+0xc15 sys/ufs/ufs/ufs_lookup.c:216
VOP_LOOKUP(fffffd805f498120,ffff80002e77b878,ffff80002e77b8a8) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002e77b848) at vfs_lookup+0x6dc sys/kern/vfs_lookup.c:566
namei(ffff80002e77b848) at namei+0x55a sys/kern/vfs_lookup.c:250
vn_open(ffff80002e77b848,201,0) at vn_open+0x17b sys/kern/vfs_vnops.c:107
doopenat(ffff8000217332c8,4,20000240,200,0,ffff80002e77ba20) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff80002e77baa0) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x3b8dbc2cd10, count: 247
End of stack trace.
syncing disks...32 17  done

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 e4c28bce-9379-8bb2-f2c8-a7cf484f58e0
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> 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