panic: ufsdirhash_lookup: bad offset in hash array
Starting stack trace...
panic(ffffffff828532b9) at panic+0x159 sys/kern/subr_prf.c:229
ufsdirhash_lookup(fffffd80791eb968,ffff80002169c400,1,fffffd80791eba14,ffff80002e8d1c78,0) 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(fffffd807cf6b538,ffff80002e8d20f8,ffff80002e8d2128) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002e8d20c8) at vfs_lookup+0x6dc sys/kern/vfs_lookup.c:566
namei(ffff80002e8d20c8) at namei+0x55a sys/kern/vfs_lookup.c:250
vn_open(ffff80002e8d20c8,20001,0) at vn_open+0xf8 sys/kern/vfs_vnops.c:140
doopenat(ffff8000216d52c8,5,200001c0,20000,0,ffff80002e8d22a0) at doopenat+0x26e sys/kern/vfs_syscalls.c:1126
syscall(ffff80002e8d2320) at syscall+0x4a8 sys/arch/amd64/amd64/trap.c:623
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x53741215750, count: 247
End of stack trace.
syncing disks...33 25  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 8a8635c2-f252-d190-235a-0f50a6ed73cd
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 $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