Found this by reading the code, no test failure detected yet.

The field is defined as:

```
    // virtual thread state, accessed by VM
    private volatile int state;
```

The field is defined on VM side as:

```
  macro(_state_offset, k, "state", int_signature, false)
```

And yet, it is accessed as `short`:

```
u2 java_lang_VirtualThread::state(oop vthread) {
  return vthread->short_field_acquire(_state_offset);
}
```

I think this is just asking for trouble on different endianness: the partial `u2` read from `int` field can read the "higher" two bytes, not the "lower" two bytes.