I'm trying to reverse the `Dbgv.sys` (x86 kernel driver) for the [DbgView tool][1]. It has this `sub_10D4A` function that is called almost from the beginning of its `DriverEntry`. It goes as such:

[![enter image description here][2]][2]

What I don't understand is the construct that I showed with a red arrow. If `KeNumberProcessors` global variable is larger than 64 CPUs (or 40h) it will execute `mov eax, [eax]` instruction, which will try to read a DWORD from an address that is a number of CPUs, say `40h`.

Wouldn't it result in a BSOD?
What's the intention there?


  [1]: https://docs.microsoft.com/en-us/sysinternals/downloads/debugview
  [2]: https://i.sstatic.net/tdZHp.png