Sounds like details of calling conventions. Perhaps the stack isn't aligned to 16 bytes in the driver or something like that. I suspect the driver code more than the app code here. The WoW64 is just amplifying a preexisting bug that us perhaps extraordinarily unlikely or impossible on native 64.
App is easy to debug anyway you can check stack and register at time of call and return value immediately after. The driver is much more troublesome to debug. And for that reason it's always where the bugs end up, just to inconvenience us
Anyway it would be interesting to know the details of this if you figure it out.
01-05-2022, 14:54
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