My program caused an invalid page fault in kernel32.dll, what does that mean?

depends on what you are trying to do.

I mean generaly what is a page fault. An Access Violation is when you try to access memory thats not yours, whats a page Fault(and what does it mean when its in Kernel32.Dll?).

A page fault means your program accessed a page that did not have an entry in its page table (hence, the page is invalid.) It''s similar to an access violation, basically, "you used a bad pointer."

Because it occurred in Kernel32.dll, it means you either passed an invalid pointer to a kernel32 function, or you corrupted data structures in your process which kernel32.dll depends on (like you''re process heap.)

quote: Original post by mhkrause

A page fault means your program accessed a page that did not have an entry in its page table (hence, the page is invalid.) It''s similar to an access violation, basically, "you used a bad pointer."

Because it occurred in Kernel32.dll, it means you either passed an invalid pointer to a kernel32 function, or you corrupted data structures in your process which kernel32.dll depends on (like you''re process heap.)

Well, UnhandledExceptionFilter reports certain access violations as IPFs. I think it happens when your process tries to access memory in a read-only page in an image file, but I could be wrong. Why not give the debugger a poke?