On 12/13/2012 10:37 AM, Borislav Petkov wrote:

quoted

If appropriate, the code could be changed to

	(void *)(unsigned long)m->ip

Can we explicitly cast it to what it is so that we can be explicit as to
what we're casting it? IOW:

	(void *)(__u64)m->ip;

Does that even work on 32bit?

Also, does the compiler bitch about this useless cast when building with
W=123?

Uh... no.

The point is that (void *)(unsigned long) casts it to an integer of
pointer size -- in userspace you would to (void *)(size_t) or (void
*)(uintptr_t) -- so that the compiler knows "I meant to do that."

	-hpa