RE: Adjusting further size determinations?

From: David Laight
Date: Wed Oct 18 2017 - 08:59:01 EST


From: SF Markus Elfring
> >>>> Unpleasant consequences are possible in both cases.
> >> How much do you care to reduce the failure probability further?
> >
> > Zero.
>
> I am interested to improve the software situation a bit more here.

There are probably better places to spend your time!

If you want 'security' for kmalloc() then:

#define KMALLOC_TYPE(flags) (type *)kmalloc(sizeof (type), flags)
#define KMALLOC(ptr, flags) *(ptr) = KMALLOC_TYPE(typeof *(ptr), flags)

and change:
ptr = kmalloc(sizeof *ptr, flags);
to:
KMALLOC(&ptr, flags);

But it is all churn for churn's sake.

David