Re: [RFC] [PATCH] cpuset operations causes Badness at mm/slab.c:777warning

[Christoph Lameter]

On Fri, 1 Jun 2007, Valdis.Kletnieks@xxxxxx wrote:

> On Fri, 01 Jun 2007 16:00:30 PDT, Linus Torvalds said:
> 
> > 	#define BADPTR ((void *)16)
> 
> > I bet you'd find *more* problems that way than by returning NULL, and 
> > you'd also avoid the whole problem with "if (!ptr) return -ENOMEM".
> 
> Hmm.. this looks like a good contender for "first usage of #ifndef CONFIG_STABLE"

The warning? Sure but the BADPTR (or ZERO_SIZE_PTR now) will stay. 
It is definitely an error to deference an object that has no size.

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