Re: SLUB: Return ZERO_SIZE_PTR for kmalloc(0)

[Pekka Enberg]

On 6/4/07, Roland Dreier <rdreier@xxxxxxxxx> wrote:
> No, because as was mentioned earlier in the thread, we want code to be
> able to handle 0-sized allocations without special cases.  The goal is
> that code like
>
>         buf = kmalloc(nobj * obj_size);
>         if (buf == NULL)
>                 return -ENOMEM;
>
> should work fine if nobj happens to be 0.  But we do want to get an
> oops if the code actually tries to read or write *buf.

Aah, missed that part of the discussion. Sorry for the noise ;-)
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