Re: stack overruns [was: Re: "Please HELP"-crash]

Ralf Baechle (ralf@uni-koblenz.de)
Thu, 29 Apr 1999 19:17:00 +0200


On Sun, Apr 25, 1999 at 06:00:09PM +0100, Alan Cox wrote:

> > 1) at system startup one huge block (16 kB per task slot, (8 kB stack +
> > 8 kB guard pages)) is vm_alloc'ed. The area must be 8 kB aligned.
>
> You can't vmalloc the stack without changing drivers that assume the stack
> is DMAable. Thats a 2.3.x thing but yes.

Which drivers? For machines without hardware cache coherence this is
plain a bug.

Ralf

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