Re: [patch] larger kernel stack (8k->16k) per task

From: Arjan van de Ven (arjanv@redhat.com)
Date: Fri Feb 08 2002 - 11:57:55 EST


On Fri, Feb 08, 2002 at 04:59:47PM +0000, Tigran Aivazian wrote:
> On Fri, 8 Feb 2002, Arjan van de Ven wrote:
> > If you need even more in your code (I assume you do otherwise you wouldn't
> > have done the work) then I really suggest you take a long hard look and fix
> > the obvious bugs or the design....
>
> Arjan, I completely agree with you, but please do not overlook one obvious
> thing -- sometimes (well, most of the time) in order to fix those stack
> corruption issues you _first_ need to apply this patch and then it becomes
> obvious that the reason for this "random" corruption is the stack
> overflow. A kernel panic is not shouting like "I am a stack overflow!"

Stack redzoning makes a lot of sense. And checking isn't that expensive...

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