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SubjectRe: TASK_UNMAPPED_BASE & stack location
Followup to:  <459930000.1051302738@[]>
By author: "Martin J. Bligh" <>
In newsgroup:
> Is there any good reason we can't remove TASK_UNMAPPED_BASE, and just shove
> libraries directly above the program text? Red Hat seems to have patches to
> dynamically tune it on a per-processes basis anyway ...
> Moreover, can we put the stack back where it's meant to be, below the
> program text, in that wasted 128MB of virtual space? Who really wants
> > 128MB of stack anyway (and can't fix their app)?

That space is NULL pointer trap zone. NULL pointer trapping -> good.

<> at work, <> in private!
"Unix gives you enough rope to shoot yourself in the foot."
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