Re: Running out of memory in 1 easy step

[Andi Kleen <ak@muc.de>]

On Thu, Sep 14, 2000 at 06:08:28PM +0200, Wichert Akkerman wrote:
> Previously Andi Kleen wrote:
> > There is a hardwired limit of 1024 vmas/process. This is to avoid denial
> > of service attacks with attackers using up all memory with vmas.
> 
> That's trivial to circumvent using multiple processes or even threads which
> makes it a useless and possibly damaging protection imho..

The limit is actually 65536 I misremembered it. 
The main purpose is probably to avoid the counter wrapping. 
When get_unmapped_area failed you likely just ran out of virtual address space.


-Andi

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