Re: [PATCH] Reserve N process to root

[Gustavo Chain]

El Wed, 10 Oct 2007 15:14:06 +0930
David Newall <david@xxxxxxxxxxxxxxx> escribiÃ:

> Gustavo Chain wrote:
> > El Wed, 10 Oct 2007 11:19:27 +0930
> > David Newall <david@xxxxxxxxxxxxxxx> escribiÃ:
> >   
> >> Gustavo Chain wrote:
> >>     
> >>> I think it's necessary to reserve some pids to the super user.
> >>> 5 must be sufficient.
> >>>       
> >> Why?  (Sorry if I missed something.)
> >>     
> >
> > Â To prevent a posible DoS ?
> >   
> 
> That was what I thought you had in mind; it protects from some kind
> of fork bomb, right?  But it doesn't seem useful unless you guarantee 
> having a process already running (with CAP_SYS_ADMIN) *before* the
> bomb goes off.

Not really, because fork bomb will never reach maximum pid possible.
And root will always have a "slot" to kill desired processes.

-- 
Gustavo ChaÃn Dumit
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