Re: [PATCH] Reserve N process to root

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Gustavo Chain wrote:
El Wed, 10 Oct 2007 15:14:06 +0930
David Newall <[email protected]> escribió:
Gustavo Chain wrote:
El Wed, 10 Oct 2007 11:19:27 +0930
David Newall <[email protected]> escribió:
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.)
¿ 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.

This is like pulling teeth: painful.

I don't think you have satisfactorily explained why it's necessary. "To prevent a possible DoS" isn't sufficient by itself. I think you should explain the scenarios you have in mind.

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