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Re: [uml-user] Would UML prevent the main kernel from being crashed by badl: msg#00272

Subject: Re: [uml-user] Would UML prevent the main kernel from being crashed by badly written programs?
On Friday 24 October 2003 08:33, Patrick Lam wrote:
> I am attempting to run a program in UML with the hope that it won't
> crash the main kernel anyhow.
>
> During a few very simple tests, it seems to work well.  However, at
> least theoretically, will programs running in UML absolutely NOT crash
> the main kernel IN ANY WAY, EVEN THE PROGRAM WANTS TO DO SO?
>
> Say, is it possible at all for a very badly written (or hacked) program
> to crash UML, which in turn crash the main kernel?
>
> I think UML is good, but how can I technically prove this point to my
> managers (they want some "proofs")?
>
> Thanks very much in advance.
>
> Regards,
>
> Patrick

As it's a userspace process it should not have any permission to crash the 
host kernel (until this one is stable, don't know if the skas-patch could 
be a risk), but of course a program inside the uml could take lots of 
cpu-power ...

Regards
Daniel


-- 
"Those who would give up essential liberty, to purchase a little temporary 
safety, deserve neither liberty nor safety."  - Benjamin Franklin



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