Re: Understanding Linux addr space, malloc, and heap

["Vincent W. Freeh" <vin@csc.ncsu.edu>]

I guess I live in a different world.  I do lots of things I'm not 
"supposed" to do.

Moreover, it is very sensible and usable to mprotect malloc pages.  I 
have implemented simple sandboxing this way.  For my dissertation I 
implemented a DSM by mprotect'g malloc'd memory.  This system worked for 
>6 on several version of Linux and SunOS.  I actually have a better 
track record for this technique than for some things that are within the 
specifications.

Andreas Schwab wrote:
> "Vincent W. Freeh" <vin@csc.ncsu.edu> writes:
>
>
> > The point of the code is to show that one can protect malloc code.
>
>
> You "can" do many things.  But that does not mean that you always get any
> sensible behaviour.
>
> Andreas.
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