Re: What does tainting actually mean?

[Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>]

On Wednesday 28 of April 2004 08:18, Nigel Cunningham wrote:
> Hi.
>
> On Wed, 28 Apr 2004 02:02:55 -0400, Chris Siebenmann
>
> <cks@utcc.utoronto.ca> wrote:
> >  What happens when a binary module thinks it knows the size of a
> > structure and is wrong? What happens when a binary module has a
> > concurrency problem, in any of the many forms they manifest in the Linux
> > kernel?
>
> Good points. It could be really difficult to trace the cause of those
> issues. But hard/too much effort != impossible. For every entry point to
> the module we have a known state of the system prior to and after the
> call. We could potentially checksum the whole of memory before and after
> and find out exactly what the module has changed.

This is not going to work.  Data structures can and probably will change.

> Anyway, I'm going to drop this conversation now. Work to do :>

Good. :)