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Re: whitelist for safe-mode probes (or just a better blacklist?)
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: Martin Hunt <hunt at redhat dot com>
- Cc: systemtap at sources dot redhat dot com
- Date: 20 Sep 2006 11:14:14 -0400
- Subject: Re: whitelist for safe-mode probes (or just a better blacklist?)
- References: <1158683336.10983.27.camel@dragon>
Martin Hunt <hunt@redhat.com> writes:
> [...] To guarantee a probe will not crash the kernel it is going to
> be necessary to generate a whitelist of probe points.
Sure, except that this guarantee is only as good as the method used to
generate the whitelist.
> [...] How would this all work? The whitelist and blacklist would be
> files distributed with Systemtap. They would be updated
> automatically with a test script. [...]
How do you imagine this test script working? Could it generate a list
roughly matching the "in-our-experience-so-far-safe" set in a
reasonable timeframe? (It would not be very helpful if it took months
to run, or resulted in a small list.)
- FChE