instrumenting vs. module loading

[Frank Ch. Eigler]

Hi -

Ananth N Mavinakayanahalli wrote:
> [...]
> On more thought, we won't see any such issues - we won't have the 
> breakpoint hit at all - the whole text gets overlaid right? [...]

It sounds at least like a race condition (probe executing on one CPU,
another one performing a module load/unload).  Anyway, systemtap will
endavour to provide more safety in this regard than kprobes alone
would.

(Brad, this scenario should go into your testing paper, as could my
kprobes stress-testing suggestions in http://tinyurl.com/7m74w, which
is an even meaner version of Rusty's ia64 idea.)

- FChE
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