question - inconsistent results from ptrace
Roni Simonian
v.simonian at comcast.net
Sun Apr 26 21:49:05 UTC 2009
Thank you for the response, Roland!
> Off hand, it seems more likely there is some authentic variation
> between runs for whatever reason than that this has something to do with
> ptrace.
>
I agree, it most likely has to do with the process itself. I am puzzled
because something as simple as "hello world!" does not have any
asynchronous events and should be totally reproducible.
> Have you tried making your program look at the tracee's PC every time (use
> PTRACE_GETREGS or PTRACE_PEEKUSR) and emit it so you can compare two differing
> runs a little more meaningfully?
>
I'll do as you suggest and will let you know the results.
Talk to you soon,
Roni.
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