2013/11/15 Trent Nelson <tr...@snakebite.org>: > This sounds a lot like the work I initially did with PyParallel to > try and intercept/prevent parallel threads mutating main-thread > objects. > > I ended up arriving at a much better solution by just relying on > memory protection; main thread pages are set read-only prior to > parallel threads being able to run. If a parallel thread attempts > to mutate a main thread object; a SEH is raised (SIGSEV on POSIX), > which I catch in the ceval loop and convert into an exception.
Read-only is not enough, an attack must not be able to read sensitive data. Protections of memory pages sound very low-level, so not very portable :-/ How do you know fif SIGSEGV comes from a legal call (parallel thread thing) or a real bug? Victor _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
