You seem to have eliminated the mlock() failure as the cause of this crash. It should not have caused it anyway, but it *was* one noticeable difference between your tests and mine. Since do_page_fault() appears in the backtrace, that is useful to know.
The other big difference is SMP. What happens if you build a UP kernel and run it on your SMP machine?
Sorry for the delay, some sleep required. A build without SMP also fails, with multiple oops.
<http://www.graggrag.com/200501271213-oops/>.
cheers, Cal
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