stack_sentinel: hang system on failure

Stack sentinel doesn't prevent corruption, it just notices when
it happens. Any memory could be in a bad state and it's more
appropriate to take the entire system down rather than just kill
the thread.

Fatal testcase will still work since it installs its own
_SysFatalErrorHandler.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
5 files changed