[Bug 239894] security.bsd.stack_guard_page default causes Java to crash

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=239894

--- Comment #20 from Konstantin Belousov <kib at FreeBSD.org> ---
After r351773, you can add the following fragment at the beginning of the jvm
initialization.  It is safe to ignore errors from procctl(2), which means that
the kernel is old and stack overflow detection would be still broken.

        int arg = PROC_STACKGAP_DISABLE | PROC_STACKGAP_ENABLE_EXEC;
        procctl(P_PID, getpid(), PROC_STACKGAP_CTL, &arg);

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