@grsecurity And as I understand it, the signal hackery is still needed except in the specific case of dropping root.
@grsecurity It doesn't solve AS-safety because userspace doesn't know it will get this behavior, so it still has to take locks & try signals
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@grsecurity A full solution needs a new syscall that will ENOSYS if unavailable so userspace can try it first, then fallback to hacks.
End of conversation
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