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runtime: pageAlloc.searchAddr may point to unmapped memory in discontiguous heaps, violating its invariant [1.14 backport] #40192
Yes, sorry. I mentioned it in #40191 but forgot to copy it here.
Specifically, this bug causes a segfault that can happen to anyone for reasons outside of their control, with no workaround at the user level. Although it's generally very rare because OSes generally try to keep the mapped regions contiguous, if future versions of e.g. Linux decided not to try so hard to keep