auto sortByActiveBytes = [](StackInfo* a, StackInfo* b) -> bool {
    return a->activeBytes > b->activeBytes;
  }; 
  std::stable_sort(stackInfos.begin(), stackInfos.end(), sortByActiveBytes);

the sort functor here uses pointer to StackInfo, which is mutable, and may change during the sort procedure, violates strict weak ordering that is required by c++ standard lib and crashes.

The crash behavior has been witten during the product environment.