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    SubjectRe: [PATCH RFC v2 0/6] Break heap spraying needed for exploiting use-after-free
    It will reuse the memory for other things when the whole slab is freed
    though. Not really realistic to change that without it being backed by
    virtual memory along with higher-level management of regions to avoid
    intense fragmentation and metadata waste. It would depend a lot on
    having much finer-grained slab caches, otherwise it's not going to be
    much of an alternative to a quarantine feature. Even then, a
    quarantine feature is still useful, but is less suitable for a
    mainstream feature due to performance cost. Even a small quarantine
    has a fairly high performance cost.

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