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Scrub deallocations before reallocation. #609
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So I ran a single pass of mimalloc-bench on this
So m0 is not mitigations, m12 is everything except free scrub and guarded mempcy, m13 has free scrub, and sn-chk is all the checks. This looks a bit pricey in places to turn on always. But worth having as an option. |
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Sadly for Larson it goes slower. But I think Larson is mostly untouched allocations below the size of a page. |
This adds an additional mitigation to scrub allocations before they are reallocated. We should do perf analysis before we decide if this is an always on mitigation.