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per-slab canary values are good enough for now

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Daniel Micay 2018-11-05 18:05:56 -05:00
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@ -211,8 +211,6 @@ was a bit less important and if a core goal was finding latent bugs.
and then later detect overflows/underflows
* High entropy per-slab random values
* Leading byte is zeroed to contain C string overflows
* [in-progress] Mangled into a unique value per slab slot (although not
with a strong keyed hash due to performance limitations)
* Possible slab locations are skipped and remain memory protected, leaving slab
size class regions interspersed with guard pages
* Zero size allocations are a dedicated size class with the entire region