FreeBSD gets ASLR

Implement Address Space Layout Randomization (ASLR)

With this change, randomization can be enabled for all non-fixed
mappings. It means that the base address for the mapping is selected
with a guaranteed amount of entropy (bits). If the mapping was
requested to be superpage aligned, the randomization honours the
superpage attributes.[…]

https://svnweb.freebsd.org/base?view=revision&revision=343964

 

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