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Currently we only generate either valid user-space pointers or NULL.
Extend NULL to a set of special pointers that we will use in programs.
All targets now contain 3 special values:
- NULL
- 0xfffffffffffffff (invalid kernel pointer)
- 0x999999999999999 (non-canonical address)
Each target can add additional special pointers on top of this.
Also generate NULL/special pointers for non-opt ptr's.
This restriction was always too restrictive. We may want to generate
them with very low probability, but we do want to generate them.
Also change pointers to NULL/special during mutation
(but still not in the opposite direction).
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Fix typos, non-canonical code, remove dead code, etc.
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Squash complex structs into flat byte array and mutate this array
with generic blob mutations. This allows to mutate what we currently
consider as paddings and add/remove paddings from structs, etc.
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Make Foreach* callback accept the arg and a context struct
that can contain lots of aux info.
This (1) removes lots of unuser base/parent args,
(2) provides foundation for stopping recursion,
(3) allows to merge foreachSubargOffset.
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Put the underflow entry at the end.
Entries must end on an unconditional, non-goto entry,
otherwise fallthrough from the last entry is invalid.
Add arp tables support.
Split unspec matches/targets to unspec and inet.
Reset ipv6 and arp tables in executor.
Fix number of counters in tables.
Plus a bunch of assorted fixes for matches/targets.
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