brought back missing env vars
@@ -306,6 +306,14 @@ checks or alter some of the more exotic semantics of the tool:
don't want AFL++ to spend too much time classifying that stuff and just
rapidly put all timeouts in that bin.
+ - Setting `AFL_FORKSRV_INIT_TMOUT` allows yout to specify a different timeout
+ to wait for the forkserver to spin up. The default is the `-t` value times
+ `FORK_WAIT_MULT` from `config.h` (usually 10), so for a `-t 100`, the
+ default would wait `1000` milis. Setting a different time here is useful
+ if the target has a very slow startup time, for example when doing
+ full-system fuzzing or emulation, but you don't want the actual runs
+ to wait too long for timeouts.
+
- `AFL_NO_ARITH` causes AFL++ to skip most of the deterministic arithmetics.
This can be useful to speed up the fuzzing of text-based file formats.
@@ -389,6 +397,13 @@ checks or alter some of the more exotic semantics of the tool:
for an existing out folder, even if a different `-i` was provided.
Without this setting, afl-fuzz will refuse execution for a long-fuzzed out dir.
+ - Setting `AFL_MAX_DET_EXRAS` will change the threshold at what number of elements
+ in the `-x` dictionary and LTO autodict (combined) the probabilistic mode will
+ kick off. In probabilistic mode, not all dictionary entires will be used all
+ of the times for fuzzing mutations to not make fuzzing slower by it.
+ The default count is `200` element. So for the 200 + 1st element, there is a
+ 1 in 201 chance, that one of the dictionary entry will not be used directly.
+
- Setting `AFL_NO_FORKSRV` disables the forkserver optimization, reverting to
fork + execve() call for every tested input. This is useful mostly when
working with unruly libraries that create threads or do other crazy
