Default bitmap size of 65536 is too small for larger binaries

[acidghost]

The default bitmap size should be set to the same value as this, which is the default value for the bitmap size before starting the fork-server.

ATM, with the current bitmap size, I get this warning and later a crash here.

The initial bitmap will be resized by the spec-fuzzer once it gets the updated bitmap size from __afl_final_loc. This should also work outside of LTO (see here).

This can be fixed by updating the default bitmap size in the generated config.ron (or the default one for kernel / snapshot) and adding the same value in a AFL_MAP_SIZE env variable in fuzz.sh. I should be able to make a PR in the following days.

[schumilo]

Fixed in commit f201fa2.