This commit limits the maximum number of linear memories when the pooling allocator is used to ensure that the virtual memory mapping for the pooling allocator itself can succeed. Currently there are a number of crashes in the differential fuzzer where the pooling allocator can't allocate its mapping because the maximum specified number of linear memories times the number of instances exceeds the address space presumably.
Fuzzing Infrastructure for Wasmtime
This crate provides test case generators and oracles for use with fuzzing.
These generators and oracles are generally independent of the fuzzing engine
that might be using them and driving the whole fuzzing process (e.g. libFuzzer
or AFL). As such, this crate does not contain any actual fuzz targets
itself. Those are generally just a couple lines of glue code that plug raw input
from (for example) libFuzzer into a generator, and then run one or more
oracles on the generated test case.
If you're looking for the actual fuzz target definitions we currently have, they
live in wasmtime/fuzz/fuzz_targets/* and are driven by cargo fuzz and
libFuzzer.