Android VTS 12.0 Release 6 (9195682)
Snap for 7259849 from 20420b19577e0677b49adc48515cf492ecb76510 to sc-release

Change-Id: I2e0927bc523862f4269f5a60bce9b20f40a5e09c
tree: b40cfd9e8802b2879a81663220a69c0d24691ebf
  1. .github/
  2. ci/
  3. libfuzzer/
  4. patches/
  5. src/
  6. .cargo_vcs_info.json
  7. .gitignore
  8. Android.bp
  9. build.rs
  10. Cargo.toml
  11. Cargo.toml.orig
  12. CHANGELOG.md
  13. LICENSE
  14. METADATA
  15. MODULE_LICENSE_APACHE2
  16. MODULE_LICENSE_MIT
  17. OWNERS
  18. README.md
  19. rust-toolchain
  20. update-libfuzzer.sh
README.md

The libfuzzer-sys Crate

Barebones wrapper around LLVM's libFuzzer runtime library.

The CPP parts are extracted from compiler-rt git repository with git filter-branch.

libFuzzer relies on LLVM sanitizer support. The Rust compiler has built-in support for LLVM sanitizer support, for now, it's limited to Linux. As a result, libfuzzer-sys only works on Linux.

Usage

Use cargo fuzz!

The recommended way to use this crate with cargo fuzz!.

Manual Usage

This crate can also be used manually as following:

First create a new cargo project:

$ cargo new --bin fuzzed
$ cd fuzzed

Then add a dependency on the fuzzer-sys crate and your own crate:

[dependencies]
libfuzzer-sys = "0.3.0"
your_crate = { path = "../path/to/your/crate" }

Change the fuzzed/src/main.rs to fuzz your code:

#![no_main]

use libfuzzer_sys::fuzz_target;

fuzz_target!(|data: &[u8]| {
    // code to fuzz goes here
});

Build by running the following command:

$ cargo rustc -- \
    -C passes='sancov' \
    -C llvm-args='-sanitizer-coverage-level=3' \
    -C llvm-args='-sanitizer-coverage-inline-8bit-counters' \
    -Z sanitizer=address

And finally, run the fuzzer:

$ ./target/debug/fuzzed

Updating libfuzzer from upstream

./update-libfuzzer.sh <github.com/llvm-mirror/llvm-project SHA1>

License

All files in libfuzzer directory are licensed NCSA.

Everything else is dual-licensed Apache 2.0 and MIT.