commit | 9c3f8950931a8b6259d3644a2ad95c5c9e94fe70 | [log] [tgz] |
---|---|---|
author | Linux Build Service Account <lnxbuild@localhost> | Sun Jan 16 14:29:50 2022 -0800 |
committer | Linux Build Service Account <lnxbuild@localhost> | Sun Jan 16 14:29:50 2022 -0800 |
tree | b40cfd9e8802b2879a81663220a69c0d24691ebf | |
parent | 499cd02b43a187dca829d5c15d7ca43b51c2228a [diff] | |
parent | bad65c136a48b1a405a76f9fcb9bf268de8c708e [diff] |
Merge bad65c136a48b1a405a76f9fcb9bf268de8c708e on remote branch Change-Id: I7af103cdbaed6e99764d234f94a12ccc4c32d8de
libfuzzer-sys
CrateBarebones 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.
cargo fuzz
!The recommended way to use this crate with cargo fuzz
!.
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
./update-libfuzzer.sh <github.com/llvm-mirror/llvm-project SHA1>
All files in libfuzzer
directory are licensed NCSA.
Everything else is dual-licensed Apache 2.0 and MIT.