commit | 9735c131ac7902cd180302ce84956eb49067cc74 | [log] [tgz] |
---|---|---|
author | Joel Galenson <jgalenson@google.com> | Wed Jun 09 19:59:03 2021 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Wed Jun 09 19:59:03 2021 +0000 |
tree | 6440f44bfda39c54746928367851be82624fe239 | |
parent | 5c89488feb95f26d3d69bdf851313cdf5f5b1f9e [diff] | |
parent | 6787f8932a8dad0b19924327ac07142b7e11e66e [diff] |
Merge "Upgrade rust/crates/libfuzzer-sys to 0.4.1" am: f0dd9f2bff am: 35ec03e672 am: 6787f8932a Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/libfuzzer-sys/+/1712968 Change-Id: I2b414877c4812b405bf22b9b96927c630608cc58
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 = "0.4.0" 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.