1 files changed, 33 insertions, 0 deletions
diff --git a/fuzz/zimage_fuzzer.rs b/fuzz/zimage_fuzzer.rs
new file mode 100644
index 0000000..13b67b3
--- /dev/null
+++ b/fuzz/zimage_fuzzer.rs
@@ -0,0 +1,33 @@
+// Copyright 2019 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#![no_main]
+extern crate kernel_loader;
+extern crate libc;
+extern crate sys_util;
+
+use sys_util::{GuestAddress, GuestMemory};
+
+use std::io::Cursor;
+use std::panic;
+use std::process;
+use std::slice;
+
+#[export_name = "LLVMFuzzerTestOneInput"]
+pub fn test_one_input(data: *const u8, size: usize) -> i32 {
+    // We cannot unwind past ffi boundaries.
+    panic::catch_unwind(|| {
+        // Safe because the libfuzzer runtime will guarantee that `data` is at least
+        // `size` bytes long and that it will be valid for the lifetime of this
+        // function.
+        let bytes = unsafe { slice::from_raw_parts(data, size) };
+        let mut kimage = Cursor::new(bytes);
+        let mem = GuestMemory::new(&[(GuestAddress(0), bytes.len() as u64 + 0x1000)]).unwrap();
+        let _ = kernel_loader::load_kernel(&mem, GuestAddress(0), &mut kimage);
+    })
+    .err()
+    .map(|_| process::abort());
+
+    0
+}