v8/test/fuzzer/json.cc
Max Moroz 3b0fd6bd24 [fuzzer] Fix OOM in v8_json_parser_fuzzer due to unnecessary long input.
Bug: Chromium:798921
Change-Id: I6cd3dbe49f586cdedfc70c6c6ad83391240a65d9
Reviewed-on: https://chromium-review.googlesource.com/1138550
Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Max Moroz <mmoroz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54494}
2018-07-17 14:25:27 +00:00

39 lines
1.2 KiB
C++

// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include "include/v8.h"
#include "test/fuzzer/fuzzer-support.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
// Ignore too long inputs as they tend to find OOM or timeouts, not real bugs.
if (size > 16 * 1024) {
return false;
}
v8_fuzzer::FuzzerSupport* support = v8_fuzzer::FuzzerSupport::Get();
v8::Isolate* isolate = support->GetIsolate();
v8::Isolate::Scope isolate_scope(isolate);
v8::HandleScope handle_scope(isolate);
v8::Context::Scope context_scope(support->GetContext());
v8::TryCatch try_catch(isolate);
if (size > INT_MAX) return 0;
v8::Local<v8::String> source;
if (!v8::String::NewFromOneByte(isolate, data, v8::NewStringType::kNormal,
static_cast<int>(size))
.ToLocal(&source)) {
return 0;
}
v8::JSON::Parse(support->GetContext(), source).IsEmpty();
isolate->RequestGarbageCollectionForTesting(
v8::Isolate::kFullGarbageCollection);
return 0;
}