7bace1d41a
The streaming decoder computed the code section start from the passed
"offset". That offset is computed from the module offset *after* the
number of functions has been read. Hence 1 is subtracted, with the
comment:
// The offset passed to {ProcessCodeSectionHeader} is an error offset and
// not the start offset of a buffer. Therefore we need the -1 here.
That subtraction of 1 worked when the number of functions was encoded in
a 1-byte LEB, otherwise it was off.
This CL fixes the immediate issue of passing the right code offset. The
usage of the previously existing offset also seems wrong, and I will try
to clean that up in a follow-up CL.
R=ahaas@chromium.org
CC=szuend@chromium.org
Bug: chromium:1150303
Change-Id: I64bb2ececeb4749b7ba2096cd148ccb4079eca4f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2562383
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71503}
670 lines
23 KiB
C++
670 lines
23 KiB
C++
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "test/unittests/test-utils.h"
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#include "src/objects/objects-inl.h"
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#include "src/wasm/module-decoder.h"
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#include "src/wasm/streaming-decoder.h"
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#include "src/objects/descriptor-array.h"
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#include "src/objects/dictionary.h"
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#include "test/common/wasm/wasm-macro-gen.h"
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namespace v8 {
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namespace internal {
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namespace wasm {
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struct MockStreamingResult {
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size_t num_sections = 0;
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size_t num_functions = 0;
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WasmError error;
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OwnedVector<uint8_t> received_bytes;
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bool ok() const { return !error.has_error(); }
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MockStreamingResult() = default;
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};
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class MockStreamingProcessor : public StreamingProcessor {
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public:
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explicit MockStreamingProcessor(MockStreamingResult* result)
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: result_(result) {}
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bool ProcessModuleHeader(Vector<const uint8_t> bytes,
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uint32_t offset) override {
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Decoder decoder(bytes.begin(), bytes.end());
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uint32_t magic_word = decoder.consume_u32("wasm magic");
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if (decoder.failed() || magic_word != kWasmMagic) {
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result_->error = WasmError(0, "expected wasm magic");
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return false;
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}
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uint32_t magic_version = decoder.consume_u32("wasm version");
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if (decoder.failed() || magic_version != kWasmVersion) {
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result_->error = WasmError(4, "expected wasm version");
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return false;
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}
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return true;
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}
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// Process all sections but the code section.
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bool ProcessSection(SectionCode section_code, Vector<const uint8_t> bytes,
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uint32_t offset) override {
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++result_->num_sections;
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return true;
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}
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bool ProcessCodeSectionHeader(int num_functions, uint32_t offset,
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std::shared_ptr<WireBytesStorage>,
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int code_section_start,
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int code_section_length) override {
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return true;
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}
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// Process a function body.
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bool ProcessFunctionBody(Vector<const uint8_t> bytes,
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uint32_t offset) override {
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++result_->num_functions;
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return true;
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}
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void OnFinishedChunk() override {}
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// Finish the processing of the stream.
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void OnFinishedStream(OwnedVector<uint8_t> bytes) override {
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result_->received_bytes = std::move(bytes);
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}
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// Report an error detected in the StreamingDecoder.
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void OnError(const WasmError& error) override {
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result_->error = error;
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CHECK(!result_->ok());
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}
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void OnAbort() override {}
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bool Deserialize(Vector<const uint8_t> module_bytes,
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Vector<const uint8_t> wire_bytes) override {
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return false;
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}
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private:
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MockStreamingResult* const result_;
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};
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class WasmStreamingDecoderTest : public ::testing::Test {
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public:
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void ExpectVerifies(Vector<const uint8_t> data, size_t expected_sections,
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size_t expected_functions) {
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for (int split = 0; split <= data.length(); ++split) {
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MockStreamingResult result;
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auto stream = StreamingDecoder::CreateAsyncStreamingDecoder(
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std::make_unique<MockStreamingProcessor>(&result));
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stream->OnBytesReceived(data.SubVector(0, split));
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stream->OnBytesReceived(data.SubVector(split, data.length()));
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stream->Finish();
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EXPECT_TRUE(result.ok());
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EXPECT_EQ(expected_sections, result.num_sections);
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EXPECT_EQ(expected_functions, result.num_functions);
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EXPECT_EQ(data, result.received_bytes.as_vector());
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}
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}
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void ExpectFailure(Vector<const uint8_t> data, uint32_t error_offset,
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const char* message) {
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for (int split = 0; split <= data.length(); ++split) {
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MockStreamingResult result;
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auto stream = StreamingDecoder::CreateAsyncStreamingDecoder(
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std::make_unique<MockStreamingProcessor>(&result));
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stream->OnBytesReceived(data.SubVector(0, split));
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stream->OnBytesReceived(data.SubVector(split, data.length()));
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stream->Finish();
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EXPECT_FALSE(result.ok());
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EXPECT_EQ(error_offset, result.error.offset());
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EXPECT_EQ(message, result.error.message());
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}
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}
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};
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TEST_F(WasmStreamingDecoderTest, EmptyStream) {
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MockStreamingResult result;
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auto stream = StreamingDecoder::CreateAsyncStreamingDecoder(
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std::make_unique<MockStreamingProcessor>(&result));
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stream->Finish();
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EXPECT_FALSE(result.ok());
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}
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TEST_F(WasmStreamingDecoderTest, IncompleteModuleHeader) {
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const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion)};
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{
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MockStreamingResult result;
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auto stream = StreamingDecoder::CreateAsyncStreamingDecoder(
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std::make_unique<MockStreamingProcessor>(&result));
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stream->OnBytesReceived(VectorOf(data, 1));
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stream->Finish();
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EXPECT_FALSE(result.ok());
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}
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for (uint32_t length = 1; length < sizeof(data); ++length) {
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ExpectFailure(VectorOf(data, length), length - 1,
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"unexpected end of stream");
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}
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}
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TEST_F(WasmStreamingDecoderTest, MagicAndVersion) {
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const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion)};
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ExpectVerifies(ArrayVector(data), 0, 0);
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}
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TEST_F(WasmStreamingDecoderTest, BadMagic) {
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for (uint32_t x = 1; x; x <<= 1) {
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const uint8_t data[] = {U32_LE(kWasmMagic ^ x), U32_LE(kWasmVersion)};
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ExpectFailure(ArrayVector(data), 0, "expected wasm magic");
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}
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}
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TEST_F(WasmStreamingDecoderTest, BadVersion) {
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for (uint32_t x = 1; x; x <<= 1) {
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const uint8_t data[] = {U32_LE(kWasmMagic), U32_LE(kWasmVersion ^ x)};
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ExpectFailure(ArrayVector(data), 4, "expected wasm version");
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}
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}
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TEST_F(WasmStreamingDecoderTest, OneSection) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x6, // Section Length
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0 // 6
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};
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ExpectVerifies(ArrayVector(data), 1, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneSection_b) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x86, // Section Length = 6 (LEB)
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0x0, // --
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0 // 6
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};
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ExpectVerifies(ArrayVector(data), 1, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneShortSection) {
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// Short section means that section length + payload is less than 5 bytes,
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// which is the maximum size of the length field.
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x2, // Section Length
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0x0, // Payload
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0x0 // 2
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};
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ExpectVerifies(ArrayVector(data), 1, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneShortSection_b) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x82, // Section Length = 2 (LEB)
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0x80, // --
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0x0, // --
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0x0, // Payload
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0x0 // 2
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};
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ExpectVerifies(ArrayVector(data), 1, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneEmptySection) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x0 // Section Length
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};
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ExpectVerifies(ArrayVector(data), 1, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneSectionNotEnoughPayload1) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x6, // Section Length
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0 // 5
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"unexpected end of stream");
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}
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TEST_F(WasmStreamingDecoderTest, OneSectionNotEnoughPayload2) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x6, // Section Length
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0x0 // Payload
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"unexpected end of stream");
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}
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TEST_F(WasmStreamingDecoderTest, OneSectionInvalidLength) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x80, // Section Length (invalid LEB)
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0x80, // --
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0x80, // --
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0x80, // --
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0x80, // --
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1, "expected section length");
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}
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TEST_F(WasmStreamingDecoderTest, TwoLongSections) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x6, // Section Length
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x2, // Section ID
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0x7, // Section Length
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x0 // 7
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};
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ExpectVerifies(ArrayVector(data), 2, 0);
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}
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TEST_F(WasmStreamingDecoderTest, TwoShortSections) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x1, // Section Length
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0x0, // Payload
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0x2, // Section ID
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0x2, // Section Length
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0x0, // Payload
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0x0, // 2
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};
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ExpectVerifies(ArrayVector(data), 2, 0);
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}
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TEST_F(WasmStreamingDecoderTest, TwoSectionsShortLong) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x1, // Section Length
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0x0, // Payload
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0x2, // Section ID
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0x7, // Section Length
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0x0, // Payload
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x0 // 7
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};
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ExpectVerifies(ArrayVector(data), 2, 0);
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}
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TEST_F(WasmStreamingDecoderTest, TwoEmptySections) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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0x1, // Section ID
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0x0, // Section Length
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0x2, // Section ID
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0x0 // Section Length
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};
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ExpectVerifies(ArrayVector(data), 2, 0);
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}
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TEST_F(WasmStreamingDecoderTest, OneFunction) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x8, // Section Length
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0x1, // Number of Functions
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0x6, // Function Length
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0x0, // Function
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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};
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ExpectVerifies(ArrayVector(data), 0, 1);
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}
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TEST_F(WasmStreamingDecoderTest, OneShortFunction) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x3, // Section Length
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0x1, // Number of Functions
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0x1, // Function Length
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0x0, // Function
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};
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ExpectVerifies(ArrayVector(data), 0, 1);
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}
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TEST_F(WasmStreamingDecoderTest, EmptyFunction) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x2, // Section Length
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0x1, // Number of Functions
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0x0, // Function Length -- ERROR
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"invalid function length (0)");
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}
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TEST_F(WasmStreamingDecoderTest, TwoFunctions) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x10, // Section Length
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0x2, // Number of Functions
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0x6, // Function Length
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0x0, // Function
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x7, // Function Length
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0x0, // Function
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x0, // 7
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};
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ExpectVerifies(ArrayVector(data), 0, 2);
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}
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TEST_F(WasmStreamingDecoderTest, TwoFunctions_b) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0xB, // Section Length
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0x2, // Number of Functions
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0x1, // Function Length
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0x0, // Function
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0x7, // Function Length
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0x0, // Function
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x0, // 7
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};
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ExpectVerifies(ArrayVector(data), 0, 2);
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}
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TEST_F(WasmStreamingDecoderTest, CodeSectionLengthZero) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x0, // Section Length
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"code section cannot have size 0");
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}
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TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooHigh) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0xD, // Section Length
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0x2, // Number of Functions
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0x7, // Function Length
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0x0, // Function
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0x0, // 2
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0x0, // 3
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0x0, // 4
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0x0, // 5
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0x0, // 6
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0x0, // 7
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0x1, // Function Length
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0x0, // Function
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"not all code section bytes were used");
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}
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TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooHighZeroFunctions) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0xD, // Section Length
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0x0, // Number of Functions
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};
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ExpectFailure(ArrayVector(data), sizeof(data) - 1,
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"not all code section bytes were used");
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}
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TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLow) {
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const uint8_t data[] = {
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U32_LE(kWasmMagic), // --
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U32_LE(kWasmVersion), // --
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kCodeSectionCode, // Section ID
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0x9, // Section Length
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0x2, // Number of Functions <0>
|
|
0x7, // Function Length <1>
|
|
0x0, // Function <2>
|
|
0x0, // 2 <3>
|
|
0x0, // 3 <3>
|
|
0x0, // 4 <4>
|
|
0x0, // 5 <5>
|
|
0x0, // 6 <6>
|
|
0x0, // 7 <7>
|
|
0x1, // Function Length <8> -- ERROR
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), sizeof(data) - 2,
|
|
"read past code section end");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLowEndsInNumFunctions) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x1, // Section Length
|
|
0x82, // Number of Functions <0>
|
|
0x80, // -- <1> -- ERROR
|
|
0x00, // --
|
|
0x7, // Function Length
|
|
0x0, // Function
|
|
0x0, // 2
|
|
0x0, // 3
|
|
0x0, // 4
|
|
0x0, // 5
|
|
0x0, // 6
|
|
0x0, // 7
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), 12, "invalid code section length");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, CodeSectionLengthTooLowEndsInFunctionLength) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x5, // Section Length
|
|
0x82, // Number of Functions <0>
|
|
0x80, // -- <1>
|
|
0x00, // -- <2>
|
|
0x87, // Function Length <3>
|
|
0x80, // -- <4>
|
|
0x00, // -- <5> -- ERROR
|
|
0x0, // Function
|
|
0x0, // 2
|
|
0x0, // 3
|
|
0x0, // 4
|
|
0x0, // 5
|
|
0x0, // 6
|
|
0x0, // 7
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), 15, "read past code section end");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, NumberOfFunctionsTooHigh) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0xB, // Section Length
|
|
0x4, // Number of Functions
|
|
0x7, // Function Length
|
|
0x0, // Function
|
|
0x0, // 2
|
|
0x0, // 3
|
|
0x0, // 4
|
|
0x0, // 5
|
|
0x0, // 6
|
|
0x0, // 7
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), sizeof(data) - 1,
|
|
"unexpected end of stream");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, NumberOfFunctionsTooLow) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x8, // Section Length
|
|
0x2, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
0x2, // Function Length
|
|
0x0, // Function byte#0
|
|
0x0, // Function byte#1 -- ERROR
|
|
0x1, // Function Length
|
|
0x0 // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), sizeof(data) - 3,
|
|
"not all code section bytes were used");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, TwoCodeSections) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x3, // Section Length
|
|
0x1, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
kCodeSectionCode, // Section ID -- ERROR
|
|
0x3, // Section Length
|
|
0x1, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), sizeof(data) - 5,
|
|
"code section can only appear once");
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, UnknownSection) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x3, // Section Length
|
|
0x1, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
kUnknownSectionCode, // Section ID
|
|
0x3, // Section Length
|
|
0x1, // Name Length
|
|
0x1, // Name
|
|
0x0, // Content
|
|
};
|
|
ExpectVerifies(ArrayVector(data), 1, 1);
|
|
}
|
|
|
|
TEST_F(WasmStreamingDecoderTest, UnknownSectionSandwich) {
|
|
const uint8_t data[] = {
|
|
U32_LE(kWasmMagic), // --
|
|
U32_LE(kWasmVersion), // --
|
|
kCodeSectionCode, // Section ID
|
|
0x3, // Section Length
|
|
0x1, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
kUnknownSectionCode, // Section ID
|
|
0x3, // Section Length
|
|
0x1, // Name Length
|
|
0x1, // Name
|
|
0x0, // Content
|
|
kCodeSectionCode, // Section ID -- ERROR
|
|
0x3, // Section Length
|
|
0x1, // Number of Functions
|
|
0x1, // Function Length
|
|
0x0, // Function
|
|
};
|
|
ExpectFailure(ArrayVector(data), sizeof(data) - 5,
|
|
"code section can only appear once");
|
|
}
|
|
|
|
} // namespace wasm
|
|
} // namespace internal
|
|
} // namespace v8
|