mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-18 19:20:05 +00:00
9c4481419e
spirv-fuzz features transformations that should be applicable by construction. Assertions are used to detect when such transformations turn out to be inapplicable. Failures of such assertions indicate bugs in the fuzzer. However, when using the fuzzer at scale (e.g. in ClusterFuzz) reports of these assertion failures create noise, and cause the fuzzer to exit early. This change adds an option whereby inapplicable transformations can be ignored. This reduces noise and allows fuzzing to continue even when a transformation that should be applicable but is not has been erroneously created.
189 lines
6.3 KiB
C++
189 lines
6.3 KiB
C++
// Copyright (c) 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/fuzz/fuzzer_pass_construct_composites.h"
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#include "gtest/gtest.h"
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#include "source/fuzz/fuzzer_util.h"
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#include "source/fuzz/pseudo_random_generator.h"
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#include "test/fuzz/fuzz_test_util.h"
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namespace spvtools {
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namespace fuzz {
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namespace {
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TEST(FuzzerPassConstructCompositesTest, IsomorphicStructs) {
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// This test declares various isomorphic structs, and a struct that is made up
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// of these isomorphic structs. The pass to construct composites is then
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// applied several times to check that no issues arise related to using a
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// value of one struct type when a value of an isomorphic struct type is
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// required.
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std::string shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%7 = OpConstant %6 0
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%8 = OpTypeStruct %6 %6 %6
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%9 = OpTypeStruct %6 %6 %6
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%10 = OpTypeStruct %6 %6 %6
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%11 = OpTypeStruct %6 %6 %6
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%12 = OpTypeStruct %6 %6 %6
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%13 = OpTypeStruct %8 %9 %10 %11 %12
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%14 = OpConstantComposite %8 %7 %7 %7
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%15 = OpConstantComposite %9 %7 %7 %7
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%16 = OpConstantComposite %10 %7 %7 %7
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%17 = OpConstantComposite %11 %7 %7 %7
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%18 = OpConstantComposite %12 %7 %7 %7
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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FuzzerContext fuzzer_context(MakeUnique<PseudoRandomGenerator>(0), 100,
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false);
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for (uint32_t i = 0; i < 10; i++) {
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const auto context =
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BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
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context.get(), validator_options, kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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protobufs::TransformationSequence transformation_sequence;
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FuzzerPassConstructComposites fuzzer_pass(
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context.get(), &transformation_context, &fuzzer_context,
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&transformation_sequence, false);
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fuzzer_pass.Apply();
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// We just check that the result is valid.
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
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context.get(), validator_options, kConsoleMessageConsumer));
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}
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}
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TEST(FuzzerPassConstructCompositesTest, IsomorphicArrays) {
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// This test declares various isomorphic arrays, and a struct that is made up
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// of these isomorphic arrays. The pass to construct composites is then
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// applied several times to check that no issues arise related to using a
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// value of one array type when a value of an isomorphic array type is
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// required.
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std::string shader = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main"
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeFloat 32
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%50 = OpTypeInt 32 0
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%51 = OpConstant %50 3
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%7 = OpConstant %6 0
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%8 = OpTypeArray %6 %51
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%9 = OpTypeArray %6 %51
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%10 = OpTypeArray %6 %51
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%11 = OpTypeArray %6 %51
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%12 = OpTypeArray %6 %51
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%13 = OpTypeStruct %8 %9 %10 %11 %12
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%14 = OpConstantComposite %8 %7 %7 %7
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%15 = OpConstantComposite %9 %7 %7 %7
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%16 = OpConstantComposite %10 %7 %7 %7
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%17 = OpConstantComposite %11 %7 %7 %7
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%18 = OpConstantComposite %12 %7 %7 %7
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpNop
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OpReturn
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OpFunctionEnd
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)";
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const auto env = SPV_ENV_UNIVERSAL_1_3;
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const auto consumer = nullptr;
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FuzzerContext fuzzer_context(MakeUnique<PseudoRandomGenerator>(0), 100,
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false);
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for (uint32_t i = 0; i < 10; i++) {
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const auto context =
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BuildModule(env, consumer, shader, kFuzzAssembleOption);
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spvtools::ValidatorOptions validator_options;
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
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context.get(), validator_options, kConsoleMessageConsumer));
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TransformationContext transformation_context(
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MakeUnique<FactManager>(context.get()), validator_options);
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protobufs::TransformationSequence transformation_sequence;
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FuzzerPassConstructComposites fuzzer_pass(
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context.get(), &transformation_context, &fuzzer_context,
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&transformation_sequence, false);
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fuzzer_pass.Apply();
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// We just check that the result is valid.
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ASSERT_TRUE(fuzzerutil::IsValidAndWellFormed(
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context.get(), validator_options, kConsoleMessageConsumer));
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}
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}
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} // namespace
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} // namespace fuzz
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} // namespace spvtools
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