core/vm/runtime, core/vm: fuzzers

core/vm/contracts_fuzz_test.go

@@ -0,0 +1,70 @@
+// Copyright 2023 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package vm
+
+import (
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+)
+
+// allPrecompiles does not map to the actual set of precompiles, as it also contains
+// repriced versions of precompiles at certain slots
+var allPrecompiles = map[common.Address]PrecompiledContract{
+	common.BytesToAddress([]byte{1}):    &ecrecover{},
+	common.BytesToAddress([]byte{2}):    &sha256hash{},
+	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
+	common.BytesToAddress([]byte{4}):    &dataCopy{},
+	common.BytesToAddress([]byte{5}):    &bigModExp{eip2565: false},
+	common.BytesToAddress([]byte{0xf5}): &bigModExp{eip2565: true},
+	common.BytesToAddress([]byte{6}):    &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{7}):    &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{9}):    &blake2F{},
+	common.BytesToAddress([]byte{0x0a}): &kzgPointEvaluation{},
+
+	common.BytesToAddress([]byte{0x0f, 0x0a}): &bls12381G1Add{},
+	common.BytesToAddress([]byte{0x0f, 0x0b}): &bls12381G1Mul{},
+	common.BytesToAddress([]byte{0x0f, 0x0c}): &bls12381G1MultiExp{},
+	common.BytesToAddress([]byte{0x0f, 0x0d}): &bls12381G2Add{},
+	common.BytesToAddress([]byte{0x0f, 0x0e}): &bls12381G2Mul{},
+	common.BytesToAddress([]byte{0x0f, 0x0f}): &bls12381G2MultiExp{},
+	common.BytesToAddress([]byte{0x0f, 0x10}): &bls12381Pairing{},
+	common.BytesToAddress([]byte{0x0f, 0x11}): &bls12381MapG1{},
+	common.BytesToAddress([]byte{0x0f, 0x12}): &bls12381MapG2{},
+}
+
+func FuzzPrecompiledContracts(f *testing.F) {
+	// Create list of addresses
+	var addrs []common.Address
+	for k := range allPrecompiles {
+		addrs = append(addrs, k)
+	}
+	f.Fuzz(func(t *testing.T, addr uint8, input []byte) {
+		a := addrs[int(int(addr)%len(addrs))]
+		p := allPrecompiles[a]
+		gas := p.RequiredGas(input)
+		if gas > 10_000_000 {
+			return
+		}
+		inWant := string(input)
+		RunPrecompiledContract(p, input, gas)
+		if inHave := string(input); inWant != inHave {
+			t.Errorf("Precompiled %v modified input data", a)
+		}
+	})
+}

core/vm/contracts_test.go

@@ -43,32 +43,6 @@ type precompiledFailureTest struct {
 	Name          string
 }
 
-// allPrecompiles does not map to the actual set of precompiles, as it also contains
-// repriced versions of precompiles at certain slots
-var allPrecompiles = map[common.Address]PrecompiledContract{
-	common.BytesToAddress([]byte{1}):    &ecrecover{},
-	common.BytesToAddress([]byte{2}):    &sha256hash{},
-	common.BytesToAddress([]byte{3}):    &ripemd160hash{},
-	common.BytesToAddress([]byte{4}):    &dataCopy{},
-	common.BytesToAddress([]byte{5}):    &bigModExp{eip2565: false},
-	common.BytesToAddress([]byte{0xf5}): &bigModExp{eip2565: true},
-	common.BytesToAddress([]byte{6}):    &bn256AddIstanbul{},
-	common.BytesToAddress([]byte{7}):    &bn256ScalarMulIstanbul{},
-	common.BytesToAddress([]byte{8}):    &bn256PairingIstanbul{},
-	common.BytesToAddress([]byte{9}):    &blake2F{},
-	common.BytesToAddress([]byte{0x0a}): &kzgPointEvaluation{},
-
-	common.BytesToAddress([]byte{0x0f, 0x0a}): &bls12381G1Add{},
-	common.BytesToAddress([]byte{0x0f, 0x0b}): &bls12381G1Mul{},
-	common.BytesToAddress([]byte{0x0f, 0x0c}): &bls12381G1MultiExp{},
-	common.BytesToAddress([]byte{0x0f, 0x0d}): &bls12381G2Add{},
-	common.BytesToAddress([]byte{0x0f, 0x0e}): &bls12381G2Mul{},
-	common.BytesToAddress([]byte{0x0f, 0x0f}): &bls12381G2MultiExp{},
-	common.BytesToAddress([]byte{0x0f, 0x10}): &bls12381Pairing{},
-	common.BytesToAddress([]byte{0x0f, 0x11}): &bls12381MapG1{},
-	common.BytesToAddress([]byte{0x0f, 0x12}): &bls12381MapG2{},
-}
-
 // EIP-152 test vectors
 var blake2FMalformedInputTests = []precompiledFailureTest{
 	{

core/vm/runtime/runtime_fuzz_test.go

@@ -18,13 +18,11 @@ package runtime
 
 import (
 	"testing"
-
-	"github.com/ethereum/go-ethereum/core/vm/runtime"
 )
 
-func Fuzz(f *testing.F) {
+func FuzzVmRuntime(f *testing.F) {
 	f.Fuzz(func(t *testing.T, code, input []byte) {
-		runtime.Execute(code, input, &runtime.Config{
+		Execute(code, input, &Config{
 			GasLimit: 12000000,
 		})
 	})

oss-fuzz.sh

@@ -102,10 +102,12 @@ mv $PROJPATH/common/bitutil/compress_test.go $PROJPATH/common/bitutil/compress_t
 compile_fuzzer common/bitutil  FuzzEncoder      fuzzBitutilEncoder
 compile_fuzzer common/bitutil  FuzzDecoder      fuzzBitutilDecoder
 
+compile_fuzzer core/vm/runtime  FuzzVmRuntime      fuzzVmRuntime
+compile_fuzzer core/vm  FuzzPrecompiledContracts      fuzzPrecompiledContracts
+
 compile_fuzzer tests/fuzzers/bn256    FuzzAdd   fuzzBn256Add
 compile_fuzzer tests/fuzzers/bn256    FuzzMul   fuzzBn256Mul
 compile_fuzzer tests/fuzzers/bn256    FuzzPair  fuzzBn256Pair
-compile_fuzzer tests/fuzzers/runtime  Fuzz      fuzzVmRuntime
 compile_fuzzer tests/fuzzers/keystore   Fuzz fuzzKeystore
 compile_fuzzer tests/fuzzers/txfetcher  Fuzz fuzzTxfetcher
 compile_fuzzer tests/fuzzers/rlp        Fuzz fuzzRlp