eth/tracers/native: prevent panic for LOG edge-cases (#26848)

This PR fixes OOM panic in the callTracer as well as panicing on
opcode validation errors (e.g. stack underflow) in callTracer and
prestateTracer.

Co-authored-by: Martin Holst Swende <martin@swende.se>

eth/tracers/native/call.go

@@ -148,6 +148,10 @@ func (t *callTracer) CaptureEnd(output []byte, gasUsed uint64, err error) {
 
 // CaptureState implements the EVMLogger interface to trace a single step of VM execution.
 func (t *callTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
+	// skip if the previous op caused an error
+	if err != nil {
+		return
+	}
 	// Only logs need to be captured via opcode processing
 	if !t.config.WithLog {
 		return
@@ -176,7 +180,12 @@ func (t *callTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, sco
 			topics[i] = common.Hash(topic.Bytes32())
 		}
 
-		data := scope.Memory.GetCopy(int64(mStart.Uint64()), int64(mSize.Uint64()))
+		data, err := tracers.GetMemoryCopyPadded(scope.Memory, int64(mStart.Uint64()), int64(mSize.Uint64()))
+		if err != nil {
+			// mSize was unrealistically large
+			return
+		}
+
 		log := callLog{Address: scope.Contract.Address(), Topics: topics, Data: hexutil.Bytes(data)}
 		t.callstack[len(t.callstack)-1].Logs = append(t.callstack[len(t.callstack)-1].Logs, log)
 	}

eth/tracers/native/prestate.go

@@ -133,6 +133,9 @@ func (t *prestateTracer) CaptureEnd(output []byte, gasUsed uint64, err error) {
 
 // CaptureState implements the EVMLogger interface to trace a single step of VM execution.
 func (t *prestateTracer) CaptureState(pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
+	if err != nil {
+		return
+	}
 	stack := scope.Stack
 	stackData := stack.Data()
 	stackLen := len(stackData)