[wasm][fuzzer] Add missing signature check in interpreter runner

R=zhin@chromium.org

Bug: chromium:1134324
Change-Id: Ica1f8c290ba496c7c24d8ec46f963f389ad9e8fa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2445875Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70291}

src/wasm/wasm-opcodes.h

@@ -21,7 +21,8 @@ class WasmFeatures;
 struct WasmModule;
 
 std::ostream& operator<<(std::ostream& os, const FunctionSig& function);
-bool IsJSCompatibleSignature(const FunctionSig* sig, const WasmModule* module,
+bool V8_EXPORT_PRIVATE IsJSCompatibleSignature(const FunctionSig* sig,
+                                               const WasmModule* module,
                                                const WasmFeatures&);
 
 // Control expressions and blocks.

test/common/wasm/wasm-module-runner.cc

@@ -14,6 +14,7 @@
 #include "src/wasm/wasm-js.h"
 #include "src/wasm/wasm-module.h"
 #include "src/wasm/wasm-objects.h"
+#include "src/wasm/wasm-opcodes.h"
 #include "src/wasm/wasm-result.h"
 #include "test/common/wasm/wasm-interpreter.h"
 
@@ -137,6 +138,13 @@ WasmInterpretationResult InterpretWasmModule(
   v8::internal::HandleScope scope(isolate);
   const WasmFunction* func = &instance->module()->functions[function_index];
 
+  CHECK(func->exported);
+  // This would normally be handled by export wrappers.
+  if (!IsJSCompatibleSignature(func->sig, instance->module(),
+                               WasmFeatures::FromIsolate(isolate))) {
+    return WasmInterpretationResult::Trapped(false);
+  }
+
   WasmInterpreter interpreter{
       isolate, instance->module(),
       ModuleWireBytes{instance->module_object().native_module()->wire_bytes()},