report: disable js stack when no context is entered

There are no guarantees that the JS stack can be generated when no
context is entered.

PR-URL: nodejs#48495
Fixes: nodejs/node-v8#250
Refs: https://chromium-review.googlesource.com/c/v8/v8/+/4582948
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

src/node_report.cc

@@ -66,6 +66,7 @@ static void PrintJavaScriptErrorStack(JSONWriter* writer,
                                       Isolate* isolate,
                                       Local<Value> error,
                                       const char* trigger);
+static void PrintEmptyJavaScriptStack(JSONWriter* writer);
 static void PrintJavaScriptStack(JSONWriter* writer,
                                  Isolate* isolate,
                                  const char* trigger);
@@ -184,6 +185,10 @@ static void WriteNodeReport(Isolate* isolate,
 
     // Report V8 Heap and Garbage Collector information
     PrintGCStatistics(&writer, isolate);
+  } else {
+    writer.json_objectstart("javascriptStack");
+    PrintEmptyJavaScriptStack(&writer);
+    writer.json_objectend();  // the end of 'javascriptStack'
   }
 
   // Report native stack backtrace
@@ -452,8 +457,9 @@ static void PrintEmptyJavaScriptStack(JSONWriter* writer) {
 static void PrintJavaScriptStack(JSONWriter* writer,
                                  Isolate* isolate,
                                  const char* trigger) {
-  // Can not capture the stacktrace when the isolate is in a OOM state.
-  if (!strcmp(trigger, "OOMError")) {
+  // Can not capture the stacktrace when the isolate is in a OOM state or no
+  // context is entered.
+  if (!strcmp(trigger, "OOMError") || !isolate->InContext()) {
     PrintEmptyJavaScriptStack(writer);
     return;
   }

test/addons/report-api/test.js

@@ -9,7 +9,7 @@ const tmpdir = require('../../common/tmpdir');
 const binding = path.resolve(__dirname, `./build/${common.buildType}/binding`);
 const addon = require(binding);
 
-function myAddonMain(method, { hasIsolate, hasEnv }) {
+function myAddonMain(method, { hasContext, hasEnv }) {
   tmpdir.refresh();
   process.report.directory = tmpdir.path;
 
@@ -27,10 +27,10 @@ function myAddonMain(method, { hasIsolate, hasEnv }) {
   const content = require(report);
 
   // Check that the javascript stack is present.
-  if (hasIsolate) {
+  if (hasContext) {
     assert.strictEqual(content.javascriptStack.stack.findIndex((frame) => frame.match('myAddonMain')), 0);
   } else {
-    assert.strictEqual(content.javascriptStack, undefined);
+    assert.strictEqual(content.javascriptStack.message, 'No stack.');
   }
 
   if (hasEnv) {
@@ -45,9 +45,9 @@ const methods = [
   ['triggerReportNoIsolate', false, false],
   ['triggerReportEnv', true, true],
   ['triggerReportNoEnv', false, false],
-  ['triggerReportNoContext', true, false],
+  ['triggerReportNoContext', false, false],
   ['triggerReportNewContext', true, false],
 ];
-for (const [method, hasIsolate, hasEnv] of methods) {
-  myAddonMain(method, { hasIsolate, hasEnv });
+for (const [method, hasContext, hasEnv] of methods) {
+  myAddonMain(method, { hasContext, hasEnv });
 }

test/common/report.js

@@ -55,19 +55,19 @@ function validateContent(report, fields = []) {
 
 function _validateContent(report, fields = []) {
   const isWindows = process.platform === 'win32';
-  const isJavaScriptThreadReport = report.javascriptStack != null;
+  const isJavaScriptThreadReport = report.javascriptHeap != null;
 
   // Verify that all sections are present as own properties of the report.
-  const sections = ['header', 'nativeStack', 'libuv', 'environmentVariables',
-                    'sharedObjects', 'resourceUsage', 'workers'];
+  const sections = ['header', 'nativeStack', 'javascriptStack', 'libuv',
+                    'environmentVariables', 'sharedObjects', 'resourceUsage', 'workers'];
   if (!isWindows)
     sections.push('userLimits');
 
   if (report.uvthreadResourceUsage)
     sections.push('uvthreadResourceUsage');
 
   if (isJavaScriptThreadReport)
-    sections.push('javascriptStack', 'javascriptHeap');
+    sections.push('javascriptHeap');
 
   checkForUnknownFields(report, sections);
   sections.forEach((section) => {