report: handle on-fatalerror better

--report-on-fatalerror was not honored properly, as there was no way to check the value which was stored in the Environment pointer which can be inaccessible under certain fatal error situations. Move the flag out of Environment pointer so that this is doable. Co-authored-by: Shobhit Chittora [email protected] PR-URL: nodejs#32207 Fixes: nodejs#31576 Refs: nodejs#29881 Reviewed-By: Gireesh Punathil <[email protected]> Reviewed-By: Sam Roberts <[email protected]>
addaleax · Mar 25, 2020 · 2fa74e3 · 2fa74e3
1 parent 388cef6
commit 2fa74e3
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Showing 5 changed files with 31 additions and 22 deletions.
diff --git a/src/node_errors.cc b/src/node_errors.cc
@@ -406,7 +406,7 @@ void OnFatalError(const char* location, const char* message) {
 
   Isolate* isolate = Isolate::GetCurrent();
   Environment* env = Environment::GetCurrent(isolate);
-  if (env == nullptr || env->isolate_data()->options()->report_on_fatalerror) {
+  if (per_process::cli_options->report_on_fatalerror) {
     report::TriggerNodeReport(
         isolate, env, message, "FatalError", "", Local<String>());
   }

diff --git a/src/node_options.cc b/src/node_options.cc
@@ -590,10 +590,6 @@ PerIsolateOptionsParser::PerIsolateOptionsParser(
             "generate diagnostic report upon receiving signals",
             &PerIsolateOptions::report_on_signal,
             kAllowedInEnvironment);
-  AddOption("--report-on-fatalerror",
-            "generate diagnostic report on fatal (internal) errors",
-            &PerIsolateOptions::report_on_fatalerror,
-            kAllowedInEnvironment);
   AddOption("--report-signal",
             "causes diagnostic report to be produced on provided signal,"
             " unsupported in Windows. (default: SIGUSR2)",
@@ -667,6 +663,10 @@ PerProcessOptionsParser::PerProcessOptionsParser(
   AddOption("--v8-options",
             "print V8 command line options",
             &PerProcessOptions::print_v8_help);
+  AddOption("--report-on-fatalerror",
+              "generate diagnostic report on fatal (internal) errors",
+              &PerProcessOptions::report_on_fatalerror,
+              kAllowedInEnvironment);
 
 #ifdef NODE_HAVE_I18N_SUPPORT
   AddOption("--icu-data-dir",

diff --git a/src/node_options.h b/src/node_options.h
@@ -186,7 +186,6 @@ class PerIsolateOptions : public Options {
   bool no_node_snapshot = false;
   bool report_uncaught_exception = false;
   bool report_on_signal = false;
-  bool report_on_fatalerror = false;
   bool report_compact = false;
   std::string report_signal = "SIGUSR2";
   std::string report_filename;
@@ -236,6 +235,7 @@ class PerProcessOptions : public Options {
   std::string use_largepages = "off";
   bool trace_sigint = false;
   std::vector<std::string> cmdline;
+  bool report_on_fatalerror = false;
 
   inline PerIsolateOptions* get_per_isolate_options();
   void CheckOptions(std::vector<std::string>* errors) override;

diff --git a/src/node_report_module.cc b/src/node_report_module.cc
@@ -131,13 +131,13 @@ static void SetSignal(const FunctionCallbackInfo<Value>& info) {
 static void ShouldReportOnFatalError(const FunctionCallbackInfo<Value>& info) {
   Environment* env = Environment::GetCurrent(info);
   info.GetReturnValue().Set(
-      env->isolate_data()->options()->report_on_fatalerror);
+      node::per_process::cli_options->report_on_fatalerror);
 }
 
 static void SetReportOnFatalError(const FunctionCallbackInfo<Value>& info) {
   Environment* env = Environment::GetCurrent(info);
   CHECK(info[0]->IsBoolean());
-  env->isolate_data()->options()->report_on_fatalerror = info[0]->IsTrue();
+  node::per_process::cli_options->report_on_fatalerror = info[0]->IsTrue();
 }
 
 static void ShouldReportOnSignal(const FunctionCallbackInfo<Value>& info) {

diff --git a/test/report/test-report-fatal-error.js b/test/report/test-report-fatal-error.js
@@ -1,6 +1,6 @@
 'use strict';
 
-const common = require('../common');
+require('../common');
 const assert = require('assert');
 // Testcase to produce report on fatal error (javascript heap OOM)
 if (process.argv[2] === 'child') {
@@ -20,17 +20,26 @@ if (process.argv[2] === 'child') {
   const helper = require('../common/report.js');
   const tmpdir = require('../common/tmpdir');
   tmpdir.refresh();
-  const spawn = require('child_process').spawn;
-  const args = ['--report-on-fatalerror',
-                '--max-old-space-size=20',
-                __filename,
-                'child'];
-  const child = spawn(process.execPath, args, { cwd: tmpdir.path });
-  child.on('exit', common.mustCall((code) => {
-    assert.notStrictEqual(code, 0, 'Process exited unexpectedly');
-    const reports = helper.findReports(child.pid, tmpdir.path);
-    assert.strictEqual(reports.length, 1);
-    const report = reports[0];
-    helper.validate(report);
-  }));
+  const spawnSync = require('child_process').spawnSync;
+  let args = ['--report-on-fatalerror',
+              '--max-old-space-size=20',
+              __filename,
+              'child'];
+
+  let child = spawnSync(process.execPath, args, { cwd: tmpdir.path });
+
+  assert.notStrictEqual(child.status, 0, 'Process exited unexpectedly');
+  let reports = helper.findReports(child.pid, tmpdir.path);
+  assert.strictEqual(reports.length, 1);
+  const report = reports[0];
+  helper.validate(report);
+  // Verify that reports are not created on fatal error by default.
+  args = ['--max-old-space-size=20',
+          __filename,
+          'child'];
+
+  child = spawnSync(process.execPath, args, { cwd: tmpdir.path });
+  assert.notStrictEqual(child.status, 0, 'Process exited unexpectedly');
+  reports = helper.findReports(child.pid, tmpdir.path);
+  assert.strictEqual(reports.length, 0);
 }