diff -r 3bd979f09721 -r 74832e7b5cad src/hotspot/share/utilities/vmError.cpp
--- a/src/hotspot/share/utilities/vmError.cpp	Wed Jun 05 14:01:01 2019 -0400
+++ b/src/hotspot/share/utilities/vmError.cpp	Wed Jun 05 14:07:14 2019 -0400
@@ -406,12 +406,16 @@
   return Atomic::load(&_step_start_time);
 }
 
+void VMError::clear_step_start_time() {
+  return Atomic::store((jlong)0, &_step_start_time);
+}
+
 void VMError::report(outputStream* st, bool _verbose) {
 
 # define BEGIN if (_current_step == 0) { _current_step = __LINE__;
 # define STEP(s) } if (_current_step < __LINE__) { _current_step = __LINE__; _current_step_info = s; \
   record_step_start_time(); _step_did_timeout = false;
-# define END }
+# define END clear_step_start_time(); }
 
   // don't allocate large buffer on stack
   static char buf[O_BUFLEN];
@@ -451,6 +455,15 @@
   // Step to global timeout ratio is 4:1, so in order to be absolutely sure we hit the
   // global timeout, let's execute the timeout step five times.
   // See corresponding test in test/runtime/ErrorHandling/TimeoutInErrorHandlingTest.java
+  STEP("setup for test unresponsive error reporting step")
+    if (_verbose && TestUnresponsiveErrorHandler) {
+      // We record reporting_start_time for this test here because we
+      // care about the time spent executing TIMEOUT_TEST_STEP and not
+      // about the time it took us to get here.
+      tty->print_cr("Recording reporting_start_time for TestUnresponsiveErrorHandler.");
+      record_reporting_start_time();
+    }
+
   #define TIMEOUT_TEST_STEP STEP("test unresponsive error reporting step") \
     if (_verbose && TestUnresponsiveErrorHandler) { os::infinite_sleep(); }
   TIMEOUT_TEST_STEP
@@ -1358,7 +1371,14 @@
     _error_reported = true;
 
     reporting_started();
-    record_reporting_start_time();
+    if (!TestUnresponsiveErrorHandler) {
+      // Record reporting_start_time unless we're running the
+      // TestUnresponsiveErrorHandler test. For that test we record
+      // reporting_start_time at the beginning of the test.
+      record_reporting_start_time();
+    } else {
+      out.print_raw_cr("Delaying recording reporting_start_time for TestUnresponsiveErrorHandler.");
+    }
 
     if (ShowMessageBoxOnError || PauseAtExit) {
       show_message_box(buffer, sizeof(buffer));
@@ -1665,7 +1685,9 @@
   // Timestamp is stored in nanos.
   if (reporting_start_time_l > 0) {
     const jlong end = reporting_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR;
-    if (end <= now) {
+    if (end <= now && !_reporting_did_timeout) {
+      // We hit ErrorLogTimeout and we haven't interrupted the reporting
+      // thread yet.
       _reporting_did_timeout = true;
       interrupt_reporting_thread();
       return true; // global timeout
@@ -1678,7 +1700,9 @@
     // hang for some reason, so this simple rule allows for three hanging step and still
     // hopefully leaves time enough for the rest of the steps to finish.
     const jlong end = step_start_time_l + (jlong)ErrorLogTimeout * TIMESTAMP_TO_SECONDS_FACTOR / 4;
-    if (end <= now) {
+    if (end <= now && !_step_did_timeout) {
+      // The step timed out and we haven't interrupted the reporting
+      // thread yet.
       _step_did_timeout = true;
       interrupt_reporting_thread();
       return false; // (Not a global timeout)