Fix tests.

Lib/test/test_faulthandler.py

@@ -101,8 +101,7 @@ def check_error(self, code, lineno, fatal_error, *,
         Raise an error if the output doesn't match the expected format.
         """
         all_threads_disabled = (
-            (not py_fatal_error)
-            and all_threads
+            all_threads
             and (not sys._is_gil_enabled())
         )
         if all_threads and not all_threads_disabled:
@@ -116,12 +115,15 @@ def check_error(self, code, lineno, fatal_error, *,
         if py_fatal_error:
             regex.append("Python runtime state: initialized")
         regex.append('')
-        if all_threads_disabled:
+        if all_threads_disabled and not py_fatal_error:
             regex.append("<Cannot show all threads while the GIL is disabled>")
         regex.append(fr'{header} \(most recent call first\):')
-        if garbage_collecting and not all_threads_disabled:
-            regex.append('  Garbage-collecting')
-        regex.append(fr'  File "<string>", line {lineno} in {function}')
+        if py_fatal_error and not know_current_thread:
+            regex.append("  <tstate is freed>")
+        else:
+            if garbage_collecting and not all_threads_disabled:
+                regex.append('  Garbage-collecting')
+            regex.append(fr'  File "<string>", line {lineno} in {function}')
         regex = '\n'.join(regex)
 
         if other_regex:

Python/pylifecycle.c

@@ -3026,13 +3026,6 @@ _Py_FatalError_DumpTracebacks(int fd, PyInterpreterState *interp,
 #ifndef Py_GIL_DISABLED
     _Py_DumpTracebackThreads(fd, interp, tstate);
 #else
-    if (tstate == NULL)
-    {
-        /* _Py_DumpTraceback() prints out a message when tstate is null,
-         * whereas _Py_DumpTracebackThreads() does not. Early-return for
-         * consistency. */
-        return;
-    }
     _Py_DumpTraceback(fd, tstate);
 #endif
 }