1 files changed, 14 insertions, 4 deletions
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index b6ccca943f2..8886a9d6bd0 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -834,9 +834,14 @@ lock_PyThread_acquire_lock(PyObject *op, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    PyLockStatus r = _PyMutex_LockTimed(&self->lock, timeout,
-                                        _PY_LOCK_HANDLE_SIGNALS | _PY_LOCK_DETACH);
+    PyLockStatus r = _PyMutex_LockTimed(
+        &self->lock, timeout,
+        _PY_LOCK_PYTHONLOCK | _PY_LOCK_HANDLE_SIGNALS | _PY_LOCK_DETACH);
     if (r == PY_LOCK_INTR) {
+        assert(PyErr_Occurred());
+        return NULL;
+    }
+    if (r == PY_LOCK_FAILURE && PyErr_Occurred()) {
         return NULL;
     }
 
@@ -1054,9 +1059,14 @@ rlock_acquire(PyObject *op, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    PyLockStatus r = _PyRecursiveMutex_LockTimed(&self->lock, timeout,
-                                                 _PY_LOCK_HANDLE_SIGNALS | _PY_LOCK_DETACH);
+    PyLockStatus r = _PyRecursiveMutex_LockTimed(
+        &self->lock, timeout,
+        _PY_LOCK_PYTHONLOCK | _PY_LOCK_HANDLE_SIGNALS | _PY_LOCK_DETACH);
     if (r == PY_LOCK_INTR) {
+        assert(PyErr_Occurred());
+        return NULL;
+    }
+    if (r == PY_LOCK_FAILURE && PyErr_Occurred()) {
         return NULL;
     }