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diff --git a/‎MySQLdb/_mysql.c
Copy file name to clipboardExpand all lines: MySQLdb/_mysql.c
+8-2Lines changed: 8 additions & 2 deletions b/‎MySQLdb/_mysql.c
Copy file name to clipboardExpand all lines: MySQLdb/_mysql.c
+8-2Lines changed: 8 additions & 2 deletions
@@ -1373,9 +1373,15 @@ _mysql_ResultObject_fetch_row(
     convert_row = row_converters[how];
     if (maxrows) {
         if (!(r = PyTuple_New(maxrows))) goto error;
-        rowsadded = _mysql__fetch_row(self, &r, skiprows, maxrows,
-                convert_row);
+
+        // see: https://docs.python.org/3/library/gc.html#gc.get_referrers
+        // This function can get a reference to the tuple r, and if that
+        // code is preempted while holding a ref to r, the _PyTuple_Resize
+        // will raise a SystemError because the ref count is 2.
+        PyObject_GC_UnTrack(r);
+        rowsadded = _mysql__fetch_row(self, &r, skiprows, maxrows, convert_row);
         if (rowsadded == -1) goto error;
+        PyObject_GC_Track(r);
     } else {
         if (self->use) {
             maxrows = 1000;