Python None objects are handled just like all the other objects with respect to their reference counting. Before returning Py_None, its reference count thus needs to be bumped.
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| @@ -1004,8 +1004,10 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, · 1003 unmodified lines | ||
| 1004 | 1004 | return PyErr_NoMemory(); |
| 1005 | 1005 | |
| 1006 | 1006 | evsel = perf_evlist__event2evsel(evlist, event); |
| 1007 | − if (!evsel) | |
| 1007 | + if (!evsel) { | |
| 1008 | + Py_INCREF(Py_None); | |
| 1008 | 1009 | return Py_None; |
| 1010 | + } | |
| 1009 | 1011 | |
| 1010 | 1012 | pevent->evsel = evsel; |
| 1011 | 1013 | |