perf python: Reference Py_None before returning it
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. Signed-off-by: Petr Machata <petrm@mellanox.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Machata <petrm@mellanox.com> Link: http://lkml.kernel.org/r/b1e565ecccf68064d8d54f37db5d028dda8fa522.1521675563.git.petrm@mellanox.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -1004,8 +1004,10 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist,
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return PyErr_NoMemory();
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evsel = perf_evlist__event2evsel(evlist, event);
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if (!evsel)
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if (!evsel) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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pevent->evsel = evsel;
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