From: Petr Machata <[email protected]> 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 <[email protected]> Acked-by: Jiri Olsa <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Petr Machata <[email protected]> Link: http://lkml.kernel.org/r/b1e565ecccf68064d8d54f37db5d028dda8fa522.1521675563.git.pe...@mellanox.com Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/python.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index b956868fd445..863b61478edd 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -1004,8 +1004,10 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, return PyErr_NoMemory(); evsel = perf_evlist__event2evsel(evlist, event); - if (!evsel) + if (!evsel) { + Py_INCREF(Py_None); return Py_None; + } pevent->evsel = evsel; -- 2.14.3
