From: Arnaldo Carvalho de Melo Date: Wed, 12 Mar 2025 20:31:39 +0000 (-0300) Subject: perf python: Decrement the refcount of just created event on failure X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3de5a2bf5b4847f7a59a184568f969f8fe05d57f;p=users%2Fjedix%2Flinux-maple.git perf python: Decrement the refcount of just created event on failure To avoid a leak if we have the python object but then something happens and we need to return the operation, decrement the offset of the newly created object. Fixes: 377f698db12150a1 ("perf python: Add struct evsel into struct pyrf_event") Signed-off-by: Arnaldo Carvalho de Melo Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20250312203141.285263-5-acme@kernel.org Signed-off-by: Namhyung Kim --- diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index f9491b6699764..31a877a8eb8fb 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -1012,6 +1012,7 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, evsel = evlist__event2evsel(evlist, event); if (!evsel) { + Py_DECREF(pyevent); Py_INCREF(Py_None); return Py_None; } @@ -1023,9 +1024,12 @@ static PyObject *pyrf_evlist__read_on_cpu(struct pyrf_evlist *pevlist, /* Consume the even only after we parsed it out. */ perf_mmap__consume(&md->core); - if (err) + if (err) { + Py_DECREF(pyevent); return PyErr_Format(PyExc_OSError, "perf: can't parse sample, err=%d", err); + } + return pyevent; } end: