[PATCH v1 12/13] perf python: Add thread uninitialized checks

[Ian Rogers <irogers@google.com>]

Add CHECK_INITIALIZED checks to the thread attribute getters
(get_pid, get_tid, get_ppid) to prevent crashes if they are accessed
before being properly initialized.

Fixes: 3b96bf7af60d ("perf python: Add python session abstraction wrapping perf's session")
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/python.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
index 03b4e8809107..70f985ad3dd2 100644
--- a/tools/perf/util/python.c
+++ b/tools/perf/util/python.c
@@ -3743,16 +3743,19 @@ static PyMethodDef pyrf_thread__methods[] = {
 
 static PyObject *pyrf_thread__get_pid(struct pyrf_thread *pthread, void *closure __maybe_unused)
 {
+	CHECK_INITIALIZED(pthread->thread, "thread");
 	return PyLong_FromLong(thread__pid(pthread->thread));
 }
 
 static PyObject *pyrf_thread__get_tid(struct pyrf_thread *pthread, void *closure __maybe_unused)
 {
+	CHECK_INITIALIZED(pthread->thread, "thread");
 	return PyLong_FromLong(thread__tid(pthread->thread));
 }
 
 static PyObject *pyrf_thread__get_ppid(struct pyrf_thread *pthread, void *closure __maybe_unused)
 {
+	CHECK_INITIALIZED(pthread->thread, "thread");
 	return PyLong_FromLong(thread__ppid(pthread->thread));
 }
 
-- 
2.55.0.rc0.786.g65d90a0328-goog