A NULL pointer can be returned when reading from the 'hist' file
of the event. This may happen if the histogram is not initialized.
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@xxxxxxxxx>
---
src/ftracepy-utils.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/ftracepy-utils.c b/src/ftracepy-utils.c
index a735d88..1b1f350 100644
--- a/src/ftracepy-utils.c
+++ b/src/ftracepy-utils.c
@@ -978,6 +978,9 @@ PyObject *PyTraceHist_read(PyTraceHist *self, PyObject *args,
PyObject *kwargs)
{
char *data = hist_read(self, args, kwargs);
+ if (!data)
+ return NULL;
+
PyObject *ret = PyUnicode_FromString(data);
free(data);
--
2.32.0
|