diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index f98b6b3a28042a76538d2a670fd22b9aacaf184d..0c05b8a9980646adcf61c8cbc13355b535334f72 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -371,6 +371,9 @@ static struct hist_field *create_hist_field(struct ftrace_event_field *field, goto out; } + if (WARN_ON_ONCE(!field)) + goto out; + if (is_string_field(field)) { flags |= HIST_FIELD_FL_STRING;