Commit-ID: 51d0337d01985d0cccb6e41f976cc0dbe921fd84
Gitweb: https://git.kernel.org/tip/51d0337d01985d0cccb6e41f976cc0dbe921fd84
Author: Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx>
AuthorDate: Wed, 28 Nov 2018 14:55:52 -0500
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 29 Nov 2018 20:42:50 -0300
tools lib traceevent: Add sanity check to is_timestamp_in_us()
This patch adds a sanity check to is_timestamp_in_us() input parameter
trace_clock. It avoids a potential segfault in this function for the
case trace_clock is NULL.
Reported-by: Slavomir Kaslev <kaslevs@xxxxxxxxxx>
Signed-off-by: Tzvetomir Stoyanov <tstoyanov@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20181128145552.68c4f87b@xxxxxxxxxxxxxxxxxx
Signed-off-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx>
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/traceevent/event-parse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index fbd6d6813fab..2b5cb33046ce 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5409,7 +5409,7 @@ void tep_event_info(struct trace_seq *s, struct tep_event_format *event,
static bool is_timestamp_in_us(char *trace_clock, bool use_trace_clock)
{
- if (!use_trace_clock)
+ if (!trace_clock || !use_trace_clock)
return true;
if (!strcmp(trace_clock, "local") || !strcmp(trace_clock, "global")
|