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authorTzvetomir Stoyanov <tstoyanov@vmware.com>2018-11-28 14:55:52 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-12-17 14:55:19 -0300
commit44e92f8389b2242efde77d5321ffa88decd47df6 (patch)
tree6701602f671f8ef1115c1163406d0aa9722fdfb7 /tools/lib
parenta1c8cf293d57cb7c952b667805441b9fbb9c640a (diff)
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@vmware.com> Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/20181128145552.68c4f87b@gandalf.local.home Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/traceevent/event-parse.c2
1 files changed, 1 insertions, 1 deletions
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")