Commit-ID: a130347973c408c0e0017a52c74cbc3226c1f0ef
Gitweb: http://git.kernel.org/tip/a130347973c408c0e0017a52c74cbc3226c1f0ef
Author: Namhyung Kim <namhyung@xxxxxxxxxx>
AuthorDate: Sat, 1 Oct 2016 19:17:00 +0900
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Wed, 5 Oct 2016 11:36:22 -0300
tools lib traceevent: Fix kbuffer_read_at_offset()
When it's called with an offset less than or equal to the first event,
it'll return a garbage value since the data is not initialized.
Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20161001101700.29146-1-namhyung@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/lib/traceevent/kbuffer-parse.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/lib/traceevent/kbuffer-parse.c b/tools/lib/traceevent/kbuffer-parse.c
index 3bcada3..65984f1 100644
--- a/tools/lib/traceevent/kbuffer-parse.c
+++ b/tools/lib/traceevent/kbuffer-parse.c
@@ -622,6 +622,7 @@ void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset,
/* Reset the buffer */
kbuffer_load_subbuffer(kbuf, kbuf->subbuffer);
+ data = kbuffer_read_event(kbuf, ts);
while (kbuf->curr < offset) {
data = kbuffer_next_event(kbuf, ts);
--
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