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tools lib traceevent: Fix kbuffer_read_at_offset()

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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 <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Namhyung Kim 2016-10-01 19:17:00 +09:00 • committed by Arnaldo Carvalho de Melo
commit a130347973
1 changed files with 1 additions and 0 deletions
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1
tools/lib/traceevent/kbuffer-parse.c
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@ -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);