Re: [PATCH] tools lib traceevent: Fix kbuffer_read_at_offset()

[Arnaldo Carvalho de Melo]

Em Sat, Oct 01, 2016 at 07:17:00PM +0900, Namhyung Kim escreveu:
> 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.

Steven, Ack?

- Arnaldo
 
> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
> Signed-off-by: Namhyung Kim <namhyung@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 3bcada3ae05a..65984f1c2974 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);
> -- 
> 2.10.0