[PATCH] perf script: Fix a NULL pointer dereference

Namhyung Kim
2012-08-14T02:03:48Z

From: Namhyung Kim <namhyung.kim@lge.com>

If 'perf script --gen-script' was called with a perf.data which
contains no tracepoint event, it'd segfault due to NULL pevent
pointer. Fix it.

Cc: Feng Tang <feng.tang@intel.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/util/trace-event-parse.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c
index 4cb7f3831f78..a5a554efeb50 100644
--- a/tools/perf/util/trace-event-parse.c
+++ b/tools/perf/util/trace-event-parse.c
@@ -293,7 +293,7 @@ struct event_format *trace_find_next_event(struct pevent *pevent,
{
static int idx;

- if (!pevent->events)
+ if (!pevent || !pevent->events)
return NULL;

if (!event) {
--
1.7.11.2