[PATCH 7/8] perf tools: Fix double free in perf_data__close

[Jiri Olsa]

We can't call perf_data__close and subsequently
perf_session__delete, because it will call
perf_data__close again and cause double free
for data->file.path.

  $ perf report -i .
  incompatible file format (rerun with -v to learn more)
  free(): double free detected in tcache 2
  Aborted (core dumped)

In fact we don't need to call perf_data__close
at all, because at the time the got out_close
is reached, session->data is already initialized,
so the perf_data__close call will be triggered
from perf_session__delete.

Fixes: 2d4f27999b88 ("perf data: Add global path holder")
Link: http://lkml.kernel.org/n/tip-2g1zaoxmgmaxbuz8yvopq32v@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 tools/perf/util/session.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index c764bbc91009..db643f3c2b95 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -140,7 +140,7 @@ struct perf_session *perf_session__new(struct perf_data *data,
 
 		if (perf_data__is_read(data)) {
 			if (perf_session__open(session) < 0)
-				goto out_close;
+				goto out_delete;
 
 			/*
 			 * set session attributes that are present in perf.data
@@ -181,8 +181,6 @@ struct perf_session *perf_session__new(struct perf_data *data,
 
 	return session;
 
- out_close:
-	perf_data__close(data);
  out_delete:
 	perf_session__delete(session);
  out:
-- 
2.17.2