From befa09b61f8bf1d7c34b8e6405f08d804640573c Mon Sep 17 00:00:00 2001
From: Jiri Olsa <jolsa@kernel.org>
Date: Tue, 5 Mar 2019 16:25:35 +0100
Subject: [PATCH] perf session: Fix double free in perf_data__close
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.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Cc: Nageswara R Sastry <nasastry@in.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Fixes: 2d4f27999b88 ("perf data: Add global path holder")
Link: http://lkml.kernel.org/r/20190305152536.21035-8-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
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 c764bbc910095..db643f3c2b954 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:
--
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