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| author | Jiri Olsa <jolsa@kernel.org> | 2019-03-05 16:25:35 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-03-06 18:20:33 -0300 |
| commit | befa09b61f8bf1d7c34b8e6405f08d804640573c (patch) | |
| tree | e3dfd454a14d78b5872db51afd31b87691b2d796 /tools | |
| parent | 5b61adb16599be04346e7e943c1b5113b57485ad (diff) | |
| download | lwn-befa09b61f8bf1d7c34b8e6405f08d804640573c.tar.gz lwn-befa09b61f8bf1d7c34b8e6405f08d804640573c.zip | |
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>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/session.c | 4 |
1 files changed, 1 insertions, 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: |