Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 34/35] perf session: Fix double free in perf_data__close | Date | Thu, 7 Mar 2019 14:44:32 -0300 |
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From: Jiri Olsa <jolsa@kernel.org>
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 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: -- 2.20.1
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