perf data: Force perf_data__open|close zero data->file.path

Making sure the data->file.path is zeroed on perf_data__open error path
and in perf_data__close, so we don't double free it in case someone call
it twice.

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>
Link: http://lkml.kernel.org/r/20190305152536.21035-9-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index 7bd5ddeb7a411595133d85728698b98fc6836359..e098e189f93e45e0217bb07758fab03f543a45c0 100644 (file)
--- a/tools/perf/util/data.c
+++ b/tools/perf/util/data.c
@@ -237,7 +237,7 @@ static int open_file(struct perf_data *data)
             open_file_read(data) : open_file_write(data);
 
        if (fd < 0) {
-               free(data->file.path);
+               zfree(&data->file.path);
                return -1;
        }
 
@@ -270,7 +270,7 @@ int perf_data__open(struct perf_data *data)
 
 void perf_data__close(struct perf_data *data)
 {
-       free(data->file.path);
+       zfree(&data->file.path);
        close(data->file.fd);
 }