perf tools: Use zfree to help detect use after free bugs

Several areas already used this technique, so do some audit to
consistently use it elsewhere.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-9sbere0kkplwe45ak6rk4a1f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 094c28ba2fae..0153435b8427 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -204,7 +204,7 @@ struct tracepoint_path *tracepoint_id_to_path(u64 config)
                                 }
                                 path->name = malloc(MAX_EVENT_LENGTH);
                                 if (!path->name) {
-                                        free(path->system);
+                                        zfree(&path->system);
                                         free(path);
                                         return NULL;
                                 }
@@ -236,8 +236,8 @@ struct tracepoint_path *tracepoint_name_to_path(const char *name)
         path->name = strdup(str+1);
 
         if (path->system == NULL || path->name == NULL) {
-                free(path->system);
-                free(path->name);
+                zfree(&path->system);
+                zfree(&path->name);
                 free(path);
                 path = NULL;
         }
@@ -917,7 +917,7 @@ int parse_events_terms(struct list_head *terms, const char *str)
         ret = parse_events__scanner(str, &data, PE_START_TERMS);
         if (!ret) {
                 list_splice(data.terms, terms);
-                free(data.terms);
+                zfree(&data.terms);
                 return 0;
         }