tools lib traceevent: Fix error path on pevent_parse_event

If __pevent_parse_format() succeeded but add_event() failed, 'ret' didn't
have a proper error code.  Set it to PEVENT_ERRNO__MEM_ALLOC_FAILED.

In addition, at that point 'event' also has fields and format
information and they all need to be freed.  Call pevent_free_format() to
handle it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1348575919-4954-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 17c922145e88..47264b4652b9 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -5044,8 +5044,10 @@ enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
         /* Add pevent to event so that it can be referenced */
         event->pevent = pevent;
 
-        if (add_event(pevent, event))
+        if (add_event(pevent, event)) {
+                ret = PEVENT_ERRNO__MEM_ALLOC_FAILED;
                 goto event_add_failed;
+        }
 
 #define PRINT_ARGS 0
         if (PRINT_ARGS && event->print_fmt.args)
@@ -5054,9 +5056,7 @@ enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
         return 0;
 
 event_add_failed:
-        free(event->system);
-        free(event->name);
-        free(event);
+        pevent_free_format(event);
         return ret;
 }