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 <namhy...@kernel.org>
---
 tools/lib/traceevent/event-parse.c |    8 ++++----
 1 file 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;
 }
 
-- 
1.7.9.2

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