tools lib traceevent: Get rid of malloc_or_die() in show_error()

Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1386833777-3790-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/lib/traceevent/parse-filter.c

@@ -56,7 +56,21 @@ static void show_error(char **error_str, const char *fmt, ...)
 	index = pevent_get_input_buf_ptr();
 	len = input ? strlen(input) : 0;
 
-	error = malloc_or_die(MAX_ERR_STR_SIZE + (len*2) + 3);
+	error = malloc(MAX_ERR_STR_SIZE + (len*2) + 3);
+	if (error == NULL) {
+		/*
+		 * Maybe it's due to len is too long.
+		 * Retry without the input buffer part.
+		 */
+		len = 0;
+
+		error = malloc(MAX_ERR_STR_SIZE);
+		if (error == NULL) {
+			/* no memory */
+			*error_str = NULL;
+			return;
+		}
+	}
 
 	if (len) {
 		strcpy(error, input);