1 files changed, 62 insertions, 0 deletions
diff --git a/fluent-bit/tests/internal/fuzzers/filter_stdout_fuzzer.c b/fluent-bit/tests/internal/fuzzers/filter_stdout_fuzzer.c
new file mode 100644
index 00000000..ed9a3f49
--- /dev/null
+++ b/fluent-bit/tests/internal/fuzzers/filter_stdout_fuzzer.c
@@ -0,0 +1,62 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+
+/*  Fluent Bit
+ *  ==========
+ *  Copyright (C) 2015-2022 The Fluent Bit Authors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include <stdint.h>
+#include <fluent-bit.h>
+#include "flb_fuzz_header.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    int ret;
+    flb_ctx_t *ctx;
+    int in_ffd;
+    int out_ffd;
+
+    /* Set fuzzer-malloc chance of failure */
+    flb_malloc_p = 0;
+    flb_malloc_mod = 25000;
+
+
+    ctx = flb_create();
+    flb_service_set(ctx, "Flush", "1", "Grace", "1", "Log_Level", "error", NULL);
+    in_ffd = flb_input(ctx, (char *) "lib", NULL);
+    if (in_ffd >= 0) {
+        flb_input_set(ctx, in_ffd, "tag", "test", NULL);
+
+        out_ffd = flb_output(ctx, (char *) "stdout", NULL);
+        if (out_ffd >= 0) {
+            flb_output_set(ctx, out_ffd, "match", "test", NULL);
+
+            ret = flb_start(ctx);
+            if (ret == 0) {
+                char *p = get_null_terminated(size, &data, &size);
+                for (int i = 0; i < strlen(p); i++) {
+                    flb_lib_push(ctx, in_ffd, p+i, 1);
+                }
+                free(p);
+
+                sleep(1); /* waiting flush */
+            }
+        }
+    }
+    flb_stop(ctx);
+    flb_destroy(ctx);
+
+    return 0;
+}