[fuzzer] Limit parser_fuzzer execution time (#6431)

Limit the length of the fuzzer input to 16384 characters to prevent timeout
in JSON parser (Vector of tables with key).

Related oss-fuzz issues:
- 5742497110294528

diff --git a/tests/fuzzer/flatbuffers_monster_fuzzer.cc b/tests/fuzzer/flatbuffers_monster_fuzzer.cc
index 5702189..1609c71 100644 (file)
--- a/tests/fuzzer/flatbuffers_monster_fuzzer.cc
+++ b/tests/fuzzer/flatbuffers_monster_fuzzer.cc
@@ -35,7 +35,7 @@ static fs::path exe_path_;
 namespace {
 
 static constexpr size_t kMinInputLength = 1;
-static constexpr size_t kMaxInputLength = 99000;
+static constexpr size_t kMaxInputLength = 16384;
 
 static constexpr uint8_t flags_strict_json = 0x80;
 static constexpr uint8_t flags_skip_unexpected_fields_in_json = 0x40;

diff --git a/tests/fuzzer/flatbuffers_parser_fuzzer.cc b/tests/fuzzer/flatbuffers_parser_fuzzer.cc
index d4bbb0e..0b74f2c 100644 (file)
--- a/tests/fuzzer/flatbuffers_parser_fuzzer.cc
+++ b/tests/fuzzer/flatbuffers_parser_fuzzer.cc
@@ -10,7 +10,7 @@
 #include "test_init.h"
 
 static constexpr size_t kMinInputLength = 1;
-static constexpr size_t kMaxInputLength = 33000;
+static constexpr size_t kMaxInputLength = 16384;
 
 static constexpr uint8_t flags_strict_json = 0x80;
 static constexpr uint8_t flags_skip_unexpected_fields_in_json = 0x40;