ext_proc filter fuzzer crashed when test cases contains regex config (#…

…27301) Envoy ext_proc filter fuzzer run crashed when test cases contains regex config. Signed-off-by: Yanjun Xiang <yanjunxiang@google.com>
envoyproxy · May 10, 2023 · fb0f337 · fb0f337
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commit fb0f337
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diff --git a/...tp/ext_proc/unit_test_fuzz/ext_proc_corpus/crash-2f5c31257230464b4b6015ecee3f6f090547fb0a b/...tp/ext_proc/unit_test_fuzz/ext_proc_corpus/crash-2f5c31257230464b4b6015ecee3f6f090547fb0a
diff --git a/test/extensions/filters/http/ext_proc/unit_test_fuzz/ext_proc_unit_test_fuzz.cc b/test/extensions/filters/http/ext_proc/unit_test_fuzz/ext_proc_unit_test_fuzz.cc
@@ -51,6 +51,11 @@ DEFINE_PROTO_FUZZER(
       input.config();
   ExternalProcessing::FilterConfigSharedPtr config;
 
+  // Create regex engine which is used by regex matcher code.
+  Regex::EnginePtr regex_engine = std::make_shared<Regex::GoogleReEngine>();
+  Regex::EngineSingleton::clear();
+  Regex::EngineSingleton::initialize(regex_engine.get());
+
   try {
     config = std::make_shared<ExternalProcessing::FilterConfig>(
         proto_config, std::chrono::milliseconds(200), 200, *stats_store.rootScope(),