diff --git a/test/fuzztest/faultloggerdserver/faultloggerdcoredump_fuzzer/faultloggerd_coredump_service_fuzzer.cpp b/test/fuzztest/faultloggerdserver/faultloggerdcoredump_fuzzer/faultloggerd_coredump_service_fuzzer.cpp
index 54519f22cc7cf215b0b3624d8ba5d8193d4a6642..324f9561d205ed4cfd427eae3a723787d7677dfc 100644
--- a/test/fuzztest/faultloggerdserver/faultloggerdcoredump_fuzzer/faultloggerd_coredump_service_fuzzer.cpp
+++ b/test/fuzztest/faultloggerdserver/faultloggerdcoredump_fuzzer/faultloggerd_coredump_service_fuzzer.cpp
@@ -25,17 +25,19 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
     if (data == nullptr) {
         return 0;
     }
-    if (size >= sizeof (CoreDumpRequestData)) {
-        CoreDumpRequestData requestData = *reinterpret_cast<const CoreDumpRequestData*>(data);
-        FillRequestHeadData(requestData.head, FaultLoggerClientType::COREDUMP_CLIENT);
-        SendRequestToServer({&requestData, sizeof(CoreDumpRequestData)});
+    if (size < sizeof (CoreDumpRequestData)) {
+        return 0;
     }
+    CoreDumpRequestData coredumpRequestData = *reinterpret_cast<const CoreDumpRequestData*>(data);
+    FillRequestHeadData(coredumpRequestData.head, FaultLoggerClientType::COREDUMP_CLIENT);
+    SendRequestToServer({&coredumpRequestData, sizeof(CoreDumpRequestData)});
 
-    if (size >= sizeof (CoreDumpStatusData)) {
-        CoreDumpStatusData requestData = *reinterpret_cast<const CoreDumpStatusData*>(data);
-        FillRequestHeadData(requestData.head, FaultLoggerClientType::COREDUMP_PROCESS_DUMP_CLIENT);
-        SendRequestToServer({&requestData, sizeof(CoreDumpStatusData)});
+    if (size < sizeof (CoreDumpStatusData)) {
+        return 0;
     }
+    CoreDumpStatusData coredumpStatusData = *reinterpret_cast<const CoreDumpStatusData*>(data);
+    FillRequestHeadData(coredumpStatusData.head, FaultLoggerClientType::COREDUMP_PROCESS_DUMP_CLIENT);
+    SendRequestToServer({&coredumpStatusData, sizeof(CoreDumpStatusData)});
 
     return 0;
 }
diff --git a/tools/crasher_c/dfx_crasher.c b/tools/crasher_c/dfx_crasher.c
index 16daa6f52c2520ac315568884d814fa46a84c403..985f5185702cb9492024f5bae51c638d2b33da79 100644
--- a/tools/crasher_c/dfx_crasher.c
+++ b/tools/crasher_c/dfx_crasher.c
@@ -161,21 +161,21 @@ NOINLINE int MaxMethodNameTest12345678901234567890123456789012345678901234567890
     return 0;
 }
 
-NOINLINE int StackOverflow(void)
+static int DoStackOverflow(int depth)
 {
-    printf("call StackOverflow\n");
-
     // for stack overflow test
-    char a[1024][1024][1024] = { { {'1'} } };
-    char b[1024][1024][1024] = { { {'1'} } };
-    char c[1024][1024][1024] = { { {'1'} } };
-    char d[1024][1024][1024] = { { {'1'} } };
-    printf("a[0][0] is %s\n", a[0][0]);
-    printf("b[0][0] is %s\n", b[0][0]);
-    printf("c[0][0] is %s\n", c[0][0]);
-    printf("d[0][0] is %s\n", d[0][0]);
+    char arr[1024][1024][1024] = { { {'1'} } };
+    printf("arr[0][0] is %s\n", arr[0][0]);
+    if (depth > 0xFFFF) {
+        return 0;
+    }
+    return DoStackOverflow(depth + 1);
+}
 
-    return 0;
+NOINLINE int StackOverflow(void)
+{
+    printf("call StackOverflow\n");
+    return DoStackOverflow(0);
 }
 
 NOINLINE int Oom(void)
diff --git a/tools/process_dump/coredump/coredump_config_manager.h b/tools/process_dump/coredump/coredump_config_manager.h
index 8b31a89b83c5731c5162db7a949826cf9c4e78a8..0c53044fe6a6f4af0d70459a870620a7ae6ce74f 100644
--- a/tools/process_dump/coredump/coredump_config_manager.h
+++ b/tools/process_dump/coredump/coredump_config_manager.h
@@ -45,7 +45,7 @@ struct LoadSegmentDumpConfig {
 };
 
 struct CoredumpConfig {
-    bool coredumpSwitch {true};
+    bool coredumpSwitch {false};
     size_t maxCoredumpSize {0};
     int dumperThreadCount {1};
     std::string outputPath {"/data/storage/el2/base/files"};