1 files changed, 13 insertions, 2 deletions
diff --git a/src/vm/eventpipeinternal.cpp b/src/vm/eventpipeinternal.cpp
index 17efeb39e6..9291d6b228 100644
--- a/src/vm/eventpipeinternal.cpp
+++ b/src/vm/eventpipeinternal.cpp
@@ -20,7 +20,7 @@
 UINT64 QCALLTYPE EventPipeInternal::Enable(
     __in_z LPCWSTR outputFile,
     UINT32 circularBufferSizeInMB,
-    INT64 profilerSamplingRateInNanoseconds,
+    UINT64 profilerSamplingRateInNanoseconds,
     EventPipeProviderConfiguration *pProviders,
     UINT32 numProviders)
 {
@@ -28,6 +28,15 @@ UINT64 QCALLTYPE EventPipeInternal::Enable(
 
     UINT64 sessionID = 0;
 
+    // Invalid input!
+    if (circularBufferSizeInMB == 0 ||
+        profilerSamplingRateInNanoseconds == 0 ||
+        numProviders == 0 ||
+        pProviders == nullptr)
+    {
+        return 0;
+    }
+
     BEGIN_QCALL;
     {
         sessionID = EventPipe::Enable(
@@ -35,7 +44,9 @@ UINT64 QCALLTYPE EventPipeInternal::Enable(
             circularBufferSizeInMB,
             profilerSamplingRateInNanoseconds,
             pProviders,
-            numProviders);
+            numProviders,
+            outputFile != NULL ? EventPipeSessionType::File : EventPipeSessionType::Streaming,
+            nullptr);
     }
     END_QCALL;