Crashes with hooked GetQueuedCompletionStatus

Question

i'm hooking GetQueuedCompletionStatus function with code below:

// hook code
typedef BOOL (__stdcall * MyGetQueuedCompletionStatus)(
  _In_  HANDLE       CompletionPort,
  _Out_ LPDWORD      lpNumberOfBytes,
  _Out_ PULONG_PTR   lpCompletionKey,
  _Out_ LPOVERLAPPED *lpOverlapped,
  _In_  DWORD        dwMilliseconds
);

static BOOL __stdcall OwnGetQueuedCompletionStatus(
    __in  HANDLE CompletionPort,
    __out LPDWORD lpNumberOfBytesTransferred,
    __out PULONG_PTR lpCompletionKey,
    __out LPOVERLAPPED *lpOverlapped,
    __in  DWORD dwMilliseconds
    );    

int hook()
{
    LPVOID fnOrigGetQueuedCompletionStatus = ::GetProcAddress(LoadLibrary("kernel32.dll"),  "GetQueuedCompletionStatus");
    DWORD dwOsErr = cHookMgr.Hook(&nHookId, (LPVOID*)&(Information::Instance().pTrampolineGetQueuedCompletionStatus), fnOrigGetQueuedCompletionStatus, OwnGetQueuedCompletionStatus);
}

static BOOL __stdcall OwnGetQueuedCompletionStatus(
    __in  HANDLE CompletionPort,
    __out LPDWORD lpNumberOfBytesTransferred,
    __out PULONG_PTR lpCompletionKey,
    __out LPOVERLAPPED *lpOverlapped,
    __in  DWORD dwMilliseconds
    )
{
    return Information::Instance().pTrampolineGetQueuedCompletionStatus(CompletionPort, lpNumberOfBytesTransferred, lpCompletionKey, lpOverlapped, dwMilliseconds);
}

As you can see, fake function does nothing but i always have crashes when hooking app use it:

Problem Event Name: BEX64
Application Name: MainServer.exe
Application Timestamp: 575f98b7
Fault Module Name: test64.dll_unloaded
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 585af544
Exception Offset: 00000000000025a0
Exception Code: c0000005 Exception Data: 0000000000000008

Other hooked functions work well. How can i fix that?