Win10 the monitor fence that opened from nthandle fail to signal by D3DKMTSignalSynchronizationObjectFromGpu2

Question

D3DKMTSignalSynchronizationObjectFromGpu2 fail to signal the opened monitor fence that opened from the nthandle return from D3DKMTCreateSynchronizationObject2, with return value 0xc0000022. here is the sample code.

//1. create nt shared monitor fence
D3DKMT_CREATESYNCHRONIZATIONOBJECT2 arg={0}
arg.hDevice = device_handle;
arg.Info.Type = D3DDDI_MONITORED_FENCE;
arg.Flags.Shared = 1;
arg.Flags.NtSecuritySharing = 1;
NTSTATUS ret = D3DKMTCreateSynchronizationObject2(arg);// ret is STATUS_SUCCESS



//2. get shared nt handle
HANDLE nt_handle = 0;
OBJECT_ATTRIBUTES objAttr = {};
objAttr.Length = sizeof(OBJECT_ATTRIBUTES);

NTSTATUS ret1 = D3DKMTShareObjects(1, &arg.hSyncObject, &objAttr, 
               DXGI_SHARED_RESOURCE_READ|DXGI_SHARED_RESOURCE_WRITE, &nt_handle);//ret1 is STATUS_SUCCESS


//3. duplicate a new_nt_handle from nt_handle.
HANDLE new_nt_handle = 0;
DuplicateHandle(GetCurrentProcess(), nt_handle, GetCurrentProcess(), 
             &new_nt_handle, 0, FALSE, DUPLICATE_SAME_ACCESS)


//4. open the duplicate new_nt_handle 
D3DKMT_OPENSYNCOBJECTFROMNTHANDLE2 arg2 = {0};
arg2.hDevice = device_handle;
arg2.hNtHandle = new_nt_handle;
arg2.Flags.Shared = 1;
arg2.Flags.NtSecuritySharing  = 1;
NTSTATUS ret2 = D3DKMTOpenSyncObjectFromNtHandle2(&arg2); //ret2 is STATUS_SUCCESS


//5. signale from gpu
D3DKMT_SIGNALSYNCHRONIZATIONOBJECT2 arg3 = {0};
arg3.ObjectCount = 1;
arg3.ObjectHandleArray = &new_nt_handle;
arg3.BroadcastContextCount = 1;
arg3.BroadcastContextArray = &context_handle;
arg3.MonitoredFenceValueArray = &MonitoredFenceValue;

NTSTATUS ret3 = D3DKMTSignalSynchronizationObjectFromGpu2(&arg3);//ret3 is 0xC0000022

anyone can figure out why the opened monitor fence can't be signal from D3DKMTSignalSynchronizationObjectFromGpu2, I do share it as read&write access.

Answer 1

replace DXGI_SHARED_RESOURCE_READ|DXGI_SHARED_RESOURCE_WRITE with D3DDDI_SYNC_OBJECT_ALL_ACCESS can pass