Fix a seg fault when unallocated mem handle passed to hipIpcOpenMemHandle API

also validate the flag argument passed to hipIpcOpenMemHandle API and return
error if it is not equal to "hipIpcMemLazyEnablePeerAccess" (defined to 0)
and it is the only supported flag currenlty for this API.

SWDEV-253462

Change-Id: Ie1c8b79c680a29dc72bf262cf53ae5e011fb1247

rocclr/hip_memory.cpp

@@ -1970,7 +1970,7 @@ hipError_t hipIpcOpenMemHandle(void** dev_ptr, hipIpcMemHandle_t handle, unsigne
   amd::Device* device = nullptr;
   ihipIpcMemHandle_t* ihandle = nullptr;
 
-  if (dev_ptr == nullptr) {
+  if (dev_ptr == nullptr || flags != hipIpcMemLazyEnablePeerAccess) {
     HIP_RETURN(hipErrorInvalidValue);
   }
 
@@ -1978,6 +1978,10 @@ hipError_t hipIpcOpenMemHandle(void** dev_ptr, hipIpcMemHandle_t handle, unsigne
   device = hip::getCurrentDevice()->devices()[0];
   ihandle = reinterpret_cast<ihipIpcMemHandle_t *>(&handle);
 
+  if (ihandle->psize == 0) {
+    HIP_RETURN(hipErrorInvalidValue);
+  }
+
   if(!device->IpcAttach(&(ihandle->ipc_handle), ihandle->psize, flags, dev_ptr)) {
     DevLogPrintfError("cannot attach ipc_handle: with ipc_size: %u flags: %u", ihandle->psize, flags);
     HIP_RETURN(hipErrorInvalidDevicePointer);