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


[ROCm/hip commit: c6904623aa]

projects/hip/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);