diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index 2226281e8146..ff1a6a903463 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -1062,6 +1062,12 @@ static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep,
 	if (args->size == 0)
 		return -EINVAL;
 
+	if (p->context_id != KFD_CONTEXT_ID_PRIMARY && (flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR)) {
+		pr_debug("USERPTR is not supported on non-primary kfd_process\n");
+
+		return -EOPNOTSUPP;
+	}
+
 #if IS_ENABLED(CONFIG_HSA_AMD_SVM)
 	/* Flush pending deferred work to avoid racing with deferred actions
 	 * from previous memory map changes (e.g. munmap).