diff --git a/source3/smbd/smb2_ioctl_filesys.c b/source3/smbd/smb2_ioctl_filesys.c
index 8a9c8c64ec9..a5d94de9b7e 100644
--- a/source3/smbd/smb2_ioctl_filesys.c
+++ b/source3/smbd/smb2_ioctl_filesys.c
@@ -795,6 +795,11 @@ struct tevent_req *smb2_ioctl_filesys(uint32_t ctl_code,
 		tevent_req_set_callback(subreq,
 					smb2_ioctl_filesys_dup_extents_done,
 					req);
+		/* Ensure any close request knows about this outstanding IO. */
+		if (!aio_add_req_to_fsp(state->fsp, req)) {
+			tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+			return tevent_req_post(req, ev);
+		}
 		return req;
 		break;
 	}
diff --git a/source3/smbd/smb2_ioctl_network_fs.c b/source3/smbd/smb2_ioctl_network_fs.c
index 8154fa3f92e..057251f2796 100644
--- a/source3/smbd/smb2_ioctl_network_fs.c
+++ b/source3/smbd/smb2_ioctl_network_fs.c
@@ -544,6 +544,11 @@ struct tevent_req *smb2_ioctl_network_fs(uint32_t ctl_code,
 		tevent_req_set_callback(subreq,
 					smb2_ioctl_network_fs_copychunk_done,
 					req);
+		/* Ensure any close request knows about this outstanding IO. */
+		if (!aio_add_req_to_fsp(state->fsp, req)) {
+			tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+			return tevent_req_post(req, ev);
+		}
 		return req;
 		break;
 	case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
@@ -592,6 +597,11 @@ struct tevent_req *smb2_ioctl_network_fs(uint32_t ctl_code,
 		}
 		tevent_req_set_callback(
 			subreq, smb2_ioctl_network_fs_offload_read_done, req);
+		/* Ensure any close request knows about this outstanding IO. */
+		if (!aio_add_req_to_fsp(state->fsp, req)) {
+			tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+			return tevent_req_post(req, ev);
+		}
 		return req;
 
 	default: {