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Imagine receiving the signal for an available TX ack or an available RX packet at the Uplink connection but a later received signal for a link-state change (to link state "down") at the same connection is handled first and destructs the Uplink connection before the handling of the former signals. In this case, the methods 'Uplink_client_base::_conn_tx_handle_ack_avail' and 'Uplink_client_base::_conn_rx_handle_packet_avail' must be guarded against an unconstructed '_conn' member, but they weren't so far. Fixes #4384
This source-code repository contains genuine low-level OS components and interfaces of Genode. It solely depends on the framework's base API.