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When using qc_stream_desc_ack(), the stream instance may be freed if there is no more data in its buffers. This also means that all frames still stored waiting for ACK for this stream are freed via qc_stream_desc_free(). This is particularly important in quic_stream_try_to_consume() where we loop over the frames tree of the stream. A use-after-free is present in cas the stream has been freed in the trace "stream consumed" which dereference the frame. Fix this by first checking if the stream has been freed or not. This bug was detected by using ASAN + quic traces enabled.
The HAProxy documentation has been split into a number of different files for ease of use. Please refer to the following files depending on what you're looking for : - INSTALL for instructions on how to build and install HAProxy - BRANCHES to understand the project's life cycle and what version to use - LICENSE for the project's license - CONTRIBUTING for the process to follow to submit contributions The more detailed documentation is located into the doc/ directory : - doc/intro.txt for a quick introduction on HAProxy - doc/configuration.txt for the configuration's reference manual - doc/lua.txt for the Lua's reference manual - doc/SPOE.txt for how to use the SPOE engine - doc/network-namespaces.txt for how to use network namespaces under Linux - doc/management.txt for the management guide - doc/regression-testing.txt for how to use the regression testing suite - doc/peers.txt for the peers protocol reference - doc/coding-style.txt for how to adopt HAProxy's coding style - doc/internals for developer-specific documentation (not all up to date)