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qc_init() is used to initialize a QUIC MUX instance. On failure, each resources are released via a series of goto statements. There is one issue if the app_ops.init callback fails. In this case, MUX task is not freed. This can cause a crash as the task is already scheduled. When the handler will run, it will crash when trying to access qcc instance. To fix this, properly destroy qcc task on fail_install_app_ops label. The impact of this bug is minor as app_ops.init callback succeeds most of the time. However, it may fail on allocation failure due to memory exhaustion. This may fix github issue #2154. This must be backported up to 2.7.
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)