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9d4a44e713
If add_sample_to_logformat_list() fails to allocate new logformat_node,
then we directly jump to error_free label to cleanup the node using
free_logformat_node() before returning an error.
However if the node failed to allocate, then the sample expression that
was allocated just before (not yet assigned) isn't released
(free_logformat_node() is a no-op when NULL is provided). Thus if expr
wasn't assigned to the node during early failure, then it must be manually
released.
This bug was introduced by 2462e5bcc ("BUG/MINOR: log: fix potential
lf->name memory leak") which wasn't marked for backports. It only
affects 3.0.
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)