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When the request data are copied in a mbuf, if the free space is too small to copy all data at once, the data length is shortened. When this is performed, we reserve the size of the STDIN recod header and eventually the same for the empty STDIN record if it is the last HTX block of the request. However, there is no test to be sure the free space is large enough. Thus, on this special case, when the mbuf is almost full, it is possible to overflow the value length. Because of this bug, it is possible to experience crashes from time to time. This patch should fix the issue #1923. It must be backported as far as 2.4.
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)