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HAProxy - Load balancer
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Willy Tarreau bff005ae58 BUG/MEDIUM: queue: fix the tree walk in pendconn_redistribute. 
In pendconn_redistribute() we scan the queue using eb32_next() on the
node we've just deleted, which is wrong since the node is not in the
tree anymore, and it could dereference one node that has already been
released by another thread. Note that we cannot use eb32_first() in the
loop here instead because we need to skip pendconns having SF_FORCE_PRST.
Instead, let's keep a copy of the next node before deleting it.

In addition, the pendconn retrieved there is wrong, it uses &node as
the pointer instead of node, resulting in very quick crashes when the
server list is scanned.

Fortunately this only happens when "option redispatch" is used in
conjunction with "maxconn" on server lines, "cookie" for the stickiness,
and when a server goes down with entries in its queue.

This bug was introduced by commit 0355dabd7 ("MINOR: queue: replace
the linked list with a tree") so the fix must be backported to 1.9.
2019-05-27 10:29:59 +02:00
.github/ISSUE_TEMPLATE DOC: add github issue templates 2019-01-17 22:53:55 +01:00
contrib CONTRIB: wurfl: address 3 build issues in the wurfl dummy library 2019-05-22 14:59:08 +02:00
doc DOC: fix typos 2019-05-25 07:34:24 +02:00
ebtree CLEANUP: fix typos in comments in ebtree 2018-11-18 22:23:15 +01:00
examples [RELEASE] Released version 2.0-dev4 2019-05-22 20:48:33 +02:00
include MINOR: cli/activity: add 3 general purpose counters in development mode 2019-05-27 07:03:38 +02:00
reg-tests REGTEST: extend the check duration on tls_health_checks and mark it slow 2019-05-17 17:16:20 +02:00
scripts DOC: fix "successful" typo 2019-05-18 08:25:29 +02:00
src BUG/MEDIUM: queue: fix the tree walk in pendconn_redistribute. 2019-05-27 10:29:59 +02:00
tests CLEANUP: fix a misspell in tests/filltab25.c 2018-11-18 22:23:15 +01:00
.cirrus.yml BUILD: enable freebsd builds on cirrus-ci 2019-05-16 09:27:51 +02:00
.gitignore DOC: split the README into README + INSTALL 2018-12-16 22:30:57 +01:00
.travis.yml BUILD: travis: add sanitizers to travis-ci builds 2019-05-22 17:17:15 +02:00
CHANGELOG [RELEASE] Released version 2.0-dev4 2019-05-22 20:48:33 +02:00
CONTRIBUTING DOC: Fix typos in README and CONTRIBUTING 2018-11-12 08:54:12 +01:00
INSTALL Revert "CLEANUP: wurfl: remove dead, broken and unmaintained code" 2019-04-23 10:34:43 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS DOC: wurfl: added point of contact in MAINTAINERS file 2019-04-23 11:00:23 +02:00
Makefile CLEANUP: raw_sock: remove support for very old linux splice bug workaround 2019-05-22 20:02:15 +02:00
README DOC: split the README into README + INSTALL 2018-12-16 22:30:57 +01:00
ROADMAP DOC: update the roadmap about priority queues 2018-08-10 17:12:04 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.0-dev4 2019-05-22 20:48:33 +02:00
VERSION [RELEASE] Released version 2.0-dev4 2019-05-22 20:48:33 +02:00

README 

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
  - 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)