HAProxy - Load balancer
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Aurelien DARRAGON 7428adaf0d BUG/MINOR: hlua: SET_SAFE_LJMP misuse in hlua_event_runner()
When hlua_event_runner() pauses the subscription (ie: if the consumer
can't keep up the pace), hlua_traceback() is used to get the current
lua trace (running context) to provide some info to the user.

However, as hlua_traceback() may raise an error (__LJMP) is set, it is
used within a SET_SAFE_LJMP() / RESET_SAFE_LJMP() combination to ensure
lua errors are properly handled and don't result in unexpected behavior.

But the current usage of SET_SAFE_LJMP() within the function is wrong
since hlua_traceback() will run a second time (unprotected) if the
first (protected) attempt fails. This is undefined behavior and could
even lead to crashes.

Hopefully it is very hard to trigger this code path, thus we can consider
this as a minor bug.

Also using this as an opportunity to enhance the message report to make
it more meaningful to the user.

This should fix GH #2159.

It is a 2.8 specific bug, no backport needed unless c84899c636
("MEDIUM: hlua/event_hdl: initial support for event handlers") gets
backported.
2023-05-17 16:48:40 +02:00
.github CI: drop Fedora m32 pipeline in favour of cross matrix 2023-05-17 14:57:10 +02:00
addons MINOR: tree-wide: use free_acl_cond() where relevant 2023-05-11 15:37:04 +02:00
admin MINOR: acme.sh: add the deploy script for acme.sh in admin directory 2023-04-26 17:32:15 +02:00
dev DEV: flags/show-sess-to-flags: add support for color output 2023-05-10 17:48:00 +02:00
doc DOC: config: Clarify conditions to shorten the inspect-delay for TCP rules 2023-05-17 09:21:01 +02:00
examples EXAMPLES: fix race condition in lua mailers script 2023-05-12 09:45:30 +02:00
include MINOR: clock: provide a function to automatically adjust now_offset 2023-05-17 09:33:54 +02:00
reg-tests REGTESTS: log: Reduce again response inspect-delay for last_rule.vtc 2023-05-17 11:12:25 +02:00
scripts BUILD: ssl: switch LibreSSL to Fastly CDN 2023-04-26 18:41:03 +02:00
src BUG/MINOR: hlua: SET_SAFE_LJMP misuse in hlua_event_runner() 2023-05-17 16:48:40 +02:00
tests TESTS: add a unit test for one_among_mask() 2022-06-21 20:29:57 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 13-1 2023-04-23 09:44:53 +02:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore CLEANUP: exclude udp-perturb with .gitignore 2022-09-16 15:47:04 +02:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml CI: travis-ci: temporarily disable arm64 builds 2021-08-07 07:28:15 +02:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
CHANGELOG [RELEASE] Released version 2.8-dev11 2023-05-11 05:33:21 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL DOC: fix a few reported typos in the config and install doc 2023-05-07 07:10:55 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS CLEANUP: assorted typo fixes in the code and comments 2022-11-30 14:02:36 +01:00
Makefile BUG/MINOR: makefile: use USE_LIBATOMIC instead of USE_ATOMIC 2023-05-15 16:08:03 +02:00
README DOC: create a BRANCHES file to explain the life cycle 2019-06-15 22:00:14 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 2.8-dev11 2023-05-11 05:33:21 +02:00
VERSION [RELEASE] Released version 2.8-dev11 2023-05-11 05:33:21 +02:00

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)