HAProxy - Load balancer
Find a file
Amaury Denoyelle 737d10fac1 BUG/MEDIUM: dns: ensure ring offset is properly reajusted to head
Since the below patch, ring offset calculation for readers has changed.
  commit d9c7188633
  MEDIUM: ring: make the offset relative to the head/tail instead of absolute

For readers, this requires to adjust their offsets to be relative to the
ring head each time read is resumed. Indeed, buffer head can change any
time a ring_write() is performed after older entries were purged.
This operation was not performed on the DNS code which causes the offset
to become invalid. In most cases, the following BUG_ON() was triggered :

  FATAL: bug condition "msg_len + ofs + cnt + 1 > b_data(buf)" matched
  at src/dns.c:522

Fix this by adjusting DNS reader offsets when entering
dns_session_io_handler() and dns_process_req().

This bug was reproduced by using a backend with 10 servers using SRV
record resolution on a single resolvers section. A BUG_ON() crash would
occur after less than 5 minutes of process execution.

This does not need to be backported as the above patch is not.

This should fix github issue #2068.
2023-03-07 15:51:58 +01:00
.github CI: Reformat matrix.py using black 2023-01-03 16:28:34 +01:00
addons MINOR: stconn: Always report READ/WRITE event on shutr/shutw 2023-02-22 15:59:16 +01:00
admin BUILD: halog: fix missing double-quote at end of help line 2022-11-25 11:11:41 +01:00
dev MEDIUM: ring: make the offset relative to the head/tail instead of absolute 2023-02-24 09:26:30 +01:00
doc BUG/MINOR: cli: fix CLI handler "set anon global-key" call 2023-03-03 18:05:58 +01:00
examples EXAMPLES: remove completely outdated acl-content-sw.cfg 2022-05-30 18:14:24 +02:00
include MINOR: quic: Add traces about QUIC TLS key update 2023-03-03 19:12:26 +01:00
reg-tests BUG/MINOR: ssl: Fix ocsp-update when using "add ssl crt-list" 2023-03-02 15:57:56 +01:00
scripts SCRIPTS: run-regtests: add a version check 2022-11-30 18:44:33 +01:00
src BUG/MEDIUM: dns: ensure ring offset is properly reajusted to head 2023-03-07 15:51:58 +01:00
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 2022-09-09 13:30:17 +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-dev4 2023-02-14 16:55:17 +01:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2021-08-16 12:37:59 +02:00
INSTALL MINOR: version: mention that it's development again 2022-12-01 15:24:10 +01:00
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 BUILD: makefile: fix PCRE overriding specific lib path 2023-02-03 09:42:49 +01:00
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-dev4 2023-02-14 16:55:17 +01:00
VERSION [RELEASE] Released version 2.8-dev4 2023-02-14 16:55:17 +01:00

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)