upstream/haproxy
1
0
Fork 0
mirror of https://github.com/haproxy/haproxy.git synced 2026-07-15 20:03:33 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions 4
HAProxy - Load balancer
24384 commits 33 branches 422 tags 289 MiB
C 97.8%
Shell 1%
Makefile 0.5%
Awk 0.2%
Lua 0.2%
Other 0.1%
Find a file
Willy Tarreau d2a9149f09 BUG/MINOR: proxy: always detach a proxy from the names tree on free() 
Stephen Farrell reported in issue #2942 that recent haproxy versions
crash if there's no resolv.conf. A quick bisect with his reproducer
showed that it started with commit 4194f75 ("MEDIUM: tree-wide: avoid
manually initializing proxies") which reorders the proxies initialization
sequence a bit. The crash shows a corrupted tree, typically indicating a
use-after-free. With the help of ASAN it was possible to find that a
resolver proxy had been destroyed and freed before the name insertion
that causes the crash, very likely caused by the absence of the needed
resolv.conf:

    #0 0x7ffff72a82f7 in free (/usr/local/lib64/libasan.so.5+0x1062f7)
    #1 0x94c1fd in free_proxy src/proxy.c:436
    #2 0x9355d1 in resolvers_destroy src/resolvers.c:2604
    #3 0x93e899 in resolvers_create_default src/resolvers.c:3892
    #4 0xc6ed29 in httpclient_resolve_init src/http_client.c:1170
    #5 0xc6fbcf in httpclient_create_proxy src/http_client.c:1310
    #6 0x4ae9da in ssl_ocsp_update_precheck src/ssl_ocsp.c:1452
    #7 0xa1b03f in step_init_2 src/haproxy.c:2050

But free_proxy() doesn't delete the ebpt_node that carries the name,
which perfectly explains the situation. This patch simply deletes the
name node and Stephen confirmed that it fixed the problem for him as
well. Let's also free it since the key points to p->id which is never
freed either in this function!

No backport is needed since the patch above was first merged into
3.2-dev10.
2025-04-18 23:50:13 +02:00
.github CI: fedora rawhide: enable unit tests 2025-04-15 16:53:54 +02:00
addons CLEANUP: assorted typo fixes in the code, commits and doc 2025-04-03 11:37:25 +02:00
admin CLEANUP: assorted typo fixes in the code and comments 2024-09-03 17:49:21 +02:00
dev DEV: h2: fix h2-tracer.lua nil value index 2025-04-08 17:44:41 +02:00
doc [RELEASE] Released version 3.2-dev11 2025-04-18 14:19:47 +02:00
examples EXAMPLES: add "games.cfg" and an example game in Lua 2025-04-01 09:10:00 +02:00
include BUG/MINOR: quic: do not crash on CRYPTO ncbuf alloc failure 2025-04-18 18:11:17 +02:00
reg-tests REGTEST: add new reg-test for the 4 new clienthello fetches 2025-04-17 16:39:47 +02:00
scripts TESTS: unit-tests: store sh -x in a result file 2025-03-06 21:22:38 +01:00
src BUG/MINOR: proxy: always detach a proxy from the names tree on free() 2025-04-18 23:50:13 +02:00
tests TESTS: Fix build for filltab25.c 2025-04-03 15:59:41 +02:00
.cirrus.yml CI: cirrus-ci: bump FreeBSD image to 14-2 2025-02-12 13:18:55 +01:00
.gitattributes MINOR: Configure the cpp userdiff driver for *.[ch] in .gitattributes 2021-02-22 18:17:57 +01:00
.gitignore MINOR: tevt/dev: Add term_events tool 2025-01-31 10:41:50 +01:00
.mailmap DOC: update Tim's address in .mailmap 2021-09-16 09:14:14 +02:00
.travis.yml MEDIUM: mworker: remove USE_SYSTEMD requirement for -Ws 2024-11-20 12:07:38 +01:00
BRANCHES DOC: fix some spelling issues over multiple files 2021-01-08 14:53:47 +01:00
BSDmakefile BUILD: makefile: commit the tiny FreeBSD makefile stub 2023-05-24 17:17:36 +02:00
CHANGELOG [RELEASE] Released version 3.2-dev11 2025-04-18 14:19:47 +02:00
CONTRIBUTING CLEANUP: assorted typo fixes in the code and comments 2025-04-02 11:12:20 +02:00
INSTALL DOC: update INSTALL to reflect the minimum compiler version 2025-04-02 18:09:47 +02:00
LICENSE LICENSE: add licence exception for OpenSSL 2012-09-07 13:52:26 +02:00
MAINTAINERS MAJOR: spoe: Let the SPOE back into the game 2024-05-22 09:04:38 +02:00
Makefile BUILD: makefile: enable backtrace by default on musl 2025-04-17 16:25:47 +02:00
README.md DOC: change the link to the FreeBSD CI in README.md 2024-06-03 15:21:29 +02:00
SUBVERS BUILD: use format tags in VERDATE and SUBVERS files 2013-12-10 11:22:49 +01:00
VERDATE [RELEASE] Released version 3.2-dev11 2025-04-18 14:19:47 +02:00
VERSION [RELEASE] Released version 3.2-dev11 2025-04-18 14:19:47 +02:00

README.md

HAProxy

alpine/musl AWS-LC openssl no-deprecated Illumos NetBSD FreeBSD VTest

HAProxy logo

HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications.

Installation

The INSTALL file describes how to build HAProxy. A list of packages is also available on the wiki.

Getting help

The discourse and the mailing-list are available for questions or configuration assistance. You can also use the slack or IRC channel. Please don't use the issue tracker for these.

The issue tracker is only for bug reports or feature requests.

Documentation

The HAProxy documentation has been split into a number of different files for ease of use. It is available in text format as well as HTML. The wiki is also meant to replace the old architecture guide.

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:

License

HAProxy is licensed under GPL 2 or any later version, the headers under LGPL 2.1. See the LICENSE file for a more detailed explanation.