HAProxy known bugs for maintenance branch 2.6 :  1 

This is maintenance branch 2.6 whose latest version is 2.6.20. If your version is not the last one in the maintenance branch, you are missing fixes for known bugs, and by not updating you are needlessly taking the responsibility for the risk of unexpected service outages and exposing your web site to possible security issues.

The HAProxy development team takes a great care of maintaining stable versions so that all users can apply bug fixes without having to take the risk of upgrading to a new branch. In turn users are expected to apply the fixes when the development team estimates that they were worth being backported to stable branches. In short, if you are running any 2.6 version other than 2.6.20, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2024-11-082.6.20 ⇐ last
2024-09-192.6.19 
2024-06-182.6.18 
2024-04-052.6.17 
2023-12-132.6.16 
2023-08-092.6.15 
2023-06-092.6.14 
2023-05-022.6.13 
2023-03-282.6.12 
2023-03-172.6.11 
2023-03-102.6.10 
2023-02-142.6.9 
2023-01-242.6.8 
2022-12-022.6.7 
2022-09-222.6.6 
2022-09-032.6.5 
2022-08-222.6.4 
2022-08-192.6.3 
2022-07-222.6.2 
2022-06-212.6.1 
2022-05-312.6.0 

Fixes for known bugs pending in this branch since the last release (2.6.20)

These fixes have already been queued for the next 2.6 release but no version was released with them yet. Note that fixes are backported several at a time from the development branch to maintenance branches, and the absence of a fix here doesn't mean none will be issued soon.

Bugs are almost always tagged with a severity (some people forget the severity tag when the bug is minor). The following severities are used :

Total known bugs in the latest version of this branch by category :

TotalCRITICALMAJORMEDIUMMINOR
1 0 0 1 0

Click on the subjects below to get the full description of the bug :

Merge dateSubject - Severity (minor, medium, major, critical)
2024-11-08BUG/MEDIUM: mux-pt: Never fully close the connection on shutdown

Known bugs fixed in the development branch after the last commit in this branch

It is important to understand that not all of these commits are necessarily relevant to this version, but clicking on them will show the bug description. All fixes are made first in the development branch and then backported to the maintenance branches. This ensures no fix is lost when upgrading. If a fix was marked for backporting to this branch and is not there yet, it's likely that it is still missing. Do not hesitate to ask on the haproxy mailing list if you feel like a fix has been skipped.

DateSubject
2024-12-19BUG/MINOR: h2/rhttp: fix HTTP2 conn counters on reverse
2024-12-19BUG/MEDIUM: mux-quic: prevent BUG_ON() by refreshing frms on MAX_DATA
2024-12-18BUG/MEDIUM: mux-quic: do not mix qcc_io_send() return codes with pacing
2024-12-17MINOR: bug: make BUG_ON() fall back to ASSUME
2024-12-17BUG/MEDIUM: queues: Do not use pendconn_grab_from_px().
2024-12-17BUG/MEDIUM: queues: Make sure we call process_srv_queue() when leaving
2024-12-16BUG/MEDIUM: stconn: Only consider I/O timers to update stream's expiration date
2024-12-16BUG/MINOR: ssl/cli: 'show ssl ca-file' escape the first '*' of a filename
2024-12-16BUG/MINOR: ssl/cli: 'show ssl crl-file' escape the first '*' of a filename
2024-12-16BUG/MINOR: ssl/cli: 'show ssl cert' escape the first '*' of a filename
2024-12-13BUG/MINOR: quic: missing Startup accelerating probing bw states
2024-12-13BUG/MINOR: cli: cli_snd_buf: preserve \r\n for payload lines
2024-12-13BUG/MINOR: quic: too permissive exit condition for high loss detection in Startup (BBR)
2024-12-13BUG/MINOR: quic: fix the wrong tracked recovery start time value
2024-12-13BUG/MINOR: quic: reduce packet losses at least during ProbeBW_CRUISE (BBR)
2024-12-13BUG/MINOR: quic: underflow issue for bbr_inflight_hi_from_lost_packet()
2024-12-13BUG/MINOR: quic: remove max_bw filter from delivery rate sampling
2024-12-13BUG/MINOR: quic: wrong bbr_target_inflight() implementation
2024-12-13BUG/MINOR: quic: fix BBB max bandwidth oscillation issue.
2024-12-13BUG/MINOR: quic: wrong logical statement in in_recovery_period() (BBR)
2024-12-12MINOR: build: define DEBUG_STRESS
2024-12-11BUG/MINOR: hlua_fcn: restore server pairs iterator pointer consistency
2024-12-11BUG/MINOR: server-state: Fix expiration date of srvrq_check tasks
2024-12-11BUG/MINOR: http-fetch: Ignore empty argument string for query()
2024-12-10BUG/MEDIUM: stats/server: use watcher to track server during stats dump
2024-12-10BUG/MINOR: stats: decrement srv refcount on stats-file release
2024-12-10BUG/MINOR: resolvers: handle a possible strdup() failure
2024-12-10BUG/MINOR: ssl_crtlist: handle a possible strdup() failure
2024-12-10BUG/MINOR: namespace: handle a possible strdup() failure
2024-12-09BUG/MINOR: mworker: detach from tty when received READY from worker
2024-12-09BUG/MEDIUM: mworker: report status, if daemonized master fails
2024-12-09BUG/MEDIUM: startup: report status if daemonized process fails
2024-12-09BUG/MEDIUM: startup: don't daemonize if started with -c
2024-12-06BUG/MINOR: mux-h2: fix expression when detecting excess of CONTINUATION frames
2024-12-06BUG/MINOR: debug: COUNT_IF() should return true/false
2024-12-06BUG/MINOR: startup: fix error path for master, if can't open pidfile
2024-12-06BUG/MINOR: mworker: fix -D -W -sf/-st modes
2024-12-06BUG/MINOR: mworker: don't save program PIDs in oldpids
2024-12-05BUG/MINOR: config: Fix parsing of accept-invalid-http-{request,response}
2024-12-05BUG/MEDIUM: mux-h2: make sure not to touch dummy streams when sending WU
2024-12-05BUG/MINOR: quic: remove startup alert if GSO unsupported
2024-12-05BUG/MINOR: quic: remove startup alert if conn socket-owner unsupported
2024-12-05BUG/MEDIUM: mux-quic: remove pacing status when everything is sent
2024-12-04BUG/MINOR: init: do not call fork_poller() for non-forked processes
2024-12-04BUG/MEDIUM: init: make sure only daemonized processes change their session
2024-12-04BUG/MINOR: quic: fix bbr_inflight() calls with wrong gain value
2024-12-02BUG/MINOR: startup: fix pidfile creation
2024-12-02BUG/MINOR: startup: close pidfd and free global.pidfile in handle_pidfile()
2024-12-02BUG/MINOR: signal: register default handler for SIGINT in signal_init()
2024-12-02BUG/MINOR: listener: fix potential null pointer dereference in listener_release()
2024-11-29BUG/MINOR: h1-htx: Use default reason if not set when formatting the response
2024-11-29BUG/MEDIUM: http-ana: Reset request flag about data sent to perform a L7 retry
2024-11-29BUG/MEDIUM: quic: prevent stream freeze on pacing
2024-11-29BUG/MEDIUM: event_hdl: fix uninitialized value in async mode when no data is provided
2024-11-29BUG/MINOR: hlua_fcn: fix Patref:set() force parameter
2024-11-28BUG/MINOR: improve BBR throughput on very fast links
2024-11-28BUG/MINOR: log: fix lf_text() behavior with empty string
2024-11-27BUG/MEDIUM: sock: Remove FD_POLL_HUP during connect() if FD_POLL_ERR is not set
2024-11-26BUG/MEDIUM: quic: prevent EMSGSIZE with GSO for larger bufsize
2024-11-25BUG/MEDIUM: http-ana: Don't release too early the L7 buffer
2024-11-25BUG/MAJOR: quic: fix wrong packet building due to already acked frames
2024-11-25BUG/MEDIUM: quic: fix sending performance due to qc_prep_pkts() return
2024-11-25BUG/MINOR: mux-quic: fix show quic report of QCS prepared bytes
2024-11-22BUG/MINOR: quic: Avoid BUG_ON() on ->on_pkt_lost() BBR callback call
2024-11-22BUG/MAJOR: mux-h1: Properly handle wrapping on obuf when dumping the first-line
2024-11-21BUG/MEDIUM: pools/memprofile: always clean stale pool info on pool_destroy()
2024-11-21BUG/MINOR: activity/memprofile: reinitialize the free calls on DSO summary
2024-11-21BUG/MEDIUM: wdt: fix the stuck detection for warnings
2024-11-21BUG/MEDIUM: debug: don't set the STUCK flag from debug_handler()
2024-11-21BUG/MINOR: startup: init_early: remove obsolete comment
2024-11-21BUG/MINOR: config: allow to check HAPROXY_LOCALPEER in config
2024-11-21BUG/MINOR: startup: fix UAF when set the default for log_tag
2024-11-21BUG/MINOR: quic: Missing application limitations tracking for BBR
2024-11-21BUG/MINOR: cfgparse-quic: fix warning for cc-aglo with 0 burst
2024-11-21BUG/MINOR: cfgparse-quic: fix bbr initialization
2024-11-20BUG/MEDIUM: h3: Increase max number of headers when sending headers
2024-11-20BUG/MEDIUM: h3: Properly limit the number of headers received
2024-11-20BUG/MEDIUM: mux-h2: Check the number of headers in HEADERS frame after decoding
2024-11-20BUG/MEDIUM: mux-h2: Increase max number of headers when encoding HEADERS frames
2024-11-20BUG/MINOR: cfgparse-quic: fix renaming of max-window-size
2024-11-20BUG/MINOR: http-ana: Adjust the server status before the L7 retries
2024-11-19BUG/MINOR: http_ana: Report -1 for %Tr for invalid response only
2024-11-19BUG/MINOR: mworker-prog: don't warn about deprecated section with expose-deprecated-directives
2024-11-15MINOR: chunk: add a BUG_ON upon the next init_trash_buffer()
2024-11-15BUG/MEDIUM: clock: make sure now_ms cannot be TICK_ETERNITY
2024-11-15BUG/MINOR: peers: make sure to always apply offsets to now_ms in expiration
2024-11-15BUG/MINOR: mux_quic: make sure to always apply offsets to now_ms in expiration
2024-11-15BUG/MEDIUM: mailers: make sure to always apply offsets to now_ms in expiration
2024-11-15BUG/MINOR: debug: do not set task expiration to TICK_ETERNITY
2024-11-15BUG/MEDIUM: checks: make sure to always apply offsets to now_ms in expiration
2024-11-15BUG/MINOR: Don't report early srv aborts on request forwarding in DONE state
2024-11-15BUG/MEDIUM: mux-h2: Don't send RST_STREAM frame for streams with no ID
2024-11-14BUG/MINOR: deinit: release uri_auth admin rules
2024-11-13BUG/MEDIUM: resolvers: Insert a non-executed resulution in front of the wait list
2024-11-13BUG/MEDIUM: stconn: Don't forward shut for SC in connecting state
2024-11-13BUG/MINOR: cli: don't show sockpairs in HAPROXY_CLI and HAPROXY_MASTER_CLI
2024-11-13BUG/MINOR: startup: set HAPROXY_CFGFILES in read_cfg
2024-11-08BUG/MEDIUM: quic: prevent crash due to CRYPTO parsing error
2024-11-08BUG/MEDIUM: mux-h2: try to wait for the peer to read the GOAWAY

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