Minimal config that duplicates this:

--

global
        chroot /var/lib/haproxy
        user haproxy
        group haproxy
        daemon
        maxconn 4096

defaults
        log global
        option dontlognull
        option redispatch
        retries 3
        timeout client 50s
        timeout connect 10s
        timeout http-request 5s
        timeout server 50s
        maxconn 4096

frontend test-front
    bind *:80
    mode http
    default_backend test-back


backend test-back
    mode http
    stick store-request src
    stick-table type ip size 256k expire 30m
    server www.ubuntu.com 91.189.89.115:80

--

Then:

# curl http://127.0.0.1/
curl: (52) Empty reply from server

and you see in /var/log/haproxy.log:

Nov 20 13:52:11 localhost haproxy[43712]: [ALERT] 323/135209 (43712) : Current 
worker 43713 exited with code 135
Nov 20 13:52:11 localhost haproxy[43712]: [ALERT] 323/135209 (43712) : 
exit-on-failure: killing every workers with SIGTERM
Nov 20 13:52:11 localhost haproxy[43712]: [WARNING] 323/135209 (43712) : All 
workers exited. Exiting... (135)

-- 
You received this bug notification because you are a member of Ubuntu
High Availability Team, which is subscribed to haproxy in Ubuntu.
https://bugs.launchpad.net/bugs/1804069

Title:
  haproxy fails on arm64 due to alignment error

Status in haproxy package in Ubuntu:
  Incomplete

Bug description:
  This fault was reported via the haproxy mailing list https://www.mail-
  archive.com/[email protected]/msg31749.html

  And then patched in the haproxy code here
  
https://github.com/haproxy/haproxy/commit/52dabbc4fad338233c7f0c96f977a43f8f81452a

  Without this patch haproxy is not functional on aarch64/arm64.
  Experimental deployments of openstack-ansible on arm64 fail because of
  this bug, and without a fix applied to the ubuntu bionic packages we
  cannot proceed further as the openstack CI only installs the upstream
  ubuntu distribution packages.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/haproxy/+bug/1804069/+subscriptions

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