haproxy crashes with a segmentation fault

[bgibson710]

Whenever I attempt to get a new certificate, my haproxy service crashes with a segmentation fault.

00000266:production_webserver_frontend.accept(0007)=0010 from [66.133.109.36:49292]
00000266:production_webserver_frontend.clireq[0010:ffffffff]: GET /.well-known/acme-challenge/token HTTP/1.1
00000266:production_webserver_frontend.clihdr[0010:ffffffff]: Host: site.example.com
00000266:production_webserver_frontend.clihdr[0010:ffffffff]: User-Agent: Mozilla/5.0 (compatible; Let's Encrypt validation server; +https://www.letsencrypt.org)
00000266:production_webserver_frontend.clihdr[0010:ffffffff]: Accept: /
00000266:production_webserver_frontend.clihdr[0010:ffffffff]: Accept-Encoding: gzip
00000266:production_webserver_frontend.clihdr[0010:ffffffff]: Connection: close
[info] 314/131321 (25402) : [acme] served http-01 token: token (client-ip: 66.133.109.36)
00000266:production_sites_nosni_be.srvrep[0010:ffffffff]: HTTP/1.1 200 OK
00000266:production_sites_nosni_be.srvhdr[0010:ffffffff]: Content-Type: text/plain
00000266:production_sites_nosni_be.srvhdr[0010:ffffffff]: Content-Length: 88
00000266:production_sites_nosni_be.srvhdr[0010:ffffffff]: Server: haproxy/acme-http01-authenticator
00000266:production_sites_nosni_be.srvhdr[0010:ffffffff]: Connection: close
Segmentation fault

[rmbolger]

It would likely help to provide the version of haproxy and what platform it's running on.

[bgibson710]

oops sorry I meant to include more info :)

I'm running on Centos 6.8 / haproxy 1.6.9 / lua 5.3.3

[bgibson710]

I've tried running an strace and I get nothing useful unfortunately, the only way I was able to get what I did was by running haproxy in debug mode, and even that was pretty useless for telling me what happend. I've done an LDD on both lua and haproxy and I can provide that info if it's useful, but I can confirm other utilities using the same libraries have no issues.

[lukastribus]

I think the full output of "haproxy -vv" is needed, and a gdb backtrace of the crash as well.