nginx - workers segfaulting

nmarques nginx-forum at
Mon Dec 2 18:45:46 UTC 2013

> - exact output from "nginx -V"

Name        : nginx                        Relocations: (not relocatable)
Version     : 1.4.4                             Vendor: nginx inc.
Release     : 1.el6.ngx                     Build Date: Tue 19 Nov 2013
12:11:15 PM WET
Install Date: Mon 02 Dec 2013 06:33:31 PM WET      Build Host:
Group       : System Environment/Daemons    Source RPM:
Size        : 788337                           License: 2-clause BSD-like
Signature   : RSA/SHA1, Tue 19 Nov 2013 01:03:00 PM WET, Key ID
URL         :
Summary     : High performance web server
Description :
nginx [engine x] is an HTTP and reverse proxy server, as well as
a mail proxy server.

Running on CentOS 6.4. Same happens with 1.4.3 (I've tested a downgrade).

> - do use any nginx modules?

No. Plain upstream vanilla.

> - do you use any third party modules?

No. Upstream binary distribution package (rpm)

> - can post and explain your configuration (at least partially)?

NGINX is a reverse proxy for a vhosted tomcat with openSSL. What tokens from
the configuration do you require?

> - you said you can provide cores, can you post a backtrace?

I'm going to attach nginx master process to gdb and check it out. I can't
really attach to workers since they segfault quite fast.

> - some details about the underlying OS (virtualization,
>   cpu/ram/architecture/nic/kernel releases)?

CentOS 6.4 (full updated) - running on vmware 5.1u1 - 4vcpu's, 6GB RAM,
[root at iweb-as2 ~]# uname -a
Linux XXXXXXXXXXXX 2.6.32-358.23.2.el6.x86_64 #1 SMP Wed Oct 16 18:37:12 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux

Posted at Nginx Forum:,245135,245138#msg-245138

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