Core Dumps on 1.7.12 with SPDY

Valentin V. Bartenev vbart at
Mon Apr 13 21:04:04 UTC 2015

On Sunday 12 April 2015 14:41:37 numroo wrote:
> Hello
> I'm running Nginx installed from the repos on a Ubuntu Server
> 14.04.
> There are about a dozen different sites running on this server, mostly using
> PHP-FPM backend.
> Since the update to 1.7.12 I had frequent core dumps (every few minutes a
> series of two to four crashes).
> I tried alot by disabling features, sites, config options without success.

Have you tried to fill a bug report with the core dump or at least a full 
backtrace provided?

> The only thing I could tell, that two distinct sites seem to be generating
> these crashes.
> One running Wordpress the other running Owncloud. Other PHP-sites run fine.
> No crashes as long as neither of the WP or OC sites are enabled.
> Today, out of a hunch, I disabled SPDY on the two problematic hosts.
> I had not a single crash anymore since then. 
> But whats even stranger. SPDY is still active on those hosts.
> It might be that SPDY is still actice due to shared IP & and PORT
> configurations with other hosts on IPv4.
> But I don't share IPv6 adresses between hosts.

A quote from the documentation:

 "The spdy parameter allows accepting SPDY connections on this port."

So, yes it's always enabled on the ip-port basis.

  wbr, Valentin V. Bartenev

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