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Date:      Tue, 26 May 2015 07:29:13 +0100
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: What's the gotcha with latest lang/php55?
Message-ID:  <556412B9.7000508@FreeBSD.org>
In-Reply-To: <20150525180825.Horde.iLgBeoFSnW0rHEfqq6T9Wky@mail.parts-unknown.org>
References:  <20150525180825.Horde.iLgBeoFSnW0rHEfqq6T9Wky@mail.parts-unknown.org>

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On 26/05/2015 02:08, David Benfell wrote:
> My websites are down. It has taken me forever to figure out that php is=

> seg-faulting because I never know where to find the core dumps. I tried=

> accessing the dump with gdb but it just hangs after telling me that it
> seg-faulted.
>=20
> Is anyone else running into this? Have you gotten through it? What do I=

> need to fix and how?

There are two reasons why php may continually segfault:

  * Load order of extensions in /usr/local/etc/php/extensions.ini

  * Having a mixture of PHP modules with and without Zend thread safety
    enabled.

In the first case -- which I can't recall seeing any reports of in the
last few years, so it might actually have been fixed somehow -- it's a
matter of taking out some modules from extensions.ini until you can
isolate the one that triggers the crash, and then re-inserting it
sufficiently early in the order.

In the second case, you need consistent ZTS settings in all your PHP
packages, including the base language and such things as www/mod_php55.
 Check the contents of /usr/local/lib/php.  There will be a directory
for loadable modules called eg. either '20121212' or '20121212-zts.'
You certainly shouldn't have both.  To cure this problem, you will need
to reinstall as many of the php packages as necessary to ensure
consistent settings: it may be easier just to reinstall everything PHP
related.

	Cheers,

	Matthew





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