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Re: what is a segmentation fault, and why is it killing PHP on my server?

Posted by Richard Levasseur on 08/19/06 11:36

Andy Hassall wrote:
> On 18 Aug 2006 15:08:33 -0700, "lawrence k" <lkrubner@geocities.com> wrote:
>
> Re: the subject line:
>
> http://www.google.co.uk/search?q=segmentation+fault
>
> This first hit is informative.
>
> >We made some changes to our server yesterday,
>
> What changes did you make?
>
> >and ever since, every
> >single installation of WordPress that was on the server has stopped
> >running. Other PHP scripts still run fine, but WordPress is dead.
>
> OK, so you should reverse the changes you made.
>
> And, this should serve as a lesson to make changes to a test server first,
> assuming this is a server where the application is worth some amount of money
> greater than zero.
>
> >I logged into the server using ssh and looked the Apache error_log. The
> >only thing there was a whole bunch of lines like this:
> >
> >[Fri Aug 18 18:00:25 2006] [notice] child pid 27827 exit signal
> >Segmentation fault (11)
> >
> >I'm not finding any PHP errors that might tell me what is wrong with
> >WordPress.
> >
> >Can anyone give me advice about what to do?
>
> PHP should never suffer a segmentation fault; if it does, then there is
> either:
>
> (a) a bug in PHP
> (b) a bug in a PHP extension
> (c) a bug in a library loaded by PHP core
> (d) a bug in a library loaded by a PHP extension
> (e) something bizarrely wrong with your system as a whole
>

(f) Seg faults can also occur if there is too much recursion, which can
be caused by user PHP code.

 

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