Title: Apache Error log showing Pingback.ping error
Last modified: August 21, 2016

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# Apache Error log showing Pingback.ping error

 *  [greg.smith0](https://wordpress.org/support/users/gregsmith0/)
 * (@gregsmith0)
 * [12 years ago](https://wordpress.org/support/topic/apache-error-log-showing-pingbackping-error/)
 * Hi I have three websites running on an Amazon EC2 instance. All running 3.91 
   but I have had the same problems since early March so certainly was still a problem
   when I was running 3.8. Although prior to 5th of March I don’t think it was causing
   a problem.
 * [http://www.ool.co.uk](http://www.ool.co.uk)
    [http://www.oxfordhomeschooling.co.uk](http://www.oxfordhomeschooling.co.uk)
   [http://www.writingschool.co.uk](http://www.writingschool.co.uk)
 * My instance has been crashing every 7-10 days or sometimes more frequently. I
   suspect it is something to do with this reported error which seems to be getting
   more and more frequent. I think something like 50,000 times in the last week 
   alone.
 *     ```
       body.xml:1: parser warning : xmlParsePITarget: invalid name prefix 'xml'
       <?xmlversion="1.0"?><methodCall><methodName>pingback.ping</methodName><params><p
       ```
   
 * This error is found in the apache error log.
 * I can’t find anything in code which would account for this.
 * Typically before the site falls over I get something like this in the Apache 
   logs probably a dozen times over
 * `[Tue Jun 03 07:16:28.288709 2014] [core:notice] [pid 3004] AH00052: child pid
   11243 exit signal Segmentation fault (11)`
 * I know that at the time, process 3004 was httpd so it is child of httpd but I
   don’t know why the fault.
 * The crashes don’t coincide with any event I can detect and don’t seem to correlate
   in anyway to network traffic. Although they do seem to generally correlate to
   periods of high CPU usage.
 * Any suggestions gratefully recieved as I am fed up of getting up at 2 in the 
   morning to restart my site

The topic ‘Apache Error log showing Pingback.ping error’ is closed to new replies.

## Tags

 * [apache](https://wordpress.org/support/topic-tag/apache/)
 * [pingback](https://wordpress.org/support/topic-tag/pingback/)
 * [Server Crash](https://wordpress.org/support/topic-tag/server-crash/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [greg.smith0](https://wordpress.org/support/users/gregsmith0/)
 * Last activity: [12 years ago](https://wordpress.org/support/topic/apache-error-log-showing-pingbackping-error/)
 * Status: not resolved

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