Support » Fixing WordPress » Upload pictures causes core dumps in wp-admin folder

  • Hi

    I have a problem with uploading pictures using drag and drop from a local file folder where core dumps are generated. When I analyse the core dump using ‘strings <coredump>’ it indicates the active php file is ‘async-upload.php’.

    The basic php configuration information is:

    System Linux ******* 2.6.18-348.1.1.el5xen #1 SMP Tue Jan 22 17:00:37 EST 2013 x86_64
    Build Date Oct 14 2012 21:45:46
    Configure Command ‘./configure’ ‘–disable-fileinfo’ ‘–disable-pdo’ ‘–disable-phar’ ‘–enable-bcmath’ ‘–enable-calendar’ ‘–enable-exif’ ‘–enable-ftp’ ‘–enable-gd-native-ttf’ ‘–enable-libxml’ ‘–enable-magic-quotes’ ‘–enable-mbstring’ ‘–enable-sockets’ ‘–enable-zip’ ‘–prefix=/usr’ ‘–with-curl=/opt/curlssl/’ ‘–with-curlwrappers’ ‘–with-freetype-dir=/usr’ ‘–with-gd’ ‘–with-gettext’ ‘–with-imap=/opt/php_with_imap_client/’ ‘–with-imap-ssl=/usr’ ‘–with-jpeg-dir=/usr’ ‘–with-kerberos’ ‘–with-libdir=lib64’ ‘–with-libxml-dir=/opt/xml2/’ ‘–with-mcrypt=/opt/libmcrypt/’ ‘–with-mysql=/usr’ ‘–with-mysql-sock=/var/lib/mysql/mysql.sock’ ‘–with-openssl=/usr’ ‘–with-openssl-dir=/usr’ ‘–with-pcre-regex=/opt/pcre’ ‘–with-pic’ ‘–with-png-dir=/usr’ ‘–with-xpm-dir=/usr’ ‘–with-zlib’ ‘–with-zlib-dir=/usr’ ‘–without-sqlite3’
    Server API CGI/FastCGI
    Virtual Directory Support disabled
    Configuration File (php.ini) Path /usr/lib
    Loaded Configuration File /usr/local/lib/php.ini
    Scan this dir for additional .ini files (none)
    Additional .ini files parsed (none)
    PHP API 20090626
    PHP Extension 20090626
    Zend Extension 220090626
    Zend Extension Build API220090626,NTS
    PHP Extension Build API20090626,NTS
    Debug Build no
    Thread Safety disabled
    Zend Memory Manager enabled
    Zend Multibyte Support disabled
    IPv6 Support enabled
    Registered PHP Streams compress.zlib, dict, ftp, ftps, gopher, http, https, imap, imaps, pop3, pop3s, rtsp, smtp, smtps, telnet, tftp, php, file, glob, data, zip
    Registered Stream Socket Transports tcp, udp, unix, udg, ssl, sslv3, sslv2, tls
    Registered Stream Filters zlib.*, convert.iconv.*, mcrypt.*, mdecrypt.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk

    I have looked through the history of support tickets for core dumps, but I cannot find any recent ones. Could someone advise where to look for the configuration problem.

Viewing 8 replies - 1 through 8 (of 8 total)
  • You really need to speak to your hosts about this asap. A core dump suggests that there is/was a severe problem in the server itself rather than any software running on the server (such as WordPress).

    I have raised a ticket with the ISP, but it would be useful to provide some guidance on where to look. Is the core dump likely to be caused be a lack of allocated memory?

    Is there a list of resource requirements for wordpress that I can use to check that the environment is compliant against?

    WordPress’ requirements are pretty basic and it should run on pretty much any PHP 5 ready hosting. I seriously doubt that this is a WP issue per se but rather a very fragile server that could collapse at any time irrespective of what you were running on it.

    I encountered a similar problem a few years back with my own hosts and they confirmed that the issue was nothing to do with WP but related to their own server software and/or set up.

    Did anyone find a solution to this? I am having the same issue on two sites.




    I am also experiencing the same problem…please let me know if you have any update on this.


    Same problem here…. creating lots of Core files like core.299636, core.664249…etc.. size is 87 MB only…

    Did anyone find a solution to this? I am having the same problem, but the core files are approximately 200MB each.

    I can’t precisely remember what was done to fix the problem, but it was definitely linked to uploading images; thus it was quiet easy to reproduce. I think the problem was due to a library version compatibility issue in the ISP’s configuration of applications it offered on its hosting platform (but I don’t know the precise details of the solution; they never told me as I’m using a shared platform).

    The other approach was a “masking” option whereby a cron job was created to delete the core dumps on a daily basis to get rid of the “running out of space issue”. We switched off this solution once they worked out the library compatibility problem.

Viewing 8 replies - 1 through 8 (of 8 total)
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