FreeBSD 10, apache 2.4, php56 & Segmentation fault (11)

By | November 25, 2014

Error logs were filling up with these….

[core:notice] [pid 1282] AH00052: child pid 29796 exit signal Segmentation fault (11)

Web visitors where shown…

No data received

Unable to load the web page because the server sent no data.

Tracked the issue down to the fact php5-extentions port was compiled with zip and / or zlib support.

Recompiles lang/php5-extention withouth zip & zlib support and removed old modules with…

cd/usr/ports/archivers/php56-zip && make deinstall
cd/usr/ports/archivers/php56-zlib && make deinstall

(later reinstalled zlib due to wordpress requiring it to unpack plugin updates, everything continued to work)

.. and 99% of things started working again. Still had one problem with the contact us pages on our site though, seems to be related to contact-form plugin



Tracked issue do use of imagepng in really-simple-captcha.php, line 146. Obviously not really-simple-captcha.php’s fault…


Used the following script to test further

 $img=imagecreatetruecolor(200, 30);
 $text_color=imagecolorallocate($img, 200, 200, 200);
 imagestring($img, 5, 5, 5, 'test', $text_color);
Everytime the above script was called via a browser it would "Segmentation fault (11)" error.

Went back and recompiled /usr/ports/graphics/php56-gd (+T1lib, +TrueType, -JIS, -X11, -VPX) without success
Recompiled /usr/ports/graphics/png without APNG (-APNG, +PNGTEST) but didn't seem to make any difference.
Went back and recompiled again /usr/ports/graphics/php56-gd (+T1lib, +TrueType, -JIS, -X11, -VPX) and started to work.