Very Annoying PHP Errors

Peter Pluta peter at
Wed Feb 14 11:57:08 UTC 2007

I recently upgraded to 5.2.1_1. After upgrading (or before not exactly 
sure) I began getting errors ALERT - canary mismatch on efree() - heap 
overflow detected in my Apache logs. Also, certain parts of one of my 
database (mysql) driven sites stopped working. Certain pages just 
stopped working, they return a blank white page. I'm absolutely stumped 
on what it could be. I have tried recompiling php 4-5x with different 
options and re-installing apache etc... Nothing is working. I looked for 
php bug reports, and found this one 
but it does not really pertain to me. Can anyone give some pointers or 
tips on what to do?

Right now I am thinking of just downgrading to PHP 5.2.0 because that's 
what worked last. Is there an easy way to downgrade ports?

Any feedback, tips, or help would be greatly appreciated.


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