Meo

reinstalled php with no Suhosin patch. The errors stopped appearing, but the system is still slow

settip up a cron job to restart apache every 30 minutes seems to have helped. But isn’t it kind of not right way to solve problems?

I am having that dreadful problem with heap overflow too, didn’t notice when it started though, most likely with the upgrade to WP 2.3. My domain logs show these errors:

[Thu Nov 22 10:22:27 2007] [error] ALERT – linked list corrupt on efree() – heap corruption detected (attacker ‘65.111.210.184’, file ‘/usr/home/username/domainname.com/htdocs/wp-settings.php’, line 190)
[Thu Nov 22 10:23:38 2007] [error] ALERT – linked list corrupt on efree() – heap corruption detected (attacker ‘201.141.145.223’, file ‘/usr/home/username/domainname.com/htdocs/wp-settings.php’, line 192)
[Thu Nov 22 10:23:55 2007] [error] ALERT – linked list corrupt on efree() – heap corruption detected (attacker ‘88.131.106.6’, file ‘/usr/home/username/domainname.com/htdocs/wp-settings.php’, line 197)

The errors do not happen all the time, in fact i can’t find any patterns (can happen 10 times in 15 minutes, then nothing for the next 2 hours). Sometimes i even find my own ip in the logs, which is telling me it is not bot attack or something. Notice it’s a different line of wp-settings.php every time that is causing the error.

Each time an error occurs apache most likely hangs and the server becomes very slow for some time, or until apache’s graceful restart. PHP memory has been upped to 16, 24 and 32 mbs and it didn’t help. Tested this on two different servers with two different PHP versions (4.4.4 and 4.4.7), only to the same result.

Currently i use wp 2.3.1 with custom theme and 3 plugins (WP-PageNavi, Peter’s Custom Anti-Spam and Kottke Style Archive), all others that used to run fine before were disabled until i can fix the error.

I can’t believe noone else is having such problems. I have tried almost anything that was recommended, but to no avail. Shall i try to recompile PHP without Suhosin patch?