Two logs referencing each other with [log:X] causes infinite load loop

The Log module provides an input filter that will search for instances of [log:X] (where X is a log ID), and use that to generate an inline link to the reference log.

However, the code that generates the link performs a full log_load(). So, if you have two logs that reference each other with [log:X] links, it creates an infinite loop and crashes Drupal.

The solution: don't use log_load() in log_filter_log().