id summary reporter owner description type status component version resolution keywords cc guest host 11273 dtrace + VBox kexts = kernel panic => Fixed in SVN CrB "Loading dtrace (or anything depending on it) causes an immediate kernel panic if the VBox kexts are loaded. It does NOT require any running guests, or even the VBox interface loaded. https://forums.virtualbox.org/viewtopic.php?f=8&t=52717 Post includes a backtrace of the crash. I can trivially reproduce the panic. I can do additional testing and/or supply additional info, if needed." defect closed other VirtualBox 4.2.4 fixed other Mac OS X