Mac OS X versions 10.5.6 and 10.5.7 ptrace() mutex handling denial of service exploit. This code should be run in a loop and due to problems with mutex handling in ptrace a denial of service can occur when a destroyed mutex is attempted to be interlocked by the OSX kernel giving rise to a race condition. You may need to run this code multiple times.
26dcc6d967acfaa58df417503ccb75ed