Hulk Utility on Ubuntu: Threads Error

August 2012 · 1 minute read
Day ago I tried HULK DoS tool on a server at my work. Hulk can't run on my netbook with Ubuntu Precise and failed with exception (python 2.7):
-- HULK Attack Started --
Traceback (most recent call last):
  File "Downloads/", line 153, in 
  File "/usr/lib/python2.7/", line 494, in start
    _start_new_thread(self.__bootstrap, ())
thread.error: can't start new thread
To fix it you will need increase stack size limit in the shell: # ulimit -s unlimited Initially it was: $ ulimit -s 8192 BTW, server wins a battle vs hulk.