Errors when trying the solve.py in ./examples/grub folder

[vancaho]

Hi,
When I try to run the solve.py script to debug the GRUB back 28 vulnerability, the following errors are reported:

   File "/home/vancaho/test/grub/solve_grub.py", line 78, in <module>
  find_bug()
 File "/home/vancaho/test/grub/solve_grub.py", line 6, in find_bug
  p = angr.Project('crypto.mod', load_options={'main_opts': {'custom_base_addr': 0x8000000}})
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/angr/project.py", line 128, in __init__
  self.loader.add_object(self._extern_obj)
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/cle/loader.py", line 284, in add_object
  base_addr = self._get_safe_rebase_addr()
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/cle/loader.py", line 329, in _get_safe_rebase_addr
  return self.max_addr() + (granularity - self.max_addr() % granularity)
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/cle/loader.py", line 399, in max_addr
  return max(map(lambda x: x.get_max_addr(), self.all_objects))
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/cle/loader.py", line 399, in <lambda>
  return max(map(lambda x: x.get_max_addr(), self.all_objects))
File "/home/vancaho/.virtualenvs/angr/local/lib/python2.7/site-packages/cle/backends/__init__.py", line 276, in get_max_addr
  return out + self.rebase_addr

How to solve this problem? Thanks a lot

[ltfish]

Your backtrace is not complete. What is the exact exception that occurred?

[vancaho]

Hi, I upgrade angr from version 4.5.12.21 to 4.5.12.28, the above errors disappear. Thanks a lot