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ReDeBug

Unpatched code clone detection tool - reimplemented version in Python.

Please refer to our IEEE S&P research paper for technical details.

Note that this is a reimplemented version in Python for usability and adaptability, and different from the original faster C implementation used in IEEE S&P evaluation.

Dependencies

  • bitarray, python-magic, and argparse modules: pip install bitarray python-magic argparse
  • libmagic package: apt-get install libmagic-dev on Ubuntu/Debian, brew install libmagic on OSX

Usage

Please refer to the help message for options:

$ python redebug.py -h
usage: redebug.py [-h] [-n NUM] [-c NUM] [-v] patch_path source_path

positional arguments:
  patch_path            path to patch files (in unified diff format)
  source_path           path to source files

optional arguments:
  -h, --help            show this help message and exit
  -n NUM, --ngram NUM   use n-gram of NUM lines (default: 4)
  -c NUM, --context NUM
                        print NUM lines of context (default: 10)
  -v, --verbose         enable verbose mode (default: False)

$ cd samples
$ wget "https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.19.11.tar.xz"
$ tar -xvf linux-5.19.11.tar.xz
$ python ../redebug.py 0001-usb-cdns3-remove-dead-code.patch linux-5.19.11/drivers/usb/