[Bug 1925478] Re: python3-apport will crash if current directory has been unlinked

[Benjamin Drung]

*** This bug is a duplicate of bug 1979637 ***
    https://bugs.launchpad.net/bugs/1979637

Thanks for reporting this bug. I stumbled over the same bug and reported
it as bug #1979637 (since I didn't noticed your bug report). This bug is
fixed in Ubuntu 22.10 (kinetic) and will be backported to Ubuntu 22.04
(jammy). If you want to have it backported to older releases, please
commit in #1979637.

** This bug has been marked a duplicate of bug 1979637
   apport_python_hook: FileNotFoundError if cwd was deleted

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https://bugs.launchpad.net/bugs/1925478

Title:
  python3-apport will crash if current directory has been unlinked

Status in apport package in Ubuntu:
  New

Bug description:
  Description:	Ubuntu 18.04.5 LTS
  Release:	18.04

  I have also checked the code for Ubuntu 20 and the specific code looks
  identical to me.

  
  From package:python3-apport
  file: /usr/lib/python3/dist-packages/apport_python_hook.py

  The follwing code will crash if current directory has been removed, os.getcwd() does not like that directory is gone:
          # apport will look up the package from the executable path.                                                                                                                                                
          try:
              binary = os.path.realpath(os.path.join(os.getcwd(), sys.argv[0]))
          except (TypeError, AttributeError, IndexError):
              # the module has mutated sys.argv, plan B                                                                                                                                                              
              try:
                  binary = os.readlink('/proc/%i/exe' % os.getpid())
              except OSError:
                  return

  
  FileNotFoundError: [Errno 2] No such file or directory: '/tmp/tmp_6ehbyrh'
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/apport_python_hook.py", line 76, in apport_excepthook
      binary = os.path.realpath(os.path.join(os.getcwd(), sys.argv[0]))
  FileNotFoundError: [Errno 2] No such file or directory

  
  The try-except condition above maybe should also contain FileNotFoundError to handle this error.

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