I installed the version of apport from xenial-proposed and no longer
received a Traceback when running the test case.

Preparing to unpack .../python3-apport_2.20.1-0ubuntu2.28_all.deb ...
Unpacking python3-apport (2.20.1-0ubuntu2.28) over (2.20.1-0ubuntu2.27) ...
Preparing to unpack .../apport_2.20.1-0ubuntu2.28_all.deb ...
Unpacking apport (2.20.1-0ubuntu2.28) over (2.20.1-0ubuntu2.27) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for hicolor-icon-theme (0.15-0ubuntu1.1) ...
Processing triggers for systemd (229-4ubuntu21.29) ...
Processing triggers for ureadahead (0.100.0-19.1) ...
Setting up python3-apport (2.20.1-0ubuntu2.28) ...
Setting up apport (2.20.1-0ubuntu2.28) ...
bdmurray@clean-xenial-amd64:~$ python3 generate-sigsegv-crash.py cat
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from cat...(no debugging symbols found)...done.
(gdb) Starting program: /bin/cat 

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b04320 in __read_nocancel () at 
../sysdeps/unix/syscall-template.S:84
84      ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) Saved corefile /tmp/tmplo7od5en/my.core
(gdb) ERROR: apport (pid 2923) Fri Dec  4 15:48:31 2020: called for pid 2915, 
signal 11, core limit 0, dump mode 1
ERROR: apport (pid 2923) Fri Dec  4 15:48:31 2020: executable: /bin/cat 
(command line "/bin/cat")
ERROR: apport (pid 2923) Fri Dec  4 15:48:31 2020: is_closing_session(): no 
DBUS_SESSION_BUS_ADDRESS in environment
ERROR: apport (pid 2923) Fri Dec  4 15:48:31 2020: wrote report 
/tmp/tmplo7od5en/_bin_cat.1000.crash
(gdb) Kill the program being debugged? (y or n) [answered Y; input not from 
terminal]
(gdb) --- post-processing /tmp/tmplo7od5en/_bin_cat.1000.crash


** Tags removed: verification-needed-xenial
** Tags added: verification-done-xenial

** Tags removed: verification-needed
** Tags added: verification-done

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Touch seeded packages, which is subscribed to apport in Ubuntu.
https://bugs.launchpad.net/bugs/1906565

Title:
  traceback when running apport as non-root user

Status in apport package in Ubuntu:
  Fix Released
Status in apport source package in Xenial:
  Fix Committed
Status in apport source package in Bionic:
  Fix Committed
Status in apport source package in Focal:
  Fix Committed
Status in apport source package in Groovy:
  Fix Committed

Bug description:
  [Impact]
  The apport-test-crashes package, which is used to test the Error Tracker 
deployments, fails produce crash files for binary applications since "various 
security hardening fixes" were included in apport. The problematic change is 
the dropping of supplemental groups in data/apport. This results in a 
PermissionError as it is not the root user who is calling 
/usr/share/apport/apport.

  [Test Case]
  The least convulted test case involves using the generate-sigsegv-crash.py 
script from apport-test-crashes. This ends up using a command similar to 
'/usr/share/apport/apport -p 4077 -s 11 -E /usr/bin/gnome-calculator < 
/tmp/20.10-gnome-calculator.core' which then will encounter the Traceback.

  1) Comment out "check_lock()" in /usr/share/apport/apport (This is necessary 
as we are not running as root)
  2) Put a copy of generate-sigsegv-crash.py on disk.
  3) Run 'python3 /tmp/generate-sigsegv-crash.py cat'
  4) Observe the following Traceback:

  Traceback (most recent call last):
    File "/tmp/tmpvkt5d266/apport", line 599, in <module>
      drop_privileges(True)
    File "/tmp/tmpvkt5d266/apport", line 125, in drop_privileges
      os.setgroups([])
  PermissionError: [Errno 1] Operation not permitted

  With the version of apport from -proposed you'll receive no such
  Traceback.

  [Regression Potential]
  If there is an error in the python code we code see a new traceback for any 
and all crashes being generated, so ensure regular crash generation works too.

  apport-test-crashes code is here:
  
https://code.launchpad.net/~daisy-pluckers/error-tracker-deployment/test-crashes/

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