Unfortunately the fix you added by inserting an empty space string ' '
for the UserGroups field does not resolve the bug at all. This is
because when reading the report in (problem_report.py) all fields which
are empty get ignored, and a field which is all whitespace counts as
empty. Prior to the fix the report already contained the UserGroups
field, it just didn't have an empty space after it. So nothing really
changed.
This is the new stacktrace when running apport-unpack with a crash
report generated with the fixed report.py
Traceback (most recent call last):
File "/usr/bin/apport-unpack", line 77, in <module>
pr.extract_keys(f, bin_keys, dir)
File "/usr/lib/python3/dist-packages/problem_report.py", line 269, in
extract_keys
raise ValueError('%s has no binary content' %
ValueError: ['UserGroups'] has no binary content
The UserGroups field can't be empty. For example if I add a group in the
UserGroups field, apport-unpack runs without errors. This is my current
fix to not deal with the constant stacktrace from apport-unpack.
sed -i -E 's/(UserGroups:)/\1 nogroup/' /var/crash/_crashfile
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https://bugs.launchpad.net/bugs/1427600
Title:
apport-unpack: ValueError: ['UserGroups'] has no binary content
Status in apport package in Ubuntu:
Fix Released
Status in apport source package in Xenial:
Triaged
Status in apport source package in Focal:
In Progress
Status in apport source package in Groovy:
Fix Released
Bug description:
[Impact]
apport-unpack crashes when trying to unpack a crash
[Test Case]
On a system running 20.04 LTS:
1) create an additional user who is only a member of their own group e.g.
bdmurray@clean-focal-amd64:~$ id crashy
uid=1001(crashy) gid=1001(crashy) groups=1001(crashy)
2) Launch a process as that user
3) kill -11 that process
4) Confirm there is a crash file in /var/crash for that process
5) Run apport-unpack on that .crash file
With the version of apport from -proposed you will not get another
crash file when unpacking the crash file.
[Regression Potential]
We are just setting UserGroups to ' ' as opposed to having it be completely
empty so there isn't any chance for regression.
When running apport-unpack to get at a core dump
laney@raleigh> sudo apport-unpack
_usr_lib_x86_64-linux-gnu_urfkill_urfkilld.0.crash ~/temp/zozoz
[sudo] password for laney:
Traceback (most recent call last):
File "/usr/bin/apport-unpack", line 73, in <module>
pr.extract_keys(f, bin_keys, dir)
File "/usr/lib/python3/dist-packages/problem_report.py", line 253, in
extract_keys
[item for item, element in b64_block.items() if element is False])
ValueError: ['UserGroups'] has no binary content
laney@raleigh> apport-cli --version
2.16.2
It's not terrible, because most files are unpacked (those which sort
before UserGroups, I guess).
ProblemType: BugDistroRelease: Ubuntu 15.04
Package: apport 2.16.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-7.7-generic 3.19.0
Uname: Linux 3.19.0-7-generic x86_64
ApportLog:
ApportVersion: 2.16.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Mar 3 10:09:26 2015
InstallationDate: Installed on 2012-10-07 (876 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
PackageArchitecture: allSourcePackage: apport
UpgradeStatus: Upgraded to vivid on 2013-05-07 (665 days ago)
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