BTW I happened to have an Eoan VM laying around and tested it out and
found the same problem. so this has actually been long standing. We'll
see what upstream says.
** Package changed: lxqt-admin (Ubuntu) => lxqt-policykit (Ubuntu)
** Changed in: lxqt-policykit (Ubuntu)
Importance: Undecided => High
** Changed in: lxqt-policykit (Ubuntu)
Status: Confirmed => Triaged
** Bug watch added: github.com/lxqt/lxqt-policykit/issues #105
https://github.com/lxqt/lxqt-policykit/issues/105
** Also affects: lxqt via
https://github.com/lxqt/lxqt-policykit/issues/105
Importance: Unknown
Status: Unknown
** Summary changed:
- Lubuntu 20.04 lxqt-admin-user Action (usermod) failed
+ lxqt-policykit crashes with general protection fault in libgobject-2.0
** Description changed:
- This is testing was performed as a result of a user support request on a
- fresh install (screen position & wallpaper changed; nfs-common added &
- that's about all)
+ STEPS TO REPRODUCE
+ ==================
+ 1. Boot post-18.04 Lubuntu
+ 2. Use lxqt-admin-user to create a second user (let's call it user2)
+ 3. Use lxqt-admin-user to add user2 to sudo
+ 4. Logout and back in again (yes, this is a requirement to reproduce— if you
want, you can first remove user2's sudo and it will work, but then add it back
and continue on)
+ 5. User lxqt-admin-user to try to remove user2's membership in the sudo
group (fail)
+ 6. Try running pkexec against something. Since synaptic is well set up for
it, this is a good example, so install synaptic and run `synaptic-pkexec` (fail)
+ 7. Remove user2's membership in the sudo group for sure with `sudo usermod
-G "" user2`
+ 8. Try running the pkexec command again (success)
- https://discourse.lubuntu.me/t/no-authorization-after-adding-user/1033/
+ EXPECTED RESULT
+ ===============
+ Both the pkexec and the lxqt-admin-user change succeed without crashing.
- A new user was added "pw_admin", logout & some testing done without
- issue.
-
- I logged back in as me and tried to remove "sudo" rights from "pw_admin"
- user logged in as "guiverc" which is where I first had noticed this
- error.
-
- On testing, it appears to occur on retracting/removing rights rather
- than adding them, and after the privileges are added only (though my
- testing is incomplete; takes awhile for rights to drop & thus be asked
- again; no issue if elevated-privileges already exists it so far appears
- to me)
-
- Expected Result:
-
- The 'sudo' permission gets removed
-
- Actual Result:
-
- I get an error show in discourse site, or uploaded here
-
- When the error pop-up (
-
- "Action (usermod) failed:
- Error executing command as another user: Not authorized
- This incident has been report" occurs
-
- the following is written to `dmesg` output
-
- [ 764.849494] traps: lxqt-policykit-[1598] general protection fault
- ip:7f8c94773671 sp:7ffc5acf6618 error:0 in
- libgobject-2.0.so.0.6400.2[7f8c94745000+36000]
-
- and in /var/crash/ (it was submitted)
- -rw-r----- 1 guiverc whoopsie 3.2M Apr 29 11:37
_usr_bin_lxqt-policykit-agent.1000.crash
+ ACTUAL RESULT
+ =============
+ lxqt-policykit crashes, e.g:
+ [ 764.849494] traps: lxqt-policykit-[1598] general protection fault
ip:7f8c94773671 sp:7ffc5acf6618 error:0 in
libgobject-2.0.so.0.6400.2[7f8c94745000+36000]
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: lxqt-admin 0.14.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-28.32-generic 5.4.30
Uname: Linux 5.4.0-28-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: LXQt
Date: Wed Apr 29 12:04:34 2020
InstallationDate: Installed on 2020-04-28 (0 days ago)
InstallationMedia: Lubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: lxqt-admin
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/bugs/1875774
Title:
lxqt-policykit crashes with general protection fault in libgobject-2.0
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