gsd-print-notifications assert failure: free(): invalid pointer

[Jan Wester]

This problem occurs since upgrade to disco dingo. Have not seen this in earlier releases. It seems to be related to printers in the gnome settings.

janw-LIFEBOOK-AH532-G21{janw}(79)% lsb_release -rd
Description: Ubuntu 19.04
Release: 19.04

apt-cache policy gnome-settings-daemon
gnome-settings-daemon:
  Installerad: 3.32.0-1ubuntu1
  Kandidat: 3.32.0-1ubuntu1
  Versionstabell:
 *** 3.32.0-1ubuntu1 500
        500 http://se.archive.ubuntu.com/ubuntu disco/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Crash
DistroRelease: Ubuntu 19.04
Package: gnome-settings-daemon 3.32.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
AssertionMessage: free(): invalid pointer
CurrentDesktop: ubuntu:GNOME
Date: Tue Apr 23 22:16:13 2019
ExecutablePath: /usr/lib/gnome-settings-daemon/gsd-print-notifications
InstallationDate: Installed on 2018-02-20 (427 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
ProcCmdline: /usr/lib/gnome-settings-daemon/gsd-print-notifications
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=sv_SE.UTF-8
 SHELL=/bin/tcsh
Signal: 6
SourcePackage: gnome-settings-daemon
StacktraceTop:
 __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f247b810952 "%s\n") at ../sysdeps/posix/libc_fatal.c:181
 malloc_printerr (str=str@entry=0x7f247b80ea9b "free(): invalid pointer") at malloc.c:5352
 _int_free (av=<optimized out>, p=<optimized out>, have_lock=<optimized out>) at malloc.c:4181
 ()
 g_list_foreach () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: gsd-print-notifications assert failure: free(): invalid pointer
UpgradeStatus: Upgraded to disco on 2019-04-19 (4 days ago)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo
mtime.conffile..etc.apport.crashdb.conf: 2019-04-24T11:16:47.806271
separator:

[Apport retracing service (apport)]

StacktraceTop:
 __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f247b810952 "%s\n") at ../sysdeps/posix/libc_fatal.c:181
 malloc_printerr (str=str@entry=0x7f247b80ea9b "free(): invalid pointer") at malloc.c:5352
 _int_free (av=<optimized out>, p=<optimized out>, have_lock=<optimized out>) at malloc.c:4181
 free_reason_data (user_data=0x7f246c0014e0) at ../plugins/print-notifications/gsd-print-notifications-manager.c:243
 g_list_foreach (list=<optimized out>, list@entry=0x564a05c2bd80, func=0x564a043b6e90 <free_reason_data>, user_data=user_data@entry=0x0) at ../../../glib/glist.c:1013

[Sebastien Bacher (seb128)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please answer these questions:
* Is this reproducible?
* If so, what specific steps should we take to recreate this bug?

This will help us to find and resolve the problem.

[Jan Wester (j-vester)]

For the moment I do not seem to be able to reproduce this. So I guess it happened when I tried to send the report bug thing in the popup since that popup came because of another crash: _usr_lib_x86_64-linux-gnu_cups-pk-helper-mechanism.125.crash. But since that failed I edited the crashdb conf file. So it CAN be that this doesnt happen anymore. But very uncertain........

That other crash seems to happen every time pressing adding printers

[Sebastien Bacher (seb128)]

The cups-pl-helper error report is https://errors.ubuntu.com/oops/c2dbf84d-6692-11e9-a55b-fa163e102db1

[Jan Wester (j-vester)]

I actually succeeded in getting this dump again. From the gnome settings up in the right corner, choose Test print. The printout went to the printer options and made a test print from the button in the left corner of the windows. That crash appeared in /var/crash despite it looks like everything works......This time I also got another crash at the same time:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[oldfred (oldfred)]

May be related to this bug as printing issues started with it.

https://bugs.launchpad.net/ubuntu/+source/ippusbxd/+bug/1866838

[oldfred (oldfred)]

I seem to be getting both IPv4 & IPv6 with same hostname, so then printer does not connect.
I turned off IPv6 and now it works, but have to release it every time.

sudo nano /etc/cups/cups-browsed.conf
Changed to use only IPv4
# IPBasedDeviceURIs IPv4
IPBasedDeviceURIs IPv4

fred@fred-Z170N-focal:~$ apt show cups
Package: cups
Version: 2.3.1-9ubuntu1
Priority: optional

https://github.com/OpenPrinting/cups-filters/issues/22
https://github.com/lathiat/avahi/issues/125