either apport-gtk crashed with SIGSEGV or x-server crashed because of xzgv magnifying

Bug #1754877 reported by Péter Prőhle on 2018-03-10
This bug affects 1 person
Affects Status Importance Assigned to Milestone
apport (Ubuntu)

Bug Description

It happens time to time, when I try to magnify a scanned text-picture in XZGV, suddenly the whole graphical session terminates, I see the monitor in framebuffer character mode, and then I can log in for an other graphical session. Usually I reboot just after this login, and after this reboot I get the crash report possibility, ... this time three in parallel, but only the "apport-gtk crashed with SIGSEGV" out of these was successful to submit a crash report.

This is the reason why the summary is a bit unsure: "either apport-gtk crashed with SIGSEGV or x-server crashed because of xzgv magnifying". I am not sure whether there is any problem with apport-gtk, because it might happen, that only the reboot disturbed it (I make the reboots before any crash report opportunity window shows up).

I think the real problem is, that magnifying a larger picture in XZGV can kill the graphical session, regadless what other jobs wanted to remain alive in it.

(this is 18.04 development branch, and xzgv 0.9.1-4, everything (evrypackage) are fresh up to date)

ProblemType: Crash
DistroRelease: Ubuntu 18.04
Package: apport-gtk 2.20.8-0ubuntu10
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
Uname: Linux 4.15.0-10-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Sat Mar 10 19:30:33 2018
ExecutablePath: /usr/share/apport/apport-gtk
ExecutableTimestamp: 1518540671
InstallationDate: Installed on 2017-07-13 (240 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
InterpreterPath: /usr/bin/python3.6
 -- Logs begin at Fri 2018-03-09 12:38:41 CET, end at Sat 2018-03-10 19:35:01 CET. --
 Mar 10 19:32:21 pc56 spice-vdagent[1670]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0
 Mar 10 19:32:21 pc56 pulseaudio[1703]: [pulseaudio] pid.c: Daemon already running.
 Mar 10 19:32:46 pc56 pulseaudio[1499]: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Error.TimedOut: Failed to activate service 'org.bluez': timed out (service_start_timeout=25000ms)
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk
ProcCwd: /home/prohlep
Python3Details: /usr/bin/python3.6, Python 3.6.4+, python3-minimal, 3.6.4-1
PythonDetails: /usr/bin/python2.7, Python 2.7.14+, python-minimal, 2.7.14-4
 Segfault happened at: 0x7f43f443e5a9: mov (%rbx),%rdi
 PC (0x7f43f443e5a9) ok
 source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: apport
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 () at /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
Title: apport-gtk crashed with SIGSEGV
UpgradeStatus: Upgraded to bionic on 2018-03-09 (1 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

Péter Prőhle (prohlep) wrote :

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1552577, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.

information type: Private → Public
tags: removed: need-amd64-retrace
Péter Prőhle (prohlep) wrote :

Half of this bug is the duplicate of https://bugs.launchpad.net/bugs/1754885
and NOT of https://bugs.launchpad.net/bugs/1552577 SINCE in 1552577 and 1754885 the situations what caus the problems are different, only the resulting signal is the same.

The other half of this bug is the duplicate of https://bugs.launchpad.net/bugs/1754887

During the creation of this error report it was not clear, which report of the three parallel reports remained alive. But later experiments made me clear the situation, and therefore later I allowed the apport-gtk produce the SEPARATE much more precise reports 1754885 and 1754887.

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