xfdesktop crashed with SIGSEGV in g_type_check_instance_is_a()

[David Kastrup]

Bug text superficially is that of #733822 but that one is supposed to be fixed for a long time.

ProblemType: Crash
DistroRelease: Ubuntu 19.10
Package: xfdesktop4 4.14.1-1
ProcVersionSignature: Ubuntu 5.3.0-10.11-lowlatency 5.3.0-rc8
Uname: Linux 5.3.0-10-lowlatency x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: XFCE
Date: Thu Sep 26 20:31:01 2019
ExecutablePath: /usr/bin/xfdesktop
InstallationDate: Installed on 2011-10-14 (2904 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
ProcCmdline: xfdesktop --display :0.0 --sm-client-id 2f1767d95-cd68-4ef9-8cc1-b6f11f43976c
SegvAnalysis:
 Segfault happened at: 0x7fc8d243b0b0 <g_type_check_instance_is_a+64>: testb $0x4,0x16(%rax)
 PC (0x7fc8d243b0b0) ok
 source "$0x4" ok
 destination "0x16(%rax)" (0x10000020a) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: xfdesktop4
StacktraceTop:
 g_type_check_instance_is_a () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ()
 g_closure_invoke () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () at /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: xfdesktop crashed with SIGSEGV in g_type_check_instance_is_a()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio cdrom dialout fax floppy lpadmin lxd plugdev pulse-access sambashare
separator:

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_is_a () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 xfce_backdrop_loader_closed_cb (loader=0x55dfa7dbb120, image_data=0x55dfa7e149d0) at xfce-backdrop.c:1787
 g_closure_invoke () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 signal_emit_unlocked_R () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /tmp/apport_sandbox_ybs2mi8i/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0

[Launchpad Janitor (janitor)]

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

[Sean Davis (bluesabre)]

Xubuntu 19.10 is EOL. Marking this ticket as closed. If you are able to reproduce in a recent supported release (focal, impish, jammy), please reopen this ticket or create a new one. Thanks!