mate-panel crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

[Tiago M. C.]

A bug fix update for mate-panel is requesting an SRU for Xenial Xerus. Here are the changes:

mate-panel (1.12.2-3) xenial; urgency=medium

  * debian/patches:
    + Add 1000_fix_panel_start.patch. Closes (LP: #1498666)

 -- Martin Wimpress <email address hidden> Mon, 23 May 2016 23:06:26 +0100

[Impact]

 * mate-panel a segfaulting at start up, as discussed here: https://github.com/mate-desktop/mate-panel/issues/431

[Test Cases]

 * Install Ubuntu MATE 16.04. You may encounter intermittent mate-panel crashes.

[Regression Potential]

 * Possibly none.

mate-panel crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()

ProblemType: Crash
DistroRelease: Ubuntu 15.10
Package: mate-panel 1.10.1+gfdl1-1
ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
Uname: Linux 4.2.0-10-generic x86_64
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
CurrentDesktop: MATE
Date: Tue Sep 22 18:05:12 2015
ExecutablePath: /usr/bin/mate-panel
InstallationDate: Installed on 2015-08-21 (32 days ago)
InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcCmdline: mate-panel
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f24f191d3e5 <g_type_check_instance_is_fundamentally_a+5>: mov (%rdi),%rax
 PC (0x7f24f191d3e5) ok
 source "(%rdi)" (0x00000006) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: mate-panel
StacktraceTop:
 g_type_check_instance_is_fundamentally_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? ()
 g_simple_async_result_complete () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 ?? ()
Title: mate-panel crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

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 #1371069, 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.

[Launchpad Janitor (janitor)]

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

[Sora Celestinia (celestinia)]

The bug page #1371069 doesn't exist or is private. Because it is unavailable, we can't report a new bug. A new bug report of this issue is needed.

[Vlad Orlov (monsta)]

Unfortunately, the possible fix that I gave to the upstream reporter didn't work for him at all. So this isn't ready for SRU. I'll try to make a better fix.

Upstream report: https://github.com/mate-desktop/mate-panel/issues/431

[Vlad Orlov (monsta)]

As bug 1371069 is now public, let's move there. I've attached the patch for this issue there.