gnome-settings-daemon crashed with SIGSEGV in xkl_engine_ensure_vtable_inited()

Bug #546927 reported by Jan Hülsbergen on 2010-03-25
240
This bug affects 42 people
Affects Status Importance Assigned to Milestone
libgnomekbd
Fix Released
Medium
libgnomekbd (Ubuntu)
Medium
Unassigned
Lucid
Low
Unassigned

Bug Description

Binary package hint: gnome-settings-daemon

switched the theme in 'Appearance', then came the crash (new theme was visible just a fraction of a second)

ProblemType: Crash
Architecture: amd64
Date: Thu Mar 25 15:22:37 2010
DistroRelease: Ubuntu 10.04
ExecutablePath: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
Package: gnome-settings-daemon 2.29.92-0ubuntu3
ProcCmdline: /usr/lib/gnome-settings-daemon/gnome-settings-daemon
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
SegvAnalysis:
 Segfault happened at: 0x7fd828a65ea4 <xkl_engine_ensure_vtable_inited+4>: mov 0x18(%rdi),%rax
 PC (0x7fd828a65ea4) ok
 source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
 destination "%rax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-settings-daemon
StacktraceTop:
 xkl_engine_ensure_vtable_inited ()
 xkl_engine_get_num_groups ()
 ?? () from /usr/lib/libgnomekbdui.so.4
 gkbd_status_reinit_ui ()
 g_closure_invoke ()
Title: gnome-settings-daemon crashed with SIGSEGV in xkl_engine_ensure_vtable_inited()
Uname: Linux 2.6.32-17-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

Jan Hülsbergen (jan-afoo) wrote :

StacktraceTop:
 xkl_engine_ensure_vtable_inited (engine=0x0) at xklavier.c:508
 xkl_engine_get_num_groups (engine=0x0)
 gkbd_status_fill (gki=<value optimized out>)
 gkbd_status_reinit_ui (gki=0x239f650)
 g_closure_invoke ()

Changed in gnome-settings-daemon (Ubuntu):
importance: Undecided → Medium
tags: removed: need-amd64-retrace
Jan Hülsbergen (jan-afoo) wrote :

just wanted to add a note that this keeps happening to me at least a few times a day

visibility: private → public

Same for me here on i386 and Kernel 2.6.32-19-generic.

Jan Hülsbergen (jan-afoo) wrote :

one of the updates over the last few days seems to have fixed this for me. Don't know about the other 8 people so I'm not closing the bug.

Tordj (tord-jansson) wrote :

Got exactly the same crash on April 5, with the exception that I was NOT playing around with themes, I was installing Ubuntu Restricted Extras from Synaptics.

My original bug report is available here: https://bugs.launchpad.net/bugs/555555

wilfred_com (wilfredcom) wrote :

I'm doing a simple installation:

sudo aptitude install quanta

affects: gnome-settings-daemon (Ubuntu) → libgnomekbd (Ubuntu)
Sebastien Bacher (seb128) wrote :

Thanks for your bug report. This bug has been reported to the developers of the software. You can track it and make comments here: https://bugzilla.gnome.org/show_bug.cgi?id=615832

Changed in libgnomekbd (Ubuntu):
status: New → Triaged
Changed in libgnomekbd:
status: Unknown → New
Sebastien Bacher (seb128) wrote :

upstream bug comment

"Would it be possible to run (and crash!) g-s-d with --nodaemon and
XKL_DEBUG=160? Please attach the resulting output here (especially the lines
before the crash)."

Changed in libgnomekbd (Ubuntu):
status: Triaged → Incomplete
Changed in libgnomekbd:
status: New → Incomplete
Hansen (moteprime) wrote :

 " "Would it be possible to run (and crash!) g-s-d with --nodaemon and XKL_DEBUG=160? Please attach the resulting output here (especially the lines before the crash)." "

I would be happy to try, but i need at more information about how to do it.

@mote: At a terminal, type

XKL_DEBUG=160 gnome-settings-daemon --no-daemon

Instructions for reproducing this bug:

1. Boot Ubuntu 10.04 from the LiveCD. Don't change the language; leave it as English. This will make the default keyboard layout "USA" later.
2. Wait for the GNOME desktop to fully load.
3. System > Preferences > Keyboard. Select the Layouts tab, add a random layout, then remove "USA". Click Close. (Not removing the first layout works around this bug.)
4. System > Preferences > Appearance. Change ANYTHING. (Change the theme, or the desktop background, or the font.)
5. Asynchronous crash of gnome-settings-daemon. It takes 5 seconds usually, but after this, the theme changes to something like Redmond in all applications.

I think "XKL_DEBUG=160 gnome-settings-daemon --no-daemon" should be typed before Step 3 above.

Changed in libgnomekbd (Ubuntu):
status: Incomplete → Confirmed
Changed in libgnomekbd (Ubuntu):
status: Confirmed → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package libgnomekbd - 2.30.2-0ubuntu1

---------------
libgnomekbd (2.30.2-0ubuntu1) maverick; urgency=low

  * New upstream version:
    A couple of translations updated
    Proper location in NA is provided
    Fixed three crashers (lp: #546927)
  * debian/patches/02_layout_crash.patch:
    - the change is in the new version
 -- Sebastien Bacher <email address hidden> Tue, 22 Jun 2010 23:41:03 +0200

Changed in libgnomekbd (Ubuntu):
status: Fix Committed → Fix Released
Changed in libgnomekbd (Ubuntu Lucid):
importance: Undecided → Low
status: New → Fix Committed
Changed in libgnomekbd:
status: Incomplete → Fix Released
Sebastien Bacher (seb128) wrote :

Accepted libgnomekbd into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

tags: added: verification-needed

Using the instructions from comment 14, I can reproduce this crash in lucid main, but not in lucid proposed.

tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package libgnomekbd - 2.30.2-0ubuntu0.1

---------------
libgnomekbd (2.30.2-0ubuntu0.1) lucid-proposed; urgency=low

  * New upstream version:
    A couple of translations updated
    Proper location in NA is provided
    Fixed three crashers (lp: #546927)
  * debian/patches/02_layout_crash.patch:
    - the change is in the new version
 -- Sebastien Bacher <email address hidden> Tue, 22 Jun 2010 23:41:03 +0200

Changed in libgnomekbd (Ubuntu Lucid):
status: Fix Committed → Fix Released
Changed in libgnomekbd:
importance: Unknown → Medium
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