gnome-appearance-properties crashed with SIGSEGV in pango_shape()

This crash has the same stack trace characteristics as bug #272493. However, the latter was already fixed in an earlier package version than the one in this report. This might be a regression or because the problem is in a dependent package.

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a valgrind log following the instructions at https://wiki.ubuntu.com/Valgrind and attach the file to the bug report. This will greatly help us in tracking down your problem.

terminal output:

(gnome-appearance-properties:7851): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(gnome-appearance-properties:7851): Pango-CRITICAL **: pango_break: assertion `attrs != NULL' failed
Killed

the log has no debug symbols, could you install libglib2.0-0-dbgsym libpango1.0-0-dbgsym libgtk2.0-0-dbgsym gnome-control-center-dbgsym libgnome-desktop-2-7-dbgsym libc6-dbgsym and get a new one? could you also describe how you trigger the crash?

Updated everything and installed these packages.

I try to install icons from this package http://gnome-look.org/content/show.php/GNOME-colors?content=82562

On 1st attempt (with valgrind) I got this output:
(gnome-appearance-properties:10896): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(gnome-appearance-properties:10896): Pango-CRITICAL **: pango_break: assertion `attrs != NULL' failed

(gnome-appearance-properties:10896): Pango-CRITICAL **: pango_context_get_gravity: assertion `context != NULL' failed
Killed

But on 2nd attempt it was different

(gnome-appearance-properties:11036): GLib-GObject-CRITICAL **: g_object_unref: assertion `G_IS_OBJECT (object)' failed

(gnome-appearance-properties:11036): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='DejaVu Sans Bold 11.9990234375', text=''
Segmentation fault (core dumped)

I can't get output as in 2nd attempt using valgrind.
Hope core dump would be helpful

Package version is 2.24.0.1-0ubuntu2

thank you for your efforts on that, the log is weird and seems to indicate a libpango issue. could you change the caller number to 60 and get a new log? do you have similar issues in other applications? what fonts do you use? how do you try to install the icon theme? the capplet doesn't want to install the zip which is to download on the website you indicated

Themes is .tar.gz in the zip

This is a mostly default install, i just installed openjdk and enabled xdmcp.
To reproduce this crash I added new user so settings should be default

Although I use only Firefox and eclipse, I didn't encounter any crashes.

I log in to this host through xdmcp from windows host using xming

xming +extension Composite -once -query test

This crash isn't appears If I remove +extension Composite but it worked fine for hardy and gutsy

I tried to login from computer with intrepid (everything is updated) and it was realy bad. volume and trash applets crashed, nautilus sometimes failed to start and xnest crashed sometimes

do you get the issue using ubuntu locally? what theme do you install and how exactly?

to me it happened while installing icons from mac4lin package, I believe version 0.3

it can be downloaded here,
http://sourceforge.net/project/showfiles.php?group_id=204373&package_id=243878

system > preferences > appearance>theme install

ok, can easy reproduce it by trying to install 3a version:

http://downloads.sourceforge.net/mac4lin/Mac4Lin_Icons_v0.3a_for_GNOME_2.20.tar.gz?modtime=1193882911&big_mirror=0

the theme installs correctly on a beta livecd image, do you get warnings when installing it? do you use ubuntu locally? did you change your font settings? what locale do you use?

Yes my fonts are changed ( I first had run 1.0RC installer http://sourceforge.net/project/showfiles.php?group_id=204373 and then tried to install older version of icon set)

Locale is en_US (not 100% sure, have to check when I get home)

can you try using the default system font and see if you get the bug too?

could you try if that's still an issue using the current intrepid?

Sebastien Bacher schreef:
> could you try if that's still an issue using the current intrepid?
>
I just tried it again and the same error message appeared.

Herbert

could you reply to the previous question about the font you are using? how do you trigger the crash? what libpango1.0-0 version do you have installed exactly?

Sebastien Bacher schreef:
> could you reply to the previous question about the font you are using?
> how do you trigger the crash? what libpango1.0-0 version do you have
> installed exactly?
>
I use the human-clearlooks theme with the dropline-neu
iconset. I haven't changed the font of the theme.
So the fonts are: Sans, Sans bold and Monospace.
The crash is triggered when I try to install a new
theme (tar.bz2 file) using system --> preferences -->
Appearance --> Theme --> Install

I tried several different themes to make sure that
the theme itself is not the problem.

The libpango1.0-0 version I have is: 1.22.1-0ubuntu1

Herbert

un libpango-common <none> (no description available)
un libpango-dev <none> (no description available)
un libpango0 <none> (no description available)
ii libpango1.0-0 1.22.0-0ubuntu1 Layout and rendering of internationalized text
ii libpango1.0-common 1.22.0-0ubuntu1 Modules and configuration files for the Pango
ii libpango1.0-dev 1.22.0-0ubuntu1 Development files for the Pango
un libpango1.0-doc <none> (no description available)
ii libpangomm-1.4-1 2.14.0-1 C++ Wrapper for pango (shared libraries)

I only changed monospace to Pragmata TT font (commercial font, I cannot redistribute)

look is "custom", as I installed mac4lin stuff.

could somebody having the issue open the bug on bugzilla.gnome.org? not sure what is triggering the bug but it doesn't crash on my intrepid installation or when trying on a current intrepid cd image

The crash is triggered when I try to install a new
theme (tar.bz2 file) using system --> preferences -->
Appearance --> Theme --> Install

Yet drag-n-drop installed without error.

Herbert Post ha scritto:
> Sebastien Bacher schreef:
>
>> could you try if that's still an issue using the current intrepid?
>>
>>
> I just tried it again and the same error message appeared.
>
> Herbert
>
>
with the updated intrepid version, the bug never appears again.

It seems to work great now.

Alex

Sebastien Bacher schreef:
> could somebody having the issue open the bug on bugzilla.gnome.org? not
> sure what is triggering the bug but it doesn't crash on my intrepid
> installation or when trying on a current intrepid cd image
>
After installing the latest updates the bug disappeared.

Herbert

ok, thanks a lot!

> From: http://<email address hidden>
> To: http://<email address hidden>
> Date: Wed, 22 Oct 2008 06:25:08 +0000
> Subject: Re: [Bug 274915] Re: gnome-appearance-properties crashed with SIGSEGV in pango_shape()
>
> Herbert Post ha scritto:
> > Sebastien Bacher schreef:
> >
> >> could you try if that's still an issue using the current intrepid?
> >>
> >>
> > I just tried it again and the same error message appeared.
> >
> > Herbert
> >
> >
> with the updated intrepid version, the bug never appears again.
>
> It seems to work great now.
>
> Alex
>
> --
> gnome-appearance-properties crashed with SIGSEGV in pango_shape()
> http://https://bugs.launchpad.net/bugs/274915
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “gnome-control-center” source package in Ubuntu: Incomplete
>
> Bug description:
> Binary package hint: gnome-control-center
>
> Crashed when unpacking new icon theme
>
> ProblemType: Crash
> Architecture: i386
> DistroRelease: Ubuntu 8.10
> ExecutablePath: /usr/bin/gnome-appearance-properties
> Package: gnome-control-center 1:2.24.0.1-0ubuntu1
> ProcAttrCurrent: unconfined
> ProcCmdline: gnome-appearance-properties
> ProcEnviron:
> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
> LANG=ru_RU.UTF-8
> SHELL=/bin/bash
> Signal: 11
> SourcePackage: gnome-control-center
> StacktraceTop:
> pango_shape () from /usr/lib/libpango-1.0.so.0
> ?? () from /usr/lib/libpango-1.0.so.0
> ?? () from /usr/lib/libpango-1.0.so.0
> ?? () from /usr/lib/libpango-1.0.so.0
> ?? () from /usr/lib/libpango-1.0.so.0
> Title: gnome-appearance-properties crashed with SIGSEGV in pango_shape()
> Uname: Linux 2.6.27-4-generic i686
> UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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still crashing when i try to install hydroxygen from gnome-looks.org

and to me many GTK+ theme enfines are missing, so themes do not appear as the should. Themes that are fully compatible with 8.04

Me too, same problem with a lot of themes, with the following message:

(gnome-appearance-properties:9626): Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_set_text()

(gnome-appearance-properties:9626): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='DejaVu Sans Bold 11.9990234375', text=''
Segmentation fault

I am installing themes just copy/paste theme folder in /home/"user"/.icons

Same bug after a vanilla jaunty install.

Bug still persists.
Jaunty with latest updates.

could be the same issue than bug #280484

does anybody still get the issue in the current jaunty?

Yes, Sebastien. I installed a new icon set this morning (after an update and reboot) and it crashed just like before.

you could perhaps get a valgrind log then?

I don't know what that means, sorry.

I can try to send you the log when I go to home...

Sebastien Bacher ha scritto:
> you could perhaps get a valgrind log then?
>

the wiki page explaining how to get a log is in comment #3

Bug still persists in current jaunty.

could you install gnome-control-center-dbgsym and get a new log?

Unfortunately, Ubuntu have no debug package for gnome-control-center.

I've tried to build package with --enable-debug option, but it has been stripped by debian build system. Next i've built it manually and ran "capplets/appearance/.libs/gnome-appearance-properties" and it worked properly!

Then i've applied patches by running 'debian/rules apply-patches'. Program now crashes. Valgrind log is here.

> Unfortunately, Ubuntu have no debug package for gnome-control-center.

ubuntu has debug packages for everything, just add the ddeb source as explained on the wikipage and install binary-dbgsym for whatever binary you need to install

Two fresh installs of Jaunty and this bug persists also I'm not sure if this is because of this bug, but I thought it might be worth mentioning, that I get no preview images in the gnome-appearance-properties when browsing icons some do appear for controls but not all. screenshots:

http://img6.imageshack.us/img6/7742/screenshot0905200903.png
http://img26.imageshack.us/img26/6632/screenshot0905200904.png

Have spent some time trying to reproduce it in Karmic but couldn't.

Could anybody try if that's still an issue in lucid?

I do not see this bug in Lucid

It did for a little while but it doesn't seem to be an issue now.

ok closing based on the fact that this bug kept getting regular duplicates and that stopped in lucid which seems to indicate that's happening there, reopen if you get the issue with the new version though

the bug has new duplicates on lucid, reopening

In current lucid with all updates I can reproduce a segmentation fault in gnome-appearance-properties in the following way:

1) open "Appearance"
2) choose "Dust" theme
3) customize and choose "Human" icon theme
4) go back to main theme tab and choose "ambiance"

5) result: it crashes every single time

Confirm reproduction of crash by following Bernhard's instructions.

the new comments seem a different bug, could you open it using ubuntu-bug to collect the crash?

the new one could be due to the recent changes to update the buttons order

@Sebastien: OK, filed under bug 551048. It's filed against gnome-control-center. Should I file against metacity as well?

Unassigning since the team is not working on those

That configuration dialog is deprecated in GNOME3 and Oneiric so closing the bug, feel free to open new bugs about other issues you might find though