MASTER: [apport] gnome-cups-manager crashed with SIGSEGV in g_signal_emit_valist()

[Ted]

Binary package hint: gnome-cups-manager

This problem occurs only on 64-bit PCs

Clicking two or more icons in the gnome-cups-manager having the "New Printer" icon in the sequence crashes the gnome-cups-manager.

New Printer -> New Printer ==> Crash
New Printer -> Printer ==> Crash
Printer -> New Printer ==> Crash
Printer -> Printer -> Printer -> New Printer ==> Crash
Printer -> Printer -> Printer -> Printer -> Printer -> Printer -> Printer ==> No Crash

It does not matter whether with "New Printer" a print queue was created or whether the add printer wizard was canceled or whether the second icon in the gnome-cups-manager was already clicked while the add printer wizard was still loading the printer database.

Original report:

My samsung ml-2250 worked fine as wireless printer in edgy eft. does not work in fiesty fawn.

ProblemType: Crash
Architecture: amd64
Date: Sat Mar 10 14:37:50 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-cups-manager
Package: gnome-cups-manager 0.31-3ubuntu3
PackageArchitecture: amd64
ProcCmdline: gnome-cups-manager
ProcCwd: /root
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-cups-manager
StacktraceTop:
 ?? () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit_valist ()
 g_signal_emit () from /usr/lib/libgobject-2.0.so.0
 ?? ()
 _gtk_marshal_BOOLEAN__BOXED ()
Uname: Linux ted-desktop 2.6.20-9-generic #2 SMP Sun Feb 25 22:59:06 UTC 2007 x86_64 GNU/Linux
UserGroups: admin

[Daniel Holbach (dholbach)]

Thanks for your bug report.

[Apport retracing service (apport)]

StacktraceTop:IA__g_signal_emit_valist (instance=0x85f1c0, signal_id=<value optimized out>, detail=0, var_args=0x7ffff835b2e0) at gsignal.c:2174
IA__g_signal_emit (instance=0x873c10, signal_id=10168192, detail=4164268576) at gsignal.c:2243
egg_icon_list_button_press (widget=0x85f1c0, event=0xb8a400) at eggiconlist.c:850
_gtk_marshal_BOOLEAN__BOXED_BOXED (closure=0x678630, return_value=0x7ffff835b5b0, n_param_values=<value optimized out>, param_values=0x7ffff835b6a0,

[Till Kamppeter (till-kamppeter)]

Seems that gnome-cups-manager currently does not work for most of the 64-bit users, therefore setting to "High".

[Till Kamppeter (till-kamppeter)]

On 32-bit the problem does not occur.

[Daniel Holbach (dholbach)]

Looking at the trace, it might be a libegg problem:

#3 0x000000000040c0bf in egg_icon_list_button_press (widget=0x8599a0, event=0x735800) at eggiconlist.c:850
        icon_list = (EggIconList *) 0x8599a0
        item = (EggIconListItem *) 0x0
        dirty = 0

The copy of libegg bits in gnome-cups-manager look very different from http://svn.gnome.org/viewcvs/libegg/trunk/

[Daniel Holbach (dholbach)]

The bug does not happen when building the packaging with 'noopt'. Maybe a wrong variable initialization.

[Till Kamppeter (till-kamppeter)]

What means "building the packaging with 'noopt'"?

[Martin Pitt (pitti)]

Till Kamppeter [2007-03-28 13:07 -0000]:
> What means "building the packaging with 'noopt'"?

DEB_BUILD_OPTIONS=noopt,nostrip debuild -us -uc -b

builds with -O0 -g ('noopt') and does not strip debug symbols from the
.debs ('nostrip')

[Till Kamppeter (till-kamppeter)]

Can I also do this by putting something into the debian/rules file? Otherwise the next one who builds the package will forget to use these options and the bug occurs again.

[Daniel Holbach (dholbach)]

Yes, you can. That's the workaround we should use until we track that bug down.

[Martin Pitt (pitti)]

Hi,

Daniel Holbach [2007-03-28 14:49 -0000]:
> Yes, you can. That's the workaround we should use until we track that
> bug down.

No, please by no means ever ever do this. DEB_BUILD_OPTIONS should not
be set in debian/rules. The proper thing to do here is to set CFLAGS
to -O0 (or -O1, or similar).

[Sebastien Bacher (seb128)]

This upload workaround the bug:

 gnome-cups-manager (0.31-3ubuntu4) feisty; urgency=low
 .
   * debian/gnome-cups-manager.desktop, debian/gnome-cups-manager.desktop.in:
     - use system category
   * debian/patches/37_transparent_notification_icon.patch:
     - notification area works with transparency (Ubuntu: #70213)
   * debian/rules:
     - use "OPTFLAGS=-O0" on amd64 to workaround launchpad crash #91218

[Till Kamppeter (till-kamppeter)]

Sebastien, unfortunately, your new package does not reliably work around this problem. See bug 102199.

[Sebastien Bacher (seb128)]

This new update has the change:

 gnome-cups-manager (0.31-3ubuntu5) feisty; urgency=low
 .
   * debian/rules:
     - use -O0 on amd64, workaround launchpad #91218

[Sebastien Bacher (seb128)]

dropping milestone and lowering importance since the crash has been workarounded

[Henrik Nilsen Omma (henrik)]

We have changed the default print management system in Ubuntu from gnome-cups-manager to system-config-printer because g-c-m is no longer maintained. Please report future printing bugs against system-config-printer.