Ubuntu
pycairo package

python2.7 assert failure: python: /build/buildd/cairo-1.10.2/src/cairo-surface.c:614: cairo_surface_reference: asserzione \"((*&(&surface->ref_count)->ref_count) > 0)\" non riuscita.

Bug #959570 reported by Davide Depau on 2012-03-19

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	BashKaraoke	In Progress	High	Davide Depau
	pycairo (Ubuntu)	Incomplete	Medium	Unassigned

Bug Description

I was trying my program with python. In this program I use GTK3 (gi.repository.Gtk), and I have a Glade interface, with a spinner. I looked for a method to start the spinner, and I found Gtk.Spinner().start(). I added the line in the program, and the problem occurred. This is the stdout:

python: /build/buildd/cairo-1.10.2/src/cairo-surface.c:614: cairo_surface_reference: asserzione "((*&(&surface->ref_count)->ref_count) > 0)" non riuscita.
Annullato (core dump creato)

Translation to English:
python: /build/buildd/cairo-1.10.2/src/cairo-surface.c:614: cairo_surface_reference: assertion "((*&(&surface->ref_count)->ref_count) > 0)" failed.
Canceled (core dump created).

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python2.7-minimal 2.7.3~rc1-1ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
AssertionMessage: python: /build/buildd/cairo-1.10.2/src/cairo-surface.c:614: cairo_surface_reference: asserzione \"((*&(&surface->ref_count)->ref_count) > 0)\" non riuscita.
CheckboxSubmission: 491d231809a79db91e50777815c1b601
CheckboxSystem: b845c366ea09c60efa3a45c1b5b21525
Date: Mon Mar 19 19:09:28 2012
ExecutablePath: /usr/bin/python2.7
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcCmdline: python bashkaraoke-gtk-new.py
Signal: 6
SourcePackage: python2.7
StacktraceTop:
__assert_fail_base (fmt=<optimized out>, assertion=0x7f92c05365b0 "((*&(&surface->ref_count)->ref_count) > 0)", file=0x7f92c0536580 "/build/buildd/cairo-1.10.2/src/cairo-surface.c", line=<optimized out>, function=<optimized out>) at assert.c:94
__GI___assert_fail (assertion=0x7f92c05365b0 "((*&(&surface->ref_count)->ref_count) > 0)", file=0x7f92c0536580 "/build/buildd/cairo-1.10.2/src/cairo-surface.c", line=614, function=0x7f92c0536940 "cairo_surface_reference") at assert.c:103
cairo_surface_reference () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
Title: python2.7 assert failure: python: /build/buildd/cairo-1.10.2/src/cairo-surface.c:614: cairo_surface_reference: asserzione \"((*&(&surface->ref_count)->ref_count) > 0)\" non riuscita.
UpgradeStatus: Upgraded to precise on 2012-02-16 (31 days ago)
UserGroups: adm admin cdrom debian-tor dialout lpadmin plugdev sambashare vboxusers

Tags:

Revision history for this message

Davide Depau (depau) wrote on 2012-03-19:

Dependencies.txt Edit (466 bytes, text/plain; charset="utf-8")
Disassembly.txt Edit (954 bytes, text/plain; charset="utf-8")
ProcEnviron.txt Edit (247 bytes, text/plain; charset="utf-8")
ProcMaps.txt Edit (53.6 KiB, text/plain; charset="utf-8")
ProcStatus.txt Edit (824 bytes, text/plain; charset="utf-8")
Registers.txt Edit (756 bytes, text/plain; charset="utf-8")
Stacktrace.txt Edit (4.3 KiB, text/plain; charset="utf-8")
ThreadStacktrace.txt Edit (10.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Davide Depau (depau) wrote on 2012-03-19:

This is the script I was running while Python crashed. You need Bash!Karaoke to be installed. Edit (74.5 KiB, text/x-python)

Revision history for this message

Davide Depau (depau) wrote on 2012-03-19:

This script is needed by the script I posted before Edit (15.8 KiB, text/x-python)

Revision history for this message

Apport retracing service (apport) wrote on 2012-03-19:

StacktraceTop:
__assert_fail_base (fmt=<optimized out>, assertion=0x7f92c05365b0 "((*&(&surface->ref_count)->ref_count) > 0)", file=0x7f92c0536580 "/build/buildd/cairo-1.10.2/src/cairo-surface.c", line=<optimized out>, function=<optimized out>) at assert.c:94
__GI___assert_fail (assertion=0x7f92c05365b0 "((*&(&surface->ref_count)->ref_count) > 0)", file=0x7f92c0536580 "/build/buildd/cairo-1.10.2/src/cairo-surface.c", line=614, function=0x7f92c0536940 "cairo_surface_reference") at assert.c:103
cairo_surface_reference (surface=<optimized out>) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:614
cairo_surface_reference (surface=<optimized out>) at /build/buildd/cairo-1.10.2/src/cairo-surface.c:608
?? ()

Revision history for this message

Apport retracing service (apport) wrote on 2012-03-19: Stacktrace.txt

Stacktrace.txt Edit (3.7 KiB, text/plain)

Revision history for this message

Apport retracing service (apport) wrote on 2012-03-19: ThreadStacktrace.txt

ThreadStacktrace.txt Edit (7.3 KiB, text/plain)

Changed in python2.7 (Ubuntu):
importance:	Undecided → Medium
tags:	removed: need-amd64-retrace

Davide Depau (depau) on 2012-03-23

Changed in bashkaraoke:
assignee:	nobody → Davide Depau (davidedepau1996)
importance:	Undecided → Critical
importance:	Critical → High

Davide Depau (depau) on 2012-03-25

visibility:

private → public

Revision history for this message

Davide Depau (depau) wrote on 2012-03-30:

Problem solved by upgrading to python3.2

Changed in bashkaraoke:
status:	New → Fix Committed
importance:	High → Undecided
importance:	Undecided → High

Matthias Klose (doko) on 2012-04-04

affects:

python2.7 (Ubuntu) → pycairo (Ubuntu)

Davide Depau (depau) on 2012-04-11

Changed in bashkaraoke:
status:	Fix Committed → In Progress

Revision history for this message

Davide Depau (depau) wrote on 2012-04-11:

New similar errors...
I'll try to remove the spinner, run the program again and see if it works. Please look the following file for programming errors:
http://bazaar.launchpad.net/~bashkaraoke-dev/bashkaraoke/bashkaraoke-gtk/view/head:/src/bashkaraoke-gtk-new.py

ERRORS:
(bashkaraoke-gtk-new.py:407): Gtk-CRITICAL **: _gtk_css_value_ref: assertion `value != NULL' failed

(bashkaraoke-gtk-new.py:407): Gtk-CRITICAL **: _gtk_css_value_ref: assertion `value != NULL' failed

(bashkaraoke-gtk-new.py:407): Gtk-CRITICAL **: _gtk_css_value_ref: assertion `value != NULL' failed
Errore di segmentazione (core dump creato)

-------------------------------------------------------------------------------------------------------------------------------------

(bashkaraoke-gtk-new.py:15205): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='Ubuntu Light 60', text=''

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_layout_is_wrapped: assertion `layout != NULL' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_layout_is_ellipsized: assertion `layout != NULL' failed
/usr/lib/python2.7/dist-packages/gi/types.py:43: Warning: g_object_ref: assertion `G_IS_OBJECT (object)' failed
return info.invoke(*args, **kwargs)

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_layout_get_extents: assertion `layout != NULL' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_layout_get_context: assertion `layout != NULL' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_context_get_language: assertion `context != NULL' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_context_get_metrics: assertion `PANGO_IS_CONTEXT (context)' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_font_metrics_get_ascent: assertion `metrics != NULL' failed

(bashkaraoke-gtk-new.py:15205): Pango-CRITICAL **: pango_font_metrics_get_descent: assertion `metrics != NULL' failed