Bug#251061: gnome-panel: Strange panel freeze

Alex Owen Alex Owen <rao3@leicester.ac.uk>, 251061@bugs.debian.org
Wed, 26 May 2004 18:00:27 +0100


Package: gnome-panel
Version: 2.4.2-5
Severity: normal

The panel freezes about 4 times a working day. I'm not sure where teh
bug is (in gnome-panel or else where) but I need help debugging it.

So far I can tell when it is "about" to happen. I use epiphany web
browser and when that crashes/freezes I know the pannel is about to too!

I have done an strace on gnome-panel when I know it is "about" to happen
then I click on a button in the panel and sure enough the panel stops
working. the end of the strace at that point looks like this:
---8<---
gettimeofday({1085572663, 490956}, NULL) = 0
poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN, revents=POLLIN},
{fd=8, events=POLLIN|POLLPRI}, {fd=10, events=POLLIN}, {fd=13,
events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=15,
events=POLLIN|POLLPRI}, {fd=17, events=POLLIN|POLLPRI}, {fd=16,
events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=19,
events=POLLIN|POLLPRI}, {fd=20, events=POLLIN|POLLPRI}, {fd=21,
events=POLLIN|POLLPRI}, {fd=22, events=POLLIN|POLLPRI}], 14, 396) = 1
ioctl(3, FIONREAD, [64])                = 0
read(3, "\5\1s\'\247\f4\0@\0\0\0\246\0\340\0\0\0\0\0\27\1\23\0\24"...,
64) = 64
gettimeofday({1085572663, 516962}, NULL) = 0
rt_sigaction(SIGPIPE, {0x409737a0, [PIPE], SA_RESTORER|SA_RESTART,
0x40a78658}, {SIG_IGN}, 8) = 0
write(18, "\10\0\0\0", 4)               = 4
write(18, "\4\0\0\0", 4)                = 4
read(18,
---8<---

using lsof I have detirmined that File desriptor 18 is a unix socket

# lsof -p<PID-of-gnome-panel> | grep 18
gnome-pan 16649 rao3   18u  unix 0xc8abb580           607402 socket

I don't know how to find out what is/was/should-have-been on the other
end of that socket... I suspect that the bug is actually in what ever
should have been on the otehr end of the socket or at least something
like that...

Any one have any ideas on how I can get more info on this...
I have not found a way to reproduce this.


Any ideas welcome.
Sorry for the sketchy bug report.
Alex Owen


-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.4.26-1-686
Locale: LANG=en_GB, LC_CTYPE=en_GB

Versions of packages gnome-panel depends on:
ii  gnome-control-center      1:2.4.0-9      The GNOME Control Center for GNOME
ii  gnome-desktop-data        2.4.1-9        Common files for GNOME 2 desktop a
ii  gnome-panel-data          2.4.2-5        Common files for GNOME 2 panel
ii  gnome-session             2.4.2-5        The GNOME 2 Session Manager
ii  libart-2.0-2              2.3.16-5       Library of functions for 2D graphi
ii  libatk1.0-0               1.4.1-1        The ATK accessibility toolkit
ii  libaudiofile0             0.2.6-3        Open-source version of SGI's audio
ii  libbonobo2-0              2.4.3-1        Bonobo CORBA interfaces library
ii  libbonoboui2-0            2.4.3-2        The Bonobo UI library
ii  libc6                     2.3.2.ds1-12   GNU C Library: Shared libraries an
ii  libesd0                   0.2.29-1       Enlightened Sound Daemon - Shared 
ii  libgconf2-4               2.4.0.1-4      GNOME configuration database syste
ii  libgcrypt1                1.1.12-4       LGPL Crypto library - runtime libr
ii  libglade2-0               1:2.0.1-13     Library to load .glade files at ru
ii  libglib2.0-0              2.2.3-1        The GLib library of C routines
ii  libgnome-desktop-2        2.4.1-9        Utility library for loading .deskt
ii  libgnome2-0               2.4.0-11       The GNOME 2 library - runtime file
ii  libgnomecanvas2-0         2.4.0-3        A powerful object-oriented display
ii  libgnomeui-0              2.4.0.1-12     The GNOME 2 libraries (User Interf
ii  libgnomevfs2-0            2.4.1-5        The GNOME virtual file-system libr
ii  libgnomevfs2-common       2.4.1-5        The GNOME virtual file-system libr
ii  libgnutls7                0.8.12-5       GNU TLS library - runtime library
ii  libgtk2.0-0               2.2.4-6        The GTK+ graphical user interface 
ii  libice6                   4.3.0.dfsg.1-1 Inter-Client Exchange library
ii  libjpeg62                 6b-9           The Independent JPEG Group's JPEG 
ii  liborbit2                 1:2.8.3-2      libraries for ORBit2 - a CORBA ORB
ii  libpanel-applet2-0        2.4.2-5        Library for GNOME 2 Panel applets
ii  libpango1.0-0             1.2.5-5        Layout and rendering of internatio
ii  libpng12-0                1.2.5.0-6      PNG library - runtime
ii  libpopt0                  1.7-4          lib for parsing cmdline parameters
ii  libsm6                    4.3.0.dfsg.1-1 X Window System Session Management
ii  libstartup-notification0  0.6-2          library for program launch feedbac
ii  libtasn1-0                0.1.2-2        Manage ASN.1 structures (runtime)
ii  libwnck4                  2.4.0.1-4      Window Navigator Construction Kit 
ii  libx11-6                  4.3.0.dfsg.1-1 X Window System protocol client li
ii  libxext6                  4.3.0.dfsg.1-1 X Window System miscellaneous exte
ii  libxml2                   2.6.9-2        GNOME XML library
ii  xlibs                     4.3.0.dfsg.1-1 X Window System client libraries m
ii  zlib1g                    1:1.2.1-5      compression library - runtime

-- no debconf information