gdm enters an infinite busywait loop upon entering password and striking enter
Samium Gromoff
_deepfire at feelingofgreen.ru
Sat Dec 16 16:53:29 UTC 2006
Package: gdm
Version: 2.17.3-0ubuntu3
Severity: critical
Justification: breaks the whole system
Upon satisfying gdmgreeter with login/password, the third instance of
the gdm process is launched, which enters an infinite busywait loop,
presenting the user with a box of a solid white color.
Attaching a strace to the runaway gdm process reveals this:
....
ioctl(3, FIONREAD, [0]) = 0
poll([{fd=3, events=POLLIN}, {fd=3, events=POLLIN|POLLPRI}, {fd=6, events=POLLIN|POLLPRI, revents=POLLNVAL}], 3, 0) = 1
ioctl(3, FIONREAD, [0]) = 0
poll([{fd=3, events=POLLIN}, {fd=3, events=POLLIN|POLLPRI}, {fd=6, events=POLLIN|POLLPRI, revents=POLLNVAL}], 3, 0) = 1
ioctl(3, FIONREAD, [0]) = 0
poll([{fd=3, events=POLLIN}, {fd=3, events=POLLIN|POLLPRI}, {fd=6, events=POLLIN|POLLPRI, revents=POLLNVAL}], 3, 0) = 1
ioctl(3, FIONREAD, [0]) = 0
poll([{fd=3, events=POLLIN}, {fd=3, events=POLLIN|POLLPRI}, {fd=6, events=POLLIN|POLLPRI, revents=POLLNVAL}], 3, 0) = 1
ioctl(3, FIONREAD, [0]) = 0
poll([{fd=3, events=POLLIN}, {fd=3, events=POLLIN|POLLPRI}, {fd=6, events=POLLIN|POLLPRI, revents=POLLNVAL}], 3, 0) = 1
ioctl(3, FIONREAD, [0]) = 0
....
-- System Information:
Debian Release: testing/unstable
APT prefers feisty
APT policy: (500, 'feisty')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-mm3-betelheise
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages gdm depends on:
ii adduser 3.100 Add and remove users and groups
ii alsa-utils 1.0.13-1ubuntu1 ALSA utilities
ii aterm [x-termi 1.0.0-2 Afterstep XVT - a VT102 emulator f
ii aterm-ml [x-te 1.0.0-2 Afterstep XVT - a VT102 emulator f
ii debconf 1.5.10 Debian configuration management sy
ii dpkg 1.13.24ubuntu1 package maintenance system for Deb
ii fvwm [x-window 1:2.5.18-2 F(?) Virtual Window Manager, versi
ii gksu 2.0.0-1ubuntu1 graphical frontend to su
ii gnome-session 2.17.3-0ubuntu1 The GNOME 2 Session Manager
ii gnome-terminal 2.16.1-0ubuntu1 The GNOME 2 terminal emulator appl
ii kwin [x-window 4:3.5.5a.dfsg.1-1ubuntu11 the KDE window manager
ii libart-2.0-2 2.3.17-1 Library of functions for 2D graphi
ii libatk1.0-0 1.12.3-1 The ATK accessibility toolkit
ii libattr1 2.4.32-1ubuntu1 Extended attribute shared library
ii libc6 2.5-0ubuntu5 GNU C Library: Shared libraries
ii libcairo2 1.2.4-1ubuntu2 The Cairo 2D vector graphics libra
ii libdbus-1-3 1.0.2-1ubuntu2 simple interprocess messaging syst
ii libdbus-glib-1 0.72-0ubuntu2 simple interprocess messaging syst
ii libdmx1 1:1.0.2-2 X11 Distributed Multihead extensio
ii libfontconfig1 2.4.1-2ubuntu2 generic font configuration library
ii libfreetype6 2.2.1-5 FreeType 2 font engine, shared lib
ii libglade2-0 1:2.6.0-2ubuntu1 library to load .glade files at ru
ii libglib2.0-0 2.12.4-2ubuntu1 The GLib library of C routines
ii libgnomecanvas 2.14.0-3ubuntu1 A powerful object-oriented display
ii libgtk2.0-0 2.10.6-0ubuntu1 The GTK+ graphical user interface
ii libice6 2:1.0.1-1ubuntu1 X11 Inter-Client Exchange library
ii libpam-modules 0.79-3.1ubuntu1 Pluggable Authentication Modules f
ii libpam-runtime 0.79-3.1ubuntu1 Runtime support for the PAM librar
ii libpam0g 0.79-3.1ubuntu1 Pluggable Authentication Modules l
ii libpango1.0-0 1.15.1-0ubuntu1 Layout and rendering of internatio
ii libpng12-0 1.2.15~beta5-0 PNG library - runtime
ii libpopt0 1.10-3 lib for parsing cmdline parameters
ii librsvg2-2 2.16.0-0ubuntu2 SAX-based renderer library for SVG
ii librsvg2-commo 2.16.0-0ubuntu2 SAX-based renderer library for SVG
ii libselinux1 1.32-3 SELinux shared libraries
ii libsm6 2:1.0.1-1ubuntu1 X11 Session Management library
ii libwrap0 7.6.dbs-11 Wietse Venema's TCP wrappers libra
ii libx11-6 2:1.0.3-0ubuntu5 X11 client-side library
ii libxau6 1:1.0.1-2 X11 authorisation library
ii libxcursor1 1.1.7-0ubuntu1 X cursor management library
ii libxdmcp6 1:1.0.1-2 X11 Display Manager Control Protoc
ii libxext6 2:1.0.1-1ubuntu1 X11 miscellaneous extension librar
ii libxfixes3 1:4.0.1-0ubuntu1 X11 miscellaneous 'fixes' extensio
ii libxi6 2:1.0.1-0ubuntu1 X11 Input extension library
ii libxinerama1 2:1.0.1-4build1 X11 Xinerama extension library
ii libxml2 2.6.27.dfsg-1ubuntu1 GNOME XML library
ii libxrandr2 2:1.1.1-0ubuntu1 X11 RandR extension library
ii libxrender1 1:0.9.1-0ubuntu1 X Rendering Extension client libra
ii lsb-base 3.1-22ubuntu1 Linux Standard Base 3.1 init scrip
ii metacity [x-wi 1:2.17.3-0ubuntu1 A lightweight GTK2 based Window Ma
ii rxvt-unicode-m 7.9-2 multi-lingual terminal emulator wi
ii twm [x-window- 1:1.0.1-4build1 Tab window manager
ii ubuntu-sounds 0.5 Ubuntu's GNOME audio theme
ii xrdb 1:1.0.2-0ubuntu2 X resource modification
ii xterm [x-termi 216-0ubuntu1 X terminal emulator
ii zlib1g 1:1.2.3-13ubuntu3 compression library - runtime
Versions of packages gdm recommends:
ii ubuntu-artwork 35 Ubuntu themes and artwork
ii whiptail 0.52.2-8 Displays user-friendly dialog boxe
ii zenity 2.17.1-0ubuntu1 Display graphical dialog boxes fro
-- debconf information:
gdm/daemon_name: /usr/sbin/gdm
* shared/default-x-display-manager: gdm
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