Public bug reported:

Binary package hint: gdm

After today's update, gdm crashes at startup. Didn't happen with lucid
upated 2 days back. With libglib2.0-0-dbg package installed, gdm spits
out following backtrace (started manually, but the same happens if
spawned from upstart or run from inside gdb); note that at #9
g_idle_dispatch receives dispatch=0, which is pointer to function that
is called, obviously resulting in crash. Fell free to ask for more
information.

gdm[2531]: ******************* START **********************************
gdm[2531]: [Thread debugging using libthread_db enabled]
gdm[2531]: 0x0053c422 in __kernel_vsyscall ()
gdm[2531]: #0  0x0053c422 in __kernel_vsyscall ()
gdm[2531]: #1  0x0025ad23 in __waitpid_nocancel () from 
/lib/tls/i686/cmov/libpthread.so.0
gdm[2531]: #2  0x08066b19 in ?? ()
gdm[2531]: #3  0x08066c11 in ?? ()
gdm[2531]: #4  <signal handler called>
gdm[2531]: #5  0x0045c043 in strchr () from /lib/tls/i686/cmov/libc.so.6
gdm[2531]: #6  0x08059472 in ?? ()
gdm[2531]: #7  0x0805bda2 in ?? ()
gdm[2531]: #8  0x0805c253 in ?? ()
gdm[2531]: #9  0x00369251 in g_idle_dispatch (source=0x90c4880, callback=0, 
user_data=0x90b7430)
gdm[2531]:     at /build/buildd/glib2.0-2.23.1/glib/gmain.c:4065
gdm[2531]: #10 0x0036afd8 in g_main_dispatch (context=0x90b0b98) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:1960
gdm[2531]: #11 IA__g_main_context_dispatch (context=0x90b0b98) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:2513
gdm[2531]: #12 0x0036e880 in g_main_context_iterate (context=0x90b0b98, 
block=<value optimized out>, dispatch=1, self=0x90acad0)
gdm[2531]:     at /build/buildd/glib2.0-2.23.1/glib/gmain.c:2591
gdm[2531]: #13 0x0036ecef in IA__g_main_loop_run (loop=0x90c7170) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:2799
gdm[2531]: #14 0x0804eb08 in ?? ()
gdm[2531]: #15 0x003ffbd6 in __libc_start_main () from 
/lib/tls/i686/cmov/libc.so.6
gdm[2531]: #16 0x0804dd81 in ?? ()
gdm[2531]: 
gdm[2531]: Thread 1 (Thread 0xb77b4720 (LWP 2524)):
gdm[2531]: #0  0x0053c422 in __kernel_vsyscall ()
gdm[2531]: No symbol table info available.
gdm[2531]: #1  0x0025ad23 in __waitpid_nocancel () from 
/lib/tls/i686/cmov/libpthread.so.0
gdm[2531]: No symbol table info available.
gdm[2531]: #2  0x08066b19 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #3  0x08066c11 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #4  <signal handler called>
gdm[2531]: No symbol table info available.
gdm[2531]: #5  0x0045c043 in strchr () from /lib/tls/i686/cmov/libc.so.6
gdm[2531]: No symbol table info available.
gdm[2531]: #6  0x08059472 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #7  0x0805bda2 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #8  0x0805c253 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #9  0x00369251 in g_idle_dispatch (source=0x90c4880, callback=0, 
user_data=0x90b7430)
gdm[2531]:     at /build/buildd/glib2.0-2.23.1/glib/gmain.c:4065
gdm[2531]: No locals.
gdm[2531]: #10 0x0036afd8 in g_main_dispatch (context=0x90b0b98) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:1960
gdm[2531]:         dispatch = 0x369230 <g_idle_dispatch>
gdm[2531]:         user_data = 0x90b7430
gdm[2531]:         callback = 0x805c240
gdm[2531]:         cb_funcs = 0x3e831c
gdm[2531]:         cb_data = 0x90c43e8
gdm[2531]: next = 0x0}
gdm[2531]:         source = 0x52ebd4
gdm[2531]:         current = 0x90c9208
gdm[2531]: 
gdm[2531]: #11 IA__g_main_context_dispatch (context=0x90b0b98) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:2513
gdm[2531]: No locals.
gdm[2531]: #12 0x0036e880 in g_main_context_iterate (context=0x90b0b98, 
block=<value optimized out>, dispatch=1, self=0x90acad0)
gdm[2531]:     at /build/buildd/glib2.0-2.23.1/glib/gmain.c:2591
gdm[2531]: 
gdm[2531]: 
gdm[2531]: 
gdm[2531]:         nfds = <value optimized out>
gdm[2531]:         allocated_nfds = <value optimized out>
gdm[2531]:         fds = <value optimized out>
gdm[2531]: 
gdm[2531]: #13 0x0036ecef in IA__g_main_loop_run (loop=0x90c7170) at 
/build/buildd/glib2.0-2.23.1/glib/gmain.c:2799
gdm[2531]:         self = 0x90acad0
gdm[2531]: 
gdm[2531]: #14 0x0804eb08 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: #15 0x003ffbd6 in __libc_start_main () from 
/lib/tls/i686/cmov/libc.so.6
gdm[2531]: No symbol table info available.
gdm[2531]: #16 0x0804dd81 in ?? ()
gdm[2531]: No symbol table info available.
gdm[2531]: A debugging session is active.
gdm[2531]: 
gdm[2531]:      Inferior 1 [process 2524] will be detached.
gdm[2531]: 
gdm[2531]: Quit anyway? (y or n) [answered Y; input not from terminal]
gdm[2531]: ******************* END **********************************

ProblemType: Bug
Architecture: i386
Date: Thu Jan  7 13:50:01 2010
DistroRelease: Ubuntu 10.04
Package: gdm 2.29.1-0ubuntu9
ProcEnviron:
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/zsh
ProcVersionSignature: Ubuntu 2.6.32-9.13-generic
SourcePackage: gdm
Tags: lucid
Uname: Linux 2.6.32-9-generic i686

** Affects: gdm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
[lucid] gdm crashes at start
https://bugs.launchpad.net/bugs/504226
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