Description of problem:
Testing  Multiple Graphical Login

1.    Install RHEL desktop on multiple virtual or bare metal machines.
2.    Edit the /etc/dconf/profile/user file on every client. If one does not already exist, create it.
3.    Add a line containing service-db:keyfile/user to the file and save your changes.
4.    Setup shared /home directory via NFS on each machine. Put the following line into /etc/fstab
    nest.test.redhat.com:/mnt/qa/scratch/rhel7-gnome-shell-shared-home  /home  nfs  rw  0 0
5.    Create account with username "test" and password "redhat".
6.    Login to Gnome.

Version-Release number of selected component:
xorg-x11-server-Xorg-1.14.2-10.el7

Additional info:
reporter:       libreport-2.1.7
backtrace_rating: 4
cmdline:        /usr/bin/Xorg :1 -background none -verbose -auth /run/gdm/auth-for-gdm-bP0CpF/database -seat seat0 -nolisten tcp vt1
crash_function: x86_64_fallback_frame_state
executable:     /usr/bin/Xorg
kernel:         3.10.0-33.el7.x86_64
runlevel:       N 5
type:           CCpp
uid:            0

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 x86_64_fallback_frame_state at ./md-unwind-support.h:58
 #1 uw_frame_state_for at ../../../libgcc/unwind-dw2.c:1253
 #2 _Unwind_Backtrace at ../../../libgcc/unwind.inc:290
 #3 __backtrace at ../sysdeps/x86_64/backtrace.c:109
 #4 xorg_backtrace at backtrace.c:50
 #5 OsSigHandler at osinit.c:129
 #7 ??
 #8 _XSERVTransClose at /usr/include/X11/Xtrans/Xtrans.c:902
 #9 CloseWellKnownConnections at connection.c:515
 #10 AbortServer at log.c:764