wayland output Xorg crash

[11:29:36.646] forked X server, pid 3193

X.Org X Server 1.12.2
Release Date: 2012-05-29
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.7.1-030701-generic x86_64
Current Operating System: Linux abc-HP 3.7.1-030701-generic #201212171620 SMP Mon Dec 17 21:21:30 UTC 2012 x86_64
Kernel command line: BOOT_IMAGE=/vmlinuz-3.7.1-030701-generic root=UUID=03830f3b-e668-446e-a27e-6466c82ddaeb ro quiet splash vt.handoff=7
Build Date: 21 January 2013  05:25:12PM

Current version of pixman: 0.29.1
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/home/abc/WAYLANDINSTALLDIR/var/log/Xorg.1.log", Time: Tue Jan 22 11:29:36 2013
(==) Using system config directory "/usr/share/X11/xorg.conf.d"

Backtrace:
0: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (xorg_backtrace+0x34) [0x564674]
1: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (0x400000+0x168679) [0x568679]
2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f8f10922000+0xfcb0) [0x7f8f10931cb0]
3: /home/abc/WAYLANDINSTALLDIR/lib/libwayland-client.so.0 (wl_proxy_create+0x1b) [0x7f8f0d7eadab]
4: /home/abc/WAYLANDINSTALLDIR/lib/xorg/modules/extensions/libxwayland.so (0x7f8f0d9f2000+0x610a) [0x7f8f0d9f810a]
5: /usr/lib/x86_64-linux-gnu/libffi.so.6 (ffi_call_unix64+0x4c) [0x7f8f0d5e3a14]
6: /usr/lib/x86_64-linux-gnu/libffi.so.6 (ffi_call+0x1e5) [0x7f8f0d5e3435]
7: /home/abc/WAYLANDINSTALLDIR/lib/libwayland-client.so.0 (0x7f8f0d7e6000+0x6fdf) [0x7f8f0d7ecfdf]
8: /home/abc/WAYLANDINSTALLDIR/lib/libwayland-client.so.0 (0x7f8f0d7e6000+0x488c) [0x7f8f0d7ea88c]
9: /home/abc/WAYLANDINSTALLDIR/lib/libwayland-client.so.0 (wl_display_roundtrip+0x6c) [0x7f8f0d7eb57c]
10: /home/abc/WAYLANDINSTALLDIR/lib/xorg/modules/extensions/libxwayland.so (xwl_drm_pre_init+0x57) [0x7f8f0d9f81b7]
11: /home/abc/WAYLANDINSTALLDIR/lib/xorg/modules/drivers/nouveau_drv.so (0x7f8f0d3ae000+0xe234) [0x7f8f0d3bc234]
12: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (0x400000+0x86116) [0x486116]
13: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (xf86CallDriverProbe+0x84) [0x467194]
14: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (xf86BusConfig+0x81) [0x467a31]
15: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (InitOutput+0x743) [0x471563]
16: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (0x400000+0x2262d) [0x42262d]
17: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f8f0f7ab76d]
18: /home/abc/WAYLANDINSTALLDIR/bin/Xorg (0x400000+0x22aed) [0x422aed]

Segmentation fault at address 0x18

Fatal server error:
Caught signal 11 (Segmentation fault). Server aborting


Please consult the The X.Org Foundation support
	 at http://wiki.x.org
 for help.
Please also check the log file at "/home/abc/WAYLANDINSTALLDIR/var/log/Xorg.1.log" for additional information.

Server terminated with error (1). Closing log file.
[11:29:36.754] libwayland: disconnect from client 0x1e6acb0
[11:29:36.754] xserver crashing too fast: 134
^C[11:29:43.523] caught signal 2
[11:29:43.523] libwayland: disconnect from client 0x1bd2580
[11:29:43.523] libwayland: disconnect from client 0x1e517e0