System Environment:
--------------------------
Arch:                 i386
Platform:             sugarbay
wayland: (master) 7746a80e2ab829f16fa328562ec6e5664beb624f
libdrm: (master) c50cc24690938db53cd91ae9ff2fa0958693f80d
macros: (master) c0c42057e0d357c144e7933ee413b522950a0f17
glproto: (master) 29d5b553b30755a25300c30b67d39b37c9a76466
dri2proto: (master) 7fd18b15646a62bd82a4eb0eca60a34c1731813d
xproto: (master) 20202784b9700d973d5301f0cb3243eba99fc349
libX11: (master) abc523fce31fcf2687229697a8eb656e343ecb0c
mesa: (master) e07b1603e24ddd21a61b11390712c4b39d6a3c5c
kbproto: (master) b0f7912512091ea58dfaf8dffb2a658a6afeb96d
libxkbcommon: (master) aaffcef35d692b0c77fe88d63ac6d9c669aad080
pixman: (master) 8a8aabf05c8e6c7b68b68c80e4e73877fd35ce78
cairo: (master) 9bb5b02694e1bbd5c0cdd28606d80fb2d2d701ee
weston: (master) ec323d222cbf8fff30871d79455c88c7096b111e
Kernel:    (drm-intel-next-queued) fa37d39e4c6622d80bd8061d600701bcea1d6870

Bug detailed description:
-----------------------------
Start weston.Run case smoke, It sagfault. It happens under drm mode and X mode.
Backtrace:
#0  0xb7fff424 in __kernel_vsyscall ()
#1  0x45b560ef in raise () from /lib/libc.so.6
#2  0x45b57a25 in abort () from /lib/libc.so.6
#3  0xb7e18a2a in wl_proxy_marshal (proxy=0x8320320, opcode=0)
    at wayland-client.c:208
#4  0x0804bd15 in redraw_handler (widget=0x8322550, data=0xbffff250)
    at smoke.c:223
#5  0x0804c30d in widget_redraw (widget=0x8322550) at window.c:2122
#6  0x080503c0 in idle_redraw (task=0x831c72c, events=0) at window.c:2134
#7  0x0804c690 in display_run (display=0x8055458) at window.c:3134
#8  0x0804b756 in main (argc=1, argv=0xbffff344) at smoke.c:321

Reproduce steps:
----------------------------
1. start weston
2. ./smoke