Breakpoint 1, 0xb7bb3106 in abort () from /lib/tls/i686/cmov/libc.so.6
(gdb) bt
#0  0xb7bb3106 in abort () from /lib/tls/i686/cmov/libc.so.6
#1  0xa75ec874 in dri_ttm_fence_wait (fence=0x84287f0)
    at intel_bufmgr_ttm.c:650
#2  0xa75abe82 in dri_fence_wait (fence=0x84287f0) at ../common/dri_bufmgr.c:96
#3  0xa75cc1d7 in intelFinish (ctx=0x844a4c8) at intel_context.c:293
#4  0xa75ef3e8 in _mesa_Finish () at main/context.c:1728
#5  0xb7a7dccb in __glXDisp_SwapBuffers ()
   from /usr/lib/xorg/modules/extensions//libglx.so
#6  0xb7a81016 in __glXDispatch ()
   from /usr/lib/xorg/modules/extensions//libglx.so
#7  0x0808a86f in Dispatch () at ../../dix/dispatch.c:468
#8  0x08071195 in main (argc=5, argv=0xbfd49214, envp=Cannot access memory at address 0x8
) at ../../dix/main.c:448