#0  0xb7f28430 in __kernel_vsyscall ()
#1  0xb7bbad59 in ioctl () from /lib/tls/i686/cmov/libc.so.6
#2  0xb778b25f in drm_intel_gem_bo_start_gtt_access (bo=0xb71c9c0, 
    write_enable=0) at ../../../libdrm/intel/intel_bufmgr_gem.c:860
#3  0xb778b315 in drm_intel_gem_bo_wait_rendering (bo=0xb71c9c0)
    at ../../../libdrm/intel/intel_bufmgr_gem.c:838
#4  0xb77883d2 in drm_intel_bo_wait_rendering (bo=0xb71c9c0)
    at ../../../libdrm/intel/intel_bufmgr.c:129
#5  0xa71c6701 in intelFinish (ctx=0xb5332b0) at intel_context.c:581
#6  0xa7223661 in _mesa_Finish () at main/context.c:1791
#7  0xb789338d in __glXDisp_SwapBuffers (cl=0xb1188c0, 
    pc=0xe71ac68 "\232\v\003") at ../../glx/glxcmds.c:1425
#8  0xb7896d6a in __glXDispatch (client=0xb1842d8) at ../../glx/glxext.c:523
#9  0x0808d57f in Dispatch () at ../../dix/dispatch.c:437
#10 0x080722ed in main (argc=10, argv=0xbfc44aa4, envp=Cannot access memory at address 0x400c6467
)
    at ../../dix/main.c:397