#0  0xb7f02410 in __kernel_vsyscall ()
#1  0xb7bfd989 in ioctl () from /lib/tls/i686/cmov/libc.so.6
#2  0xb79f6e7e in drmWaitVBlank (fd=9, vbl=0xbfaea60c) at xf86drm.c:1857
#3  0xb2d04c9c in do_wait (vbl=0xfffffffc, vbl_seq=0xbfaea60c, fd=-1072667590) at ../common/vblank.c:229
#4  0xb2d04eef in driWaitForVBlank (priv=0x9158a40, vbl_seq=0x9078718, flags=3, missed_deadline=0xbfaea677 "") at ../common/vblank.c:386
#5  0xb2d0a7ca in radeonCopyBuffer (dPriv=0x9158a40, rect=0x0) at radeon_ioctl.c:190
#6  0xb2d09d16 in radeonSwapBuffers (dPriv=0x9158a40) at radeon_context.c:228
#7  0xb2d04ff3 in driSwapBuffers (drawable=0x9158a1c) at ../common/dri_util.c:339
#8  0xb7a59282 in __glXDRIdrawableSwapBuffers (basePrivate=0x91589e0) at ../../../GL/glx/glxdri.c:210
#9  0xb7a20d1b in __glXDisp_SwapBuffers (cl=0x9041348, pc=0xad91f758 "\217\v\003") at ../../../GL/glx/glxcmds.c:1434
#10 0xb7a23ea2 in __glXDispatch (client=0x9041250) at ../../../GL/glx/glxext.c:507
#11 0x08151b6e in XaceCatchExtProc (client=0x9041250) at ../../Xext/xace.c:299
#12 0x0808cbe0 in Dispatch () at ../../dix/dispatch.c:502
#13 0x08073825 in main (argc=10, argv=0xbfaeace4, envp=Cannot access memory at address 0xc0106442
) at ../../dix/main.c:452