StacktraceTop: __sna_dri2_copy_region (sna=0xb6c09000, draw=<optimized out>, region=<optimized out>, region@entry=0x0, src=0x80d4b1c8, dst=0x80d33610, flags=4) at ../../../src/sna/sna_dri2.c:1331 __sna_dri2_copy_event (flags=4, info=0x80ee47f0) at ../../../src/sna/sna_dri2.c:173 sna_dri2_immediate_blit (sync=false, info=0x80ee47f0, sna=0xb6c09000) at ../../../src/sna/sna_dri2.c:2652 sna_dri2_schedule_swap (client=0x80f2d240, draw=0x80f8dd90, front=0x80d33610, back=0x80d4b1c8, target_msc=0xbfa63318, divisor=0, remainder=0, func=0x80243730 <DRI2SwapEvent>, data=0x80f8dd90) at ../../../src/sna/sna_dri2.c:3288 DRI2SwapBuffers (client=0x80f2d240, pDraw=0x80f8dd90, target_msc=0, divisor=0, remainder=0, swap_target=0xbfa633c0, func=0x80243730 <DRI2SwapEvent>, data=0x80f8dd90) at ../../../../hw/xfree86/dri2/dri2.c:1163
StacktraceTop: dri2_copy_ region (sna=0xb6c09000, draw=<optimized out>, region=<optimized out>, region@entry=0x0, src=0x80d4b1c8, dst=0x80d33610, flags=4) at ../../. ./src/sna/ sna_dri2. c:1331 dri2_copy_ event (flags=4, info=0x80ee47f0) at ../../. ./src/sna/ sna_dri2. c:173 immediate_ blit (sync=false, info=0x80ee47f0, sna=0xb6c09000) at ../../. ./src/sna/ sna_dri2. c:2652 schedule_ swap (client=0x80f2d240, draw=0x80f8dd90, front=0x80d33610, back=0x80d4b1c8, target_ msc=0xbfa63318, divisor=0, remainder=0, func=0x80243730 <DRI2SwapEvent>, data=0x80f8dd90) at ../../. ./src/sna/ sna_dri2. c:3288 0xbfa633c0, func=0x80243730 <DRI2SwapEvent>, data=0x80f8dd90) at ../../. ./../hw/ xfree86/ dri2/dri2. c:1163
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DRI2SwapBuffers (client=0x80f2d240, pDraw=0x80f8dd90, target_msc=0, divisor=0, remainder=0, swap_target=