Using gdb to attach Xorg gives me the following backtrace:
(gdb) bt
#0 damageDestroyPixmap (pPixmap=0x9744840) at ../../../miext/damage/damage.c:1634
#1 0xb7fb0fb8 in XvDestroyPixmap (pPix=0x9744840) at ../../Xext/xvmain.c:381
#2 0x08085ff5 in dixDestroyPixmap (value=0x9744840, pid=63207183) at ../../dix/dispatch.c:1272
#3 0x0807461c in FreeResource (id=63207183, skipDeleteFuncType=0) at ../../dix/resource.c:561
#4 0x08087963 in ProcFreePixmap (client=0x9be5ad0) at ../../dix/dispatch.c:1358
#5 0x0808c89f in Dispatch () at ../../dix/dispatch.c:454
#6 0x08071d1d in main (argc=10, argv=0xbfddd0e4, envp=0xc14fe8f4) at ../../dix/main.c:441
Using gdb to attach Xorg gives me the following backtrace:
(gdb) bt ./miext/ damage/ damage. c:1634 xvmain. c:381 dispatch. c:1272 ype=0) at ../../dix/ resource. c:561 dispatch. c:1358 dispatch. c:454 main.c: 441
#0 damageDestroyPixmap (pPixmap=0x9744840) at ../../.
#1 0xb7fb0fb8 in XvDestroyPixmap (pPix=0x9744840) at ../../Xext/
#2 0x08085ff5 in dixDestroyPixmap (value=0x9744840, pid=63207183) at ../../dix/
#3 0x0807461c in FreeResource (id=63207183, skipDeleteFuncT
#4 0x08087963 in ProcFreePixmap (client=0x9be5ad0) at ../../dix/
#5 0x0808c89f in Dispatch () at ../../dix/
#6 0x08071d1d in main (argc=10, argv=0xbfddd0e4, envp=0xc14fe8f4) at ../../dix/