(gdb) bt full
#0  damageDestroyPixmap (pPixmap=0xabca808)
    at ../../../miext/damage/damage.c:1582
        pPrev = (DamagePtr *) 0x81f3de8
        pDamage = (DamagePtr) 0x81f3de8
        pScreen = (ScreenPtr) 0x9d32ca0
        pScrPriv = (DamageScrPrivPtr) 0x9d6d230
#1  0xb7ba3560 in XvDestroyPixmap (pPix=0xabca808) at ../../Xext/xvmain.c:381
        status = 136265192
        pScreen = (ScreenPtr) 0x9d32ca0
        pa = (XvAdaptorPtr) 0x9d750b4
        na = 2
        pp = (XvPortPtr) 0x9d75ed0
        np = 16
#2  0x08085425 in dixDestroyPixmap (value=0xabca808, pid=53405736)
    at ../../dix/dispatch.c:1246
No locals.
#3  0x08072794 in FreeResource (id=53405736, skipDeleteFuncType=0)
    at ../../dix/resource.c:561
        rtype = 2
        cid = <value optimized out>
        res = (ResourcePtr) 0xadc5d30
        prev = (ResourcePtr *) 0xa9ecbd0
        head = (ResourcePtr *) 0xaa95538
#4  0x08086dc9 in ProcFreePixmap (client=0xabc5de8)
    at ../../dix/dispatch.c:1332
        pMap = (PixmapPtr) 0xabca808
        rc = <value optimized out>
#5  0x0808be6f in Dispatch () at ../../dix/dispatch.c:437
        result = <value optimized out>
        client = (ClientPtr) 0xabc5de8
        nready = 0
        start_tick = 1482900
#6  0x0806fd05 in main (argc=10, argv=0xbf980f94, envp=0xe718e8f4)
    at ../../dix/main.c:398
        i = 1
        xauthfile = <value optimized out>
        alwaysCheckForInput = {0, 1}

1620    in ../../../miext/damage/damage.c
(gdb) step
1582    in ../../../miext/damage/damage.c
(gdb) step
1623    in ../../../miext/damage/damage.c