Program received signal SIGABRT, Aborted.
0xffffe430 in __kernel_vsyscall ()
(gdb) bt f
#0  0xffffe430 in __kernel_vsyscall ()
No symbol table info available.
#1  0xb7a72990 in raise () from /lib/libc.so.6
No symbol table info available.
#2  0xb7a742c8 in abort () from /lib/libc.so.6
No symbol table info available.
#3  0xb7aae6c5 in ?? () from /lib/libc.so.6
No symbol table info available.
#4  0xb7ab4654 in ?? () from /lib/libc.so.6
No symbol table info available.
#5  0xb7ab5f3c in free () from /lib/libc.so.6
No symbol table info available.
#6  0x081396b1 in Xfree (ptr=0x0) at utils.c:1165
No locals.
#7  0x080726db in dixFreePrivates (privates=0xa851740) at privates.c:220
	i = 56
	calldata = {key = 0x82199c4, value = 0xa8518ec}
#8  0xb76f3612 in fbDestroyPixmap (pPixmap=0xa226108) at fbpixmap.c:103
No locals.
#9  0xb76ce070 in exaDestroyPixmap (pPixmap=0xa226108) at exa.c:215
	pScreen = (ScreenPtr) 0x82409b8
#10 0x0817fd92 in damageDestroyPixmap (pPixmap=0xa226108) at damage.c:1747
	pScreen = (ScreenPtr) 0x82409b8
	pScrPriv = (DamageScrPrivPtr) 0x824a748
#11 0xb79e9248 in XvDestroyPixmap (pPix=0xa226108) at xvmain.c:382
	status = 0
	pScreen = (ScreenPtr) 0x82409b8
	pa = (XvAdaptorPtr) 0x82548d8
	na = 1
	pp = (XvPortPtr) 0x8254e50
	np = 16
#12 0x080867e5 in dixDestroyPixmap (value=0xa226108, pid=111287789) at dispatch.c:1246
---Type <return> to continue, or q <return> to quit---
No locals.
#13 0x0807470c in FreeResource (id=111287789, skipDeleteFuncType=0) at resource.c:561
	rtype = 2
	cid = <value optimized out>
	res = (ResourcePtr) 0xab47b18
	prev = (ResourcePtr *) 0xa2bc5e0
	head = (ResourcePtr *) 0x99ddf9c
#14 0x08088113 in ProcFreePixmap (client=0xb7f4148) at dispatch.c:1332
	pMap = (PixmapPtr) 0xa226108
	rc = 6
#15 0x0808d02f in Dispatch () at dispatch.c:437
	result = <value optimized out>
	client = (ClientPtr) 0xb7f4148
	nready = 0
	start_tick = 77920
#16 0x08071dbd in main (argc=8, argv=0xbff6ab74, envp=Cannot access memory at address 0x1055
) at main.c:397
	i = <value optimized out>
	alwaysCheckForInput = {0, 1}