GNU gdb 6.8-debian
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnulp"...
(gdb) set args :2
(gdb) run
Starting program: /home/ubuntu/xorg-server-1.5.2/obj-i686-linux-gnulp/hw/kdrive/ephyr/Xephyr :2
[Thread debugging using libthread_db enabled]
[New Thread 0xb7ab2b60 (LWP 4120)]
(EE) AIGLX error: dlopen of /usr/lib/dri/swrast_dri.so failed (/usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
(EE) GLX: could not load software renderer
Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list!
Could not init font path element /usr/share/fonts/X11/100dpi/:unscaled, removing from list!
Could not init font path element /usr/share/fonts/X11/75dpi/:unscaled, removing from list!
Could not init font path element /usr/share/fonts/X11/Type1, removing from list!
Could not init font path element /usr/share/fonts/X11/100dpi, removing from list!
Could not init font path element /usr/share/fonts/X11/75dpi, removing from list!

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7ab2b60 (LWP 4120)]
0xb7bf9106 in memcpy () from /lib/libc.so.6
(gdb) backtrace full
#0  0xb7bf9106 in memcpy () from /lib/libc.so.6
No symbol table info available.
#1  0x093536c0 in ?? ()
No symbol table info available.
#2  0x080d4a46 in fbOddTile (dst=0xb79bd000, dstStride=640, dstX=0, 
    width=20480, height=116, tile=0x93536c0, tileStride=4, tileWidth=128, 
    tileHeight=4, alu=3, pm=4294967295, bpp=32, xRot=0, yRot=0)
    at ../../fb/fbtile.c:152
	tileX = 1
	tileY = <value optimized out>
	widthTmp = -1213603840
	h = 4
	w = 154482368
	x = 0
	y = 360
#3  0x080d4af0 in fbTile (dst=0xb79bd000, dstStride=640, dstX=0, 
    width=20480, height=480, tile=0x93536c0, tileStride=4, tileWidth=128, 
    tileHeight=4, alu=3, pm=4294967295, bpp=32, xRot=0, yRot=0)
    at ../../fb/fbtile.c:200
No locals.
#4  0x080ccb9a in fbFill (pDrawable=0x92df0d0, pGC=0x92deee8, x=0, y=0, 
    width=640, height=480) at ../../fb/fbfill.c:147
	pTile = <value optimized out>
	dst = (FbBits *) 0xb79bd000
	dstStride = 640
	dstBpp = <value optimized out>
	dstXoff = 0
	dstYoff = 0
	pPriv = (FbGCPrivPtr) 0x92def6c
#5  0x080ccf47 in fbPolyFillRect (pDrawable=0x92df0d0, pGC=0x92deee8, 
    nrect=0, prect=0x9359768) at ../../fb/fbfillrect.c:77
	pClip = (RegionPtr) 0x92df100
	pbox = <value optimized out>
	extentX1 = 0
	extentX2 = 640
	extentY1 = 0
	extentY2 = 480
	fullX1 = 0
	fullX2 = 640
	fullY1 = 0
	fullY2 = 480
	partX1 = <value optimized out>
	partX2 = <value optimized out>
	partY1 = <value optimized out>
	partY2 = <value optimized out>
	xorg = 0
	yorg = 0
	n = 0
#6  0x08174875 in damagePolyFillRect (pDrawable=0x92df0d0, pGC=0x92deee8, 
    nRects=1, pRects=0x9359768) at ../../../miext/damage/damage.c:1337
	pGCPriv = (DamageGCPrivPtr) 0x92def54
	oldFuncs = (GCFuncs *) 0x81ecec0
#7  0x080e3af1 in miPaintWindow (pWin=0x92df0d0, prgn=0xbfe99b38, what=0)
    at ../../mi/miexpose.c:646
	pScreen = <value optimized out>
	gcval = {{val = 3, ptr = 0x3}, {val = 1, ptr = 0x1}, {
    val = 154482320, ptr = 0x9353690}, {val = 0, ptr = 0x0}, {val = 0, 
    ptr = 0x0}}
	gcmask = <value optimized out>
	pGC = (GCPtr) 0x92deee8
	i = -1
	pbox = <value optimized out>
	prect = (xRectangle *) 0x9359768
	numRects = 1
	draw_x_off = 0
	draw_y_off = 0
	tile_x_off = <value optimized out>
	tile_y_off = <value optimized out>
	fill = <value optimized out>
	drawable = (DrawablePtr) 0x92df0d0
#8  0x080e3e58 in miWindowExposures (pWin=0x92df0d0, prgn=0xbfe99b38, 
    other_exposed=0x0) at ../../mi/miexpose.c:517
	expRec = {extents = {x1 = -25800, y1 = -16407, x2 = -3840, 
    y2 = 2349}, data = 0x92de768}
	exposures = (RegionPtr) 0xbfe99b38
#9  0x08093c37 in MapWindow (pWin=0x92df0d0, client=0x92cd580)
    at ../../dix/window.c:2838
	temp = {extents = {x1 = 0, y1 = 0, x2 = 640, y2 = 480}, data = 0x0}
	pScreen = (ScreenPtr) 0x92d1cd8
	pParent = (WindowPtr) 0x0
	dosave = <value optimized out>
	pLayerWin = <value optimized out>
#10 0x08093e45 in InitRootWindow (pWin=0x92df0d0) at ../../dix/window.c:492
	pScreen = (ScreenPtr) 0x92d1cd8
#11 0x0808e81d in main (argc=2, argv=0xbfe99c94, envp=Cannot access memory at address 0xc
)
    at ../../dix/main.c:422
	i = 1
	error = 134800406
	xauthfile = <value optimized out>
	alwaysCheckForInput = {0, 1}
(gdb) info registers
eax            0x0	0
ecx            0x4	4
edx            0x1	1
ebx            0x81e7ff4	136216564
esp            0xbfe99738	0xbfe99738
ebp            0xbfe99828	0xbfe99828
esi            0x93536c0	154482368
edi            0xb7a9e000	-1213603840
eip            0xb7bf9106	0xb7bf9106 <memcpy+70>
eflags         0x10246	[ PF ZF IF RF ]
cs             0x73	115
ss             0x7b	123
ds             0x7b	123
es             0x7b	123
fs             0x0	0
gs             0x33	51
(gdb) thread apply all backtrace

Thread 1 (Thread 0xb7ab2b60 (LWP 4120)):
#0  0xb7bf9106 in memcpy () from /lib/libc.so.6
#1  0x093536c0 in ?? ()
#2  0x080d4a46 in fbOddTile (dst=0xb79bd000, dstStride=640, dstX=0, 
    width=20480, height=116, tile=0x93536c0, tileStride=4, tileWidth=128, 
    tileHeight=4, alu=3, pm=4294967295, bpp=32, xRot=0, yRot=0)
    at ../../fb/fbtile.c:152
#3  0x080d4af0 in fbTile (dst=0xb79bd000, dstStride=640, dstX=0, 
    width=20480, height=480, tile=0x93536c0, tileStride=4, tileWidth=128, 
    tileHeight=4, alu=3, pm=4294967295, bpp=32, xRot=0, yRot=0)
    at ../../fb/fbtile.c:200
#4  0x080ccb9a in fbFill (pDrawable=0x92df0d0, pGC=0x92deee8, x=0, y=0, 
    width=640, height=480) at ../../fb/fbfill.c:147
#5  0x080ccf47 in fbPolyFillRect (pDrawable=0x92df0d0, pGC=0x92deee8, 
    nrect=0, prect=0x9359768) at ../../fb/fbfillrect.c:77
#6  0x08174875 in damagePolyFillRect (pDrawable=0x92df0d0, pGC=0x92deee8, 
    nRects=1, pRects=0x9359768) at ../../../miext/damage/damage.c:1337
#7  0x080e3af1 in miPaintWindow (pWin=0x92df0d0, prgn=0xbfe99b38, what=0)
    at ../../mi/miexpose.c:646
#8  0x080e3e58 in miWindowExposures (pWin=0x92df0d0, prgn=0xbfe99b38, 
    other_exposed=0x0) at ../../mi/miexpose.c:517
#9  0x08093c37 in MapWindow (pWin=0x92df0d0, client=0x92cd580)
    at ../../dix/window.c:2838
#10 0x08093e45 in InitRootWindow (pWin=0x92df0d0) at ../../dix/window.c:492
#11 0x0808e81d in main (argc=2, argv=0xbfe99c94, envp=Cannot access memory at address 0xc
)
    at ../../dix/main.c:422
(gdb) quit
The program is running.  Exit anyway? (y or n)