Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x2ab26f2884b0 (LWP 7146)]
do_row (format=<value optimized out>, srcWidth=<value optimized out>, srcRowA=0x0, srcRowB=0x1000, dstWidth=512, dstRow=0x283d200) at main/mipmap.c:162
162	            dst[i][0] = (rowA[j][0] + rowA[k][0] +
(gdb) bt
#0  do_row (format=<value optimized out>, srcWidth=<value optimized out>, srcRowA=0x0, srcRowB=0x1000, dstWidth=512, dstRow=0x283d200) at main/mipmap.c:162
#1  0x00002ab280fcfab9 in make_2d_mipmap (format=0x4, border=0, srcWidth=1024, srcHeight=1024, srcPtr=0x0, dstWidth=512, dstHeight=512, dstPtr=0x283d200 "")
    at main/mipmap.c:561
#2  0x00002ab280fd09cf in _mesa_generate_mipmap (ctx=0x18ed340, target=3553, texUnit=<value optimized out>, texObj=0x1744f00) at main/mipmap.c:1134
#3  0x00002ab280fb3e77 in _mesa_GenerateMipmapEXT (target=3553) at main/fbobject.c:1547
#4  0x00002ab26f6c3a40 in __glXDisp_Render (cl=<value optimized out>, pc=0x1750274 "\b") at ../../../GL/glx/glxcmds.c:1778
#5  0x00002ab26f6c76a0 in __glXDispatch (client=0x1369820) at ../../../GL/glx/glxext.c:492
#6  0x00000000005093b7 in XaceCatchExtProc (client=0x1369820) at ../../Xext/xace.c:310
#7  0x000000000044adfe in Dispatch () at ../../dix/dispatch.c:465
#8  0x000000000043289a in main (argc=10, argv=0x7fff3e177e28, envp=<value optimized out>) at ../../dix/main.c:444
(gdb) bt full
#0  do_row (format=<value optimized out>, srcWidth=<value optimized out>, srcRowA=0x0, srcRowB=0x1000, dstWidth=512, dstRow=0x283d200) at main/mipmap.c:162
	i = 1
	j = 2
	k = 3
	k0 = <value optimized out>
	colStride = 2
#1  0x00002ab280fcfab9 in make_2d_mipmap (format=0x4, border=0, srcWidth=1024, srcHeight=1024, srcPtr=0x0, dstWidth=512, dstHeight=512, dstPtr=0x283d200 "")
    at main/mipmap.c:561
	bpt = 4
	srcWidthNB = 1024
	dstWidthNB = 512
	dstHeightNB = 512
	srcRowStride = 4096
	dstRowStride = 2048
	srcA = (const GLubyte *) 0x2000 <Address 0x2000 out of bounds>
	srcB = (const GLubyte *) 0x3000 <Address 0x3000 out of bounds>
	dst = (GLubyte *) 0x283da00 ""
	row = 1
#2  0x00002ab280fd09cf in _mesa_generate_mipmap (ctx=0x18ed340, target=3553, texUnit=<value optimized out>, texObj=0x1744f00) at main/mipmap.c:1134
	dstImage = (struct gl_texture_image *) 0x17b7fc0
	srcWidth = 1024
	srcHeight = 1024
	dstDepth = 1
	border = 0
	srcImage = (const struct gl_texture_image *) 0x0
	srcDepth = 1
	dstWidth = 512
	dstHeight = 512
	srcImage = (const struct gl_texture_image *) 0x2ab28137b0a0
	convertFormat = (const struct gl_texture_format *) 0x2ab28137b0a0
	srcData = (const GLubyte *) 0x0
	dstData = (GLubyte *) 0x283d200 ""
	level = 1
	maxLevels = <value optimized out>
	__PRETTY_FUNCTION__ = "_mesa_generate_mipmap"
#3  0x00002ab280fb3e77 in _mesa_GenerateMipmapEXT (target=3553) at main/fbobject.c:1547
	texUnit = (struct gl_texture_unit *) 0x18f87d8
	texObj = (struct gl_texture_object *) 0x1744f00
	ctx = (GLcontext *) 0x4
#4  0x00002ab26f6c3a40 in __glXDisp_Render (cl=<value optimized out>, pc=0x1750274 "\b") at ../../../GL/glx/glxcmds.c:1778
	entry = {bytes = 8, varsize = 0}
	extra = 512
	proc = (__GLXdispatchRenderProcPtr) 0x2ab26f6cbfb0 <__glXDisp_GenerateMipmapEXT>
	err = 0
	client = (ClientPtr) 0x1369820
	left = 136
	cmdlen = 8
	error = 0
	commandsDone = 6
	glxc = (__GLXcontext *) 0xa07600
---Type <return> to continue, or q <return> to quit---
	sw = <value optimized out>
#5  0x00002ab26f6c76a0 in __glXDispatch (client=0x1369820) at ../../../GL/glx/glxext.c:492
	stuff = (xGLXSingleReq *) 0x175022c
	opcode = <value optimized out>
	proc = (__GLXdispatchSingleProcPtr) 0x2ab26f6c3970 <__glXDisp_Render>
	cl = (__GLXclientState *) 0x1369978
	retval = 1
#6  0x00000000005093b7 in XaceCatchExtProc (client=0x1369820) at ../../Xext/xace.c:310
	major = 156
	ext = <value optimized out>
	rec = {client = 0x1369820, ext = 0x844240, access_mode = 16777216, status = 0}
#7  0x000000000044adfe in Dispatch () at ../../dix/dispatch.c:465
	clientReady = <value optimized out>
	result = <value optimized out>
	client = (ClientPtr) 0x1369820
	nready = 0
	start_tick = 640
#8  0x000000000043289a in main (argc=10, argv=0x7fff3e177e28, envp=<value optimized out>) at ../../dix/main.c:444
	pScreen = <value optimized out>
	i = 1
	error = 0
	xauthfile = <value optimized out>
	alwaysCheckForInput = {0, 1}
(gdb)