dinard:~# gdb /opt/gfx-test/bin/Xorg 8003 GNU gdb (GDB) 6.8.50.20090628-cvs-debian Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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 "i486-linux-gnu". For bug reporting instructions, please see: ... Attaching to program: /opt/gfx-test/bin/Xorg, process 8003 Reading symbols from /opt/gfx-test/lib/libpciaccess.so.0...done. Loaded symbols for /opt/gfx-test/lib/libpciaccess.so.0 Reading symbols from /lib/libdl.so.2...Reading symbols from /usr/lib/debug/lib/libdl-2.9.so...done. done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /opt/gfx-test/lib/libXfont.so.1...done. Loaded symbols for /opt/gfx-test/lib/libXfont.so.1 Reading symbols from /opt/gfx-test/lib/libXau.so.6...done. Loaded symbols for /opt/gfx-test/lib/libXau.so.6 Reading symbols from /opt/gfx-test/lib/libfontenc.so.1...done. Loaded symbols for /opt/gfx-test/lib/libfontenc.so.1 Reading symbols from /opt/gfx-test/lib/libpixman-1.so.0...done. Loaded symbols for /opt/gfx-test/lib/libpixman-1.so.0 Reading symbols from /usr/lib/libhal.so.1...done. Loaded symbols for /usr/lib/libhal.so.1 Reading symbols from /usr/lib/libdbus-1.so.3...done. Loaded symbols for /usr/lib/libdbus-1.so.3 Reading symbols from /opt/gfx-test/lib/libXdmcp.so.6...done. Loaded symbols for /opt/gfx-test/lib/libXdmcp.so.6 Reading symbols from /usr/lib/i686/cmov/libssl.so.0.9.8...done. Loaded symbols for /usr/lib/i686/cmov/libssl.so.0.9.8 Reading symbols from /usr/lib/i686/cmov/libcrypto.so.0.9.8...done. Loaded symbols for /usr/lib/i686/cmov/libcrypto.so.0.9.8 Reading symbols from /lib/libm.so.6...Reading symbols from /usr/lib/debug/lib/libm-2.9.so...done. done. Loaded symbols for /lib/libm.so.6 Reading symbols from /lib/librt.so.1...Reading symbols from /usr/lib/debug/lib/librt-2.9.so...done. done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libc.so.6...Reading symbols from /usr/lib/debug/lib/libc-2.9.so...done. done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/ld-linux.so.2...Reading symbols from /usr/lib/debug/lib/ld-2.9.so...done. done. Loaded symbols for /lib/ld-linux.so.2 Reading symbols from /usr/lib/libfreetype.so.6...done. Loaded symbols for /usr/lib/libfreetype.so.6 Reading symbols from /usr/lib/libz.so.1...done. Loaded symbols for /usr/lib/libz.so.1 Reading symbols from /usr/lib/libsmbios.so.2...done. Loaded symbols for /usr/lib/libsmbios.so.2 Reading symbols from /lib/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/libpthread-2.9.so...done. [Thread debugging using libthread_db enabled] done. Loaded symbols for /lib/libpthread.so.0 Reading symbols from /usr/lib/libstdc++.so.6...done. Loaded symbols for /usr/lib/libstdc++.so.6 Reading symbols from /lib/libgcc_s.so.1...done. Loaded symbols for /lib/libgcc_s.so.1 Reading symbols from /opt/gfx-test/lib/xorg/modules/extensions/libextmod.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/extensions/libextmod.so Reading symbols from /opt/gfx-test/lib/xorg/modules/extensions/libdbe.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/extensions/libdbe.so Reading symbols from /opt/gfx-test/lib/xorg/modules/extensions/libglx.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/extensions/libglx.so Reading symbols from /opt/gfx-test/lib/xorg/modules/extensions/libdri.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/extensions/libdri.so Reading symbols from /opt/gfx-test/lib/libdrm.so.2...done. Loaded symbols for /opt/gfx-test/lib/libdrm.so.2 Reading symbols from /opt/gfx-test/lib/xorg/modules/extensions/libdri2.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/extensions/libdri2.so Reading symbols from /opt/gfx-test/lib/xorg/modules/drivers/intel_drv.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/drivers/intel_drv.so Reading symbols from /opt/gfx-test/lib/libdrm_intel.so.1...done. Loaded symbols for /opt/gfx-test/lib/libdrm_intel.so.1 Reading symbols from /opt/gfx-test/lib/xorg/modules/libfb.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/libfb.so Reading symbols from /opt/gfx-test/lib/dri/i965_dri.so...done. Loaded symbols for /opt/gfx-test/lib/dri/i965_dri.so Reading symbols from /usr/lib/libexpat.so.1...done. Loaded symbols for /usr/lib/libexpat.so.1 Reading symbols from /opt/gfx-test/lib/xorg/modules/input/evdev_drv.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/input/evdev_drv.so Reading symbols from /opt/gfx-test/lib/xorg/modules/input/synaptics_drv.so...done. Loaded symbols for /opt/gfx-test/lib/xorg/modules/input/synaptics_drv.so 0xb7c04a18 in ___newselect_nocancel () from /lib/libc.so.6 (gdb) cont Continuing. Program received signal SIGUSR1, User defined signal 1. 0xb7c03ff4 in ioctl () from /lib/libc.so.6 (gdb) cont Continuing. Program received signal SIGSEGV, Segmentation fault. core_combine_over_u_sse2 (imp=0xab01b08, op=PIXMAN_OP_OVER, src_image=0xbe01378, mask_image=0x0, dst_image=0xac88e78, src_x=0, src_y=, mask_x=0, mask_y=0, dest_x=0, dest_y=, width=22, height=21) at pixman-sse2.c:643 643 d = *pd; (gdb) bt f #0 core_combine_over_u_sse2 (imp=0xab01b08, op=PIXMAN_OP_OVER, src_image=0xbe01378, mask_image=0x0, dst_image=0xac88e78, src_x=0, src_y=, mask_x=0, mask_y=0, dest_x=0, dest_y=, width=22, height=21) at pixman-sse2.c:643 s = 4289838500 #1 sse2_composite_over_8888_8888 (imp=0xab01b08, op=PIXMAN_OP_OVER, src_image=0xbe01378, mask_image=0x0, dst_image=0xac88e78, src_x=0, src_y=, mask_x=0, mask_y=0, dest_x=0, dest_y=, width=22, height=21) at pixman-sse2.c:3508 dst = 0xb27d9014 src = 0xb4d3b000 #2 0xb7edf7ca in walk_region_internal (imp=0xab01b08, op=PIXMAN_OP_OVER, src_image=0xbe01378, mask_image=0x0, dst_image=0xac88e78, src_x=0, src_y=0, mask_x=0, mask_y=0, dest_x=0, dest_y=0, width=22, height=22, src_repeat=0, mask_repeat=0, region=0xbffd24b8, composite_rect=0xb7ef09c0 ) at pixman-utils.c:447 n = 0 pbox = 0xbffd24b8 w = 22 h = 22 w_this = 22 h_this = 22 x_msk = 0 y_msk = 0 x_src = 0 y_src = 0 x_dst = 0 y_dst = 0 #3 0xb7ee0562 in _pixman_run_fast_path (paths=0xb7ef8400, imp=0xab01b08, op=PIXMAN_OP_OVER, src=0xbe01378, mask=0x0, dest=0xac88e78, src_x=, src_y=, mask_x=, mask_y=, dest_x=, dest_y=, width=, height=) at pixman-utils.c:748 extents = region = {extents = {x1 = 0, y1 = 0, x2 = 22, y2 = 22}, data = 0x0} func = 0xb7ef09c0 src_repeat = 0 mask_repeat = 0 result = 1 #4 0xb7eebd0b in sse2_composite (imp=0xab01b08, op=PIXMAN_OP_OVER, src=0xbe01378, mask=0x0, dest=0xac88e78, src_x=0, src_y=0, mask_x=0, mask_y=0, dest_x=0, dest_y=0, width=Cannot access memory at address 0xb27d9040 ) at pixman-sse2.c:5563 No locals. ---Type to continue, or q to quit--- #5 0xb7eb4e73 in _pixman_implementation_composite (imp=0xab01b08, op=PIXMAN_OP_OVER, src=0xbe01378, mask=0x0, dest=0xac88e78, src_x=0, src_y=0, mask_x=0, mask_y=0, dest_x=0, dest_y=0, width=22, height=22) at pixman-implementation.c:229 No locals. #6 0xb7ed8eec in pixman_image_composite (op=PIXMAN_OP_OVER, src=0xbe01378, mask=0x0, dest=0xac88e78, src_x=, src_y=, mask_x=, mask_y=, dest_x=, dest_y=, width=, height=) at pixman.c:199 src_bits = src_dx = src_dy = mask_bits = mask_dx = mask_dy = dest_bits = dest_dx = dest_dy = #7 0xb77d96f3 in fbComposite (op=0 '\0', pSrc=0xc386e68, pMask=0x0, pDst=0xac7aca8, xSrc=0, ySrc=0, xMask=, yMask=, xDst=, yDst=, width=22, height=22) at fbpict.c:172 src = 0xbe01378 mask = 0x0 dest = 0xac88e78 #8 0xb784f6c7 in uxa_check_composite (op=0 '\0', pSrc=0xc386e68, pMask=0x0, pDst=0xac7aca8, xSrc=, ySrc=, xMask=, yMask=, xDst=, yDst=, width=, height=) at uxa-unaccel.c:366 __FUNCTION__ = "uxa_check_composite" #9 0xb784de69 in uxa_composite (op=3 '\3', pSrc=0xc386e68, pMask=0x0, pDst=0xac7aca8, xSrc=0, ySrc=0, xMask=0, yMask=0, xDst=0, yDst=0, width=22, height=22) at uxa-render.c:783 uxa_screen = 0x82236b0 ret = -1216475820 saveMaskRepeat = 0 region = {extents = {x1 = 10424, y1 = -16387, x2 = 14363, y2 = 2066}, data = 0xbea0f78} #10 0x081248ea in damageComposite (op=0 '\0', pSrc=0xc386e68, pMask=0x0, pDst=0xac7aca8, xSrc=, ySrc=, xMask=, yMask=, xDst=, yDst=, width=, height=) at damage.c:643 ps = 0x8222d10 ---Type to continue, or q to quit--- pScrPriv = 0x8222e28 #11 0x0811d8cd in CompositePicture (op=3 '\3', pSrc=0xc386e68, pMask=0x0, pDst=0xac7aca8, xSrc=0, ySrc=0, xMask=, yMask=, xDst=, yDst=, width=22, height=22) at picture.c:1676 No locals. #12 0x08119037 in ProcRenderComposite (client=0xbdc2728) at render.c:712 pSrc = 0xc386e68 pMask = 0x0 pDst = 0xac7aca8 #13 0x08115cc5 in ProcRenderDispatch (client=0xb27d9014) at render.c:2041 No locals. #14 0x0809bc2f in Dispatch () at dispatch.c:426 result = client = 0xbdc2728 nready = 0 start_tick = 920 #15 0x08071a2c in main (argc=8, argv=0xbffd2b44, envp=Cannot access memory at address 0xb27d901c ) at main.c:282 i = 1 alwaysCheckForInput = {0, 1} (gdb) cont Continuing.