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 "x86_64-linux-gnu"...
(gdb) attach 5996
Attaching to program: /usr/bin/Xorg, process 5996
Reading symbols from /lib/libdl.so.2...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /usr/lib/libXfont.so.1...done.
Loaded symbols for /usr/lib/libXfont.so.1
Reading symbols from /usr/lib/libXau.so.6...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libfontenc.so.1...done.
Loaded symbols for /usr/lib/libfontenc.so.1
Reading symbols from /usr/lib/libpixman-1.so.0...done.
Loaded symbols for /usr/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 /usr/lib/libXdmcp.so.6...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /lib/libm.so.6...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/librt.so.1...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.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 /lib/libpthread.so.0...done.
[Thread debugging using libthread_db enabled]
[New Thread 0x7f547c1d46e0 (LWP 5996)]
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /usr/lib/xorg/modules/libpcidata.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libpcidata.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libpcidata.so
Reading symbols from /usr/lib/xorg/modules/extensions/libextmod.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libextmod.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libextmod.so
Reading symbols from /usr/lib/xorg/modules/extensions/libdbe.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libdbe.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libdbe.so
Reading symbols from /usr/lib/xorg/modules/extensions/libglx.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libglx.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libglx.so
Reading symbols from /usr/lib/xorg/modules/fonts/libfreetype.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/fonts/libfreetype.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//fonts/libfreetype.so
Reading symbols from /usr/lib/xorg/modules/extensions/librecord.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/librecord.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions//librecord.so
Reading symbols from /usr/lib/xorg/modules/extensions/libdri.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/extensions/libdri.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libdri.so
Reading symbols from /usr/lib/libdrm.so.2...done.
Loaded symbols for /usr/lib/libdrm.so.2
Reading symbols from /usr/lib/xorg/modules/drivers/intel_drv.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/drivers/intel_drv.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/drivers//intel_drv.so
Reading symbols from /usr/lib/xorg/modules/input/synaptics_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/input//synaptics_drv.so
Reading symbols from /usr/lib/xorg/modules/input/mouse_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/input//mouse_drv.so
Reading symbols from /usr/lib/xorg/modules/input/kbd_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/input//kbd_drv.so
Reading symbols from /usr/lib/xorg/modules/libint10.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libint10.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libint10.so
Reading symbols from /usr/lib/xorg/modules/libvbe.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libvbe.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libvbe.so
Reading symbols from /usr/lib/xorg/modules/libvgahw.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libvgahw.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libvgahw.so
Reading symbols from /usr/lib/xorg/modules/libfb.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libfb.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libfb.so
Reading symbols from /usr/lib/xorg/modules/libexa.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libexa.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules//libexa.so
Reading symbols from /usr/lib/dri/i915_dri.so...done.
Loaded symbols for /usr/lib/dri/i915_dri.so
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
0x00007f547a7c13c7 in ioctl () from /lib/libc.so.6
(gdb) c
Continuing.

Program received signal SIGTERM, Terminated.
[Switching to Thread 0x7f547c1d46e0 (LWP 5996)]
0x00007f547a7c13c7 in ioctl () from /lib/libc.so.6
(gdb) bt
#0  0x00007f547a7c13c7 in ioctl () from /lib/libc.so.6
#1  0x00007f5478ec92cd in drmCommandWrite () from /usr/lib/libdrm.so.2
#2  0x00007f546778cb9e in intelWaitIrq () from /usr/lib/dri/i915_dri.so
#3  0x00007f546778d8f5 in intelWaitForIdle () from /usr/lib/dri/i915_dri.so
#4  0x00007f546778d921 in intelFinish () from /usr/lib/dri/i915_dri.so
#5  0x00007f5479713c9e in __glXDisp_Finish (cl=0xa11520, 
    pc=<value optimized out>) at ../../../GL/glx/single2.c:238
#6  0x00007f54796f6c6c in __glXDispatch (client=0xa115a0)
    at ../../../GL/glx/glxext.c:561
#7  0x000000000044eaaf in Dispatch () at ../../dix/dispatch.c:502
#8  0x0000000000436b9d in main (argc=7, argv=0x7fff841ff618, 
    envp=<value optimized out>) at ../../dix/main.c:452
(gdb) bt full
#0  0x00007f547a7c13c7 in ioctl () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f5478ec92cd in drmCommandWrite () from /usr/lib/libdrm.so.2
No symbol table info available.
#2  0x00007f546778cb9e in intelWaitIrq () from /usr/lib/dri/i915_dri.so
No symbol table info available.
#3  0x00007f546778d8f5 in intelWaitForIdle () from /usr/lib/dri/i915_dri.so
No symbol table info available.
#4  0x00007f546778d921 in intelFinish () from /usr/lib/dri/i915_dri.so
No symbol table info available.
#5  0x00007f5479713c9e in __glXDisp_Finish (cl=0xa11520, 
    pc=<value optimized out>) at ../../../GL/glx/single2.c:238
	cx = (__GLXcontext *) 0xae2b00
	client = <value optimized out>
	error = 0
#6  0x00007f54796f6c6c in __glXDispatch (client=0xa115a0)
    at ../../../GL/glx/glxext.c:561
	stuff = (xGLXSingleReq *) 0x10f6150
	opcode = <value optimized out>
	proc = (__GLXdispatchSingleProcPtr) 0x7f5479713c70 <__glXDisp_Finish>
	cl = (__GLXclientState *) 0xa11520
	retval = 1
#7  0x000000000044eaaf in Dispatch () at ../../dix/dispatch.c:502
	clientReady = <value optimized out>
	result = <value optimized out>
	client = (ClientPtr) 0xa115a0
	nready = 0
	start_tick = 2240
#8  0x0000000000436b9d in main (argc=7, argv=0x7fff841ff618, 
    envp=<value optimized out>) at ../../dix/main.c:452
	i = 1
	error = 0
	xauthfile = <value optimized out>
	alwaysCheckForInput = {0, 1}
(gdb) c
Continuing.