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"...
(no debugging symbols found)
Attaching to program: /usr/bin/Xorg, process 3082
Reading symbols from /usr/lib/libpciaccess.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libpciaccess.so.0
Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /lib/libpthread.so.0...(no debugging symbols found)...done.
[Thread debugging using libthread_db enabled]
[New Thread 0x7f7b0dbee6e0 (LWP 3082)]
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /usr/lib/libXfont.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXfont.so.1
Reading symbols from /usr/lib/libXau.so.6...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libfontenc.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfontenc.so.1
Reading symbols from /usr/lib/libpixman-1.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libpixman-1.so.0
Reading symbols from /usr/lib/libhal.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libhal.so.1
Reading symbols from /lib/libdbus-1.so.3...
(no debugging symbols found)...done.
Loaded symbols for /lib/libdbus-1.so.3
Reading symbols from /usr/lib/libXdmcp.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /usr/lib/libcrypto.so.0.9.8...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libcrypto.so.0.9.8
Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /lib/librt.so.1...
(no debugging symbols found)...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib/libfreetype.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libz.so.1...
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/xorg/modules/extensions/libdri.so...(no debugging symbols found)...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/extensions/libglx.so...done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libglx.so
Reading symbols from /usr/lib/xorg/modules/extensions/libextmod.so...done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libextmod.so
Reading symbols from /usr/lib/xorg/modules/fonts/libfreetype.so...done.
Loaded symbols for /usr/lib/xorg/modules//fonts/libfreetype.so
Reading symbols from /usr/lib/xorg/modules/libint10.so...done.
Loaded symbols for /usr/lib/xorg/modules//libint10.so
Reading symbols from /usr/lib/xorg/modules/libvbe.so...done.
Loaded symbols for /usr/lib/xorg/modules//libvbe.so
Reading symbols from /usr/lib/xorg/modules/extensions/libdbe.so...done.
Loaded symbols for /usr/lib/xorg/modules/extensions//libdbe.so
Reading symbols from /usr/lib/xorg/modules/extensions/librecord.so...done.
Loaded symbols for /usr/lib/xorg/modules/extensions//librecord.so
Reading symbols from /usr/lib/xorg/modules/drivers/intel_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/drivers//intel_drv.so
Reading symbols from /usr/lib/libdrm_intel.so.1...done.
Loaded symbols for /usr/lib/libdrm_intel.so.1
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/input/mouse_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/input//mouse_drv.so
Reading symbols from /usr/lib/xorg/modules/libfb.so...done.
Loaded symbols for /usr/lib/xorg/modules//libfb.so
Reading symbols from /usr/lib/dri/swrast_dri.so...done.
Loaded symbols for /usr/lib/dri/swrast_dri.so
Reading symbols from /usr/lib/libexpat.so.1...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /usr/lib/xorg/modules/input/evdev_drv.so...done.
Loaded symbols for /usr/lib/xorg/modules/input//evdev_drv.so
0x00007f7b0ba3d463 in select () from /lib/libc.so.6
(gdb) cont
Continuing.

Program received signal SIGPIPE, Broken pipe.
[Switching to Thread 0x7f7b0dbee6e0 (LWP 3082)]
0x00007f7b0ba3cf03 in writev () from /lib/libc.so.6
(gdb) cont
Continuing.

Program received signal SIGPIPE, Broken pipe.
0x00007f7b0ba3cf03 in writev () from /lib/libc.so.6
(gdb) cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x00007f7b09d4e772 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1
Current language:  auto; currently asm