http://cgit.freedesktop.org/xorg/xserver/tree/record/record.c?h=server-1.11-branch&id=d113b2911573f3685dc644c6fdd1979aa880b99f#n619


Reading symbols from /usr/lib/xorg/modules/drivers/vesa_drv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/xorg/modules/drivers/vesa_drv.so
Reading symbols from /usr/lib/xorg/modules/drivers/fbdev_drv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/xorg/modules/drivers/fbdev_drv.so
Reading symbols from /usr/lib/xorg/modules/libfbdevhw.so...Reading symbols from /usr/lib/debug/usr/lib/xorg/modules/libfbdevhw.so...done.
done.
Loaded symbols for /usr/lib/xorg/modules/libfbdevhw.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/x86_64-linux-gnu/dri/i965_dri.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
Reading symbols from /usr/lib/x86_64-linux-gnu/dri/libdricore.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/dri/libdricore.so
Reading symbols from /usr/lib/x86_64-linux-gnu/dri/libglsl.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/dri/libglsl.so
Reading symbols from /lib/x86_64-linux-gnu/libexpat.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libexpat.so.1
Reading symbols from /usr/lib/x86_64-linux-gnu/libstdc++.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/x86_64-linux-gnu/libstdc++.so.6
Reading symbols from /usr/lib/xorg/modules/input/evdev_drv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/xorg/modules/input/evdev_drv.so
Reading symbols from /usr/lib/xorg/modules/input/synaptics_drv.so...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/xorg/modules/input/synaptics_drv.so
Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2
Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1
Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.so.2
Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...(no debugging symbols found)...done.
Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2
0x00007fcb6cb338f3 in select () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) cont
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x00007fcb6b4ed6c8 in RecordAReply (pcbl=0x7ebaa0, nulldata=0x0, calldata=0x7fff2af83b50) at ../../record/record.c:619
619     ../../record/record.c: Bestand of map bestaat niet.
        in ../../record/record.c
(gdb) source /dev/shm/xorg-7.6+7ubuntu7edgers2
/dev/shm/xorg-7.6+7ubuntu7edgers2: Onderbroken systeemaanroep.
(gdb) source /dev/shm/xorg-7.6+7ubuntu7edgers2
/dev/shm/xorg-7.6+7ubuntu7edgers2: Gelukt.
(gdb) bt
#0  0x00007fcb6b4ed6c8 in RecordAReply (pcbl=0x7ebaa0, nulldata=0x0, calldata=0x7fff2af83b50) at ../../record/record.c:619
#1  0x0000000000438464 in _CallCallbacks (pcbl=0x7ebaa0, call_data=0x7fff2af83b50) at ../../dix/dixutils.c:745
#2  0x000000000056a3fa in CallCallbacks (call_data=0x7fff2af83b50, pcbl=0x7ebaa0) at ../../include/callback.h:86
#3  WriteToClient (who=0x26e3b40, count=32, __buf=0x7fff2af83bd0) at ../../os/io.c:834
#4  0x00007fcb6aed2cf2 in ProcDRI2WaitMSCReply (client=<optimized out>, ust=<optimized out>, msc=<optimized out>, sbc=<optimized out>)
    at ../../../../hw/xfree86/dri2/dri2ext.c:496
#5  0x00007fcb6aed13f3 in DRI2WaitMSCComplete (client=0x26e3b40, pDraw=<optimized out>, frame=3816, tv_sec=<optimized out>,
    tv_usec=585360) at ../../../../hw/xfree86/dri2/dri2.c:688
#6  0x00007fcb6aca2df4 in I830DRI2FrameEventHandler (frame=3816, tv_sec=1324221975, tv_usec=585360, swap_info=0x292aed0)
    at ../../src/intel_dri.c:965
#7  0x00007fcb6b0dc503 in drmHandleEvent () from /usr/lib/x86_64-linux-gnu/libdrm.so.2
#8  0x0000000000437c6b in WakeupHandler (result=1, pReadmask=0x7eb800) at ../../dix/dixutils.c:421
#9  0x0000000000564406 in WaitForSomething (pClientsReady=0x2826ca0) at ../../os/WaitFor.c:235
#10 0x0000000000433ae2 in Dispatch () at ../../dix/dispatch.c:368
#11 0x0000000000422fca in main (argc=10, argv=<optimized out>, envp=<optimized out>) at ../../dix/main.c:287
(gdb) info locals
pContext = <optimized out>
pRCAP = 0x7fff2af83b50
eci = <optimized out>
majorop = <optimized out>
pri = 0x7fff2af83b50
client = 0x26e3b40
stuff = 0x7fcb67510010
__PRETTY_FUNCTION__ = "RecordAReply"
(gdb) print stuff
$1 = (xReq *) 0x7fcb67510010
(gdb) print stuff->client
There is no member named client.
(gdb) print stuff->reqType
Cannot access memory at address 0x7fcb67510010
(gdb) print *stuff
Cannot access memory at address 0x7fcb67510010
(gdb) print stuff
$2 = (xReq *) 0x7fcb67510010