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Reading symbols from /opt/bin/Xorg...(no debugging symbols found)...done.
[New LWP 101512]
[New LWP 100271]
[New LWP 100127]
Core was generated by `/opt/bin/X -listen tcp :0 -auth /var/db/xdm/authdir/authfiles/A:0-zhv9Ez'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00000008026b7a6a in thr_kill () from /lib/libc.so.7
[Current thread is 1 (LWP 101512)]
(gdb) #0  0x00000008026b7a6a in thr_kill () from /lib/libc.so.7
No symbol table info available.
#1  0x00000008026b79a6 in raise () from /lib/libc.so.7
No symbol table info available.
#2  0x00000008026b6149 in abort () from /lib/libc.so.7
No symbol table info available.
#3  0x000000000059f35e in OsAbort ()
No symbol table info available.
#4  0x000000000047cccb in ddxGiveUp ()
No symbol table info available.
#5  0x00000000005a6022 in ?? ()
No symbol table info available.
#6  0x00000000005a4ae8 in FatalError ()
No symbol table info available.
#7  0x000000000059d0b7 in ?? ()
No symbol table info available.
#8  0x0000000802367a26 in ?? () from /lib/libthr.so.3
No symbol table info available.
#9  0x000000080236711c in ?? () from /lib/libthr.so.3
No symbol table info available.
#10 <signal handler called>
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.
#12 0x0000000806fc9882 in gbm_dri_bo_import (gbm=0x804049600, type=21763, 
    buffer=0x7fffffffe828, usage=0) at backends/dri/gbm_dri.c:921
        fd_data = 0x7fffffffe828
        stride = 0
        offset = 0
        dri_format = 875713089
        dri = 0x804049600
        bo = 0x800a1d580
        image = 0x960
        dri_use = 0
        gbm_format = 114786304
#13 0x0000000806fc88dc in gbm_bo_import (gbm=0x804049600, type=21763, 
    buffer=0x7fffffffe828, usage=0) at main/gbm.c:443
No locals.
#14 0x0000000806d8011e in glamor_back_pixmap_from_fd (pixmap=0x80ebbd940, 
    fd=42, width=640, height=480, stride=0, depth=24 '\030', bpp=32 ' ')
    at ../../../glamor/glamor_egl.c:552
        screen = 0x804113000
        scrn = 0x80410f400
        glamor_egl = 0x80403c1a0
        bo = 0x18
        import_data = {fd = 42, width = 640, height = 480, stride = 0, 
          format = 875713089}
        ret = 32767
#15 0x0000000806d80273 in glamor_pixmap_from_fd (screen=0x804113000, fd=42, 
    width=640, height=480, stride=0, depth=24 '\030', bpp=32 ' ')
    at ../../../glamor/glamor_egl.c:578
        pixmap = 0x80ebbd940
        ret = 0
#16 0x0000000806715b13 in radeon_dri3_pixmap_from_fd (screen=0x804113000, 
    fd=42, width=640, height=480, stride=0, depth=24 '\030', bpp=32 ' ')
    at radeon_dri3.c:163
        pixmap = 0x3600001
#17 0x000000000056d50e in ?? ()
No symbol table info available.
#18 0x000000000056cd4c in ?? ()
No symbol table info available.
#19 0x00000000004304fd in ?? ()
No symbol table info available.
#20 0x0000000000439e57 in ?? ()
No symbol table info available.
#21 0x0000000000424f8f in _start ()
No symbol table info available.
(gdb)