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X-Server Debug



I am trying to debug the X-Server.  It crashes.
Using GDB, I get the following message

(--) SVGA: Mode "320x240" needs vert refresh rate of 75.14 Hz. Deleted.
Warning: No FontPath specified, using compiled-in default.
(--) FontPath set to
"/usr/X11R6/lib/X11/fonts/misc/,/usr/X11R6/lib/X11/fonts/Sp
eedo/,/usr/X11R6/lib/X11/fonts/Type1/,/usr/X11R6/lib/X11/fonts/75dpi/,/usr/X
11R6
/lib/X11/fonts/100dpi/"
    0       0 [main] c:\usr\X11R6\bin\XF86_SVGA.exe 1033 handle_exceptions:
Exce
ption: STATUS_PRIVILEGED_INSTRUCTION
    0   21106 [main] XF86_SVGA 1033 stackdump: Dumping stack trace to
XF86_SVGA.
exe.stackdump

program exited with code 04.

I cannot backtrace, although I compiled it with -g option. When I try to
backtrace
I get "No Stack".

The stackdump files shows the following.  Perhaps Ernie or Chris
can shed some light on what this STATUS_PRIVILEGED_INSTRUCTION mean, please?

Thanks
Suhaib

20398   41504 [main] XF86_SVGA 1033 exception: trapped!
59524  101028 [main] XF86_SVGA 1033 exception: code 0xC0000096 at 0x50488C
46467  147495 [main] XF86_SVGA 1033 exception: ax 0x0 bx 0x0 cx 0x18 dx
0xCF8
25265  172760 [main] XF86_SVGA 1033 exception: si 0x0 di 0x0 bp 0x2DDFC24 sp
0x2DDFBFC
29611  202371 [main] XF86_SVGA 1033 exception: exception is:
STATUS_PRIVILEGED_INSTRUCTION
39689  242060 [main] XF86_SVGA 1033 stack: Stack trace:
30468  272528 [main] XF86_SVGA 1033 stack: frame 0: sp = 0x2DDF9F4, pc =
0x6100B5FE
29640  302168 [main] XF86_SVGA 1033 stack: frame 1: sp = 0x2DDFA14, pc =
0x6100BA4B
40484  342652 [main] XF86_SVGA 1033 stack: frame 2: sp = 0x2DDFA54, pc =
0x77F96666
30318  372970 [main] XF86_SVGA 1033 stack: frame 3: sp = 0x2DDFA78, pc =
0x77F8912B
41349  414319 [main] XF86_SVGA 1033 stack: frame 4: sp = 0x2DDFB04, pc =
0x77F763BA
28024  442343 [main] XF86_SVGA 1033 stack: frame 5: sp = 0x2DDFC24, pc =
0x50509E
21985  464328 [main] XF86_SVGA 1033 stack: frame 6: sp = 0x2DDFD74, pc =
0x4E456B
79655  543983 [main] XF86_SVGA 1033 stack: frame 7: sp = 0x2DDFDC4, pc =
0x4C253A
38772  582755 [main] XF86_SVGA 1033 stack: frame 8: sp = 0x2DDFE24, pc =
0x4F8206
40053  622808 [main] XF86_SVGA 1033 stack: frame 9: sp = 0x2DDFE64, pc =
0x4F2874
33620  656428 [main] XF86_SVGA 1033 stack: frame 10: sp = 0x2DDFEB4, pc =
0x507305
46275  702703 [main] XF86_SVGA 1033 stack: frame 11: sp = 0x2DDFEF4, pc =
0x610046E8
40288  742991 [main] XF86_SVGA 1033 stack: frame 12: sp = 0x2DDFF60, pc =
0x67401B
39921  782912 [main] XF86_SVGA 1033 stack: frame 13: sp = 0x2DDFF90, pc =
0x40103D
48394  831306 [main] XF86_SVGA 1033 stack: frame 14: sp = 0x2DDFFC0, pc =
0x77F1BA06
33707  865013 [main] XF86_SVGA 1033 stack: frame 15: sp = 0x2DDFFF0, pc =
0x0
38155  903168 [main] XF86_SVGA 1033 stack: End of stack trace


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