[KMS intel] X crashes on VT switching -- gdb trace attached

[Stefano Avallone]

Hi,

I get X crashing upon VT switching while using KDE 4.2 (with composite 
enabled):

Backtrace:
0: /opt/gfx-test/bin/Xorg(xorg_backtrace+0x39) [0x80bf0c1]
1: /opt/gfx-test/bin/Xorg [0x80ad8a0]                     
2: [0xb803b40c]                                           
3: /opt/gfx-test/lib/libpixman-1.so.0 [0xb7ed3cee]        
4: /opt/gfx-test/lib/libpixman-1.so.0 [0xb7ed46a0]        
5: /opt/gfx-test/lib/libpixman-1.so.0 [0xb7fa6515]
6: /opt/gfx-test/lib/libpixman-1.so.0 [0xb7ea2751]
7: /opt/gfx-test/lib/libpixman-1.so.0(pixman_image_composite+0x146) 
[0xb7ecadda]
8: /opt/gfx-test/lib/xorg/modules/libfb.so(fbComposite+0x1cd) [0xb77724d2]
9: /opt/gfx-test/lib/xorg/modules/drivers/intel_drv.so [0xb77f9cb7]
10: /opt/gfx-test/lib/xorg/modules/drivers/intel_drv.so [0xb77f8073]
11: /opt/gfx-test/bin/Xorg [0x8153b78]
12: /opt/gfx-test/bin/Xorg(CompositePicture+0x197) [0x814e692]
13: /opt/gfx-test/bin/Xorg [0x814134d]
14: /opt/gfx-test/bin/Xorg [0x8144ed2]
15: /opt/gfx-test/bin/Xorg [0x8092513]
16: /opt/gfx-test/bin/Xorg [0x80673a0]
17: /lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7b1d775]
18: /opt/gfx-test/bin/Xorg [0x8066df1]
Segmentation fault at address 0xb6c3e000

I am using self-compiled git master of pixman, drm, mesa, xserver, x-f-video-
intel etc. The video card is an Intel GM965, KMS is enabled, kernel 2.6.31-rc3 
and no xorg.conf

Find attached xorg.log and the gdb trace.

Please note that VT switching works while at the KDM login window (i.e., 
before logging into KDE).

Could anyone please advice how to solve this issue? Shall I provide more info?

Many thanks in advance,
Stefano



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