vesa driver issue in Rawhide KVM guest

[Andre Robatino]

The vesa driver doesn't work properly (although the default cirrus driver works
fine). For testing, I use the following 4-line xorg.conf:

Section "Device"
  Identifier "Videocard0"
  Driver "vesa"
EndSection

X starts up, then crashes, then restarts, in a loop. The following shows up in
Xorg.0.log:

Backtrace:
[  1511.080] 0: /usr/bin/Xorg (xorg_backtrace+0x2d) [0x482ebd]
[  1511.080] 1: /usr/bin/Xorg (0x400000+0x52b96) [0x452b96]
[  1511.080] 2: /lib64/libc.so.6 (0x32b9a00000+0x340e0) [0x32b9a340e0]
[  1511.080] 3: /usr/lib64/libpixman-1.so.0
(pixman_image_set_has_client_clip+0x0) [0x32c4e1a6b0]
[  1511.080] 4: /usr/lib64/xorg/modules/libfb.so (0x7f31bf3de000+0x133ef)
[0x7f31bf3f13ef]
[  1511.080] 5: /usr/lib64/xorg/modules/libfb.so (fbComposite+0x101)
[0x7f31bf3f17a5]
[  1511.080] 6: /usr/bin/Xorg (0x400000+0xabe66) [0x4abe66]
[  1511.080] 7: /usr/bin/Xorg (0x400000+0xa6b6d) [0x4a6b6d]
[  1511.080] 8: /usr/bin/Xorg (0x400000+0x2af82) [0x42af82]
[  1511.080] 9: /usr/bin/Xorg (0x400000+0x2153a) [0x42153a]
[  1511.081] 10: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x32b9a1ee7d]
[  1511.087] 11: /usr/bin/Xorg (0x400000+0x21009) [0x421009]
[  1511.087] Segmentation fault at address 0x28
[  1511.087] 
Fatal server error:
[  1511.087] Caught signal 11 (Segmentation fault). Server aborting
[  1511.087] 
[  1511.087]

Does anyone else running a Rawhide KVM guest see this, and if so, any idea what
component(s) to report it under? I have all updates up to 20101008.