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Linux agpgart interface v0.99 (c) Jeff Hartmann
agpgart: Maximum main memory to use for agp memory: 690M
agpgart: Detected SiS 746 chipset
agpgart: AGP aperture is 64M @ 0xd0000000
[drm] AGP 0.99 Aperture @ 0xd0000000 64MB
[drm] Initialized mga 3.0.2 20010321 on minor 0
Unable to handle kernel NULL pointer dereference at virtual address 0000002c
 printing eip:
f0b755dc
*pde = 15327067
*pte = 00000000
Oops: 0000
CPU:    0
EIP:    0010:[<f0b755dc>]    Not tainted
EFLAGS: 00013202
eax: 0000002c   ebx: 000000cc   ecx: f0b6d000   edx: ddd52d80
esi: ee83f6c0   edi: ee83f6c0   ebp: eaeb63c0   esp: ee2d1f20
ds: 0018   es: 0018   ss: 0018
Process Xorg (pid: 5911, stackpage=ee2d1000)
Stack: ee2d1f84 ffffffeb ffffffed 00000000 ee83f6c0 eaeb63c0 c190e440 c013ddae
       eaeb63c0 ee83f6c0 ee83f6c0 eaeb63c0 00000000 c013c9ed eaeb63c0 ee83f6c0
       00008002 dcd63000 40197ff4 bffff698 c013c918 d2d0f940 c190e440 00008002
Call Trace:    [<c013ddae>] [<c013c9ed>] [<c013c918>] [<c013cc93>] [<c0108abf>]

Code: 8b 08 8b 77 10 89 c2 85 c9 75 70 89 57 10 8b 42 20 85 c0 75