Hi,
I triggered this oops with 2.6.12 (UP) and the CVS 20050625 MGA/DRM drivers:
Jun 25 22:14:59 hypercube kernel: Linux agpgart interface v0.101 (c) Dave Jones
Jun 25 22:14:59 hypercube kernel: [drm] Initialized drm 1.0.0 20040925
Jun 25 22:14:59 hypercube kernel: agpgart: Detected an Intel 440BX Chipset.
Jun 25 22:14:59 hypercube kernel: agpgart: AGP aperture is 64M @ 0xf8000000
Jun 25 22:14:59 hypercube kernel: [drm] Initialized mga 3.2.0 20050607 on minor
0:
Jun 25 22:14:59 hypercube kernel: [drm] Used old pci detect: framebuffer loaded
Jun 25 22:14:59 hypercube kernel: Unable to handle kernel NULL pointer
dereference at virtual
address 00000000
Jun 25 22:14:59 hypercube kernel: printing eip:
Jun 25 22:14:59 hypercube kernel: c01a0b37
Jun 25 22:14:59 hypercube kernel: *pde = 11a8c067
Jun 25 22:14:59 hypercube kernel: *pte = 00000000
Jun 25 22:14:59 hypercube kernel: Oops: 0000 [#1]
Jun 25 22:14:59 hypercube kernel: Modules linked in: mga intel_agp drm agpgart
deflate
zlib_deflate zlib_inflate twofish serpent aes_i586 blowfish des sha256 sha1
crypto_null af_key
ip_nat_ftp ip_conntrack_ftp snd_rtctimer eeprom i2c_sensor pcspkr parport_pc lp
parport autofs4
i2c_piix4 i2c_dev i2c_core sunrpc ipv6 ipt_mac ipt_LOG ipt_state iptable_filter
ipt_MASQUERADE
iptable_nat ip_conntrack ipt_TOS iptable_mangle ip_tables binfmt_misc
nls_iso8859_1 nls_cp437 vfat
fat dm_mod pwc videodev video button uhci_hcd ohci_hcd ehci_hcd snd_usb_audio
snd_usb_lib
snd_ens1370 gameport snd_rawmidi snd_seq_device snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer
snd_page_alloc snd_ak4531_codec snd soundcore prism2_usb p80211 ne 8390 floppy
ide_cd cdrom evdev
ext3 jbd
Jun 25 22:14:59 hypercube kernel: CPU: 0
Jun 25 22:14:59 hypercube kernel: EIP: 0060:[<c01a0b37>] Not tainted VLI
Jun 25 22:14:59 hypercube kernel: EFLAGS: 00013246 (2.6.12)
Jun 25 22:14:59 hypercube kernel: EIP is at get_kobj_path_length+0x27/0x40
Jun 25 22:14:59 hypercube kernel: eax: 00000000 ebx: 00000000 ecx: ffffffff
edx: ffffffff
Jun 25 22:14:59 hypercube kernel: esi: 00000001 edi: 00000000 ebp: d7275730
esp: c8617e74
Jun 25 22:14:59 hypercube kernel: ds: 007b es: 007b ss: 0068
Jun 25 22:14:59 hypercube kernel: Process X (pid: 4563, threadinfo=c8617000
task=c93a1020)
Jun 25 22:14:59 hypercube kernel: Stack: 000000d0 cf14b3e0 cb74780e d7275730
c01a0bcc cf14b3e0
dab3d0d4 cf14b3e0
Jun 25 22:14:59 hypercube kernel: cb74780e d7275730 c01a15fb cb747800
c02b4319 c02b42f0
d47c1860 cae48240
Jun 25 22:14:59 hypercube kernel: cb747800 c03826a8 c02b42f0 dab3d0e8
00000000 00003246
c02e46c0 dab3d0e8
Jun 25 22:14:59 hypercube kernel: Call Trace:
Jun 25 22:14:59 hypercube gdm[4542]: gdm_slave_xioerror_handler: Fatal X error
- Restarting :0
Jun 25 22:14:59 hypercube kernel: [<c01a0bcc>] kobject_get_path+0x1c/0x70
Jun 25 22:14:59 hypercube kernel: [<c01a15fb>] kobject_hotplug+0x13b/0x2b0
Jun 25 22:14:59 hypercube kernel: [<c01a0ebd>] kobject_unregister+0xd/0x20
Jun 25 22:14:59 hypercube kernel: [<dab31407>] drm_takedown+0x327/0x3b0 [drm]
Jun 25 22:14:59 hypercube kernel: [<dab31eb0>] drm_fasync+0x40/0x90 [drm]
Jun 25 22:14:59 hypercube kernel: [<dab3231b>] drm_release+0x41b/0x4c0 [drm]
Jun 25 22:15:00 hypercube kernel: [<dab31829>] drm_ioctl+0x1a9/0x1fe [drm]
Jun 25 22:15:00 hypercube kernel: [<c01524af>] dentry_open+0xbf/0x1f0
Jun 25 22:15:00 hypercube kernel: [<c012b250>]
autoremove_wake_function+0x0/0x50
Jun 25 22:15:00 hypercube kernel: [<c0246400>]
csum_partial_copy_fromiovecend+0xd0/0x250
Jun 25 22:15:00 hypercube kernel: [<dab31680>] drm_ioctl+0x0/0x1fe [drm]
Jun 25 22:15:00 hypercube kernel: [<c0153f46>] __fput+0x106/0x140
Jun 25 22:15:00 hypercube kernel: [<c01527d8>] filp_close+0x48/0x90
Jun 25 22:15:00 hypercube kernel: [<c0102ecf>] sysenter_past_esp+0x54/0x75
Jun 25 22:15:00 hypercube kernel: Code: 00 00 00 00 55 ba ff ff ff ff 89 c5 57
56 be 01 00 00 00
53 31 db 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 8b 7d 00 89 d1 89 d8 <f2> ae
f7 d1 49 8b 6d 24
8d 74 31 01 85 ed 75 e9 5b 89 f0 5e 5f
Jun 25 22:15:44 hypercube kernel: <6>SysRq : Emergency Remount R/O
Cheers,
Chris
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