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kernel oops

Hello everyone,

After switching from gcc-3.4 branch to pure64, I am experiencing regular
kernel oops. By regular i mean at least once per day.

I've decided to use the debian packaged kernel (not a custom compiled
vanilla kernel). The oops happen on several processes, like gkrellm,
firefox and even gnome clock applet.

Here is the output from dmesg:

Unable to handle kernel NULL pointer dereference at 000000000000000a
PML4 938a067 PGD 14d79067 PMD 0
Oops: 0000 [1]
Modules linked in: isofs fglrx vmnet vmmon parport_pc lp parport ipv6
nfs lockd sunrpc eth1394 ohci1394 ieee1394 sata_sil zr36060 adv7175
saa7110 zr36067 i2c_algo_bit videocodec videodev sata_nv libata scsi_mod
ftdi_sio usbserial snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss
snd_pcm snd_timer snd_page_alloc gameport snd_mpu401_uart snd_rawmidi
snd_seq_device snd soundcore forcedeth ehci_hcd usblp ohci_hcd
nls_iso8859_1 nls_cp437 vfat fat ext2 it87 eeprom i2c_sensor i2c_isa
i2c_core tsdev mousedev evdev ide_cd cdrom psmouse sk98lin ext3 jbd
mbcache ide_generic ide_disk amd74xx ide_core unix fbcon font vesafb
cfbcopyarea cfbimgblt cfbfillrect
Pid: 21615, comm: firefox-bin Tainted: PF  2.6.9-10-amd64-k8
RIP: 0010:[<ffffffff802c178b>] [<ffffffff802c178b>]
RSP: 0018:0000010014dabbe0  EFLAGS: 00010206
RAX: 0000000020510000 RBX: 00000100060a3000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000808 RDI: 000001003a590180
RBP: 000001003c35f800 R08: 0000000000000000 R09: 000001003c35f800
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000808
R13: 0000010014dabe08 R14: 000001003a590180 R15: 0000010014dabc68
FS:  0000002a95c388f0(0000) GS:ffffffff803ed280(0000)
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000000a CR3: 0000000000101000 CR4: 00000000000006e0
Process firefox-bin (pid: 21615, threadinfo 0000010014daa000, task
Stack: ffffffffa0019f6e 0000000000000246 0000010008512040
       0000000080243e77 000003e80000546f 00000000000003e8
       0000000000000000 0000000000000216
Call Trace:<ffffffffa0019f6e>{:unix:unix_stream_sendmsg+670}
       <ffffffff8016b983>{sys_writev+83} <ffffffff801102fa>{system_call

Code: 6b 42 0a 43 6f 6d 6d 69 74 74 65 64 5f 41 53 3a 20 25 38 75
RIP [<ffffffff802c178b>] RSP <0000010014dabbe0>
CR2: 000000000000000a


Does anyone know what is causing the oops?

Many thanks

Andrei Mikhailovsky
Arhont Ltd - Information Security

Web: http://www.arhont.com
Tel: +44 (0)870 4431337
Fax: +44 (0)117 9690141
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