BUG: scheduling while atomic: swapper/0/0x10010000

[saudou-basile]

my gnome toolbar on ubuntu9.10 told me that there is an "unexpected software stop".

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: valerie 1897 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfebfc000 irq 21'
   Mixer name : 'SigmaTel STAC9205'
   Components : 'HDA:838476a0,10280229,00100204 HDA:14f12c06,14f1000f,00100000'
   Controls : 18
   Simple ctrls : 12
Date: Tue Nov 3 17:41:32 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=1c079882-627a-4ceb-bd55-e1c9599e0bad
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: Dell Inc. Vostro 1700
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: root=UUID=769b365a-c41f-4096-b90f-a71721c6798b ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
SourcePackage: linux
Tags: kernel-oops
Title: BUG: scheduling while atomic: swapper/0/0x10010000
Uname: Linux 2.6.31-14-generic i686
WpaSupplicantLog:

dmi.bios.date: 11/05/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0HX767
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd11/05/2007:svnDellInc.:pnVostro1700:pvr:rvnDellInc.:rn0HX767:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Vostro 1700
dmi.sys.vendor: Dell Inc.