BUG: scheduling while atomic: swapper/0/0x10010000; RIP: 0010:[<ffffffff8130fbbe>] [<ffffffff8130fbbe>] acpi_idle_enter_simple+0x117/0x14b

When using the Vodafone K3760 USB Stick (manufacured by Option) to set up an Internet connection via ppp and when the Appilcation port (ttyHS1) is used to get the signal strength a "BUG: scheduling while atomic" is being issued on the console.

When in X-Windows the machine freezes totally. When on the text console sometimes the machine stays accessible.

The issue seems to be triggered when we close the ttyHSx port in our application. When the application calls close() the log shows:

...
Aug 17 18:17:14 chris-desktop-ub-10 kernel: [ 327.900232] usb 1-7: hso received invalid serial state notification
Aug 17 18:18:39 chris-desktop-ub-10 kernel: [ 413.078165] BUG: scheduling while atomic: swapper/0/0x10010000
Aug 17 18:18:39 chris-desktop-ub-10 kernel: [ 413.081277] Modules linked in: ppp_async crc_ccitt usb_storage hso ...
...

I was able to capture a trace as well as a list of current tasks (both attached).

Please let me know if you need more information/traces.

many thanks
Chris

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic 2.6.32-24.39
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-24.39-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: NVidia [HDA NVidia], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: NVidia [HDA NVidia], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: chris 1331 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfe200000 irq 19'
   Mixer name : 'Realtek ALC262'
   Components : 'HDA:10ec0262,1734112c,00100202'
   Controls : 21
   Simple ctrls : 13
Date: Tue Aug 17 18:42:44 2010
HibernationDevice: RESUME=UUID=dcee5c6c-d0a3-4712-a804-f6823aac8f6c
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 hso0 no wireless extensions.
MachineType: FUJITSU SIEMENS ESPRIMO EDITION P2530
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=6f37aa8d-98d3-4226-90cb-55ad5bf1b857 ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
 0: hso-7: Wireless WAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
dmi.bios.date: 01/12/2009
dmi.bios.vendor: FUJITSU SIEMENS // Phoenix Technologies Ltd.
dmi.bios.version: 6.00 R1.06.2740.A2
dmi.board.name: D2740-A2
dmi.board.vendor: FUJITSU SIEMENS
dmi.board.version: S26361-D2740-A2
dmi.chassis.type: 6
dmi.chassis.vendor: FUJITSU SIEMENS
dmi.modalias: dmi:bvnFUJITSUSIEMENS//PhoenixTechnologiesLtd.:bvr6.00R1.06.2740.A2:bd01/12/2009:svnFUJITSUSIEMENS:pnESPRIMOEDITIONP2530:pvr:rvnFUJITSUSIEMENS:rnD2740-A2:rvrS26361-D2740-A2:cvnFUJITSUSIEMENS:ct6:cvr:
dmi.product.name: ESPRIMO EDITION P2530
dmi.sys.vendor: FUJITSU SIEMENS