WARNING: at /build/buildd/linux-2.6.31/net/sched/sch_generic.c:246 dev_watchdog+0x1f6/0x210() when adding/removing usb net device

This has happened several times when adding/removing a usb network device (rndis and usb cdc_ether both).

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: darkstar62 18691 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf7400000 irq 22'
   Mixer name : 'Realtek ALC272'
   Components : 'HDA:10de0006,10de0101,00100000 HDA:10ec0272,17aa3872,00100001'
   Controls : 26
   Simple ctrls : 14
Date: Tue Oct 27 19:10:13 2009
DistroRelease: Ubuntu 9.10
Failure: oops
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
MachineType: LENOVO 4186
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic-pae 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic-pae root=UUID=8942dc05-2b12-40d0-95a9-df697502920e ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic-pae
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic-pae N/A
 linux-firmware 1.24
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/net/sched/sch_generic.c:246 dev_watchdog+0x1f6/0x210()
Uname: Linux 2.6.31-14-generic-pae i686
dmi.bios.date: 07/17/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 15CN28WW(V2.01)
dmi.board.name: KIWB1
dmi.board.vendor: LENOVO
dmi.board.version: REFERENCE
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnLENOVO:bvr15CN28WW(V2.01):bd07/17/2009:svnLENOVO:pn4186:pvrLenovoIdeaPadY550:rvnLENOVO:rnKIWB1:rvrREFERENCE:cvnNoEnclosure:ct10:cvrN/A:
dmi.product.name: 4186
dmi.product.version: Lenovo IdeaPad Y550
dmi.sys.vendor: LENOVO