crash appears when executing sudo sysctl -p

[yas]

after tuning ipv4 for setting broadband tweaking parameters
with a new user different than "ubuntu"
runing from usb pendrive persistent (created from the live cd)
wireless network icon disapears
download speed reduced to 1Mbit

# adsl speed tweak 10Mbit
net.core.rmem_default = 511104
net.core.rmem_max = 1022208
net.core.wmem_default = 511104
net.core.wmem_max = 1022208
net.ipv4.tcp_wmem = 4096 127776 511104
net.ipv4.tcp_rmem = 4096 127776 1022208
net.ipv4.tcp_mem = 1022208 1022208 1022208
net.ipv4.tcp_rfc1337 = 1
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_ecn = 0
net.ipv4.route.flush = 1

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: yas 5401 F.... pulseaudio
                      gdm 5968 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6ffc000 irq 21'
   Mixer name : 'SigmaTel STAC9228'
   Components : 'HDA:83847616,10280209,00100402'
   Controls : 29
   Simple ctrls : 19
Date: Sun Oct 25 14:02:25 2009
DistroRelease: Ubuntu 9.10
Failure: oops
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091020.3)
MachineType: Dell Inc. XPS M1330
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/casper/vmlinuz noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz 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
dmi.bios.date: 12/26/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A15
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA15:bd12/26/2008:svnDellInc.:pnXPSM1330:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1330
dmi.sys.vendor: Dell Inc.

[Jeremy Foshee (jeremyfoshee)]

Hi yas,

This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 460416

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[yas (sayazyi)]

SOLVED running kernel Linux 2.6.31-20