Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at 00000004; EIP is at acm_probe+0xee/0xce0 [cdc_acm]

[Sanjeev]

Ubuntu 10.10 beta release.

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.33
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: android 1394 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with STAC9752,53 at irq 5'
   Mixer name : 'SigmaTel STAC9752,53'
   Components : 'AC97a:83847652'
   Controls : 38
   Simple ctrls : 24
Date: Sun Oct 10 15:20:52 2010
Failure: oops
Frequency: Once a day.
HibernationDevice: RESUME=UUID=a84a55cb-7069-4309-8b33-479558fad319
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 002: ID 062a:1977 Creative Labs
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Computer Corporation Inspiron 600m
PccardctlIdent:
 Socket 0:
   no product info available
 Socket 1:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
 Socket 1:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=d7b1101e-1949-4df8-abac-ed2df009a4f4 ro quiet splash
RelatedPackageVersions: linux-firmware 1.38
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 00000004
WifiSyslog:

dmi.bios.date: 06/29/2005
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A17
dmi.board.name: 0X8957
dmi.board.vendor: Dell Computer Corporation
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA17:bd06/29/2005:svnDellComputerCorporation:pnInspiron600m:pvr:rvnDellComputerCorporation:rn0X8957:rvr:cvnDellComputerCorporation:ct8:cvr:
dmi.product.name: Inspiron 600m
dmi.sys.vendor: Dell Computer Corporation

[penalvch (penalvch)]

Sanjeev, thank you for reporting this bug and helping make Ubuntu better. 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 <replace-with-bug-number>

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.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]