BUG: unable to handle kernel NULL pointer dereference at 000000000000001a

[James Dearing]

This problem only happens when I'm running the Deluge bittorrent client. The 'deluge' process becomes uninterruptible, and sometimes the 'deluged' process becomes a zombie. The system soon stops responding to keyboard input, but my touchpad continues to work. The system appears to hang if I attempt to shut it down, so I have to do a hard reboot.

To reproduce:
-Install Deluge from Ubuntu's repositories
-Attempt to download any torrent with Deluge
-The problem does not happen immediately.

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: james 3978 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:83847616,1028022e,00100201'
   Controls : 29
   Simple ctrls : 19
Date: Mon Oct 19 22:06:05 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=96e02863-7132-49aa-a26f-c1460bee6668
MachineType: Dell Inc. XPS M1530
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-13-generic root=UUID=2e780cf9-c35f-448a-92a3-d17186685f77 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-13.45-generic
RelatedPackageVersions: linux-firmware 1.24
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
Tags: kernel-oops
Title: BUG: unable to handle kernel NULL pointer dereference at 000000000000001a
Uname: Linux 2.6.31-13-generic x86_64
dmi.bios.date: 11/19/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0D501F
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA12:bd11/19/2008:svnDellInc.:pnXPSM1530:pvr:rvnDellInc.:rn0D501F:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: XPS M1530
dmi.sys.vendor: Dell Inc.

[Jeremy Foshee (jeremyfoshee)]

Hi James,

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 456101

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.

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[James Dearing (dearingj)]

I've been running Lucid lately (upgraded from Karmic) and have not seen this bug. Whoever else is/was affected by this bug, can you confirm that it's no longer happening?

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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