BUG: Bad page map in process threaded-ml pte:fffe0002fffe46c5 pmd:bf681067

[Miia Sample]

I sent a message on Empathy, to a contact, suddenly the X session vanished into a TTY with a what looked like a stack trace - but I could still hear the sounds in the session. I cycled through the TTY's and promptly found X doing fine in TTY7, with Empathy complaining that it doesn't respond.

ProblemType: KernelOops
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-22-generic 3.2.0-22.35
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Sun Apr 8 12:05:52 2012
Failure: oops
HibernationDevice: RESUME=UUID=2dba7b9c-fb4a-499b-9f8f-0fd1d8b60555
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
MachineType: Dell Inc. Latitude D630
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-22-generic root=UUID=2eac8803-efce-4add-b216-7e718b82e62e ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-1ubuntu18
SourcePackage: linux
Title: BUG: Bad page map in process threaded-ml pte:fffe0002fffe46c5 pmd:bf681067
UpgradeStatus: Upgraded to precise on 2012-03-31 (7 days ago)
dmi.bios.date: 07/23/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0KU184
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd07/23/2007:svnDellInc.:pnLatitudeD630:pvr:rvnDellInc.:rn0KU184:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D630
dmi.sys.vendor: Dell Inc.

[penalvch (penalvch)]

Miia Ranta, thank you for reporting this bug and helping make Ubuntu better. If you could also please 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.