Comment 0 for bug 1439849

I hit this bug when logging in to an encrypted home account when booting with systemd. I can't reproduce it in a VM. Booting with upstart works fine. I was booting with systemd fine so this may be due to a change in the 219-6ubuntu1 systemd update.

ProblemType: KernelOops
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-11-generic 3.19.0-11.11
ProcVersionSignature: Ubuntu 3.19.0-11.11-generic 3.19.3
Uname: Linux 3.19.0-11-generic x86_64
Annotation: Your system might become unstablenow and might need to be restarted.
ApportVersion: 2.17-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: tyhicks 3786 F.... pulseaudio
Date: Thu Apr 2 14:19:21 2015
DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at location RIP: 0010:location location propagate_one+0xc7/0x1e0
Failure: oops
InstallationDate: Installed on 2011-08-23 (1318 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
MachineType: LENOVO 4286CTO
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-11-generic root=UUID=bd144b12-0d78-4d1e-b69c-8d83ee663c8f ro quiet splash kaslr crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7 init=/sbin/upstart
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+git20090217-3ubuntu8
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
UpgradeStatus: Upgraded to vivid on 2015-02-27 (34 days ago)
dmi.bios.date: 04/11/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 8DET68WW (1.38 )
dmi.board.asset.tag: Not Available
dmi.board.name: 4286CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr8DET68WW(1.38):bd04/11/2013:svnLENOVO:pn4286CTO:pvrThinkPadX220:rvnLENOVO:rn4286CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 4286CTO
dmi.product.version: ThinkPad X220
dmi.sys.vendor: LENOVO