I had this problem repeatedly even after this ticked was closed. So I
switched to Debian wheezy and never had the problem again.

Regards,
Fede

On Fri, Dec 18, 2015 at 2:40 AM, Christopher M. Penalver
<christopher.m.penal...@gmail.com> wrote:
> Federico Ceratto, as this report is closed, it has nothing to do with
> your problem.
>
> However, it will help immensely if you filed a new report via a terminal:
> ubuntu-bug linux
>
> Please feel free to subscribe me to it.
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (1017874).
> https://bugs.launchpad.net/bugs/922906
>
> Title:
>   Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at
>   0000009c; EIP is at __ticket_spin_lock+0x8/0x30
>
> Status in Linux:
>   Fix Released
> Status in linux package in Ubuntu:
>   Fix Released
> Status in linux source package in Precise:
>   Fix Released
> Status in linux source package in Quantal:
>   Fix Released
> Status in linux source package in Raring:
>   Fix Released
>
> Bug description:
>   This happened after unplugging a usb storage device.
>
>   ProblemType: KernelOops
>   DistroRelease: Ubuntu 12.04
>   Package: linux-image-3.2.0-11-generic 3.2.0-11.19
>   ProcVersionSignature: Ubuntu 3.2.0-11.19-generic 3.2.1
>   Uname: Linux 3.2.0-11-generic i686
>   AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
>   Annotation: Your system might become unstable now and might need to be 
> restarted.
>   ApportVersion: 1.91-0ubuntu1
>   Architecture: i386
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  elroy      1504 F.... pulseaudio
>   Card0.Amixer.info:
>    Card hw:0 'I82801DBICH4'/'Intel 82801DB-ICH4 with AD1981A at irq 17'
>      Mixer name : 'Analog Devices AD1981A'
>      Components : 'AC97a:41445372'
>      Controls      : 25
>      Simple ctrls  : 17
>   Date: Fri Jan 27 19:32:16 2012
>   Failure: oops
>   HibernationDevice: RESUME=UUID=a818f95b-caf9-4a82-bd11-2e3480e5595a
>   InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
>   Lsusb:
>    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
>    Bus 002 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 003 Device 002: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-11-generic 
> root=UUID=481773af-0b0e-47ef-8864-302bf969002c ro quiet splash vt.handoff=7
>   PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit code 1: 
> No PulseAudio daemon running, or not running as session daemon.
>   PulseSources: Error: command ['pacmd', 'list-sources'] failed with exit 
> code 1: No PulseAudio daemon running, or not running as session daemon.
>   RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-1ubuntu18
>   RfKill:
>    0: phy0: Wireless LAN
>     Soft blocked: no
>     Hard blocked: no
>   SourcePackage: linux
>   Title: BUG: unable to handle kernel NULL pointer dereference at 0000009c
>   UpgradeStatus: Upgraded to precise on 2012-01-27 (0 days ago)
>   dmi.bios.date: 05/28/2003
>   dmi.bios.vendor: Compaq
>   dmi.bios.version: 686O2 v2.21
>   dmi.board.name: 07E4h
>   dmi.board.vendor: Compaq
>   dmi.chassis.type: 15
>   dmi.chassis.vendor: Compaq
>   dmi.modalias: 
> dmi:bvnCompaq:bvr686O2v2.21:bd05/28/2003:svnCompaq:pn:pvr:rvnCompaq:rn07E4h:rvr:cvnCompaq:ct15:cvr:
>   dmi.sys.vendor: Compaq
>
>   --
>
>   SRU Justification:
>
>   Impact:
>   When plugging and unplugging a USB drive occasionally a race condition in 
> the notify subsystem causes a kernel oops.
>
>   Fix:
>   A set up of patches 
> 0520bffba9685d88ad68ede4a41abd08a3e9684e..fe9b25d3ee6bdf6f9c9a9ce61d9d3e144bac13ef
>  found in the for-next branch in the notify.git tree solve this issue:
>   
> http://git.infradead.org/users/eparis/notify.git/shortlog/refs/heads/for-next
>   These have been cherry-picked and tested on precise/quantal and applied 
> already to raring. Only small modifications are needed for 2 of the patches 
> because the locations of the functions had changed other than that the other 
> 7 patches are clean cherry-picks.
>
>   Testcase:
>   Comment #8 and #9 in the upstream bug: 
> https://bugzilla.kernel.org/show_bug.cgi?id=22602 has a test case that easily 
> reproduces this issue within 15-30 minutes. I have applied the above fixes 
> and was able to run this test case overnight in all cases.
>   In addition I've tested using the LTP tests for inotfy and these run 
> properly with the fix applied.
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/linux/+bug/922906/+subscriptions

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/922906

Title:
  Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at
  0000009c; EIP is at __ticket_spin_lock+0x8/0x30

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/922906/+subscriptions

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