BUG: unable to handle kernel NULL pointer dereference at 00000140

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the following commands in a terminal window:

    sudo apt-get update
    sudo apt-get upgrade

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging.

 Thank you for your help, we really do appreciate it.

Does this bug happen every time you try to perform an install?

Thank you for taking the time to file a bug report on this issue.

However, given the number of bugs that the Kernel Team receives during any development cycle it is impossible for us to review them all. Therefore, we occasionally resort to using automated bots to request further testing. This is such a request.

We have noted that there is a newer version of the development kernel than the one you last tested when this issue was found. Please test again with the newer kernel and indicate in the bug if this issue still exists or not.

You can update to the latest development kernel by simply running the following commands in a terminal window:

    sudo apt-get update
    sudo apt-get upgrade

If the bug still exists, change the bug status from Incomplete to Confirmed. If the bug no longer exists, change the bug status from Incomplete to Fix Released.

If you want this bot to quit automatically requesting kernel tests, add a tag named: bot-stop-nagging.

 Thank you for your help, we really do appreciate it.

Is this bug preventing folks from installing at all, or do you just get the oops message during the installation?

This bug happened to me too while trying to install Ubuntu 12.04 from a USB flash drive. The screen was black after the crash. This happened once. Another bug with ubiquity crashing was the showstopper.

Occurs every time for me, with final release of 12.04, immediately after I respond to "attempt to unmount" query.
(Query is because I have booted from ISO file so one partition is already mounted.)
This is effectively a show-stopper because OOPS message obscures the screen. Eventually ALT-F7 returns to install.
There is another hazard there since the keyboard apparently still controls install while it's invisible, so trying ENTER
at the OOPS message sets install to work doing the wrong thing.

The failing system contains an empty ext4 partition. If this is changed to ext2 or removed or somewhat filled then
the OOPS does not occur. This should be an adequate work-around since an empty partition isn't precious.

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.6 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. Please only remove that one tag and leave the other tags. 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.

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-rc3-quantal/

kernel-unable-to-test-
upstream

2012/8/28 Joseph Salisbury <email address hidden>

> Would it be possible for you to test the latest upstream kernel? Refer to
> https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
> v3.6 kernel[0] (Not a kernel in the daily directory) and install both the
> linux-image and linux-image-extra .deb packages.
>
> Once you've tested the upstream kernel, please remove the 'needs-
> upstream-testing' tag. Please only remove that one tag and leave the
> other tags. 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.
>
> If this bug is fixed in the mainline kernel, please add the following
> tag 'kernel-fixed-upstream'.
>
> If the mainline kernel does not fix this bug, please add the tag:
> 'kernel-bug-exists-upstream'.
>
> If you are unable to test the mainline kernel, for example it will not
> boot, please add the tag: 'kernel-unable-to-test-upstream'.
> Once testing of the upstream kernel is complete, please mark this bug as
> "Confirmed".
>
>
> Thanks in advance.
>
> [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6-rc3-quantal/
>
> ** Tags removed: kernel-key
>
> ** Tags added: needs-upstream-testing
>
> ** Changed in: linux (Ubuntu)
> Status: Confirmed => Incomplete
>
> --
> You received this bug notification because you are subscribed to a
> duplicate bug report (981528).
> https://bugs.launchpad.net/bugs/951537
>
> Title:
> BUG: unable to handle kernel NULL pointer dereference at 00000140
>
> Status in “linux” package in Ubuntu:
> Incomplete
>
> Bug description:
> Error occured on attempting to install the OS.
>
> ProblemType: KernelOops
> DistroRelease: Ubuntu 12.04
> Package: linux-image-3.2.0-17-generic-pae 3.2.0-17.27
> ProcVersionSignature: Ubuntu 3.2.0-17.27-generic-pae 3.2.6
> Uname: Linux 3.2.0-17-generic-pae 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: 1.93-0ubuntu2
> Architecture: i386
> ArecordDevices:
> **** List of CAPTURE Hardware Devices ****
> card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> AudioDevicesInUse:
> USER PID ACCESS COMMAND
> /dev/snd/controlC0: ubuntu 4317 F.... pulseaudio
> Card0.Amixer.info:
> Card hw:0 'Intel'/'HDA Intel at 0x52400000 irq 43'
> Mixer name : 'Conexant CX20561 (Hermosa)'
> Components : 'HDA:14f15051,103c30d9,00100000'
> Controls : 14
> Simple ctrls : 7
> CasperVersion: 1.305
> Date: Sat Mar 10 13:52:09 2012
> Failure: oops
> LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386
> (20120301)
> MachineType: Hewlett-Packard Compaq Presario C700 Notebook PC
> ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent
> file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz
> quiet splash -- maybe-ubiquity
> PulseSinks: Error: command ['pacmd', 'list-sinks'] failed with exit...

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