[Bug 597497] [NEW] handle kernel NULL pointer dereference at 0000000000000007

[C de-Avillez]

Public bug reported:

When I boot either the mainstream kernel 2.6.35-020635rc3-generic, or
the current Maverick kernel (2.6.35-5-generic) the boot goes OK until
the various fsck's are fired. From this point on I get so many kernel
OOPSes that it is impossible to take a snapshot; system also becomes
unresponsive, even to the magic keys, and I have to power-cycle it.
*Maybe* these OOPSes attached here are related -- I do not know (I was
able to boot into the 2.6.35-5 kernel in recovery mode, but started
getting the OOPSes -- four of them -- when I logged in, still in the
command-line; after a while the system become unresponsive again, and I
had to power-cycle).

When I boot 2.6.35-4-generic I see no errors.

It is worth noting that I was able to boot the same above-mentioned
mainstream kernel until I installed 2.6.35-5.

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-5-generic 2.6.35-5.6
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-4.5-generic 2.6.35-rc3
Uname: Linux 2.6.35-4-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  cerdea     2683 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfebfc000 irq 16'
   Mixer name	: 'SigmaTel STAC9205'
   Components	: 'HDA:838476a0,102801fd,00100204 HDA:14f12c06,14f1000f,00100000'
   Controls      : 18
   Simple ctrls  : 11
Date: Tue Jun 22 19:11:57 2010
Failure: oops
HibernationDevice: RESUME=UUID=fd9368c7-8f88-401c-b886-986f45f5f6d7
InstallationMedia: Ubuntu-Server 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
MachineType: Dell Inc. Inspiron 1721
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-4-generic root=/dev/mapper/hostname-root ro crashkernel=384M-2G:64M,2G-:128M
RelatedPackageVersions: linux-firmware 1.37
SourcePackage: linux
Title: handle kernel NULL pointer dereference at 0000000000000007
dmi.bios.date: 04/21/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0RT951
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd04/21/2008:svnDellInc.:pnInspiron1721:pvr:rvnDellInc.:rn0RT951:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1721
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-kerneloops kernel-oops maverick needs-upstream-testing regression-potential

-- 
handle kernel NULL pointer dereference at 0000000000000007
https://bugs.launchpad.net/bugs/597497
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