Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at 00000038; EIP is at sock_sendmsg+0xd6/0x100
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned |
Bug Description
Using wvdial yields a kernel NULL pointer dereference. This is after a hangup event and a subsequent redial attempt by wvdial. The initialization of the link includes using hciconfig, hcitool and rfcomm commands to reset hci0, show, connect and bind /dev/rfcomm0 and hard linking to /dev/rfcomm0 /dev/modem. The rfcomm device is a Palm Treo 650 via Bluetooth serving out Dialup Networking.
This is reproducible.
Also note that the wvdial command will also block and will not die via a kill -9.
Just a guess but strace -f -p of the processes seems to indicate a problem closing the rfcomm link. I think it was something to do with "dlc"...
Attached find a shar archive of the crash report, and requested log files.
Note:
The directions at the Bug submission page:
are difficult to follow, and perhaps due for an update :-(
1. The suggested command "ubuntu-bug -p linux" yields "Warning: The options -p/-P are deprecated, please do not use them. See /usr/bin/ubuntu-bug --help"
2. The alternate submission method asks "include the output of the following commands executed in a terminal as separate attachments in your bug report" and attachment mechanism is buried under "Extra options" and allows only a single file to be attached :-(
Thanks,
Chris Lent
<email address hidden>
ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-
Regression: Yes
Reproducible: Yes
ProcVersionSign
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7db8000 irq 45'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,
Controls : 10
Simple ctrls : 6
Date: Fri Oct 8 16:05:12 2010
Failure: oops
HibernationDevice: RESUME=
InstallationMedia: Ubuntu-
MachineType: ASUSTeK Computer INC. 1005HA
ProcCmdLine: BOOT_IMAGE=
RelatedPackageV
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 00000038
dmi.bios.date: 02/26/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1401
dmi.board.
dmi.board.name: 1005HA
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: 1005HA
dmi.product.
dmi.sys.vendor: ASUSTeK Computer INC.
summary: |
- BUG: unable to handle kernel NULL pointer dereference at 00000038 + BUG: unable to handle kernel NULL pointer dereference at 00000038 - + sock_sendmsg+0xd6/0x100 with wvdial |
tags: | added: acpi |
tags: | added: acpi-parse-exec-fail |
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
tags: | removed: regression-potential |
This seems to be the same bug as reported here: https:/ /bugzilla. kernel. org/show_ bug.cgi? id=15994 They also propose a patch.