When unloading the ipw2200 module, then reloading it with option rtap_iface=1, and activating rtap with ifconfig rtap0 up, NetworkManager tries to reconnect to the wireless router. The kernel panics.
Walkthrough :
- modprobe -r ipw2200
- modprobe ipw2200 rtap_iface=1
- ifconfig rtap0 up
- wait
- Oops ...
The PC is an alienware Aurora m9700, the ipw card is an Intel PW ABG 2915, and the router a Livebox pro (Inventel DWB-200)
Connexion is made via WPA-PSK/TKIP
Security concern as it could lead to a DoS via voluntary kernel crash.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-generic 2.6.32-25.44
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-25.44-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: kegeruneku 1635 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
Card hw:0 'CK804'/'NVidia CK804 with AD1986 at irq 22'
Mixer name : 'Analog Devices AD1986'
Components : 'AC97a:41445378'
Controls : 50
Simple ctrls : 35
Date: Sat Oct 9 16:10:03 2010
HibernationDevice: RESUME=UUID=19f68b00-030d-4ca9-a819-31a2133806e1
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
Lsusb:
Bus 002 Device 004: ID 046d:c01f Logitech, Inc.
Bus 002 Device 003: ID 0603:00f2 Novatek Microelectronics Corp.
Bus 002 Device 002: ID 0a5c:2101 Broadcom Corp. Bluetooth Controller
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: alienware Aurora m9700
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.32-25-generic root=UUID=d4eaf12a-ea01-4e41-ae75-383be32b720d ro
ProcEnviron:
PATH=(custom, user)
LANG=fr_FR.utf8
SHELL=/bin/zsh
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
dmi.bios.date: 01/25/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: W830D318
dmi.board.asset.tag: W830DA AB040
dmi.board.name: Aurora m9700
dmi.board.vendor: alienware
dmi.board.version: AB040
dmi.chassis.asset.tag: W830DA AB040
dmi.chassis.type: 10
dmi.chassis.vendor: alienware
dmi.chassis.version: AB040
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrW830D318:bd01/25/2007:svnalienware:pnAuroram9700:pvrAB040:rvnalienware:rnAuroram9700:rvrAB040:cvnalienware:ct10:cvrAB040:
dmi.product.name: Aurora m9700
dmi.product.version: AB040
dmi.sys.vendor: alienware
This happened to me on 10.10 (kernel Linux becks 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:36:48 UTC 2010 i686 GNU/Linux). The steps to reproduce are the following:
- rmmod ipw2200
- modprobe ipw2200 rtap_iface=1
- ifconfig rtap0 up
At this point everything seems to work like it should (you can even start wireshark to catch packets on rtap0), but a kernel panic occurs as soon as you try to use the real interface (i.e.: ping google.com).
I have been able to catch the oops log through netconsole.