sudden reboot

[Tim Froidcoeur]

Description:

The computer will suddenly and abruptly reboot.

How to reproduce:
I can currently reproduce this as follows:

1) sudo killall -9 mountall [reason: mountall eats 100 % of a cpu core after boot - can't mount my nfs share in etc/fstab]
2) open the network connections dialog box from NetworkManager applet
3) select wired eth0, change ipv4 settings from automatic to manual, configure ip 10.0.0.203 and netmask 255.255.255.0

After typing the first character or so of the netmask, the machine will reboot.
Reproducibility is 100% [I tried about 10 times now]. If I do not kill mountall, it will not happen [tried that a few times too].

Additional notes:
* This happens on both 2.6.32-22.33 and 2.6.34-999 [from https://wiki.ubuntu.com/KernelTeam/MainlineBuilds].
* if I tail -f /var/log/kern.log, I see two lines appear that are missing after the reboot:
   md: stopping all md devices
   and something about sda: synchronizing [not sure about that line]
* kern.log sometimes contains something that looks like a stacktrace. It does not happen all the time and does not seem related to the crash
* I had linux-crashdump installed, but no /var/crash/linux-image* files [there is a fglrx.crash though]
* it always happens on modifying that netmask field. Not when modifying the ip address.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: fraco 1597 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0600000 irq 22'
   Mixer name : 'Realtek ALC272'
   Components : 'HDA:10ec0272,1025033e,00100001 HDA:11c11040,11c10001,00100200'
   Controls : 28
   Simple ctrls : 16
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xcfedc000 irq 17'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [off]
Date: Sun May 2 23:43:06 2010
HibernationDevice: RESUME=UUID=9973b542-ea6e-4636-9c66-3c40ed86afaf
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
MachineType: Acer Aspire 5740
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=457c71ab-c0a9-4734-abaa-b3a3ffa2b7a0 ro crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: yes
SourcePackage: linux
dmi.bios.date: 11/26/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V1.09
dmi.board.name: Aspire 5740
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: Rev
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.09:bd11/26/2009:svnAcer:pnAspire5740:pvrRev:rvnAcer:rnAspire5740:rvrRev:cvnAcer:ct10:cvrRev:
dmi.product.name: Aspire 5740
dmi.product.version: Rev
dmi.sys.vendor: Acer

[Tim Froidcoeur (fraco)]

Killing mountall on a tty instead of on a graphical terminal shows me this:

    General error mounting filesystems.
    A maintenance shell will now be started.
    CONTROL-D will terminate this shell and reboot the system.

Especially the "reboot the system part".

[Jeremy Foshee (jeremyfoshee)]

Hi Tim,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. 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. Please let us know your results.

Thanks in advance.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Tim Froidcoeur (fraco)]

Same result with linux-image-2.6.34-999-generic_2.6.34-999.201005041005_amd64.deb

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu development release http://cdimage.ubuntu.com/daily-live/current/ . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]