Kernel panic on reboot after sched_autogroup_enabled disabled
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
I disabled the autogroup scheduler on precise. I added a line to my rc.local to disable it on boot as follows:
echo 0 > /proc/sys/
In linux-image-
I have been unable to store logs of the output but I always see a unable to dereference null pointer. The function reported in the stack trace tends to be update_cfs_shares, update_cfs_load and reweight_entity.
Here are some other details about my Ubuntu version:
lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-27-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
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 0xfbbd8000 irq 58'
Mixer name : 'Realtek ALC888'
Components : 'HDA:10ec0888,
Controls : 43
Simple ctrls : 20
CurrentDmesg:
Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
dmesg: write failed: Broken pipe
Date: Mon Sep 24 10:30:50 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: Supermicro X8SAX
ProcEnviron:
SHELL=/bin/bash
TERM=xterm
PATH=(custom, user)
LANG=en_AU.UTF-8
LANGUAGE=en_AU:en
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 09/17/10
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.0
dmi.board.
dmi.board.name: X8SAX
dmi.board.vendor: Supermicro
dmi.board.version: 2.0
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Supermicro
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: X8SAX
dmi.product.
dmi.sys.vendor: Supermicro
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
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 0xf7fd8000 irq 58'
Mixer name : 'Realtek ALC883'
Components : 'HDA:10ec0883,
Controls : 43
Simple ctrls : 20
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IwConfig:
lo no wireless extensions.
eth1 no wireless extensions.
eth0 no wireless extensions.
MachineType: Supermicro X8SAX
NonfreeKernelMo
Package: linux (not installed)
ProcEnviron:
TERM=xterm
SHELL=/bin/bash
PATH=(custom, no user)
LANG=en_AU.UTF-8
LANGUAGE=en_AU:en
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageV
linux-
linux-
linux-firmware 1.79.1
RfKill:
Tags: precise
Uname: Linux 3.2.0-29-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 11/26/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.0a
dmi.board.
dmi.board.name: X8SAX
dmi.board.vendor: Supermicro
dmi.board.version: 1234567890
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Supermicro
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: X8SAX
dmi.product.
dmi.sys.vendor: Supermicro
visibility: | private → public |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1055222
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.