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[Launchpad Bug Tracker <1422016@xxxxxxxxxxxxxxxxxx>]

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# lsb_release -rd
Description:	Ubuntu 14.04.1 LTS
Release:	14.04

# uname -a
Linux napa 3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

A kernel panic occurs while disabling the automatic task group creation
within /etc/sysctl.conf using "kernel.sched_autogroup_enabled = 0".

After adding the "noautogroup" kernel parameter to GRUB, the system will
boot without issue.

I have attached a screen shot of the stack trace as I was unable to
capture the stack trace using netconsole, linux-crashdump, and
/var/log/kern.log. Oddly enough, while trying one last approach (serial
console) to capture the full trace within virtual box using a host pipe
and setting console=ttyS0, the system booted without issue and disabled
automatic task group creation.

According to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1055222, a fix for
the issue has hit the Precise kernel and should be released in 3.2.0-36.

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


** Tags: bot-comment
-- 
Kernel panic during system boot with sched_autogroup_enabled = 0
https://bugs.launchpad.net/bugs/1422016
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