Bug is stale/abandoned. Closing
** Changed in: linux (Ubuntu)
Status: Confirmed => Won't Fix
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https://bugs.launchpad.net/bugs/1422016
Title:
Kernel panic during system boot with sched_autogroup_enabled = 0
Status in linux package in Ubuntu:
Won't Fix
Bug description:
# 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.
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