Bug 20032 - 2.6.36-rc7 continuos kernel panics in cpu_idle (and intel_idle)
Summary: 2.6.36-rc7 continuos kernel panics in cpu_idle (and intel_idle)
Status: CLOSED UNREPRODUCIBLE
Alias: None
Product: Power Management
Classification: Unclassified
Component: cpuidle (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: power-management_cpuidle@kernel-bugs.osdl.org
URL:
Keywords:
Depends on:
Blocks: 16444
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Reported: 2010-10-10 17:54 UTC by Maciej Rutecki
Modified: 2010-10-24 04:11 UTC (History)
4 users (show)

See Also:
Kernel Version: 2.6.36-rc7
Subsystem:
Regression: Yes
Bisected commit-id:

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Description Maciej Rutecki 2010-10-10 17:54:36 UTC 
Subject    : 2.6.36-rc7 continuos kernel panics due to of cpu_idle (and cpu_intel_idle)
Submitter  : Patrizio Bassi <patrizio.bassi@gmail.com>
Date       : 2010-10-08 18:23
Message-ID : AANLkTi=2irM5tM2rNC5wHVV=Nw4cs_CK59pvXDD+Y5Dz@mail.gmail.com
References : http://marc.info/?l=linux-kernel&m=128656222919323&w=2

This entry is being used for tracking a regression from 2.6.35.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Len Brown 2010-10-19 03:46:24 UTC 
Do the issues go away when you boot with "idle=poll"?
Comment 2 Patrizio Bassi 2010-10-19 08:11:11 UTC 
After bumping to -rc8 with cpu_idle but without cpu_idle_intel compiled i can't reproduce the issue anymore.
It's really strange because i could not see any commit related to a similar issue.

I'll wait 2.6.36 vanilla to be out to test again with the intel module too.
Comment 3 Len Brown 2010-10-20 16:34:58 UTC 
please re-open if you can reproduce this with 2.6.36-rc8 or later
Comment 4 Patrizio Bassi 2010-10-22 08:57:45 UTC 
i confirm 2.6.36 final with 
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_ARCH_HAS_DEFAULT_IDLE=y
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_INTEL_IDLE=y

looks stable now.

i will reopen if any issues happen
Comment 5 Len Brown 2010-10-24 04:11:41 UTC 
Thanks for confirming 2.6.36 is working, Patrizio.
Please let us know if you see any troubles with the release,
no matter the .config
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