linux-kernel - Re: BUG from text_poke() during CPU offlining

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Message-ID: <49DD073E.4050804@redhat.com>
Date:	Wed, 08 Apr 2009 13:21:18 -0700
From:	Masami Hiramatsu <mhiramat@...hat.com>
To:	Gary Hade <garyhade@...ibm.com>
CC:	mingo@...e.hu, mingo@...hat.com, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: BUG from text_poke() during CPU offlining

Hi Gary,

Gary Hade wrote:
> I ran into the below BUG with 32-bit 2.6.30-rc1 while offlining
> all of the offlineable CPUs.  It happened when the last offlineable
> CPUs was being offlined.  The problem disappeared after I reverted
> the following two patches.
>  - x86: implement atomic text_poke() via fixmap
>    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=78ff7fae04554b49d29226ed12536268c2500d1f
>  - x86: expand irq-off region in text_poke()
>    http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=7cf49427042400d40bdc80b5c3399b6b5945afa8

Hmm, this bug seems that the same bug I reported recently.

http://lkml.org/lkml/2009/4/4/71

I'm working on that.

Thank you for reporting!


> 
> Gary
> 

-- 
Masami Hiramatsu

Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division

e-mail: mhiramat@...hat.com

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