linux-kernel - Re: 2.6.33: ftrace triggers soft lockup

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Message-ID: <4B95AE4E.6060700@cn.fujitsu.com>
Date:	Tue, 09 Mar 2010 10:11:26 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	rostedt@...dmis.org
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	Américo Wang 
	<xiyou.wangcong@...il.com>, LKML <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: 2.6.33: ftrace triggers soft lockup

Steven Rostedt wrote:
> On Mon, 2010-03-08 at 15:32 +0800, Li Zefan wrote:
> 
>>> And Li seems to see the same thing.
>> Yes, and more than this. I can see segmentation fault while testing,
>> both my testing threads and kernel building threads that are running
>> at the same time can get segfault.
> 
> Segfaults??
> 

Yes.

> This sounds like the compiler may have screwed up again. Can you compile
> with this patch and see if it catches anything?
> 

But I was using a x86_64 machine, and this patch won't do anything on
x86_64?


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