Re: 2.6.33: ftrace triggers soft lockup
From: AmÃrico Wang
Date: Fri Mar 05 2010 - 02:16:14 EST
On Fri, Mar 5, 2010 at 12:14 PM, AmÃrico Wang <xiyou.wangcong@xxxxxxxxx> wrote:
> On Thu, Mar 4, 2010 at 9:54 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
>> On Wed, 2010-03-03 at 14:04 +0800, AmÃrico Wang wrote:
>>> I am not sure if this is ftrace's fault, but it is ftrace who triggers
>>> the soft lockup. On my machine, it is pretty easy, just run:
>>> echo function_graph > current_tracer
>>> I found this when 2.6.33-rc7, but forgot to report here. I just tried
>>> Linus tree, it still has this problem.
>> So this is not present in 2.6.33-rc6? If you know approximately when it
>> appeared, would you be able to do a git bisect on it?
> I can't say that because I didn't try -rc6.
Sigh, 2.6.33-rc6 doesn't work, even 2.6.32 doesn't work...
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