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Date: Fri, 25 May 2012 16:30:55 +0800
Message-ID: <CACVXFVNB+=EniGofYV2eMy8m521aNbs4MJETEFEwTK7LMpK6LA@mail.gmail.com>
Subject: Re: 3.4+ tty lockdep trace
From: Ming Lei <tom.leiming@gmail.com>
To: Sasha Levin <levinsasha928@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>, Alan Cox <alan@linux.intel.com>,
        Alan Cox <alan@lxorguk.ukuu.org.uk>, Dave Jones <davej@redhat.com>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On Fri, May 25, 2012 at 4:07 PM, Sasha Levin <levinsasha928@gmail.com> wrote:
> On Fri, May 25, 2012 at 4:32 AM, Steven Rostedt <rostedt@goodmis.org> wrote:
>> On Thu, May 24, 2012 at 03:54:57PM +0100, Alan Cox wrote:
>>> On Thu, 24 May 2012 13:24:56 +0200
>>> Sasha Levin <levinsasha928@gmail.com> wrote:
>>> >
>>> > And here is the second one attached as well, so these are two
>>> > different warnings I get with the new version.
>>>
>>>
>>> I'm somewhat baffled by this one. Can lockdep be fooled by an object
>>> being freed and reallocated at the same address, Is there any markup
>>> that should be present to avoid that ?
>>
>> Sasha,
>>
>> Did you apply Ming's second patch. His first patch (the one referenced
>> in the email) didn't have the unlock fixup.
>
> Nope, I just got the first one.
>
> What's the right patchset to use atm? I know about these patches from
> Ming, and I see Alan sent out two patches yesterday. Which ones should
> I use for testing?

You can try to apply my 2nd patch against Alan's two patches for the tests.


Thanks,
-- 
Ming Lei
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