From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Stultz <johnstul@us.ibm.com>
Subject: Re: BUG: NULL pointer dereference in shmem_evict_inode()
Date: Mon, 20 Aug 2012 18:15:00 -0700
Message-ID: <5032E114.30503@us.ibm.com>
References: <20120821010403.GA12018@localhost> <5032E021.2030400@linaro.org>
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Cc: LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Richard Cochran <richardcochran@gmail.com>,
	Prarit Bhargava <prarit@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-fsdevel@vger.kernel.org
To: Fengguang Wu <fengguang.wu@intel.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <5032E021.2030400@linaro.org>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

On 08/20/2012 06:10 PM, John Stultz wrote:
> On 08/20/2012 06:04 PM, Fengguang Wu wrote:
>> Hi John,
>>
>> The below oops happens in v3.5..v3.6-rc2 and it's bisected down to 
>> commit
>> 2a8c0883c ("time: Move xtime_nsec adjustment underflow handling 
>> timekeeping_adjust").
>>
>> However linux-next is working fine. Do you have any fixes not yet 
>> sent to Linus?
> Yea, there's a fix pending in tip/timers/urgent 
> (4e8b14526ca7fb046a81c94002c1c43b6fdf0e9b) to catch crazy values from 
> settimeofday or the cmos clock that might overflow a ktime_t.
>
> Out of curiosity, how are you triggering/reproducing this?
>

Looking at the commit you pointed out, it seems more likely Ingo's fix 
(1d17d17484d40f2d5b35c79518597a2b25296996) might be related, but that 
should have landed in v3.6-rc2.  So I'm not sure.

thanks
-john