Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755125Ab2HUBPP (ORCPT ); Mon, 20 Aug 2012 21:15:15 -0400 Received: from e38.co.us.ibm.com ([32.97.110.159]:40237 "EHLO e38.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754735Ab2HUBPL (ORCPT ); Mon, 20 Aug 2012 21:15:11 -0400 Message-ID: <5032E114.30503@us.ibm.com> Date: Mon, 20 Aug 2012 18:15:00 -0700 From: John Stultz User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:14.0) Gecko/20120714 Thunderbird/14.0 MIME-Version: 1.0 To: Fengguang Wu CC: LKML , Ingo Molnar , Peter Zijlstra , Richard Cochran , Prarit Bhargava , Thomas Gleixner , linux-fsdevel@vger.kernel.org Subject: Re: BUG: NULL pointer dereference in shmem_evict_inode() References: <20120821010403.GA12018@localhost> <5032E021.2030400@linaro.org> In-Reply-To: <5032E021.2030400@linaro.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12082101-5518-0000-0000-000006FC2AA5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1077 Lines: 31 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/