From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f48.google.com (mail-pb0-f48.google.com [209.85.160.48]) by kanga.kvack.org (Postfix) with ESMTP id 1F0456B00D9 for ; Sun, 27 Oct 2013 09:16:56 -0400 (EDT) Received: by mail-pb0-f48.google.com with SMTP id mc17so453037pbc.21 for ; Sun, 27 Oct 2013 06:16:55 -0700 (PDT) Received: from psmtp.com ([74.125.245.125]) by mx.google.com with SMTP id yj4si10396031pac.166.2013.10.27.06.16.54 for ; Sun, 27 Oct 2013 06:16:55 -0700 (PDT) Received: by mail-ve0-f182.google.com with SMTP id c14so2758513vea.13 for ; Sun, 27 Oct 2013 06:16:53 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <20131027125036.GJ17447@blackmetal.musicnaut.iki.fi> References: <20131024200730.GB17447@blackmetal.musicnaut.iki.fi> <20131026143617.GA14034@mudshark.cambridge.arm.com> <20131027195115.208f40f3@tom-ThinkPad-T410> <20131027125036.GJ17447@blackmetal.musicnaut.iki.fi> Date: Sun, 27 Oct 2013 21:16:53 +0800 Message-ID: Subject: Re: ARM/kirkwood: v3.12-rc6: kernel BUG at mm/util.c:390! From: Ming Lei Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org List-ID: To: Aaro Koskinen Cc: Will Deacon , Russell King - ARM Linux , Simon Baatz , Catalin Marinas , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , "linux-arm-kernel@lists.infradead.org" , Andrew Morton , FUJITA Tomonori , Tejun Heo , "James E.J. Bottomley" , Jens Axboe On Sun, Oct 27, 2013 at 8:50 PM, Aaro Koskinen wrote: > > On ARM v3.9 or older kernels do not trigger this BUG, at seems it only > started to appear with the following commit (bisected): > > commit 1bc39742aab09248169ef9d3727c9def3528b3f3 > Author: Simon Baatz > Date: Mon Jun 10 21:10:12 2013 +0100 > > ARM: 7755/1: handle user space mapped pages in flush_kernel_dcache_page The above commit only starts to implement the helper on ARM, but according to Documentation/cachetlb.txt, looks caller of flush_kernel_dcache_page() should make sure the passed 'page' is a user space page. Thanks, -- Ming Lei -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org