From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755056Ab1ATGq7 (ORCPT ); Thu, 20 Jan 2011 01:46:59 -0500 Received: from rcsinet10.oracle.com ([148.87.113.121]:60268 "EHLO rcsinet10.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752833Ab1ATGq5 (ORCPT ); Thu, 20 Jan 2011 01:46:57 -0500 Message-ID: <4D37DAD7.3050100@oracle.com> Date: Thu, 20 Jan 2011 12:18:55 +0530 From: Gurudas Pai User-Agent: Thunderbird 2.0.0.5 (X11/20070719) MIME-Version: 1.0 To: Hugh Dickins CC: Miklos Szeredi , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [BUG] kernel BUG at mm/truncate.c:479! on 2.6.37-rc8 References: <4D1AD935.1020504@oracle.com> <4D1C2E86.9000004@oracle.com> In-Reply-To: <4D1C2E86.9000004@oracle.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Hugh, Gurudas Pai wrote: >>> With 2.6.37-rc8 , run a fio test over nfs, with following jobfile, >>> and we >>> hit kernel bug. >> >> Have you tried the same test on earlier releases? >> I think the bug is old, yet only recently reported. > I tried with 2.6.36.2 , even there it is panicing. > > >> This NFS-triggered kernel BUG at mm/truncate.c:479 sounds very like >> the FUSE-triggered kernel BUG at mm/truncate.c:475 on 2.6.36.1 for >> which Miklos posted a patch on 14 December. Please give his patch >> (below) a try and let us know if it fixes the issue for you - thanks. > Issue fixed with the patch, Thanks :) Is this patch included in mainline ? >> There's another of these page_mapped truncation BUGs outstanding, >> that we suspect has a different cause: yours doesn't sound like that >> one. I can't explain why three people now in the space of one month >> should at last hit these ancient bugs! >> > > > Thanks, > -Guru >