From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753011AbaCCCB4 (ORCPT ); Sun, 2 Mar 2014 21:01:56 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:17668 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751625AbaCCCBx (ORCPT ); Sun, 2 Mar 2014 21:01:53 -0500 Message-ID: <5313E28B.5030902@oracle.com> Date: Sun, 02 Mar 2014 21:01:47 -0500 From: Sasha Levin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: Linus Torvalds CC: Al Viro , linux-fsdevel , LKML Subject: Re: fs: gpf in simple_setattr References: <52B23CEA.7090405@oracle.com> <52CD762B.7020600@oracle.com> <53123D81.6080003@oracle.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/01/2014 10:35 PM, Linus Torvalds wrote: > On Sat, Mar 1, 2014 at 2:05 PM, Sasha Levin wrote: >> ping again? >> >> I've been working on it, but don't see an obvious issue. >> >> It does look like an access to invalid memory easily doable from userspace, >> so it should probably get fixed soon... > > It doesn't happen in mainline? Any possibility that you could try to bisect it? It might be in mainline, it just happens once in a couple of days and since I'm not usually fuzzing mainline I can't say for sure. I've tried bisecting but since I don't have a reliable way to reproduce it the bisection goes wrong pretty fast. I've tried adding some debug code in, which clearly suggests that the object is gone, but I can't pinpoint to where it disappears. Thanks, Sasha