From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx113.postini.com [74.125.245.113]) by kanga.kvack.org (Postfix) with SMTP id 9D4C96B0068 for ; Sat, 17 Nov 2012 16:54:55 -0500 (EST) Date: Sat, 17 Nov 2012 19:54:35 -0200 From: Rafael Aquini Subject: Re: [PATCH v12 4/7] mm: introduce compaction and migration for ballooned pages Message-ID: <20121117215434.GA23879@x61.redhat.com> References: <6602296b38c073a5c6faa13ddbc74ceb1eceb2dd.1352656285.git.aquini@redhat.com> <50A7D0FA.2080709@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <50A7D0FA.2080709@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Sasha Levin Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Andrew Morton , Mel Gorman , "Michael S. Tsirkin" , Minchan Kim , Rik van Riel , Rusty Russell On Sat, Nov 17, 2012 at 01:01:30PM -0500, Sasha Levin wrote: > > I'm getting the following while fuzzing using trinity inside a KVM tools guest, > on latest -next: > > [ 1642.783728] BUG: unable to handle kernel NULL pointer dereference at 0000000000000194 > [ 1642.785083] IP: [] isolate_migratepages_range+0x344/0x7b0 > > My guess is that we see those because of a race during the check in > isolate_migratepages_range(). > > > Thanks, > Sasha Sasha, could you share your .config and steps you did used with trinity? So I can attempt to reproduce this issue you reported. Thanks, Rafael -- 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