Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756699AbbFPROw (ORCPT ); Tue, 16 Jun 2015 13:14:52 -0400 Received: from cantor2.suse.de ([195.135.220.15]:35846 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756746AbbFPROp (ORCPT ); Tue, 16 Jun 2015 13:14:45 -0400 Date: Tue, 16 Jun 2015 19:14:43 +0200 From: David Sterba To: Chris Mason Cc: Dave Jones , jbacik@fb.com, Linux Kernel Subject: Re: [4.1-rc7] btrfs related VM_BUG_ON in filemap.c Message-ID: <20150616171443.GS6761@suse.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Chris Mason , Dave Jones , jbacik@fb.com, Linux Kernel References: <20150610134017.GA14803@codemonkey.org.uk> <55787743.4070308@fb.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55787743.4070308@fb.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 921 Lines: 19 On Wed, Jun 10, 2015 at 01:43:31PM -0400, Chris Mason wrote: > On 06/10/2015 09:40 AM, Dave Jones wrote: > > Found this on serial console this morning. The machine had rebooted itself shortly > > afterwards (surprising, given I don't have panic-on-oops or similar set). > > > > We had one other report of this a few months ago. Josef and I read > through all of this and decided it was impossible, so someone else must > be holding on to that page and unlocking it. > > (that someone else could easily be btrfs, just not in this code path) https://patchwork.kernel.org/patch/6478941/ looks like the fix, bug symptoms match the "keywords", I haven't inspected it closely. -- 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/