Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933499AbcJZQa3 (ORCPT ); Wed, 26 Oct 2016 12:30:29 -0400 Received: from arcturus.aphlor.org ([188.246.204.175]:37752 "EHLO arcturus.aphlor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933180AbcJZQa1 (ORCPT ); Wed, 26 Oct 2016 12:30:27 -0400 Date: Wed, 26 Oct 2016 12:30:18 -0400 From: Dave Jones To: Linus Torvalds Cc: Chris Mason , Andy Lutomirski , Andy Lutomirski , Jens Axboe , Al Viro , Josef Bacik , David Sterba , linux-btrfs , Linux Kernel , Dave Chinner Subject: Re: bio linked list corruption. Message-ID: <20161026163018.wx57yy554576s6e2@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Linus Torvalds , Chris Mason , Andy Lutomirski , Andy Lutomirski , Jens Axboe , Al Viro , Josef Bacik , David Sterba , linux-btrfs , Linux Kernel , Dave Chinner References: <20161020230341.jsxpia2sy53xn5l5@codemonkey.org.uk> <20161021200245.kahjzgqzdfyoe3uz@codemonkey.org.uk> <20161022152033.gkmm3l75kqjzsije@codemonkey.org.uk> <20161024044051.onmh4h6sc2bjxzzc@codemonkey.org.uk> <77d9983d-a00a-1dc1-a9a1-631de1d0c146@fb.com> <20161026002752.qvrm6yxqb54fiqnd@codemonkey.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20161014 (1.7.1) X-Spam-Flag: skipped (authorised relay user) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 700 Lines: 21 On Tue, Oct 25, 2016 at 06:39:03PM -0700, Linus Torvalds wrote: > On Tue, Oct 25, 2016 at 6:33 PM, Linus Torvalds > wrote: > > > > Completely untested. Maybe there's some reason we can't write to the > > whole thing like that? > > That hack boots and seems to work for me, but doesn't show anything. > > Dave, mind just trying that oneliner? I gave this a go last thing last night. It crashed within 5 minutes, but it was one we've already seen (the bad page map trace) with nothing additional that looked interesting. I rebooted, and tried again and went to bed. 12 hours later, it's still doing it's thing. Heisenbugs man, literally the worst. Dave