From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 79316C433DB for ; Fri, 8 Jan 2021 14:36:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 371E823884 for ; Fri, 8 Jan 2021 14:36:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727085AbhAHOgQ (ORCPT ); Fri, 8 Jan 2021 09:36:16 -0500 Received: from mx2.suse.de ([195.135.220.15]:45906 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725942AbhAHOgQ (ORCPT ); Fri, 8 Jan 2021 09:36:16 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 6E531AD11; Fri, 8 Jan 2021 14:35:34 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id C73F0DA6E9; Fri, 8 Jan 2021 15:33:43 +0100 (CET) Date: Fri, 8 Jan 2021 15:33:43 +0100 From: David Sterba To: Filipe Manana Cc: syzbot , Chris Mason , David Sterba , Filipe David Borba Manana , Josef Bacik , linux-btrfs , Linux Kernel Mailing List , mingo@kernel.org, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org Subject: Re: KASAN: null-ptr-deref Write in start_transaction Message-ID: <20210108143343.GY6430@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Filipe Manana , syzbot , Chris Mason , David Sterba , Filipe David Borba Manana , Josef Bacik , linux-btrfs , Linux Kernel Mailing List , mingo@kernel.org, mingo@redhat.com, peterz@infradead.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com, will@kernel.org References: <00000000000053e36405b3c538fc@google.com> <0000000000008f60c505b84f2cd0@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Fri, Jan 08, 2021 at 02:22:00PM +0000, Filipe Manana wrote: > On Thu, Jan 7, 2021 at 1:13 PM syzbot > wrote: > > > > syzbot suspects this issue was fixed by commit: > > > > commit f30bed83426c5cb9fce6cabb3f7cc5a9d5428fcc > > Author: Filipe Manana > > Date: Fri Nov 13 11:24:17 2020 +0000 > > > > btrfs: remove unnecessary attempt to drop extent maps after adding inline extent > > > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ddc30b500000 > > start commit: 521b619a Merge tag 'linux-kselftest-kunit-fixes-5.10-rc3' .. > > git tree: upstream > > kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff > > dashboard link: https://syzkaller.appspot.com/bug?extid=6700bca07dff187809c4 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a07ab2500000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe69c6500000 > > > > If the result looks correct, please mark the issue as fixed by replying with: > > > > #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent > > Nop, it can't be this change. > > What should fix it should be the following commit: > > commit ecfdc08b8cc65d737eebc26a1ee1875a097fd6a0 > Author: Goldwyn Rodrigues > Date: Thu Sep 24 11:39:21 2020 -0500 > > btrfs: remove dio iomap DSYNC workaround Thanks! #syz unfix