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=-10.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 1F093C433C1 for ; Wed, 24 Mar 2021 09:50:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DC28D619B4 for ; Wed, 24 Mar 2021 09:50:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232710AbhCXJuR (ORCPT ); Wed, 24 Mar 2021 05:50:17 -0400 Received: from verein.lst.de ([213.95.11.211]:36232 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232685AbhCXJtu (ORCPT ); Wed, 24 Mar 2021 05:49:50 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 6360C68B05; Wed, 24 Mar 2021 10:49:47 +0100 (CET) Date: Wed, 24 Mar 2021 10:49:47 +0100 From: Christoph Hellwig To: syzbot Cc: axboe@kernel.dk, hch@lst.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Subject: Re: [syzbot] KASAN: use-after-free Read in disk_part_iter_next (2) Message-ID: <20210324094947.GA9252@lst.de> References: <00000000000053da9405bd7d2644@google.com> <000000000000a17fb305be0b3f38@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000a17fb305be0b3f38@google.com> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org #syz test: git://git.infradead.org/users/hch/block.git part-iter-fix On Sun, Mar 21, 2021 at 05:40:05AM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit a33df75c6328bf40078b35f2040d8e54d574c357 > Author: Christoph Hellwig > Date: Sun Jan 24 10:02:41 2021 +0000 > > block: use an xarray for disk->part_tbl > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17989906d00000 > start commit: 1c273e10 Merge tag 'zonefs-5.12-rc4' of git://git.kernel.o.. > git tree: upstream > final oops: https://syzkaller.appspot.com/x/report.txt?x=14589906d00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=10589906d00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=6abda3336c698a07 > dashboard link: https://syzkaller.appspot.com/bug?extid=8fede7e30c7cee0de139 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13dfe8bed00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155a117cd00000 > > Reported-by: syzbot+8fede7e30c7cee0de139@syzkaller.appspotmail.com > Fixes: a33df75c6328 ("block: use an xarray for disk->part_tbl") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection ---end quoted text---