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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 C48ECC433E1 for ; Sun, 21 Mar 2021 12:41:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 989486194C for ; Sun, 21 Mar 2021 12:41:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229897AbhCUMk2 (ORCPT ); Sun, 21 Mar 2021 08:40:28 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:38730 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229840AbhCUMkF (ORCPT ); Sun, 21 Mar 2021 08:40:05 -0400 Received: by mail-il1-f197.google.com with SMTP id o7so37845475ilt.5 for ; Sun, 21 Mar 2021 05:40:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=Du7jbAAe3dZDXGgzm0EhuVuhWQs9ocY52TW7Eb3PJSI=; b=O02TVaj66tsfcvBUqYnIFXLkp0BIEjlUTKS5ohLU5HbQNY34Yn0gEXmOlABDIwcARM hcwZhjLG1SnmJZIWFye8SDfSzZFSepO0xrvrTTU/2mKgT2pNAuRmzJTK7Sl+2FfwfyGV Q+e3F0tAZS38xaSdMiief6xtfLy5sHSlMWiJQMAYMh1DZa6yYM5ill+D4hLbXmFhbcJC 1eQJf+WwN4PqOJD5Rr/NU/MjQmm8a74CAdHWtASEmVgLZ/sQApzS57CB5Kjp/GFVsKZl Jp1TbBNqSxg7SCgrl3PqLytkLv/Zto7DiMeCKq7zdJYqzX/SMrB5sdxw3ptRI5lVTghE xIww== X-Gm-Message-State: AOAM5303n8QT89vCjz/4E1oswNQ2UZEsmbLfrTXl4x6epFu72xEezeQI FJsKJq4aGZj3kB2N4kelSltwei7qABZ445QEayQ7pG2hU09S X-Google-Smtp-Source: ABdhPJwLUId8Sas9RSZ3Jj2SPQjCYzKqv5Gs8fATOIuPtXwbqn1x3RcTQQiwdqKz10rHDN98oBhipUM12tdzeJmdaeVp+nWELDAY MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1351:: with SMTP id k17mr8707489ilr.204.1616330405017; Sun, 21 Mar 2021 05:40:05 -0700 (PDT) Date: Sun, 21 Mar 2021 05:40:05 -0700 In-Reply-To: <00000000000053da9405bd7d2644@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a17fb305be0b3f38@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in disk_part_iter_next (2) From: syzbot To: axboe@kernel.dk, hch@lst.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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