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[23.128.96.18]) by mx.google.com with ESMTP id x16si8853813edd.234.2021.03.21.05.41.35; Sun, 21 Mar 2021 05:41:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229871AbhCUMk1 (ORCPT + 99 others); Sun, 21 Mar 2021 08:40:27 -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 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