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[23.128.96.18]) by mx.google.com with ESMTP id t22si6196198ejy.466.2020.08.31.15.54.00; Mon, 31 Aug 2020 15:54:23 -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 S1728384AbgHaU3I (ORCPT + 99 others); Mon, 31 Aug 2020 16:29:08 -0400 Received: from mail-io1-f72.google.com ([209.85.166.72]:43551 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728324AbgHaU3I (ORCPT ); Mon, 31 Aug 2020 16:29:08 -0400 Received: by mail-io1-f72.google.com with SMTP id f19so4934964iol.10 for ; Mon, 31 Aug 2020 13:29:07 -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=gnKsjgJ5rv+iBjKke+34Do0zneKwGI7SNQuffWwXV30=; b=TSb/FBaOaqiAtTJSO3Aw1gp8kj1cUkla+tjG4x9u7G+Vi+vJ3JX+uOXRzncD6aVeXA gXuaF9vlbIxB5qSkWDGUyGLKPs92al0HejsQkqWdojkj3kZz49jJT7ddgTkD/ZcZbAR3 VjfHibIidPABS0bYuV2JML8N6wAg8kjbnrcsjewClyLMu/zetLb5asGkDi6BWWHeG4Vg nKy6dyH/cVBsXIbOYNBEJ/uvJiMT3ZTZ961urHdYCQlUlAzuY/sslEU8W8KlN1Hxzrle ExyU4KGxwCj5D4L7KyiLxPXFvK68BpROQKhiBIfXHxDDq12AjtGuTapXPxohZ7jI7NSX ePjg== X-Gm-Message-State: AOAM532joGzTC7rg+1KuntnqYWnr7UtS1RvmKHH9isuXQK08HuVRp+DN TPOt8JHf5v9XwWJBtaVYZighuVQdIGVhcCeRDukbPts6SPMb MIME-Version: 1.0 X-Received: by 2002:a05:6602:2b13:: with SMTP id p19mr2800611iov.30.1598905747341; Mon, 31 Aug 2020 13:29:07 -0700 (PDT) Date: Mon, 31 Aug 2020 13:29:07 -0700 In-Reply-To: <000000000000520ffc05ae2f4fee@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001985dc05ae32417b@google.com> Subject: Re: KASAN: use-after-free Read in bdev_del_partition From: syzbot To: axboe@kernel.dk, hch@lst.de, jack@suse.cz, johannes.thumshirn@wdc.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit cddae808aeb77e5c29d22a8e0dfbdaed413f9e04 Author: Christoph Hellwig Date: Tue Apr 14 07:28:54 2020 +0000 block: pass a hd_struct to delete_partition bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17fa7656900000 start commit: dcc5c6f0 Merge tag 'x86-urgent-2020-08-30' of git://git.ke.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=14067656900000 console output: https://syzkaller.appspot.com/x/log.txt?x=10067656900000 kernel config: https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650 dashboard link: https://syzkaller.appspot.com/bug?extid=6448f3c229bc52b82f69 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=154e2285900000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16f6e915900000 Reported-by: syzbot+6448f3c229bc52b82f69@syzkaller.appspotmail.com Fixes: cddae808aeb7 ("block: pass a hd_struct to delete_partition") For information about bisection process see: https://goo.gl/tpsmEJ#bisection