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[209.132.180.67]) by mx.google.com with ESMTP id a14si3218772edn.303.2019.11.24.11.09.23; Sun, 24 Nov 2019 11:10:16 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 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 S1726891AbfKXTHC (ORCPT + 99 others); Sun, 24 Nov 2019 14:07:02 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:42190 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726851AbfKXTHB (ORCPT ); Sun, 24 Nov 2019 14:07:01 -0500 Received: by mail-il1-f198.google.com with SMTP id n16so11885328ilm.9 for ; Sun, 24 Nov 2019 11:07:01 -0800 (PST) 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=0iPpdRzq0L7+RSFavqTsQfmCi/uTeccXAim0E/TGr2Q=; b=QWeETcvoFtFrb0em+pBCPMKNBSdgmBojAmBZl72mxOakfhwau2xzGW3zlCCLF8IdGc JHnzNv1W4FO1e8/OUtdVQsik9gdJBkObz1bTbXEQ5T31UFZNbKCIZmCdhQXLkYJo/2KD NRK1+HrMQCKRSIIa51U5jNQ5e6m3w1w1wuqFbGlpImwbRUn97byLOD/yDNbJfEB9nH5n zDIsvMm2sNvEZbTXxMDF8OJpKiRiZB2oBQXb60o/2uiVyDoTRd7weu1pHktOyC0nO0Fh MGhaikJG+OfmNxNLuw1HKLmhD2xdd0WuCRVYcs3NfJON6CsFgMjQFS6WZXLKhmyGOV6t Jx1A== X-Gm-Message-State: APjAAAXnK6+bqceUcyuzxzOzJbatbXRyM5rqez1lybbG8S2jDo7oEpOR VJ6jaZkUZhpzYPj0GeFrzC6rr31OYHV2rdVsRuD0eAQ+LCAo MIME-Version: 1.0 X-Received: by 2002:a5d:9153:: with SMTP id y19mr23281646ioq.26.1574622420789; Sun, 24 Nov 2019 11:07:00 -0800 (PST) Date: Sun, 24 Nov 2019 11:07:00 -0800 In-Reply-To: <000000000000e59aab056e8873ae@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000beff305981c5ac6@google.com> Subject: Re: KASAN: use-after-free Read in blkdev_get From: syzbot To: cmetcalf@ezchip.com, coreteam@netfilter.org, davem@davemloft.net, dvyukov@google.com, gang.chen.5i5j@gmail.com, kaber@trash.net, kadlec@blackhole.kfki.hu, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 77ef8f5177599efd0cedeb52c1950c1bd73fa5e3 Author: Chris Metcalf Date: Mon Jan 25 20:05:34 2016 +0000 tile kgdb: fix bug in copy to gdb regs, and optimize memset bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1131bc0ee00000 start commit: f5b7769e Revert "debugfs: inode: debugfs_create_dir uses m.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1331bc0ee00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1531bc0ee00000 kernel config: https://syzkaller.appspot.com/x/.config?x=709f8187af941e84 dashboard link: https://syzkaller.appspot.com/bug?extid=eaeb616d85c9a0afec7d syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177f898f800000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147eb85f800000 Reported-by: syzbot+eaeb616d85c9a0afec7d@syzkaller.appspotmail.com Fixes: 77ef8f517759 ("tile kgdb: fix bug in copy to gdb regs, and optimize memset") For information about bisection process see: https://goo.gl/tpsmEJ#bisection