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=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 B3CDBC33C9C for ; Sun, 24 Nov 2019 19:07:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9DA782075E for ; Sun, 24 Nov 2019 19:07:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726867AbfKXTHC (ORCPT ); Sun, 24 Nov 2019 14:07:02 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:38419 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726855AbfKXTHB (ORCPT ); Sun, 24 Nov 2019 14:07:01 -0500 Received: by mail-il1-f198.google.com with SMTP id o18so7490577ilb.5 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=nPlreA4hBWlKwAy85jVmnJnGmnRW18/URsO7oAyICm712EE447D0a9O87zBFVgk8uY 2CkQoT7B8hbvbQXLKm95QcOn5Zr0pWi3M1H00L9wMXnDwidyr+dHAHfJNLsSeGOl+hl5 sETjQIYlanXCef+hPuZ5E3Op1M7Vo+puaKT0KJlUeZDRnEju4QatOMS2uuYL52fdqgy0 Wt/e1eSyFa/GD7K0F9q+mu9VUmjjd7wnMX2q/oG3XedM6isSMuQMpQz/yekGLNVVNoLa FWtN8eyAgaLfOVMrO1U3Sy19BF0vaL6FUn9HuMQGrwdMxLrjHm5HIirwwaptr/lmWz09 hyLw== X-Gm-Message-State: APjAAAWWYvddc/BMQFxCVrd9KVSzFvkwiP0d/00R2C4hgLW31fgSQ+G9 ML0Pm63i6M8fbxSRNsnfGm+alxchZnxN5Jq/PXb1ckfyXWo3 X-Google-Smtp-Source: APXvYqxzdQLTUAzZHkNrn+IW7dBHAAZnrSGKEzdtkJeRCBqjt/+dvnBg9GSfzUg/aUk4k+sN4UpRfbhAt4p8PcJXTniYzbgEeEFN 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: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@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