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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 A029BC43381 for ; Mon, 25 Mar 2019 04:52:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 71F202087E for ; Mon, 25 Mar 2019 04:52:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726177AbfCYEwC (ORCPT ); Mon, 25 Mar 2019 00:52:02 -0400 Received: from mail-it1-f200.google.com ([209.85.166.200]:38121 "EHLO mail-it1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726028AbfCYEwC (ORCPT ); Mon, 25 Mar 2019 00:52:02 -0400 Received: by mail-it1-f200.google.com with SMTP id r136so7772670ith.3 for ; Sun, 24 Mar 2019 21:52:01 -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=WcXVUAK+lZFpkdWJr/seSTlJnJy+pQhGCMX6I+mL6ls=; b=RmYVtusAtG6pvkCiBfc0qSL6AwjlqJmYk+HDRO2bMVWqNSRLlyKfzJFeznHYtpfS6/ gDnD0s/uL+P/AdFWKka6kbuZdqs//Jx5O1TICSZHAViTTehP13uGW4XUVl1q8Gsg0y+x NiLqQ7b2ZzHDIt8kpX2zn2CD/LXL0VQ8d6P9qqjMSYJobgbmQ7tpBbrjnNi2puEvHZco 9+wHrO2AWNWLJwrwL8kGGqEzLVIBBitv0kKsWNf275OtdEPgsEWa9UcroCCD3sdZWRR/ FeN/6Ie+ktRIJAUnWB2ZwMk6SMG9Ve8OJUN8Taqg1CIOVbwuE88wCjitUoTYDNhkx1Dd oDSw== X-Gm-Message-State: APjAAAWQIxMh/fftEdHfjBHl4KfWCOP2ppuE1QZByYBvLjXA049bf0g2 JVFcvZExAeocIZRkjl50TjVRtWvL13ptOMU7yqZqf98tyiEa X-Google-Smtp-Source: APXvYqx9Y9m/MMu7uF4zVR2fBYaG84rNBR13pG7qYtp/8Mf34yY1qlXsI+PS6RDfj2TmfhKwzXmzn43jK4PPH+fQ4csjYPtBFEBC MIME-Version: 1.0 X-Received: by 2002:a6b:d913:: with SMTP id r19mr7700493ioc.76.1553489521291; Sun, 24 Mar 2019 21:52:01 -0700 (PDT) Date: Sun, 24 Mar 2019 21:52:01 -0700 In-Reply-To: <000000000000663620057bbd0e9d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000143bcd0584e3f7ea@google.com> Subject: Re: KASAN: use-after-free Read in link_path_walk From: syzbot To: ast@kernel.org, daniel@iogearbox.net, davem@davemloft.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this bug to: commit 0f98621bef5d2b7ad41f6595899660af344f5016 Author: Daniel Borkmann Date: Sat Oct 29 00:30:46 2016 +0000 bpf, inode: add support for symlinks and fix mtime/ctime bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13c347a3200000 start commit: ef78e5ec ia64: export node_distance function git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=102347a3200000 console output: https://syzkaller.appspot.com/x/log.txt?x=17c347a3200000 kernel config: https://syzkaller.appspot.com/x/.config?x=c94f9f0c0363db4b dashboard link: https://syzkaller.appspot.com/bug?extid=fb731ca573367b7f6564 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11116225400000 Reported-by: syzbot+fb731ca573367b7f6564@syzkaller.appspotmail.com Fixes: 0f98621bef5d ("bpf, inode: add support for symlinks and fix mtime/ctime") For information about bisection process see: https://goo.gl/tpsmEJ#bisection