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 autolearn=unavailable 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 C8776C43381 for ; Sun, 24 Mar 2019 20:44:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9437820863 for ; Sun, 24 Mar 2019 20:44:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728645AbfCXUoC (ORCPT ); Sun, 24 Mar 2019 16:44:02 -0400 Received: from mail-it1-f199.google.com ([209.85.166.199]:54460 "EHLO mail-it1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726811AbfCXUoB (ORCPT ); Sun, 24 Mar 2019 16:44:01 -0400 Received: by mail-it1-f199.google.com with SMTP id m132so7463220ita.4 for ; Sun, 24 Mar 2019 13:44:01 -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=c+s9tWvVworkCYx2JoCEUeoAaXjwlLSSZzkTKQU1SMA=; b=ZU9nfwzV6eXYdLQhJtSuxICo+eGoim58ipVPQkv/RlZLhRd/5YbnqyHpkovnEQxywm v/haO0Hz5/Pj+aLRTm94ot1rsbrEHIVU1VNDsiJA8MGdincFTd+qAT0jbtFCuKAHkcb9 W3a8eeZk8vTNpaUadobHckSAKyYLDjcfpAP9mqbr4tuXHAb1YmqyjQ/sicFmS3w21dy4 YqUbwIBskpV3FIcPlBt0RiEIIbIGoYQChTQ7httAl1lErWNQ4vZuT+o60lmIoaKAziFP JLRN8lZjTo5PvUyrW/rvsPu/ZtxSycC6uZZ2UUnZ2s0hdMV+2nwT4nsCjvI25phLZ6us +0ew== X-Gm-Message-State: APjAAAWgGKHGUZGKagZTn3ROkW7gPjfgSgsStMgNTBLO28dTGlGXx1IU wY4BDJPUJVqVnJeWy+szZzKgn6mCHgAzsGryl55qNQ/5VKWi X-Google-Smtp-Source: APXvYqwxEXst9lvpD1gep57sfayH4XUWdajkCov9aZ8fQj/63rCGPGzcSytUzDfDXuAE4DSPX7R8wd5TJ7d8BfiebCrZva2L+/MI MIME-Version: 1.0 X-Received: by 2002:a05:660c:1c8:: with SMTP id s8mr6429399itk.20.1553460241119; Sun, 24 Mar 2019 13:44:01 -0700 (PDT) Date: Sun, 24 Mar 2019 13:44:01 -0700 In-Reply-To: <0000000000006c6fee057bbd0ef3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000d83e790584dd2500@google.com> Subject: Re: KASAN: use-after-free Read in trailing_symlink 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: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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=1050253b200000 start commit: ef78e5ec ia64: export node_distance function git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=1250253b200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1450253b200000 kernel config: https://syzkaller.appspot.com/x/.config?x=c94f9f0c0363db4b dashboard link: https://syzkaller.appspot.com/bug?extid=a13e5ead792d6df37818 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13633e47400000 Reported-by: syzbot+a13e5ead792d6df37818@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