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=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 72ABAC43381 for ; Tue, 26 Mar 2019 05:44:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4889E20823 for ; Tue, 26 Mar 2019 05:44:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731043AbfCZFoC (ORCPT ); Tue, 26 Mar 2019 01:44:02 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:44630 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726275AbfCZFoC (ORCPT ); Tue, 26 Mar 2019 01:44:02 -0400 Received: by mail-io1-f69.google.com with SMTP id c2so9470233ioh.11 for ; Mon, 25 Mar 2019 22:44:01 -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=1TkUpKsmlvatpbMPOJZlrVefntTX85Tjiz7qOFvWkTo=; b=P/MYC4nBMqJSK8jMMZFHMasePf9KHUgGAz29xGdlM3c0lQSRRhz0sVuWx2X+Nkc+DU vYAfeImyHNBpL3VHdA2wn5wnNE4oKfwunXwB4h/oN+bncVrrl0c+UMYXDoq/AF8bAfRd FnHNUAck2cZoreuxC0qRd0TXPhokqxyr3KFCv4hfLgdlF0LO093z7yjKaTJDcyQI10F5 12toiw65g9+QSn5F4UT66ucueelixDyCEBDBrMRAVvB71q0SIaXncnqapCpGtozoM6On 0zNX4U/b4UcBcjjjt+jqs/+dKuNkHrEBoCwLfI8AtPR1kY4HTvqvzDzu63UVL/wnlu6E o+GQ== X-Gm-Message-State: APjAAAUVt4KXbsB17JRh/jImgMyl8Blbuf//w5OGoYWJrgUdMwbnC0ZY x+MaKiH/sEfLkbOXeOgwMH28pLgLN7VwSOjJpp1FYVO1+h+O X-Google-Smtp-Source: APXvYqxGeQOIrT4dU49V/kZkgjboGzDUBvXSkPEKOjC+PMn9Q5Gck9hNeZJObC6GUP4HWmj2WnITCWJKCpJ5dQl81ipDBQ4tMqvP MIME-Version: 1.0 X-Received: by 2002:a05:660c:381:: with SMTP id x1mr2340628itj.78.1553579041447; Mon, 25 Mar 2019 22:44:01 -0700 (PDT) Date: Mon, 25 Mar 2019 22:44:01 -0700 In-Reply-To: <000000000000b99324057af4dabb@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e567590584f8cec6@google.com> Subject: Re: BUG: unable to handle kernel paging request in bpf_prog_kallsyms_find From: syzbot To: ast@fb.com, ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com 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 f4d7e40a5b7157e1329c3c5b10f60d8289fc2941 Author: Alexei Starovoitov Date: Fri Dec 15 01:55:06 2017 +0000 bpf: introduce function calls (verification) bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17b5a0cd200000 start commit: 592ee43f bpf: fix null pointer dereference on pointer offl.. git tree: bpf-next final crash: https://syzkaller.appspot.com/x/report.txt?x=1475a0cd200000 console output: https://syzkaller.appspot.com/x/log.txt?x=1075a0cd200000 kernel config: https://syzkaller.appspot.com/x/.config?x=7e5cbc38ae27657e dashboard link: https://syzkaller.appspot.com/bug?extid=66d6b1d3055f1d9ee4f3 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10e4ec25400000 Reported-by: syzbot+66d6b1d3055f1d9ee4f3@syzkaller.appspotmail.com Fixes: f4d7e40a5b71 ("bpf: introduce function calls (verification)") For information about bisection process see: https://goo.gl/tpsmEJ#bisection