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 681ECC43381 for ; Tue, 26 Mar 2019 05:44:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E37320856 for ; Tue, 26 Mar 2019 05:44:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731086AbfCZFoC (ORCPT ); Tue, 26 Mar 2019 01:44:02 -0400 Received: from mail-io1-f69.google.com ([209.85.166.69]:50725 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725535AbfCZFoC (ORCPT ); Tue, 26 Mar 2019 01:44:02 -0400 Received: by mail-io1-f69.google.com with SMTP id s24so9458249ioe.17 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=sqHgHBcrWqoAzm71fRVhQTa7pYmwxwDXOcBEJFC+LqDI3aOjJOE9TA7DUYPUHN8oBb jQYIS5eC2+2SklBtryXL5zbHKJZNbhYwb6ki5mPxHoiAllpv8xk7UxIhMJ6CkK/kP/H8 O1PZ+G+vcB39UKsIhkIveiVvwHCNZIR/PcZqykKFoPsKDVPcHdy+nTfyBiBSGESta6Fz lEbpqROZyOnevl4Clg/RMLMmqxpAue6a8CXOslaDCDUdJ3354hJTrMpn4mj19eYDPtQb 2DQmJKCxttHSSxEV71PJ+mfP8Vajzh63/ANolPmJFY2fgMYNEdllo6L3DTfLoWvd0CkZ N/vQ== X-Gm-Message-State: APjAAAV4h4DD/MrOYwzTAT5wLmC49vM359/KGubdpFHbQIxRg005DYQQ 1l3JFVxuXZ6+HR9S8y1Qoveyndmco8+33RwsHWx3Wyqa8Syc 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: 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 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