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=-5.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, 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 17212C43381 for ; Wed, 27 Mar 2019 12:55:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DB68F2146F for ; Wed, 27 Mar 2019 12:55:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729510AbfC0MzB (ORCPT ); Wed, 27 Mar 2019 08:55:01 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:37327 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726319AbfC0MzB (ORCPT ); Wed, 27 Mar 2019 08:55:01 -0400 Received: by mail-io1-f71.google.com with SMTP id u22so13022431iof.4 for ; Wed, 27 Mar 2019 05:55:01 -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=zdt2r52Uffvru9gxgpG6IO5wRYSwR+ymhr5Zg2FzhkM=; b=lGPmQNOuZI1cEYQWXfxlULozQBFIToG8tUWAt/7orwXEt9xXu32rZxeXKABVlrs6ls MqfNGMKQiQq3XVbg86WDkg3xafYT1leKzasGdgx0PrsdrVRNbm/O3MlGnjfv7yTGnMOt +YvxKlS4HZimLEqNSok6X4zgBgwecLon0OIMMX/U4W/gGJxo1Q1XxcqPdv5eu+hseJ5j PFfWIHtk2U2VsOVJn7LzlyEYSWRjD1CS/k0aZP3jFWe1aBW6Si4h/yP4mElj6k80FBe4 AJsLf/IeWT1A9YFX4XmMuCoHN1YJtA4mecQYkfHghHi5KEY39psCMuLgFX4p9UvGok/S jlMQ== X-Gm-Message-State: APjAAAW8PSg7OeP1LSkB1xdaYDLk+DtwGJEMJQzZ8o0VuI4JaHBUK4UU vGv3MXYWZokpI/nnCZaPYlkxrF4xrEIBXE7BdQyBozfRIEr8 X-Google-Smtp-Source: APXvYqwvm3+6iNYbVN3WEaWdTMcnI25DiObMgPtMAyEUyU/jLT02M6aQSm6LOJIYPy9Fw3Hhne2uj/gt15T2MvQgfg9s0/JXZ54w MIME-Version: 1.0 X-Received: by 2002:a02:634a:: with SMTP id j71mr1582707jac.18.1553691300852; Wed, 27 Mar 2019 05:55:00 -0700 (PDT) Date: Wed, 27 Mar 2019 05:55:00 -0700 In-Reply-To: <0000000000001d985405783e8aee@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000141efb058512f295@google.com> Subject: Re: KASAN: use-after-free Read in bpf_prog_kallsyms_del 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=14d1915d200000 start commit: 1ce80e0f Merge tag 'fsnotify_for_v4.20-rc3' of git://git.k.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=16d1915d200000 console output: https://syzkaller.appspot.com/x/log.txt?x=12d1915d200000 kernel config: https://syzkaller.appspot.com/x/.config?x=d86f24333880b605 dashboard link: https://syzkaller.appspot.com/bug?extid=10cffda23c81a3ff1088 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17e0be2b400000 Reported-by: syzbot+10cffda23c81a3ff1088@syzkaller.appspotmail.com Fixes: f4d7e40a5b71 ("bpf: introduce function calls (verification)") For information about bisection process see: https://goo.gl/tpsmEJ#bisection