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=-0.8 required=3.0 tests=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 E79B7C433EF for ; Fri, 15 Jun 2018 20:24:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9E0D4208B8 for ; Fri, 15 Jun 2018 20:24:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9E0D4208B8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=iogearbox.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966417AbeFOUYe (ORCPT ); Fri, 15 Jun 2018 16:24:34 -0400 Received: from www62.your-server.de ([213.133.104.62]:32808 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966118AbeFOUYd (ORCPT ); Fri, 15 Jun 2018 16:24:33 -0400 Received: from [178.197.249.15] (helo=linux.home) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-SHA:256) (Exim 4.85_2) (envelope-from ) id 1fTvGo-0003Dw-RY; Fri, 15 Jun 2018 22:24:30 +0200 Subject: Re: WARNING: kmalloc bug in memdup_user (3) To: syzbot , ast@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <0000000000005ff424056c5476bf@google.com> From: Daniel Borkmann Message-ID: Date: Fri, 15 Jun 2018 22:24:30 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <0000000000005ff424056c5476bf@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.99.3/24665/Fri Jun 15 14:39:28 2018) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/16/2018 05:35 PM, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:    c5c7d7f3c451 Merge branch 'bpf-sock-hashmap' > git tree:       bpf-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1626ae37800000 > kernel config:  https://syzkaller.appspot.com/x/.config?x=10c4dc62055b68f5 > dashboard link: https://syzkaller.appspot.com/bug?extid=0f92a17b0706231d0a09 > compiler:       gcc (GCC) 8.0.1 20180413 (experimental) > syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=126a5197800000 > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1598c477800000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+0f92a17b0706231d0a09@syzkaller.appspotmail.com #syz fix: bpf: fix sock hashmap kmalloc warning