Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp66295imm; Thu, 12 Jul 2018 14:16:15 -0700 (PDT) X-Google-Smtp-Source: AAOMgpcuB3fu3M9Bn+5mM5qlMRb6VzZRH8ilW48WNlwYHxk1aKWxwerEfb7XBjfvzyFJrA/OUrn0 X-Received: by 2002:a17:902:88:: with SMTP id a8-v6mr3604879pla.156.1531430175855; Thu, 12 Jul 2018 14:16:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1531430175; cv=none; d=google.com; s=arc-20160816; b=WZ0lTb+5ochDcjp7RJu3V6IXKng88zv7wFkoAHQGPROckMVpkBa2omWhdhoNXXIqf9 xHPBV3rKdkfPtXA1rs9D+CP/q40L3QE57zHqwCrdbVneXP//f20W5FmgR0spuVNYlSs4 9NmGXD42Az+ftx0oDv7n5ZZ3iilp6Bo/Vg688sMwI1J4jmENAiQSowm3+yoTJvAixJhA OWgVYeoNictjrovslL6zRlEW/0Q9uIClm57aeS7P40hNMvj2NGGxutNNbnX498sCIXDZ j72I0Ico2ibUsMhvvZKFvQXjBtKLhyujTqVdJrLnw1Zq4wdLEMk+ei5Dgvy9keUrOY1S uXDw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:cc:to:subject:arc-authentication-results; bh=zDiKoDAyud8s2BlZRl8utHdeON3CcqgoLjgf5bMMhM0=; b=NFxTGaHEffD/umIXuV3azUZAPRDAqtTBu85hNbVpw7WlWqMutccM9XpEGTXfJ0k0X1 9XwMxWpC8BV427aQY7peLILQedsPNjUSMBLhe+TktMjI1D7Q/eWr7KNczTL0HpgfptW9 OscIxT5JypYGiy/orjCn0Gb+QlcBKqBAhF4LC79L6LwKhmz0HydzVkk9Hur1i3Jpyn19 aVfz/+RA2JuuYvsPmi9SDrv1DIz0BYGs/E37Lv4Asf9ynNoqhe01w5BZHAlN3em3uNFJ +uuFwwQNh69aZH4YEY20ZUs0DGIfrtD5R1d4OVhpJTeH49j/JEqRGUbtL8LhTu7FLqtM sZ1g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q13-v6si21836961plr.220.2018.07.12.14.15.59; Thu, 12 Jul 2018 14:16:15 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732920AbeGLV0o (ORCPT + 99 others); Thu, 12 Jul 2018 17:26:44 -0400 Received: from www62.your-server.de ([213.133.104.62]:48209 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732816AbeGLV0o (ORCPT ); Thu, 12 Jul 2018 17:26:44 -0400 Received: from [78.46.172.2] (helo=sslproxy05.your-server.de) by www62.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85_2) (envelope-from ) id 1fdivp-00021p-6N; Thu, 12 Jul 2018 23:15:21 +0200 Received: from [62.203.87.61] (helo=linux.home) by sslproxy05.your-server.de with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1fdivp-000KGl-0a; Thu, 12 Jul 2018 23:15:21 +0200 Subject: Re: WARNING in bpf_check To: Dmitry Vyukov , syzbot Cc: Alexei Starovoitov , LKML , netdev , syzkaller-bugs References: <00000000000025f8880570c87c51@google.com> From: Daniel Borkmann Message-ID: Date: Thu, 12 Jul 2018 23:15:20 +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: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Authenticated-Sender: daniel@iogearbox.net X-Virus-Scanned: Clear (ClamAV 0.100.0/24746/Thu Jul 12 14:54:54 2018) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/12/2018 09:51 AM, Dmitry Vyukov wrote: > On Thu, Jul 12, 2018 at 9:41 AM, syzbot > wrote: >> Hello, >> >> syzbot found the following crash on: >> >> HEAD commit: 671dffa7de7b Merge branch 'bpf-bpftool-improved-prog-load' >> git tree: bpf-next >> console output: https://syzkaller.appspot.com/x/log.txt?x=1550b562400000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=a501a01deaf0fe9 >> dashboard link: https://syzkaller.appspot.com/bug?extid=7d427828b2ea6e592804 >> compiler: gcc (GCC) 8.0.1 20180413 (experimental) #syz fix: bpf: don't leave partial mangled prog in jit_subprogs error path