Received: by 2002:a25:ab43:0:0:0:0:0 with SMTP id u61csp132032ybi; Fri, 24 May 2019 01:10:17 -0700 (PDT) X-Google-Smtp-Source: APXvYqwdYCjNHpOA+NN9AiwS+4kWpzKqfLj2frMxPSdPFj8PUsLQ4aL+oL0hNTcHCZl72lKF8rS7 X-Received: by 2002:a62:425b:: with SMTP id p88mr60028035pfa.26.1558685417350; Fri, 24 May 2019 01:10:17 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558685417; cv=none; d=google.com; s=arc-20160816; b=QTeYAMuQsQ2NBdMrEQWecp5IbE8dczn7V/5ve0mM966jOdeVeHAWGBWgVAA4211MKo k3CmEAz8OB+qADt2PHXXOrwku5KrJe9dhy/Z/dqSz8Rw4fUt8Zh8669LiXZA40Yd344w YAX/MGwCrzEAeIyk8QFvAMul2ekWqRSuEyKnaUo6zM9YwDW6mMJ309sN8JkMjmZIXG3w P+jrHQ98C2d1CoB/bTko4wdLo+sJaHeWq/Di9BxzE7C20mo9vXabMNOBxkjx+MTMNNtI 5v5yt//n2biczNky1Exarj6EUgTN2PK4wspqLxN+1XfCa2BnvfT+5cJ49nEAEQDowAxb RJxg== 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:to:subject; bh=jziE5OudsvAQH2Ac9WWTd0EnutywonVr5IEDscvu4rs=; b=eOdx6/mUkRhYOlt0sKTTrT37bTBPPP5aGERqap9HE17v2QDxuyCHRVZamGWlncZ8GB opu8WD6bRmzzSTTbL5Eohd1UDRQEB53JwrtSqQBLZWepZVZ/ntcq/XYnnJb3lz4jl6T8 frlCxwUYsSaOuX/xApmGzPVEG6a79dXBjPimr7uqxiJ2Fyqa6UzFXtcUP/rPHVXcvGlF bFWQ2y29mexuHPoXuvlJxn/a17HoF4FPrEpFhH327dZIYYsU4GOxY90OQ9vlDpIsgX+A IYRzcGwBxbrNuUZ2dEX1D1/P9ZLWkT21Jh9YLzDQEKveAJw1KibABSfSKMf62iKSSobo V4hg== 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 e6si2937504pfe.111.2019.05.24.01.09.57; Fri, 24 May 2019 01:10:17 -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 S2389412AbfEXIIK (ORCPT + 99 others); Fri, 24 May 2019 04:08:10 -0400 Received: from www62.your-server.de ([213.133.104.62]:58794 "EHLO www62.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388959AbfEXIIK (ORCPT ); Fri, 24 May 2019 04:08:10 -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 4.89_1) (envelope-from ) id 1hU5FI-0007Rn-Eo; Fri, 24 May 2019 10:08:08 +0200 Received: from [178.197.249.12] (helo=linux.home) by sslproxy05.your-server.de with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1hU5FI-000VH1-8U; Fri, 24 May 2019 10:08:08 +0200 Subject: Re: bpf build error To: syzbot , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <0000000000008666df05899b7663@google.com> From: Daniel Borkmann Message-ID: <649cac1e-c77c-daf8-6ae7-b02c8571b988@iogearbox.net> Date: Fri, 24 May 2019 10:08:07 +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: <0000000000008666df05899b7663@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 0.100.3/25458/Thu May 23 09:58:32 2019) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/24/2019 07:28 AM, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:    e6f6cd0d bpf: sockmap, fix use after free from sleep in ps.. > git tree:       bpf > console output: https://syzkaller.appspot.com/x/log.txt?x=16f116e4a00000 > kernel config:  https://syzkaller.appspot.com/x/.config?x=fc045131472947d7 > dashboard link: https://syzkaller.appspot.com/bug?extid=cbe357153903f8d9409a > compiler:       gcc (GCC) 9.0.0 20181231 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+cbe357153903f8d9409a@syzkaller.appspotmail.com > > net/core/skbuff.c:2340:6: error: ‘struct msghdr’ has no member named ‘flags’ Disregard, tossed from bpf tree.