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[209.132.180.67]) by mx.google.com with ESMTP id 72si2199305pld.794.2017.11.02.05.37.26; Thu, 02 Nov 2017 05:37:40 -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 S1754215AbdKBMgt (ORCPT + 96 others); Thu, 2 Nov 2017 08:36:49 -0400 Received: from outprodmail02.cc.columbia.edu ([128.59.72.51]:46340 "EHLO outprodmail02.cc.columbia.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751370AbdKBMgr (ORCPT ); Thu, 2 Nov 2017 08:36:47 -0400 Received: from hazelnut (hazelnut.cc.columbia.edu [128.59.213.250]) by outprodmail02.cc.columbia.edu (8.14.4/8.14.4) with ESMTP id vA2CW6NO040070 for ; Thu, 2 Nov 2017 08:36:47 -0400 Received: from hazelnut (localhost.localdomain [127.0.0.1]) by hazelnut (Postfix) with ESMTP id 59B496D for ; Thu, 2 Nov 2017 08:36:47 -0400 (EDT) Received: from sendprodmail03.cc.columbia.edu (sendprodmail03.cc.columbia.edu [128.59.72.15]) by hazelnut (Postfix) with ESMTP id A7BD180 for ; Thu, 2 Nov 2017 08:36:46 -0400 (EDT) Received: from mail-wr0-f199.google.com (mail-wr0-f199.google.com [209.85.128.199]) by sendprodmail03.cc.columbia.edu (8.14.4/8.14.4) with ESMTP id vA2CajMA004167 (version=TLSv1/SSLv3 cipher=AES128-GCM-SHA256 bits=128 verify=NOT) for ; Thu, 2 Nov 2017 08:36:46 -0400 Received: by mail-wr0-f199.google.com with SMTP id l18so2867250wrc.23 for ; Thu, 02 Nov 2017 05:36:46 -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:from:date:message-id:subject:to:cc; bh=eTT+frPwWgsGeHCclriGNT8isGiUAkZ5sO4S8zPBVKk=; b=DI38M5kKKIBICBlvUJVCzNlx+UD/SFxA8gk/xNW/AU7uRr4fKgCx/5U8X6jCascLis xE+HukZXeXcdlMIL9Azq3N+/j/v3MFxhr82XN6ttbITyJdGMurq03skhEzdiGOfP5EKQ BlLWTTj/QjlXeT3hLgZ3tljyUuBnr3sN2DKBm4c5XE49Q3bKVsZx4w8Ng51JqRx4UiwT SzBXgj8Zhjo/iTyIW8WzynCtzPV4ETI9cQVy4SO7sf301bmwPcA3M+Jsba8SfSpMRPG2 n9L7RXZu02BTfbb/fi+m9mfSuMYUPvNd+VM5ZMWR0NUra+8nZwn/h3b/qFv4jofLq9rK dMPw== X-Gm-Message-State: AMCzsaXl6RUEH+Uxz7Ri4+4TSyP9CtCvmszR0JAsVRrrVzPIZ51N9mF2 Cf1iS7rk+FaUPRTDRV4v5m7yfYuJ0TuzmWVfSyRPqgEKCgNyiqEMZNfv7t0HjfGr683yVHL3koo IqItViCR/h5yW7ekv6XAQeTnpKO4Qu5F39QNOhW424wkVZVGJ X-Received: by 10.80.213.14 with SMTP id u14mr4143471edi.87.1509626205666; Thu, 02 Nov 2017 05:36:45 -0700 (PDT) X-Received: by 10.80.213.14 with SMTP id u14mr4143437edi.87.1509626205301; Thu, 02 Nov 2017 05:36:45 -0700 (PDT) MIME-Version: 1.0 Received: by 10.80.182.181 with HTTP; Thu, 2 Nov 2017 05:36:44 -0700 (PDT) From: Shankara Pailoor Date: Thu, 2 Nov 2017 08:36:44 -0400 Message-ID: Subject: WARNING: at net/core/stream.c:204 To: David Miller , Linux Kernel Network Developers , LKML , acme@conectiva.com.br, alan@lxorguk.ukuu.org.uk Cc: Andrew Zhu Aday , syzkaller Content-Type: text/plain; charset="UTF-8" X-No-Spam-Score: Local X-Scanned-By: MIMEDefang 2.78 on 128.59.72.15 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, We encountered the following warning when fuzzing with Syzkaller on Linux 4.14-rc4. Syzkaller was able to isolate the sequence of calls which caused the bug but couldn't create a C program that could regularly trigger it. Here are the logs from the reproducer attempts: https://pastebin.com/QWQZK6hW Here is the original stack trace: https://pastebin.com/7L4WciRr Regards, Shankara From 1584610558635675419@xxx Mon Nov 20 18:26:31 +0000 2017 X-GM-THRID: 1584610558635675419 X-Gmail-Labels: Inbox,Category Forums,HistoricalUnread