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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 30967CA9EB5 for ; Mon, 4 Nov 2019 13:25:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0469B21D7D for ; Mon, 4 Nov 2019 13:25:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="nq/YeMXL" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729045AbfKDNZN (ORCPT ); Mon, 4 Nov 2019 08:25:13 -0500 Received: from mail-qt1-f194.google.com ([209.85.160.194]:33292 "EHLO mail-qt1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727332AbfKDNZN (ORCPT ); Mon, 4 Nov 2019 08:25:13 -0500 Received: by mail-qt1-f194.google.com with SMTP id y39so23906317qty.0; Mon, 04 Nov 2019 05:25:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=DKdIIDMLF5QN6l/0M8nP34uwWbd87SXNqY0koiCvQwQ=; b=nq/YeMXLeglOeQcEZQFkaG+fSMvfxip3W9YvwMRMWj4zIgxjKGo6a3t5NZ5iYPfG6F h1V2nyKF3f8fZHZU8QICqnMecncDfNxQsGwCYFjHsfF714asOAHYlDiGiuMgwsN7RtDL EpsQifi/nryaSXVlvXoA7eZNDiTELpitMBcDimKTuVrxBg54r8dgQcDuu/fcr7kjfOiO cqTDFPTv+szVRT8RSCIAyrYW3GT0geuRSzq+TCQuxBNnpulgoDLssBvD7/kTbEcy9rdt IadRrExN+ey1/Q47MRPfO+KjjrGtl8KchREcAeDVz5/mTFbkCnA4UmZ9BSjBztvQkKAe dnCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=DKdIIDMLF5QN6l/0M8nP34uwWbd87SXNqY0koiCvQwQ=; b=HJnXZjTyj87ErG7fFe5aDooxchJkj1I84GO0iNJpK0bK/uPyJRTpeDuJaGr923d2Ts 9Ss0asqNlteGz2vDSmV4d2VnWypLPpiWuqjocL4Vv4TPu8EplIMTRKG1/hK5+cSNhhZ8 oD2rfTpnPjQQ8VST4XhZAR1r1G5Utcpgx5PY2I3ZriXU4i+g/5CIIfy5jc7cxyD4NZJE wZWG1IqqVuGr5O2nhNMoVpOqaEG3C5QV2Tm5/QcyLYAxNf5cOUODYXsmpRTCCaFRYObg f3j/Ed8axhNb0P2tgJTUmJuNi21LW+dIWgd0UWv+YRztPgZvXiGVkf4OWMC2cSx7psau NA1A== X-Gm-Message-State: APjAAAUUskIIG/sEFCxT6DboZhNOUgg4zjl+HSv00Wg86u4ZoNsnmIWJ 2gFfi61rlCuHywlzq/3+P9c= X-Google-Smtp-Source: APXvYqzmCpE1cXbKa+7oOSqluO7m5Rw1WPEyu+SjAQGUgdWquBeOGPMqq/aU3poYB+1xyXiqbzHL1g== X-Received: by 2002:ad4:5386:: with SMTP id i6mr15440858qvv.84.1572873912147; Mon, 04 Nov 2019 05:25:12 -0800 (PST) Received: from localhost.localdomain ([2001:1284:f013:146d:7dd5:a83f:defc:1791]) by smtp.gmail.com with ESMTPSA id h186sm2546430qkf.64.2019.11.04.05.25.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Nov 2019 05:25:11 -0800 (PST) Received: by localhost.localdomain (Postfix, from userid 1000) id DD7B9C16E7; Mon, 4 Nov 2019 10:25:08 -0300 (-03) Date: Mon, 4 Nov 2019 10:25:08 -0300 From: Marcelo Ricardo Leitner To: kernel test robot Cc: Wally Zhao , vyasevich@gmail.com, nhorman@tuxdriver.com, davem@davemloft.net, linux-sctp@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, wally.zhao@nokia-sbell.com, lkp@lists.01.org Subject: Re: [sctp] 327fecdaf3: BUG:kernel_NULL_pointer_dereference,address Message-ID: <20191104132508.GA53856@localhost.localdomain> References: <1572451637-14085-1-git-send-email-wallyzhao@gmail.com> <20191104084635.GM29418@shao2-debian> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191104084635.GM29418@shao2-debian> User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 04, 2019 at 04:46:35PM +0800, kernel test robot wrote: > [ 35.312661] BUG: kernel NULL pointer dereference, address: 00000000000005d8 > [ 35.316225] #PF: supervisor read access in kernel mode > [ 35.319178] #PF: error_code(0x0000) - not-present page > [ 35.322078] PGD 800000021b569067 P4D 800000021b569067 PUD 21b688067 PMD 0 > [ 35.325629] Oops: 0000 [#1] SMP PTI > [ 35.327965] CPU: 0 PID: 3148 Comm: trinity-c5 Not tainted 5.4.0-rc3-01107-g327fecdaf39ab #12 > [ 35.332863] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > [ 35.337932] RIP: 0010:sctp_packet_transmit+0x767/0x822 Right, as asoc can be NULL by then. (per the check on it a few lines before the change here). Marcelo