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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DF68C4167B for ; Wed, 29 Nov 2023 18:59:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232466AbjK2S7U (ORCPT ); Wed, 29 Nov 2023 13:59:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232543AbjK2S7R (ORCPT ); Wed, 29 Nov 2023 13:59:17 -0500 Received: from omta36.uswest2.a.cloudfilter.net (omta36.uswest2.a.cloudfilter.net [35.89.44.35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C7BD010C8 for ; Wed, 29 Nov 2023 10:59:23 -0800 (PST) Received: from eig-obgw-5008a.ext.cloudfilter.net ([10.0.29.246]) by cmsmtp with ESMTPS id 8DcCrNPoDhqFd8PmNrxyPl; Wed, 29 Nov 2023 18:59:23 +0000 Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with ESMTPS id 8PmLrXOnrkUbt8PmMrSybn; Wed, 29 Nov 2023 18:59:22 +0000 X-Authority-Analysis: v=2.4 cv=WpU4jPTv c=1 sm=1 tr=0 ts=65678a0a a=1YbLdUo/zbTtOZ3uB5T3HA==:117 a=7m0pAUNwt3ppyxJkgzeoew==:17 a=OWjo9vPv0XrRhIrVQ50Ab3nP57M=:19 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=IkcTkHD0fZMA:10 a=BNY50KLci1gA:10 a=wYkD_t78qR0A:10 a=-ubsauMo1vhQ0g-4glIA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=embeddedor.com; s=default; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=7OI9D0eyAxHKpZTaNiARRfZBik1LQdu0fxFr+ZBYUKY=; b=o7QqF0TbfUWmnTNpbRbOD0FKmE XxBedNgtDThkbqTmx9RPT3YGhbug1lHYZ6yjmflddwTUikk07lTPqND2yl2U+5pKs/XBgQHLjuP+f gJjYczf5mW3iMd8268mMcupsn7pjclY38K1KwOSmVifcdUS/GCQEJizf8rKsjI86fCLeG+H55E3UF Am9Fq2vkVWju31xE5gqh8qGzc/OBqiNOyqIBryKfHQh23pSW/J3VdY6ppTBAIgOEn3xhkjlqKV545 fMOY/7CScJLh4PUFQgP7kNVGChaVZ9ZYAhF8yZhY/3uz1BXvjzCRV6BiRqKfkfC7k19+PEcrfjPM6 TzJZBYsQ==; Received: from 187.184.156.122.cable.dyn.cableonline.com.mx ([187.184.156.122]:1245 helo=[192.168.0.28]) by gator4166.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.96.2) (envelope-from ) id 1r8PmL-001xh8-1J; Wed, 29 Nov 2023 12:59:21 -0600 Message-ID: Date: Wed, 29 Nov 2023 12:59:19 -0600 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: 6.5.13 regression: BUG: kernel NULL pointer dereference, address: 0000000000000020 Content-Language: en-US To: Dan Moulding , sam@gentoo.org Cc: linux-hardening@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, toralf.foerster@gmx.de References: <87jzq1lflc.fsf@gentoo.org> <20231128224816.6563-1-dan@danm.net> From: "Gustavo A. R. Silva" In-Reply-To: <20231128224816.6563-1-dan@danm.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 187.184.156.122 X-Source-L: No X-Exim-ID: 1r8PmL-001xh8-1J X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 187.184.156.122.cable.dyn.cableonline.com.mx ([192.168.0.28]) [187.184.156.122]:1245 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 3 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfBhOAIWsifAmwKHcY8H2zpue0smV0Rgajlobcuvs7D1uTUDJ36l9CxyvQwkTfKwtGpbpp6T9GwALCGa4rBmMPtOuM46fUv7ozhLCy+I16yyjDcgZI1hM 2B63QMUv8wiFRWTCCPj40d5NtukvMZrlCg3NLRxj+aLEfDi3enoJeGugCxIwWnx+RpupQC0gGXo9hlomcoaML+jPQ0X+AiVWB+7jtrhbp6BJ5KkJeWEjnUGl Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > the kernel source. But a quick (and possibly imperfect) grepping seems > to show that struct neighbor was the only one used with > __randomize_layout. So, I *think* it might be the only one that could > cause a problem with the recent change to the randomize_layout plugin. Yeah, I can confirm we don't currently have any other fake flex array in a struct with __randomize_layout. :) -- Gustavo