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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 9A21CC43381 for ; Wed, 20 Mar 2019 19:05:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EC1C2184D for ; Wed, 20 Mar 2019 19:05:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ISmOBG7u" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727177AbfCTTFw (ORCPT ); Wed, 20 Mar 2019 15:05:52 -0400 Received: from mail-io1-f46.google.com ([209.85.166.46]:39831 "EHLO mail-io1-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727099AbfCTTFw (ORCPT ); Wed, 20 Mar 2019 15:05:52 -0400 Received: by mail-io1-f46.google.com with SMTP id e13so3055698ioq.6 for ; Wed, 20 Mar 2019 12:05:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:subject:from:to:cc:date:in-reply-to:references :mime-version:content-transfer-encoding; bh=s3kY8srxmJS+TKqHmx8FizW3734l63ZrjDTzj1ruNlk=; b=ISmOBG7uFOVcfh9u8W2AI2JnBGYurV2aRXgOSDzM3Vq9lQE1jeDiW0zYjr0NcfLINy UaLaMo82kgowNfDGm3PrI4UjdbzY8AlXYrtu0y4PyivlaxBVlYiGVV6PvaP5Y9qMbCrB 9Uws7OPBtFgf9Q7DxRZnasO+me0CI1eAEQcQFouXL1cdoPxR0WBlQnsUu5xeJJ9h/xRf 2Xvt33m0K3rcdC3sArn8M8Ek3B7MYQCvo45ziilM19YOoma4WyUne/UjidDR22jh2kyW DYr5q5SVbnr9UBMEUD64Er0zS2ngb7qMhyTbZF8sKiaKViOsxvqvosqE4L2hzI528+I3 AZkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:mime-version:content-transfer-encoding; bh=s3kY8srxmJS+TKqHmx8FizW3734l63ZrjDTzj1ruNlk=; b=WEXselOpCmuJJ4VIt/y8FfpryNgMk6jRnEfGm/8IAxYMZ/97K48OwfQPGLtSD9RCdA g6Rw7vqxdXu80QZmct1+wI2zG92zGN2voUChsz7XLfdlUqh6BxOdw/nGEPybOSc6n1rn NIRxQBpS9TZLhJH8CgcFSCEVCY33LOUL8EXTkXWTnbGxMaD7KeDxotb9E2gka1+fbHG2 r1MDZfmx4p9fXwCiYPF2qq+aHV2QWD5Sz1Uku1V6+F1VhZbnxoPNu1uP4iF77hBA942V h7AP4nkA+T+Lsigtb86Zm/+tbnLayjxqQ7a5+9NhD7Y6rdLm1bdE09AobNfdZ+As/pyK nUhA== X-Gm-Message-State: APjAAAU+KQeyYfK9XTEWc4LZWudwNkBwFcxR93uLiNyqatcV1Us6Sk3P sY6LsGd1Plj3MomynLQKwLo= X-Google-Smtp-Source: APXvYqzMc0ydoqbmt8kYbglYZwbdhQ/XJakAgd5VuveM4RtE0VYlKERWoHUCsJmuKe7ktbBU45SNbQ== X-Received: by 2002:a5d:9a08:: with SMTP id s8mr5713591iol.99.1553108751550; Wed, 20 Mar 2019 12:05:51 -0700 (PDT) Received: from tzanussi-mobl ([2601:246:0:7004:8ddb:2c2a:9b01:337d]) by smtp.googlemail.com with ESMTPSA id z25sm1079312ioh.43.2019.03.20.12.05.50 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 20 Mar 2019 12:05:50 -0700 (PDT) Message-ID: <1553108749.2079.1.camel@gmail.com> Subject: Re: dell_smbios KASAN bug From: Tom Zanussi To: Steven Rostedt Cc: Pali =?ISO-8859-1?Q?Roh=E1r?= , Mario Limonciello , linux-kernel@vger.kernel.org Date: Wed, 20 Mar 2019 14:05:49 -0500 In-Reply-To: <20190320144146.08ecd5e4@gandalf.local.home> References: <1553106560.2080.5.camel@gmail.com> <20190320144146.08ecd5e4@gandalf.local.home> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.26.1-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2019-03-20 at 14:41 -0400, Steven Rostedt wrote: > On Wed, 20 Mar 2019 13:29:20 -0500 > Tom Zanussi wrote: > > > Hi, > > > > While looking into an unrelated problem, I hit this KASAN use- > > after- > > free warning, so thought I'd let you know. > > > > I have no idea how to fix it, but let me know if you need more > > info. > > > > Could you run with debug in the kernel command line, and see if you > hit > any failed messages from the dell_smbios_init() call? > Not much, but this looks relevant: [ 26.783749] dell_smbios: No SMBIOS backends available (wmi: -19, smm: -19) [ 26.963648] dell_smbios: No dell-smbios drivers are loaded Tom > > -- Steve