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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 1ABE9C433B4 for ; Thu, 29 Apr 2021 14:32:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D5CC461409 for ; Thu, 29 Apr 2021 14:32:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240555AbhD2Od0 (ORCPT ); Thu, 29 Apr 2021 10:33:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237338AbhD2OdZ (ORCPT ); Thu, 29 Apr 2021 10:33:25 -0400 Received: from mail-oi1-x232.google.com (mail-oi1-x232.google.com [IPv6:2607:f8b0:4864:20::232]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66500C06138F for ; Thu, 29 Apr 2021 07:32:37 -0700 (PDT) Received: by mail-oi1-x232.google.com with SMTP id l17so35342844oil.11 for ; Thu, 29 Apr 2021 07:32:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:date:to:subject:message-id:mime-version:content-disposition; bh=bJ/PLktPKniZe2EeVuNM8Z4nyqPjwtXUomNw32X6DzA=; b=MiwWFw9I0kdxfMApSvZnPIS/sB0rKeUkVMIXQ15ImwmTX4Vn0eIp4edkPTJgRGsiFl 840MLJZJs1s4Vp4bXZiG5KBbwvBUbylhMMrUhca8oBUHxoXNYHuGWAq6cR622uXlYxhg 59UITNWNzpnMPBGZiDQW+vEiy1UzoR1Yl2g+v38gKKK0vRYQq/m8V/NYu4teRY/1ul4r lovkMQZkCp1F024sICsyt1OV1nGUccn7TQIfPxFiyYaGIDRTrC/hS9I1V53Wg8VsMhiq jS5l/dGK/tEk/IqLs+1CfWiPt7FuQ73ItKrKRfbruXzrXtD37dilJ312fgh/9aMbeRSy jKkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:date:to:subject:message-id:mime-version :content-disposition; bh=bJ/PLktPKniZe2EeVuNM8Z4nyqPjwtXUomNw32X6DzA=; b=YrSSQQkJUx/EpbF/Pdb9jUEL00ke9VoFw7TTWGYRIFd7z2nxe62fH/q+SDeRcAMqsa w0SFVKscVd7KsQyqxclJg6mQh0HMqCc5e2B3AhgQQzI9V1sRLzhpp8vE52fmtqTGi6S0 OaPLqT6Hxll7ruxGia6OQKouzqz+cZa/ZWzhrFiyY4A96Hi16bo2QHVcMwJqgMUElMzE /VKXmbbtMLYuoBt1sYMbpoCpgPzKr5iq/y2y4WB2fu9vGeotUVp78xbmlhULh4vRL3/q KzxTLSWWHUo9+ZGytwprjlOwBqRodXsH+sdohp1XreAtbeQVQNVk2DpAiQTOnyHuUrav vmSQ== X-Gm-Message-State: AOAM533Kxk45Cq+ZjLDxtMyasu9U6YED/V2uCrVKQo9pBmik6VKdRhzW 1dtxtg29bwcKgrERCcqHVr81to6CDBY= X-Google-Smtp-Source: ABdhPJwUGEp0H2FIp2Fpj4gZTYEm88QIfAyQsTvYeOpp3SSpHEPlOhTviBrF5Q31xWMg7RpWoCgOCQ== X-Received: by 2002:a05:6808:56f:: with SMTP id j15mr7051323oig.19.1619706756655; Thu, 29 Apr 2021 07:32:36 -0700 (PDT) Received: from localhost.localdomain ([2806:2f0:9001:d702:61ca:a6c9:43eb:e8b2]) by smtp.gmail.com with ESMTPSA id i9sm602525otr.19.2021.04.29.07.32.36 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Apr 2021 07:32:36 -0700 (PDT) From: Carlos X-Google-Original-From: Carlos Date: Thu, 29 Apr 2021 09:32:34 -0500 To: rust-for-linux@vger.kernel.org Subject: Loading an out-of-tree module Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: rust-for-linux@vger.kernel.org Good morning (or good afternoon) to all, I managed to build an out-of-tree HelloWorld module. However, when I tried loading it in the kernel (booted with eudyptula-boot) and dmesg inside the shell, I get a 'loading out-of-tree module taints kernel': struct HelloWorld; impl KernelModule for HelloWorld { fn init() -> KernelResult { pr_alert!("This is a rust kernel module"); Ok(HelloWorld {}) } } impl Drop for HelloWorld { fn drop(&mut self) { pr_alert!("Dropping rust kmod!"); } } [...] $ insmod hello_world.kmod $ dmesg | tail -1 [ 38.462244] hello_world: loading out-of-tree module taints kernel. $ rmmod hello_world [ 38.462402] hello_world: This is a rust kernel module $ insmod hello_world.ko [ 315.360871] hello_world: Dropping rust kmod! $ dmesg | tail -2 [ 38.462402] hello_world: This is a rust kernel module [ 315.360871] hello_world: Dropping rust kmod! And from then on all module messages are one off. Is the 'loading out-of-tree module taints kernel' messsage something you can disable at .config? Or is it something particular to eudyptula-boot? Thank you for your patience, Carlos