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=-8.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 71FF9C07E99 for ; Mon, 12 Jul 2021 18:31:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A9F161166 for ; Mon, 12 Jul 2021 18:31:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235966AbhGLSeZ (ORCPT ); Mon, 12 Jul 2021 14:34:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56260 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235965AbhGLSeY (ORCPT ); Mon, 12 Jul 2021 14:34:24 -0400 Received: from mail-io1-xd2d.google.com (mail-io1-xd2d.google.com [IPv6:2607:f8b0:4864:20::d2d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7A67C0613E8 for ; Mon, 12 Jul 2021 11:31:35 -0700 (PDT) Received: by mail-io1-xd2d.google.com with SMTP id l18so18916242iow.4 for ; Mon, 12 Jul 2021 11:31:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=google; h=to:cc:from:subject:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=LgizhMtK9J0wIVIMFU3xipTGuHnEvtr8IUFF/Ttb7XQ=; b=fiWYk3Qgti2nJDBisADC1y5QatwEJAPoalQmvvprxStFE6LcBHAB9TfS1PEQcVjraL NHM8IKT8DyZxm8wQDGGmvbDP1ChwouB+WCPz0oxoPNsY5TKr9Ll5fUL570zFJqK5ILWA Z1wK+pWsYrF/4CsF/JB8IlTEBK6oq19g/q75M= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:to:cc:from:subject:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=LgizhMtK9J0wIVIMFU3xipTGuHnEvtr8IUFF/Ttb7XQ=; b=dHDg4KrP5jvJgunq3tjs2AYEUHcJwm1QZNPXdUqRnlmrxn0Js88OT3qcsmloiMouvQ Soyof6X37EV9EtdOqYEfKs3HZseDEHYkStwKhUzHTzfEdgsuXzHYvBADJ8rJy7h/ayS3 iyJ8pCXhONeCaVg1Jne47S2FoezYEoTv68vkp/j9P6c8dSBQtGxYsNSJjrWlq++3MYPR moH9tbSkESB0CjzPZRYf3A3amOJxHv1VE1WhjlT0BHSqcEd2zcrOTgku3rbBVhTFc8RO yKAlJ2biNqtHbUu31QCcN9p6+pPn8lUecjD2RxTtzYcAECtIku5R/KDWr/xZL+AFsc7p bXQw== X-Gm-Message-State: AOAM532fqPkEQG+LTna5hEI+56aUxb6XlMyIFFaaxPd3F3Mp+7JuME27 R7JIUtPeJW/+0XU4Cg/62rRV3A== X-Google-Smtp-Source: ABdhPJxULu9RcAOrhMI5KxkMU4BX+rJYn1a9lYVMLnheRhZkJQANESlazqXStOjdtDPZJVwrmUeDJA== X-Received: by 2002:a5d:8198:: with SMTP id u24mr212178ion.81.1626114695237; Mon, 12 Jul 2021 11:31:35 -0700 (PDT) Received: from [192.168.1.112] (c-24-9-64-241.hsd1.co.comcast.net. [24.9.64.241]) by smtp.gmail.com with ESMTPSA id c19sm8163490iod.46.2021.07.12.11.31.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Jul 2021 11:31:34 -0700 (PDT) To: Kees Cook Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan From: Shuah Khan Subject: BUG: lkdtm stack-entropy.sh test hangs Message-ID: <2836f48a-d4e2-7f00-f06c-9f556fbd6332@linuxfoundation.org> Date: Mon, 12 Jul 2021 12:31:34 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Kees, lkdtm stack-entropy.sh test hangs on Linux 5,14-rc1 - I tried root and non-root cases. Both hang. # selftests: lkdtm: stack-entropy.sh # ./stack-entropy.sh: 13: cannot create /sys/kernel/debug/provoke-crash/DIRECT: Permission denied If you have a fix for this, I would like to get this in soon. thanks, -- Shuah