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 952E9C07E99 for ; Mon, 12 Jul 2021 18:31:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 823F561164 for ; Mon, 12 Jul 2021 18:31:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235950AbhGLSeV (ORCPT ); Mon, 12 Jul 2021 14:34:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235891AbhGLSeT (ORCPT ); Mon, 12 Jul 2021 14:34:19 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3863FC0613E5 for ; Mon, 12 Jul 2021 11:31:30 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id k16so23824017ios.10 for ; Mon, 12 Jul 2021 11:31:30 -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=P0ksw+vlwVta+6sykFVSvdgotDV2Ib4mvz9CazIitN8WqC62CGc26VJjIWLL5HrDRx Gm+fTShmINE+dnzCsGfEbq0BvadYCsjJj2bXKlpPlNixXaqFAjfvns5UeV2gZtMn/qIH OVN4mgJycmzX0WSjzL+UgEmfz1pD+t6emBQ0M= 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=DkqNVVgLGzRRT4RUYUtxteTdMgCB6OwLJl0sNbwrLkt4M99DM+WNML33jKinanTrva bDuylm5AaopKh3E3UBIdv2aK7feFf0IQpDIQxWA3GE6OoQw3PiCUc/pqC5628lL2yah3 LycsnwLAJGMK1ZUwtbMDClatMpqB8Zj0OabAOHei12xo2kVtRDdjut1xJK48xAuuhkBk 78kSgo9sIwQ6qr1yxLfWp23/3Ny35IHY89C34GBxp7+mzxXzeIVxlZXXY5GIMiB5Y0vD RbflpEpzN+J9k+R+7ux8ZAwyM0ZPEjSiWPcp/7zAZ8RU4KLCkfEIAMTNjlvTf8Qh/QFv yTNg== X-Gm-Message-State: AOAM532bKanO+Y2H4bfSio1ARm65Ogz17cfUE/K8NwitQxrLxoSSowa8 Zo+QNNHBZIp/s8aKCIAYw1fQZw== X-Google-Smtp-Source: ABdhPJwgR47turz9PqCQknUdJuTqQOEvWs0Zy2zl48axnG9Z6QY5OInQZJ2yOMTpEOEcb2DMfyxqKA== X-Received: by 2002:a5e:9e4a:: with SMTP id j10mr215619ioq.29.1626114689487; Mon, 12 Jul 2021 11:31:29 -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 h12sm8674093ilj.6.2021.07.12.11.31.28 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 12 Jul 2021 11:31:28 -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: <38ca8e69-1385-6035-5ac4-2ef45cfc8141@linuxfoundation.org> Date: Mon, 12 Jul 2021 12:31:28 -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