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 935B7C7EE23 for ; Wed, 1 Mar 2023 04:00:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229712AbjCAEAP (ORCPT ); Tue, 28 Feb 2023 23:00:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229592AbjCAEAO (ORCPT ); Tue, 28 Feb 2023 23:00:14 -0500 Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5E1AFE060; Tue, 28 Feb 2023 20:00:13 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.de; s=s31663417; t=1677643211; i=deller@gmx.de; bh=meuqcVimTIOxn+m7ODPWNf8ZSnlWVL0T//mg7FZcKV0=; h=X-UI-Sender-Class:Date:Subject:To:Cc:References:From:In-Reply-To; b=i/h2Oeh9RHzcgJbkedeRqlNuK14+s1GxkSqfowrTuWIVrPDz5bIyajpd+wKIcUW/a TgMggBoSd5j2Hv485NZGHIFYc7AL84R7lnnCk4AVMP1aTFTpkLYhLslAq4W8GSPIwu X0oRTfK0N0CW7KU/GgtDPFhY4Izm2Nqj0TlB8QdP7JT0RMxSQz9RT0Bl5BObeKDyrC IyGXFCrCw7xT7Zgo9o2B9YqpWmX/3sD3WKruBSWgm2fSP4PsvCzMGNSzeiuzAVmj20 qIAuZ1AyMcWR/8ZUsSdbqBazjdLLCtlnaE79MbgddvOhUWnAXnTa/XFI2vVQK+1WmU ZKK+FMPNDPOFQ== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [192.168.20.60] ([92.116.156.241]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MsHs0-1odSW928a2-00to3w; Wed, 01 Mar 2023 05:00:11 +0100 Message-ID: <11cfe564-a620-4d0b-210f-c0525c16a236@gmx.de> Date: Wed, 1 Mar 2023 05:00:11 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [PATCH 08/10] parisc: fix livelock in uaccess Content-Language: en-US To: Al Viro Cc: linux-arch@vger.kernel.org, linux-parisc@vger.kernel.org References: <84b1c2e4-c096-ed19-9701-472b54a4890c@gmx.de> <39436c4d-f5a2-edd5-24ba-19e4812ea364@gmx.de> <215b226f-7ffd-70d8-4e7b-85b37f288062@gmx.de> <2646c13f-33b8-1047-7cfe-bf7e394344b6@gmx.de> From: Helge Deller In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:ZaAmX5KNS7WeFFOlCpamknrtGgj7KHP2+2qtf1IUetMVq/ls45I hwpMHDOmw2C13DmuC7T769IeXqjywZ82F0HsNfcbB0XeE280ut8ZOvr0I38s3CJ4hJ+z22g Qye8i8FlIqg5FeQp9pNxOfCLBjvaR4nx0rTNztXN9by2lDa+l9c4JYypwqb25Pl36v/O4Jb u/CaVHnAGGA6IiGqxOPeg== UI-OutboundReport: notjunk:1;M01:P0:RXxhvFuXcFE=;OlmQ9BObwyXzn/bMi23tGTFfybU 5HhxWsHQMOmpIDuY7ZShfdZrPbaHZ3I6eaKIL7/my5wVD3LQiKVBp/oQI/GHGcv8VLjewwjpn QYTUl6QqiySuZMpzYytpTxr2gkK8H+lh7OaZnpsdZFK85Ke6qJWkSyK4wmN9L4tYjgKq0umCA QKmgbLJDRat+6+ZfgvGVeIY5mV6uWhrycVD3gaPM4YOwoZae7nEUPN4PyntE9k2gBmPdLfN3J ST/73Hv+E2ed62WBH6W4Knkw6lkeoU3aRS/v7cagOWiI6NX3u7+Ms+7bt76+nmjXsfOka+53g FnRu/1RSYsk59f/xA7X/ryCp+8dnUhElGIUjUHIDCi+FnriRQJD2j5/zBfniG+3hZM0ms4Fay Nj/jAw6bwTM5EsEL775Mf6AOmnQi/OTVH1/ib9s9Hk4TtE9EOMdDzBoWzBeBCymVUJdLV2wEP c9qcJcnk6L5+amL7e89l4eIHc/F/TysT8flKHUwOsjvsSO8AsTxk6jU1PsqsERq+8PbcN9Egn pAVPyp4/Ot6t3vlni2SI8aVgyNUEDvCpWuIp0Ql37ts9h9noY60oDPHXfl7z3mfTWw0EDqlYy GQ1j0EKCroqP2HTWIGmZWbwuorm0MKijYzZLC99SqnBEuhFRk/IE+SXzPv07a9vrhuH+2116k ZaqEEo0P69YaylLoPSY+ewsOnJf9zDMRtc+XKZFoQCjUrq+m5J2eQJs3Z/o272Wk4YIFHtpQF Z1rq3w1QOtYdfsnpFaOrFeOjPKTAOj+xLBPP2/l3L/l/i6BhilqFVSfHeK7eHjUL4BmQsUIde SpQlFPUYahZZNjgZcWhDw3JzJLrg2YKk2/Yxr/tDWO2iF9SNCr1p5dUoRuJl0ss6RPXHqBep1 ZRi7InvG+/fqzsozf0v8I1JfCAaNVxT3SqScjRjKx+oq8SsjUeO+toBOR1L7dRpyBwIdNLXSf 6IeRzvoEIyPMz2YPlufci1EhBDY= Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On 2/28/23 23:57, Al Viro wrote: > On Tue, Feb 28, 2023 at 09:22:31PM +0100, Helge Deller wrote: > >> Now I can confirm (with the adjusted reproducer), that your patch >> allows to kill the process with SIGKILL, while without your patch >> it's not possibe to kill the process at all. >> I've tested with a 32- and 64-bit parisc kernel. >> >> You may add >> Tested-by: Helge Deller # parisc >> to the patch. >> >> If you want me to take the patch (with the warning regarding missing ms= g variable fixed) >> through the parisc tree, please let me know. > > What message do you prefer there? It matters only for the case when > we are hitting an oops there, but... I have no preference on that message. Maybe "Page fault: fault signal on k= ernel memory" is too generic, so I'm fine with any better idea/wording you come up with. Helge