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=-2.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, 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 119E3C433E0 for ; Wed, 24 Jun 2020 19:46:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D87DF2077D for ; Wed, 24 Jun 2020 19:46:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="1ttHOWHt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391349AbgFXTqQ (ORCPT ); Wed, 24 Jun 2020 15:46:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391324AbgFXTqQ (ORCPT ); Wed, 24 Jun 2020 15:46:16 -0400 Received: from mail-pl1-x644.google.com (mail-pl1-x644.google.com [IPv6:2607:f8b0:4864:20::644]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 35EC6C061573 for ; Wed, 24 Jun 2020 12:46:16 -0700 (PDT) Received: by mail-pl1-x644.google.com with SMTP id d12so1510956ply.1 for ; Wed, 24 Jun 2020 12:46:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=etcC5SCWJE9q5GKdy+4hZU308fzw/ff8X68zPO6H23o=; b=1ttHOWHtWCaWFJVfcE2SivyYk2ulxNbtSjixxOQfHds2kZGP6Gc9XkIqkFyUu81A3l zVxwmONzVkY/1212l1Ohi1ILWSpgMjCfcSvQhbHxD4nZskRCMuc72cy4JeucvNJCgDX6 CenroNIIg0Q5c6VjeWCsiLarTiCDSXL4er3ejHU6M2DFrrFTrfJHNzO6GTZgZFtESrtB hD6VDL+P7kH7+lBwdCnvXqSCgpXQ1kmTRiBCReupOsYSyrJW8NY//clp62BhHDyH9/t3 hflvA9iK6GxL77waLEyDKc5iv8fXY4gEAKJOwOjHGT0bOfb8O1JXj/ls4Rp0xE4nv0rP Yz5g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=etcC5SCWJE9q5GKdy+4hZU308fzw/ff8X68zPO6H23o=; b=JnnIuDJIryLjKgTKkwscCdKaZuwM2Y74FRiuo4du83dd5JRidgsgF5jXvo9X6dT504 G41zY1rjOqwdhoPSJy/ffLMd8H6LhyjokLmBQnv0gdQL966nsuBQBspY0yISdMqMXyia 5M/iOblFKApLmW0dW0dNyCRmWQKKpIkg9sS+Oqi/vXXpo0/F7VhEd44pPKDD2UveV8II 6VH14sGdQuy50z9Gg7p1mW440lsFC8vYcxVP2oK00xqWiDjr/r2L+7Ik+dOZx+1vis8H AjpgBdtXW07ydc3qZ/efnPav2cytNKq9D6BpUw3+Bb88X5b7hcagQAq76zELdWsqlFvC c/KA== X-Gm-Message-State: AOAM533qbKFAh7Aujzc6kZlMWWu/kQyw6/7+CX+tSiVdibFVAoi/6jwc mTE2oGISEUUEr1eXzSYyB0hB2g== X-Google-Smtp-Source: ABdhPJyEiH6lN1BP8U0UF2zar+GhMc8QVt8uZMBCSOvg0OFQqtKiGklvgIkVtpT4o5C259KRtBu70w== X-Received: by 2002:a17:90a:de1:: with SMTP id 88mr31019016pjv.124.1593027974219; Wed, 24 Jun 2020 12:46:14 -0700 (PDT) Received: from [192.168.1.188] ([66.219.217.173]) by smtp.gmail.com with ESMTPSA id 27sm6036508pjg.19.2020.06.24.12.46.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 24 Jun 2020 12:46:13 -0700 (PDT) Subject: Re: [PATCH 0/3] iopoll fixes To: Pavel Begunkov , io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <32dc23ae-bc73-b4e2-f9aa-cab59280cae4@gmail.com> From: Jens Axboe Message-ID: <6d253bcb-8953-d975-1a39-78310ff2e723@kernel.dk> Date: Wed, 24 Jun 2020 13:46:12 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <32dc23ae-bc73-b4e2-f9aa-cab59280cae4@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: io-uring-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 6/24/20 11:03 AM, Pavel Begunkov wrote: > On 24/06/2020 19:50, Pavel Begunkov wrote: >> Did more comprehensive iopoll testing and found some more problems. >> >> [1] is from the previous series. Actually, v2 for this one, addressing >> the double-reissue bug found by Jens. It maybe not as efficient, but >> simple and easy to backport. >> >> [2,3] current->mm NULL deref > > And yet there are issues left... I'll resend Can you also please have them separated in terms of what's for 5.8 and what's for 5.9? -- Jens Axboe