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=-3.6 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, URIBL_BLOCKED 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 77524C433E7 for ; Mon, 19 Oct 2020 09:23:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0A0C822243 for ; Mon, 19 Oct 2020 09:23:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="mlv/9Sgc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727429AbgJSJXI (ORCPT ); Mon, 19 Oct 2020 05:23:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50232 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727296AbgJSJXI (ORCPT ); Mon, 19 Oct 2020 05:23:08 -0400 Received: from mail-il1-x143.google.com (mail-il1-x143.google.com [IPv6:2607:f8b0:4864:20::143]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19497C0613CE for ; Mon, 19 Oct 2020 02:23:08 -0700 (PDT) Received: by mail-il1-x143.google.com with SMTP id k1so9693194ilc.10 for ; Mon, 19 Oct 2020 02:23:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=M7zMqBIzaYC8t0KoPaFRCpogFr9O8bSVaG7aPpieQD4=; b=mlv/9SgcqSzEsTUZx9aRiX8kkAQ5dvoCcGrbk6YP/JHefD8mEwqyBM1VYGzHZ9CQbt jtidmdeeBcV4VbN4G2xxlCnrDicwAvX8SJmS7PwSS3wuzRvKZiKLGuQicQGejlxlSnuB u5KPuO5rQuZIcabFcytDQRlyE0mj667ifS/5RYIIMUkhGPMiq1hqB5ORtJHWV44gCvRH 7X4dxW4mVf2gvtXb+A+JRZOdE/1Hb+vtzNgt2b0NFlWoWum3DMR7BUzB/DTF0Fsm3pcl i2WspKoi2wZyTZnUgzIHYAgSBfqZid55HaFPxHD5dRFaaAymjo2//WtkCE3QacYbPQ8i LCMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=M7zMqBIzaYC8t0KoPaFRCpogFr9O8bSVaG7aPpieQD4=; b=MzgSVaeEhmrWArzOxS5Jj2c9MOhvr7lwabqsGRwdi/aGGSHMjeXM+CmDFxkjXNOGKk DlhIRTegBnmT0W5tNaClsb9dc6WPtvAlPG8UNZHf4mwYzEmRroGWl4PATTkITxyOFAlE 9kRC34SJ5OmZsKHYLtj/Cve+2U83PfvZgkiibZ4gs7P03NBLRkKb1N83M6wRuxSJRZxU lqE2RogeDYxNhbLoxuVmuVfz4G2FZ0Www0vW53/O4tQLaibghrMbtmiVA6ChmRajlhX9 AHe+/g9BgXqfniIH7Iz5DkDExPYUf9fDnrWNSUEb3/WGXdiOPgWC4SAvKMSNa2eMiy2u 2d+Q== X-Gm-Message-State: AOAM533zfe8iBf7nmCZb22cDN5lBqnM51VL6cYW3IEpaf+QAaFUG9/FA UPYQKrAyECsGdOeAQjp+qIRzJ3fzzoTHy4l0+TA= X-Google-Smtp-Source: ABdhPJxGIkaEEmNkCDdDA+n1nnJLFEJi1EMI8Ug7uTfGxLgBJQBjMXMdt2JxEkCXXD/BwUsOZKovV+VDQHJ3I90X2e8= X-Received: by 2002:a92:c04c:: with SMTP id o12mr2851792ilf.22.1603099387435; Mon, 19 Oct 2020 02:23:07 -0700 (PDT) MIME-Version: 1.0 References: <20201001085900.ms5ix2zyoid7v3ra@steredhat> <20201002073457.jzkmefo5c65zlka7@steredhat> <05afcc49-5076-1368-3cc7-99abcf44847a@kernel.dk> In-Reply-To: From: Pankaj Gupta Date: Mon, 19 Oct 2020 11:22:56 +0200 Message-ID: Subject: Re: io_uring possibly the culprit for qemu hang (linux-5.4.y) To: Jack Wang Cc: Jens Axboe , Qemu Developers , io-uring@vger.kernel.org, Stefano Garzarella , Ju Hyung Park Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org @Jack Wang, Maybe four io_uring patches in 5.4.71 fixes the issue for you as well? Thanks, Pankaj > Hi Jens. > > On Sat, Oct 17, 2020 at 3:07 AM Jens Axboe wrote: > > > > Would be great if you could try 5.4.71 and see if that helps for your > > issue. > > > > Oh wow, yeah it did fix the issue. > > I'm able to reliably turn off and start the VM multiple times in a row. > Double checked by confirming QEMU is dynamically linked to liburing.so.1. > > Looks like those 4 io_uring fixes helped. > > Thanks! >