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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C2B0C433F5 for ; Fri, 5 Nov 2021 23:41:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 623ED6120A for ; Fri, 5 Nov 2021 23:41:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232468AbhKEXoh (ORCPT ); Fri, 5 Nov 2021 19:44:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbhKEXoh (ORCPT ); Fri, 5 Nov 2021 19:44:37 -0400 Received: from mail-il1-x135.google.com (mail-il1-x135.google.com [IPv6:2607:f8b0:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9AC6C061570 for ; Fri, 5 Nov 2021 16:41:56 -0700 (PDT) Received: by mail-il1-x135.google.com with SMTP id i12so11028156ila.12 for ; Fri, 05 Nov 2021 16:41:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=UzS3QOFEJxmVEtz5Kez5BnsRNW8Bt6XtmTpky/YNk1s=; b=KubIviG+C7WovXI8QIbc4Z302dscnfHCIZXoZowum0xuFCcEf7smG/kfbiRf5cLsh5 cOuwwSozMSqXsINcbN8TfElHJwkOI4+vQr5YnyWO3CuxWsR3EH+gjiqAVO7vJPNJ+1zL uPjfZkmUeSbt3/ZV04yWzNOiz0S9vn/VOvmMhUObTXFyBrjZVKf+JFxDa3KOCNWAYxWy +nOtzo5mqe4xeBWLSwHl/1fajQ43Cc/RlAfzwvPv5RmtaeVjmL3fimlUJjXTCpCmGger YLnIrohcLtJ+DtEJ94vegYyh4mVsDBpTRgSLUg3ZQALrBmmHoPb2WtwjVuuJvk8VETM/ 09rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=UzS3QOFEJxmVEtz5Kez5BnsRNW8Bt6XtmTpky/YNk1s=; b=z3DgA9XhRzAFd8b3YK/nHuV6YC6GMcfA3O+mdsqF1aLPHUZV6bVZut50gmSgR0eNCU SYQWfP0+DDKUx/JnEOK2E+OfHEGH2qb1dI5uKTSFQ4AB0g7sLL29LN1Qxp/dpCA//5Xr qbcLvXY3/1y+3Lk6vcrZOo8AqssqCL3tTV95cQrEmUsi3aNiSJafsJxAJpM6eVB0DF8L pwdk0OPzUzs3IgNWH//N6nt1E2N9kgefi9wz9noupZy9LcIzZQRAr87xoqMQP3MgjlTe PCgtttxShArytHwhycZIqXR95qUgssf6fauPW1MzATZ40eIdkSZ1zCFI7QFu0z1+fP63 iCkA== X-Gm-Message-State: AOAM533bcu/OaDod8JbrbNKrJOTuQmGhVXubcjH5diSWFPnS4n0X0A1M J3TsPIWirl6ZVVuz+WT1JggFmA== X-Google-Smtp-Source: ABdhPJzGXj9Ldz80yvZvMnobZ5dn87XuvZl0SEQOnThqz0h3QDNsJ0ZfKuzuSoCcjyCLXe7s+8SGPw== X-Received: by 2002:a92:c56b:: with SMTP id b11mr31574326ilj.243.1636155716233; Fri, 05 Nov 2021 16:41:56 -0700 (PDT) Received: from [192.168.1.116] ([66.219.217.159]) by smtp.gmail.com with ESMTPSA id g10sm6278319ila.34.2021.11.05.16.41.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Nov 2021 16:41:55 -0700 (PDT) Subject: Re: [PATCH v2 liburing] test: Add kworker-hang test To: Ammar Faizi Cc: Pavel Begunkov , io-uring Mailing List , Bedirhan KURT References: From: Jens Axboe Message-ID: <687bd0c5-be36-6892-c1e5-4488548aab12@kernel.dk> Date: Fri, 5 Nov 2021 17:41:55 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 11/5/21 5:35 PM, Ammar Faizi wrote: > On Wed, Oct 20, 2021 at 7:52 PM Ammar Faizi > wrote: >> >> Add kworker-hang test to reproduce this: >> >> [28335.037622] INFO: task kworker/u8:3:77596 blocked for more than 10 seconds. >> [28335.037629] Tainted: G W OE 5.15.0-rc4-for-5.16-io-uring-00060-g4922ab639eb6 #4 >> [28335.037637] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. >> [28335.037642] task:kworker/u8:3 state:D stack: 0 pid:77596 ppid: 2 flags:0x00004000 >> [28335.037650] Workqueue: events_unbound io_ring_exit_work > > Hi Jens, will you take this patch? If yes, I will spin the v3 because > this one no longer applies since the test/Makefile changed. Yes I will, sorry it dropped off my radar. Please just respin it. > This kworker hang bug still lives in Linux 5.15 stable anyway. We just need to backport the fix, then it should be fixed there too :-) -- Jens Axboe