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=-7.2 required=3.0 tests=BAYES_00,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 7064FC2B9F4 for ; Tue, 22 Jun 2021 16:29:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 52782611BF for ; Tue, 22 Jun 2021 16:29:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229801AbhFVQcG (ORCPT ); Tue, 22 Jun 2021 12:32:06 -0400 Received: from smtp-out1.suse.de ([195.135.220.28]:59256 "EHLO smtp-out1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229501AbhFVQcG (ORCPT ); Tue, 22 Jun 2021 12:32:06 -0400 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 30F0E21971; Tue, 22 Jun 2021 16:29:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1624379389; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y+J3rTZ6rcEmt8AzcmguItPUWTQk4QSYQ2yokivFmpo=; b=GOdC2HL0i61aLB8nUybGcMsdxNB1CMPHbl5xh171bIXapgAJUmNUWWo8C/5czLVz/ALHDs xGAHT1YvIn1VRbvqQC42GMNCopvTEbQ5baaywwBvtB6zKSQ0BrGEc2+KnlF3kDS+KyxT8g TJu2js1ex4ggRV+5AvkzUGDl+V9guLc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1624379389; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Y+J3rTZ6rcEmt8AzcmguItPUWTQk4QSYQ2yokivFmpo=; b=q9e6GFAlMo5ut1LBLdSeahTtH/lpNPv1nb96/vtSerNTfTjnrr5eL84KAyrD9r79n143qA brfffbCIwP071HAQ== Received: from quack2.suse.cz (unknown [10.100.224.230]) by relay2.suse.de (Postfix) with ESMTP id 01BCFA3B8E; Tue, 22 Jun 2021 16:29:48 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id CCCCB1E1515; Tue, 22 Jun 2021 18:29:48 +0200 (CEST) Date: Tue, 22 Jun 2021 18:29:48 +0200 From: Jan Kara To: Oleksandr Natalenko Cc: Paolo Valente , Jens Axboe , linux-block , Linux Kernel Mailing List , Luca Mariotti , Holger =?iso-8859-1?Q?Hoffst=E4tte?= , Pietro Pedroni , Piotr Gorski , Khazhy Kumykov , Jan Kara Subject: Re: [PATCH FIXES/IMPROVEMENTS 0/7] block, bfq: preserve control, boost throughput, fix bugs Message-ID: <20210622162948.GJ14261@quack2.suse.cz> References: <20210619140948.98712-1-paolo.valente@linaro.org> <3533087.dJKXTdksHR@spock> <2CDC43F9-9CD9-4F7F-BD36-CCEB168B5245@linaro.org> <8003699.Qy64SzLKsf@spock> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8003699.Qy64SzLKsf@spock> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue 22-06-21 09:35:05, Oleksandr Natalenko wrote: > Hello. > > On úterý 22. června 2021 9:08:43 CEST Paolo Valente wrote: > > CCing also Jan and Khazhy, because in your commit log I see also the > > commit on bfq_requests_merged(). > > > > Is this OOPS reproducible for you? > > No, I haven't found a reproducer, at least yet. It took half a day of uptime > to hit this, so might not be that easy. Hum, if you can acquire a crash dump it would be the easiest I guess. We'd need to find out more about the request we crash on - whether it's otherwise valid, in what state it is etc... Honza -- Jan Kara SUSE Labs, CR