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=-5.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 BB5E8C47082 for ; Thu, 3 Jun 2021 16:52:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E90F613F4 for ; Thu, 3 Jun 2021 16:52:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229885AbhFCQyi (ORCPT ); Thu, 3 Jun 2021 12:54:38 -0400 Received: from mail-pj1-f49.google.com ([209.85.216.49]:33507 "EHLO mail-pj1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229826AbhFCQyi (ORCPT ); Thu, 3 Jun 2021 12:54:38 -0400 Received: by mail-pj1-f49.google.com with SMTP id k22-20020a17090aef16b0290163512accedso3695927pjz.0; Thu, 03 Jun 2021 09:52:53 -0700 (PDT) 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=A4PUrNAyORJrJtmrQDwf06S8baOEzVduzKP2wT3KDSU=; b=RtdCKAf7FrR+LdK5t99yhknuZvT2vKvoE2j6U5dVZymA9QyrLTkQ6nLhvWJDop7Ql/ P9P1IUG5BmzjMX2DEOfQWRsM5hkbOyJUKOpwJTsqOCIKbrcBLcZrSNgaVPAXB2ppPoX6 y8PdE4Danw46njO4VeUrwKMa+HYPzxF4dxQGJSVj3/HSd8NIIIFJ3g4/aIbO84vHR9Eo opHLspi4qErKr+QsilIV6h+vUXESEx55+17AZ+GpjmbcyE3A25LyxkfkJxYcxHqjkRgW nmMjZYnghtu3MvnnorNbsXOs+fJrYH50o1eZFqNtx+KQP4SkKq2ONCU5u8t5m4b2Xn3T s9dQ== X-Gm-Message-State: AOAM531w3Ju9PlUq4vpiDEXgEMO9UuMvActo9ArDWUlI3eSVmN0EJrDk 5dA4YaHBHgMsXepkA2OJzYvVyWuxtbM= X-Google-Smtp-Source: ABdhPJzWPJhxQy7iqzH9sbtkolZXhfMH4Ry88gBWFj3lcinDhqrOzw9Ol/DA6KAVd276NDUF52RmMA== X-Received: by 2002:a17:90a:af8b:: with SMTP id w11mr149454pjq.228.1622739172619; Thu, 03 Jun 2021 09:52:52 -0700 (PDT) Received: from [192.168.51.110] (c-73-241-217-19.hsd1.ca.comcast.net. [73.241.217.19]) by smtp.gmail.com with ESMTPSA id e6sm2925710pjl.3.2021.06.03.09.52.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Jun 2021 09:52:52 -0700 (PDT) Subject: Re: UFS failures with v5.13-rc4 To: Felipe Balbi , Alim Akhtar , Avri Altman , "James E.J. Bottomley" , "Martin K. Petersen" , linux-scsi@vger.kernel.org, linux-arm-msm@vger.kernel.org References: <87lf7rc9es.fsf@kernel.org> From: Bart Van Assche Message-ID: Date: Thu, 3 Jun 2021 09:52:50 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <87lf7rc9es.fsf@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org On 6/3/21 7:25 AM, Felipe Balbi wrote: > Today I managed to trigger some pretty bad faults with with v5.13-rc4 > running on SM8150 (Snapdragon) and iozone. > > It seems the problem only happens when using bfq iosched, as I couldn't > trigger it with mq-deadline. Both the UFS driver and the BFQ scheduler have been changed significantly recently. It would help if this issue could be bisected. That will reveal whether the root cause is in the UFS driver or in the BFQ scheduler. Thanks, Bart.