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=-7.5 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 45F5CC432BE for ; Wed, 25 Aug 2021 21:44:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A9BA60BD3 for ; Wed, 25 Aug 2021 21:44:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233928AbhHYVpK (ORCPT ); Wed, 25 Aug 2021 17:45:10 -0400 Received: from mail-pj1-f49.google.com ([209.85.216.49]:51915 "EHLO mail-pj1-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233405AbhHYVpI (ORCPT ); Wed, 25 Aug 2021 17:45:08 -0400 Received: by mail-pj1-f49.google.com with SMTP id oa17so693707pjb.1; Wed, 25 Aug 2021 14:44:22 -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:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=/iCaQmw0mVspWtMkXRo5AjWEYDfVjC1L0GlLteTtCrA=; b=XgnordZdOZAm7wHkfEd0eoFJ2SJBdF1ncZRAiyx8p8PH01+hFrvNyum205pownfflL LmebXHa3R8/NdpvJR7eHuyK/TsYZbZfhzrbQu3NrYnNc1B3SNxE3dW7gzaWRTqxnTSs2 hMChFr/+Rd8g50Waxb0jFcbBY8IZ8NpQJsNHUm3dRGmWS2r9UkgVkyrohAkrJviMJG/H SlC1PPtrtabKMnTXlosaw/YnkaeAiqApxbGsWD1a2Ax0AlO4rxCF4bweUuWoZVLjKoUI VVGAzc8G1F3EJRmqP0nIAAq+a747LfsuS12uVA0WhVUgxwcgSxPW2oSHU2rgJH6hyUMj IuaQ== X-Gm-Message-State: AOAM531WvWJmVmTj/EfW47P2BzFD7klRzFRn8oIVEk9YRj/ToraVYvTM /5e/E31a48EOlspdE6K0tei2xYOI+yo= X-Google-Smtp-Source: ABdhPJxna7cCboYCHeHgJXNZZ7lzBlir1EuTeA6z3bdLmLS/CO2RrtSUi+QvCuRl8i5FQaJzr9PVPA== X-Received: by 2002:a17:902:6b47:b0:12f:6c5f:ab4f with SMTP id g7-20020a1709026b4700b0012f6c5fab4fmr555076plt.17.1629927861515; Wed, 25 Aug 2021 14:44:21 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:5f7b:5bac:8246:4328]) by smtp.gmail.com with ESMTPSA id on15sm5960054pjb.19.2021.08.25.14.44.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Aug 2021 14:44:20 -0700 (PDT) Subject: Re: v5.14 RXE driver broken? To: Bob Pearson , Jason Gunthorpe Cc: Zhu Yanjun , "linux-rdma@vger.kernel.org" , "linux-block@vger.kernel.org" References: <20210825163219.GY543798@ziepe.ca> <423ed740-96e7-aebb-3e6f-7416108f5a62@acm.org> From: Bart Van Assche Message-ID: Date: Wed, 25 Aug 2021 14:44:19 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: 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-rdma@vger.kernel.org On 8/25/21 2:09 PM, Bob Pearson wrote: > Are you seeing the ib_alloc_mr() failure in 5.14? I thought that was just a > 5.13 thing. I am still not seeing that error in my test setup. I am getting > a soft lockup error after ~20 seconds. During most of that there is a> constant exchange of req/ack packets with nothing else happening. > > If you want I can send you a patch to print out error messages from MR > allocation. Hi Bob, I see the ib_alloc_mr() failures with kernel v5.14 in two different VMs. A different Linux distro has been installed in each VM. If it would help your debugging efforts, please send me the patch that prints out the MR allocation error messages. Bart.