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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87CB6C04ABC for ; Wed, 20 Sep 2023 17:29:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229469AbjITR3o (ORCPT ); Wed, 20 Sep 2023 13:29:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53530 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229538AbjITR3n (ORCPT ); Wed, 20 Sep 2023 13:29:43 -0400 Received: from mail-oa1-x33.google.com (mail-oa1-x33.google.com [IPv6:2001:4860:4864:20::33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AC787CA; Wed, 20 Sep 2023 10:29:37 -0700 (PDT) Received: by mail-oa1-x33.google.com with SMTP id 586e51a60fabf-1bba7717d3bso35961fac.1; Wed, 20 Sep 2023 10:29:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1695230977; x=1695835777; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=cw0wwV+AWxUAaPBPNrxXNrrjadB4Sp+CqjdBtpMka38=; b=lQ0qqpt5Mm0ZYW1nPGjuT+d2tzy672JXn3yUeJUGDmVVg9IIk85FfN9Lrj/XIR5foS abu6jX06zHcpRELQHCX9P7IE25L9iq0+wA+R4hOfwvhAkT+QoPJAbR48FCellyrUKze8 IyUQ1GIjeZx/b9XT54gSQmOcKCidmlYqGb+WBOvRVwAdXmtp7cd3hw8M+37WF+JlnL/u 6Rho/JD/CMWxnMcrA8vKHs23mxl2lcAuPN1r4dcoV4sVdWXsF92UldmVLcnRqSIbQeOR Asl/soQ9zXlIfGV51YjZkDf+1JJxd0YTCM4ihL40gZXwLm5WdryciKfPpBpslRVcwr4c iJTA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695230977; x=1695835777; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=cw0wwV+AWxUAaPBPNrxXNrrjadB4Sp+CqjdBtpMka38=; b=IrdGWHOPyDbFBAiuSyEUKscOiIyK2ZD50cf+fEd3d1E10YCwqcOj7jBHWt2bjKoQSN ehA3Gx7RcclW7jCRNwv6rh/HkMG2rO4AnjLq6C6DB48Ln/P9liq4CWz+brPPNK4jKZqu 5HeS8PkzYPb97peGT10xZycfIzZHHTa4m5p32RJnue8dKluncFcD2WfgpSZ38HOi0Ibl egxYXJHcWpnN4jona7odibClv11sFpxSB1V0UE+XyDJIbrLstz/a6UifEMa7JjG4D0YZ RXZr0Oeazthh7LJXUqrYibckuk+1lILMP3g/FLzk84/TLNeZoVLb0eE0wpyqs3JUdSRB kvVw== X-Gm-Message-State: AOJu0Yw8fvM28/w89xylhfg8qArs9W/QGnVDDf4AAEOAMKWni5hHWAV3 sw+SL7/v8KSFoNw/lBiTmZdnhZBIcZ8= X-Google-Smtp-Source: AGHT+IFITLjcwqYSu9G9nUVkg60eHr1uVAChDjtJXP76bklwSYNIrxw/PlzOryLNKzrrRpg96rOAPQ== X-Received: by 2002:a05:6870:14d5:b0:1d1:425b:802d with SMTP id l21-20020a05687014d500b001d1425b802dmr3807680oab.7.1695230976776; Wed, 20 Sep 2023 10:29:36 -0700 (PDT) Received: from ?IPV6:2603:8081:1405:679b:dc02:5dd1:9c21:a1b6? (2603-8081-1405-679b-dc02-5dd1-9c21-a1b6.res6.spectrum.com. [2603:8081:1405:679b:dc02:5dd1:9c21:a1b6]) by smtp.gmail.com with ESMTPSA id eg50-20020a05687098b200b001db36673d92sm2743912oab.41.2023.09.20.10.29.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 Sep 2023 10:29:36 -0700 (PDT) Message-ID: Date: Wed, 20 Sep 2023 12:29:35 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.15.1 Subject: Re: [bug report] blktests srp/002 hang Content-Language: en-US To: Bart Van Assche , Zhu Yanjun , Shinichiro Kawasaki Cc: "linux-rdma@vger.kernel.org" , "linux-scsi@vger.kernel.org" References: <0c5c732c-283c-b29a-0ac2-c32211fc7e17@gmail.com> <8be8f611-e413-9584-7c2e-2c1abf4147be@acm.org> <18a3ae8c-145b-4c7f-a8f5-67840feeb98c@acm.org> <9dd0aa0a-d696-a95b-095b-f54d6d31a6ab@linux.dev> <5a4efe6f-d8c6-84ce-377e-eb64bcad706c@linux.dev> <6fc3b524-af7d-43ce-aa05-5c44ec850b9b@acm.org> <02d7cbf2-b17b-488a-b6e9-ebb728b51c94@acm.org> From: Bob Pearson In-Reply-To: <02d7cbf2-b17b-488a-b6e9-ebb728b51c94@acm.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On 9/20/23 12:22, Bart Van Assche wrote: > On 9/20/23 10:18, Bob Pearson wrote: >> But I have also seen the same behavior in the siw driver which is >> completely independent. > > Hmm ... I haven't seen any hangs yet with the siw driver. I was on Ubuntu 6-9 months ago. Currently I don't see hangs on either. > >> As mentioned above at the moment Ubuntu is failing rarely. But it used to fail reliably (srp/002 about 75% of the time and srp/011 about 99% of the time.) There haven't been any changes to rxe to explain this. > > I think that Zhu mentioned commit 9b4b7c1f9f54 ("RDMA/rxe: Add workqueue > support for rxe tasks")? That change happened well before the failures went away. I was seeing failures at the same rate with tasklets and wqs. But after updating Ubuntu and the kernel at some point they all went away. > > Thanks, > > Bart.