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 C36DFE7D0A1 for ; Thu, 21 Sep 2023 17:24:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229877AbjIURYb (ORCPT ); Thu, 21 Sep 2023 13:24:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40478 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229835AbjIURYL (ORCPT ); Thu, 21 Sep 2023 13:24:11 -0400 Received: from out-210.mta1.migadu.com (out-210.mta1.migadu.com [95.215.58.210]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4F43424869 for ; Thu, 21 Sep 2023 10:11:31 -0700 (PDT) Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1695275225; h=from:from:reply-to:subject:subject: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=aN+EUH0vaJjZAAWY+RQaRw5xxfN01hvoxcEUTvT6ACw=; b=JxwbhX3i+3E+Yoc0pOM8/UsDWVsL2ZUD7tD7mdZaYMuxw4k2kS/Fi1VEWwLsaSWYwEFnlA QfBhsO+wQTb1ypSJH6uZhrnxYa1Oke1fdEFAEXX4spIsMyhK3zlReAWDvnQ6VLt67nq+zz mZWPPKgt10ZhLl8nrnaWfnoBJE8wrtk= Date: Thu, 21 Sep 2023 13:46:56 +0800 MIME-Version: 1.0 Subject: Re: [bug report] blktests srp/002 hang To: Bob Pearson , Bart Van Assche , 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> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zhu Yanjun In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org 在 2023/9/21 1:29, Bob Pearson 写道: > 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, Bob. From what you said, in Ubuntu, this problem does not occur now. To now, On Debian, without the commit 9b4b7c1f9f54 ("RDMA/rxe: Add workqueue support for rxe tasks"), this hang does not occur. On Fedora, similar to Debian. On Ubuntu, this problem does not occur now. But not sure if this commit exists or not. Hi, Bob, can you make tests without the above commit to verify if the same problem occurs or not on Ubuntu? Can any one who has test environments to verify if this problem still occurs on Ubuntu without this commit? Jason && Leon, please comment on this. Thanks a lot. Zhu Yanjun > >> Thanks, >> >> Bart. >