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 CDD3AC433EF for ; Thu, 16 Dec 2021 10:08:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233509AbhLPKIW (ORCPT ); Thu, 16 Dec 2021 05:08:22 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:47600 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235641AbhLPKIV (ORCPT ); Thu, 16 Dec 2021 05:08:21 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1BG7xVB9018689; Thu, 16 Dec 2021 10:08:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : date : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : mime-version; s=pp1; bh=nfJZtwi9MqijqEWjGvp+8qARqPFaSWZXZtpZIlm8QfM=; b=ZW1EIL+kp1NwtkU9+r3n6zIkzW1TuHxsDBVitYoIMgBoRgBJf4JsNdbo83SDnog9TA2d ZsCyrMOUx2sOKY2pXe0BPek9swbYUk2+oKb6/flyU7RW+IbuGITOsU83uVjNcvVDIe8z 4+TsLh0PbXj5/YOx6FG2JqPL5KkcrBClDTvcjWYszMHyptWsXo/0MrMimQJTdAXLOD/+ DxDp4davPJwyZmg6sPxZNoEbehGdQGZU9yJTO6a7xK01mJle9LtQ/rgc1H3nebCnoZDR nTwNm/jgPw2AO2doxZcqepS3J7M/PkmjQ02zPwpqCX+PiofJ3/ShJquKN6Zf+zsy5QRK yg== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3cyn1jsdr0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Dec 2021 10:08:18 +0000 Received: from m0098409.ppops.net (m0098409.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 1BGA07iS006807; Thu, 16 Dec 2021 10:08:18 GMT Received: from ppma01fra.de.ibm.com (46.49.7a9f.ip4.static.sl-reverse.com [159.122.73.70]) by mx0a-001b2d01.pphosted.com with ESMTP id 3cyn1jsdq2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Dec 2021 10:08:18 +0000 Received: from pps.filterd (ppma01fra.de.ibm.com [127.0.0.1]) by ppma01fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1BGA2UpS024719; Thu, 16 Dec 2021 10:08:15 GMT Received: from b06cxnps4074.portsmouth.uk.ibm.com (d06relay11.portsmouth.uk.ibm.com [9.149.109.196]) by ppma01fra.de.ibm.com with ESMTP id 3cy7k3d270-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 16 Dec 2021 10:08:15 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1BGA8DxN24838602 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 16 Dec 2021 10:08:13 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 109B752052; Thu, 16 Dec 2021 10:08:13 +0000 (GMT) Received: from [9.145.39.85] (unknown [9.145.39.85]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id B1E575204F; Thu, 16 Dec 2021 10:08:12 +0000 (GMT) Message-ID: <2c8f208f-9b14-1c79-ae6a-0ef64010b70a@linux.ibm.com> Date: Thu, 16 Dec 2021 11:08:13 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.3.2 Subject: Re: [PATCH net] net/smc: Prevent smc_release() from long blocking Content-Language: en-US To: "D. Wythe" Cc: kuba@kernel.org, davem@davemloft.net, netdev@vger.kernel.org, linux-s390@vger.kernel.org, linux-rdma@vger.kernel.org References: <1639571361-101128-1-git-send-email-alibuda@linux.alibaba.com> From: Karsten Graul Organization: IBM Deutschland Research & Development GmbH In-Reply-To: <1639571361-101128-1-git-send-email-alibuda@linux.alibaba.com> Content-Type: text/plain; charset=UTF-8 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: CmpTY8c-RTKDSt3WNqEb04JO0Cwql8ds X-Proofpoint-GUID: fXg8nuH8yzuCs6zwYvSuYmj2RV2UOlqe Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-16_03,2021-12-16_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=892 lowpriorityscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 clxscore=1015 malwarescore=0 spamscore=0 mlxscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112160053 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On 15/12/2021 13:29, D. Wythe wrote: > From: "D. Wythe" > > In nginx/wrk benchmark, there's a hung problem with high probability > on case likes that: (client will last several minutes to exit) > > server: smc_run nginx > > client: smc_run wrk -c 10000 -t 1 http://server > > Client hangs with the following backtrace: Good finding, thank you! Acked-by: Karsten Graul