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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY 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 49B1EC2BD09 for ; Tue, 10 Dec 2019 00:20:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 217E020836 for ; Tue, 10 Dec 2019 00:20:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="a7h1fBQE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727337AbfLJAU2 (ORCPT ); Mon, 9 Dec 2019 19:20:28 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:34532 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726495AbfLJAU2 (ORCPT ); Mon, 9 Dec 2019 19:20:28 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xBA0Jxh4042662; Tue, 10 Dec 2019 00:20:11 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=to : cc : subject : from : references : date : in-reply-to : message-id : mime-version : content-type; s=corp-2019-08-05; bh=OJnuPzQPoF0iS8DMzJ45Sw9F6y/joxKrLx/oNp/5Hpo=; b=a7h1fBQES5SQqfSEgNA6wAzwKiSS9yj0CM4m1+dGALBGv8k7ZwXPSPMGpd5xOANxGvZj otfkE86Z67BPWvE6anzefaaFaXcBDcfOQ1qgPJYHBNUIdRua4s+O7JpxCu7jco3uQ8lK CDU9O67paPPJeS+XhEO5VZ6Hd6bY8lYA7+yc0nF3tho+hp8sC+IyONKUUlLl4ydIGsFR c4XjEvWtTuRgYSatrfe7YxHQA4PaBNUormwIaLlyxq59TSIJ+WLL0eg90WyfRH2LrhIS z/5pP4itds+eIr3PLRxDuBhuNcEfSivr9kUtZoHjnDh8J5LRsZvZb20pzR1qiDcWZGGb FA== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by aserp2120.oracle.com with ESMTP id 2wr41q2xv8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Dec 2019 00:20:11 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.27/8.16.0.27) with SMTP id xBA0Icxu089858; Tue, 10 Dec 2019 00:20:11 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 2wsru8483x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Dec 2019 00:20:11 +0000 Received: from abhmp0009.oracle.com (abhmp0009.oracle.com [141.146.116.15]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id xBA0K9K0002069; Tue, 10 Dec 2019 00:20:09 GMT Received: from ca-mkp.ca.oracle.com (/10.159.214.123) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 09 Dec 2019 16:20:08 -0800 To: Bart Van Assche Cc: "Martin K . Petersen" , "James E . J . Bottomley" , linux-scsi@vger.kernel.org, Christoph Hellwig , Keith Busch , Lee Duncan , Chris Leech , stable@vger.kernel.org Subject: Re: [PATCH] iscsi: Fix a potential deadlock in the timeout handler From: "Martin K. Petersen" Organization: Oracle Corporation References: <20191209173457.187370-1-bvanassche@acm.org> Date: Mon, 09 Dec 2019 19:20:06 -0500 In-Reply-To: <20191209173457.187370-1-bvanassche@acm.org> (Bart Van Assche's message of "Mon, 9 Dec 2019 09:34:57 -0800") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.92 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9466 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=687 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-1912100001 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9466 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=752 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-1912100001 Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Bart, > Some time ago the block layer was modified such that timeout handlers > are called from thread context instead of interrupt context. Make it > safe to run the iSCSI timeout handler in thread context. This patch > fixes the following lockdep complaint: Applied to 5.5/scsi-fixes, thanks! -- Martin K. Petersen Oracle Linux Engineering