From patchwork Wed Dec 19 15:18:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 10737509 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 982796C2 for ; Wed, 19 Dec 2018 15:45:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 849BE2B429 for ; Wed, 19 Dec 2018 15:45:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 75D192B432; Wed, 19 Dec 2018 15:45:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 10F232B429 for ; Wed, 19 Dec 2018 15:45:03 +0000 (UTC) Received: from localhost ([::1]:60872 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZe1u-0002pY-4e for patchwork-qemu-devel@patchwork.kernel.org; Wed, 19 Dec 2018 10:45:02 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55688) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZddc-00061n-HO for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gZdda-0004Aa-80 for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:56 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48764) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gZddZ-00049y-UX for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:54 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DFFA22D800 for ; Wed, 19 Dec 2018 15:19:52 +0000 (UTC) Received: from donizetti.redhat.com (ovpn-112-76.ams2.redhat.com [10.36.112.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id EAB4418215; Wed, 19 Dec 2018 15:19:51 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Wed, 19 Dec 2018 16:18:57 +0100 Message-Id: <20181219151917.3874-16-pbonzini@redhat.com> In-Reply-To: <20181219151917.3874-1-pbonzini@redhat.com> References: <20181219151917.3874-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Wed, 19 Dec 2018 15:19:52 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 15/35] block/iscsi: cancel libiscsi task when ABORT TASK TMF completes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stefan Hajnoczi Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Stefan Hajnoczi The libiscsi iscsi_task_mgmt_async() API documentation says: abort_task will also cancel the scsi task. The callback for the scsi task will be invoked with SCSI_STATUS_CANCELLED The libiscsi implementation does not fulfil this promise. The task's callback is not invoked and its struct iscsi_pdu remains in the internal list (effectively leaked). This patch invokes the libiscsi iscsi_scsi_cancel_task() API to force the task's callback to be invoked with SCSI_STATUS_CANCELLED when the ABORT TASK TMF completes and the task's callback hasn't been invoked yet. Signed-off-by: Stefan Hajnoczi Message-Id: <20180215111526.2464-1-stefanha@redhat.com> Signed-off-by: Paolo Bonzini --- block/iscsi.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/block/iscsi.c b/block/iscsi.c index abb872d3d9..a7e8c1ffaf 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -295,8 +295,12 @@ iscsi_abort_task_cb(struct iscsi_context *iscsi, int status, void *command_data, { IscsiAIOCB *acb = private_data; - acb->status = -ECANCELED; - iscsi_schedule_bh(acb); + /* If the command callback hasn't been called yet, drop the task */ + if (!acb->bh) { + /* Call iscsi_aio_ioctl_cb() with SCSI_STATUS_CANCELLED */ + iscsi_scsi_cancel_task(iscsi, acb->task); + } + qemu_aio_unref(acb); /* acquired in iscsi_aio_cancel() */ } @@ -947,6 +951,14 @@ iscsi_aio_ioctl_cb(struct iscsi_context *iscsi, int status, { IscsiAIOCB *acb = opaque; + if (status == SCSI_STATUS_CANCELLED) { + if (!acb->bh) { + acb->status = -ECANCELED; + iscsi_schedule_bh(acb); + } + return; + } + acb->status = 0; if (status < 0) { error_report("Failed to ioctl(SG_IO) to iSCSI lun. %s",