From patchwork Mon Dec 13 19:28:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Bogdanov X-Patchwork-Id: 595467 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 CB7B4C19F2C for ; Wed, 3 Aug 2022 16:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238450AbiHCQ3w (ORCPT ); Wed, 3 Aug 2022 12:29:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238317AbiHCQ3e (ORCPT ); Wed, 3 Aug 2022 12:29:34 -0400 Received: from mta-01.yadro.com (mta-02.yadro.com [89.207.88.252]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1F6B474E5; Wed, 3 Aug 2022 09:29:27 -0700 (PDT) Received: from localhost (unknown [127.0.0.1]) by mta-01.yadro.com (Postfix) with ESMTP id 9F10241305; Wed, 3 Aug 2022 16:29:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=yadro.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:x-mailer:message-id:date:date:subject :subject:from:from:received:received:received:received; s= mta-01; t=1659544165; x=1661358566; bh=UZx7O79uzg91XujHbNS/78m3g 0VCYVZ6MyHH03e8Ggc=; b=RkJQtEA9k6/TFzROpY52XRaSpaDuozV8YB5oN4/P9 jealZYIKEFe+SeWnNNedS6UD4Jr4Hxpi6dOXOKmhkGmHe29POvl8HAu0b4/E8pCJ 5KGFJiqZem/uCRObO3tev1tobwxk6JUMVidSQcv3kTwMVshxoWcTBzZFPqCjJjr2 Q0= X-Virus-Scanned: amavisd-new at yadro.com Received: from mta-01.yadro.com ([127.0.0.1]) by localhost (mta-01.yadro.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id KoC34oFUx45M; Wed, 3 Aug 2022 19:29:25 +0300 (MSK) Received: from T-EXCH-01.corp.yadro.com (t-exch-01.corp.yadro.com [172.17.10.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id CAF1B412C5; Wed, 3 Aug 2022 19:29:17 +0300 (MSK) Received: from T-EXCH-08.corp.yadro.com (172.17.11.58) by T-EXCH-01.corp.yadro.com (172.17.10.101) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Wed, 3 Aug 2022 19:29:17 +0300 Received: from NB-591.corp.yadro.com (10.199.18.20) by T-EXCH-08.corp.yadro.com (172.17.11.58) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.1118.9; Wed, 3 Aug 2022 19:29:17 +0300 From: Dmitry Bogdanov To: Martin Petersen , CC: , , Dmitry Bogdanov Subject: [RFC PATCH 21/48] target: core: checks against peer node SCSI2 reservation Date: Mon, 13 Dec 2021 22:28:57 +0300 Message-ID: <20220803162857.27770-22-d.bogdanov@yadro.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220803162857.27770-1-d.bogdanov@yadro.com> References: <20220803162857.27770-1-d.bogdanov@yadro.com> MIME-Version: 1.0 X-Originating-IP: [10.199.18.20] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-08.corp.yadro.com (172.17.11.58) Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org For the case of SCSI-2 reservation by peer node dev->reservation_holder session is NULL. So use this information as reservation existence. Signed-off-by: Dmitry Bogdanov --- drivers/target/target_core_pr.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 2f4c65d5d766..c4329f639323 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -95,7 +95,8 @@ target_scsi2_reservation_check(struct se_cmd *cmd) break; } - if (dev->reservation_holder->se_node_acl != sess->se_node_acl) + if (!dev->reservation_holder || + dev->reservation_holder->se_node_acl != sess->se_node_acl) return TCM_RESERVATION_CONFLICT; if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) { @@ -211,6 +212,9 @@ target_scsi2_reservation_release(struct se_cmd *cmd) if (!(dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)) goto out_unlock; + if (!dev->reservation_holder) + goto out_unlock; + if (dev->reservation_holder->se_node_acl != sess->se_node_acl) goto out_unlock; @@ -262,12 +266,15 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd) tpg = sess->se_tpg; spin_lock(&dev->dev_reservation_lock); if ((dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) && - dev->reservation_holder->se_node_acl != sess->se_node_acl) { + (!dev->reservation_holder || + dev->reservation_holder->se_node_acl != sess->se_node_acl)) { pr_err("SCSI-2 RESERVATION CONFLICT for %s fabric\n", tpg->se_tpg_tfo->fabric_name); pr_err("Original reserver LUN: %llu %s\n", cmd->se_lun->unpacked_lun, - dev->reservation_holder->se_node_acl->initiatorname); + (dev->reservation_holder) ? + dev->reservation_holder->se_node_acl->initiatorname : + "peer"); pr_err("Current attempt - LUN: %llu -> MAPPED LUN: %llu" " from %s \n", cmd->se_lun->unpacked_lun, cmd->orig_fe_lun,