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=-19.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 386CDC47094 for ; Mon, 7 Jun 2021 16:22:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21DAC611BD for ; Mon, 7 Jun 2021 16:22:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233560AbhFGQYD (ORCPT ); Mon, 7 Jun 2021 12:24:03 -0400 Received: from mail.kernel.org ([198.145.29.99]:33404 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233039AbhFGQVd (ORCPT ); Mon, 7 Jun 2021 12:21:33 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0B1FD6186A; Mon, 7 Jun 2021 16:15:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623082509; bh=0kW4LCoGznNzXqduOXjRaq8hiTvCc8gYT1K4vZYcHSw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ohg9xqINQ+W8S5kxokGLbmwcw4wj50ChTfJcagLV+tzqgAtiVHEY/Es4dNfmb4TCx aE02ZPHnkmJZN7yaN9HGpHM2Flw3UI1nWWVCaeU6SijcONNHUIfxqrRH9XYmqMLBBf WPb1DmVFs9KJNtu08J5CyqYYu1x3psgTeVHnmNqIIFs9eukY0esoUSqgyzs5NeX5ND G+BM/UmyG7DVZQ9UseY+lFnA1DXgKSpLrTWsh5XHUJxGt5c+trDAoqsCkF2/Ik0L04 m1VZH3VIdRz+v0pvQW4WdnMrivW7wKKdLR0MLVQy5lrm0Z4tdWaChF39e73aDurTBp BFs5UuNwwhRvg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hannes Reinecke , Chaitanya Kulkarni , Christoph Hellwig , Sasha Levin , linux-nvme@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 16/21] nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue() Date: Mon, 7 Jun 2021 12:14:43 -0400 Message-Id: <20210607161448.3584332-16-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210607161448.3584332-1-sashal@kernel.org> References: <20210607161448.3584332-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hannes Reinecke [ Upstream commit 4237de2f73a669e4f89ac0aa2b44fb1a1d9ec583 ] We need to check the NVME_LOOP_Q_LIVE flag in nvme_loop_destroy_admin_queue() to protect against duplicate invocations eg during concurrent reset and remove calls. Signed-off-by: Hannes Reinecke Reviewed-by: Chaitanya Kulkarni Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- drivers/nvme/target/loop.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index dba0b0145f48..08b52f3ed0c3 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -274,7 +274,8 @@ static const struct blk_mq_ops nvme_loop_admin_mq_ops = { static void nvme_loop_destroy_admin_queue(struct nvme_loop_ctrl *ctrl) { - clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[0].flags); + if (!test_and_clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[0].flags)) + return; nvmet_sq_destroy(&ctrl->queues[0].nvme_sq); blk_cleanup_queue(ctrl->ctrl.admin_q); blk_mq_free_tag_set(&ctrl->admin_tag_set); -- 2.30.2