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 6ACCBC47095 for ; Mon, 7 Jun 2021 16:20:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55F7E61447 for ; Mon, 7 Jun 2021 16:20:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232344AbhFGQWd (ORCPT ); Mon, 7 Jun 2021 12:22:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:48738 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232556AbhFGQTc (ORCPT ); Mon, 7 Jun 2021 12:19:32 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B69D061623; Mon, 7 Jun 2021 16:14:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623082478; bh=F1f9BPH9FyVoFFq5kkKgFr6EFrJQ0itBt5/Ly+P/4xk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P5VEI8XEdWHwvIgPJP08r5z1yPtB4glAIAhABUZ4vY1gmPkQIF3MWa/INOVxDxinN 6I09i2OLMJqMsvGuOBYLpbHwxhT0XlmC/FxbhglaJJvkVZR01h8PClTA+i27InHOq2 PpZQeYUVDRUADfW0QAmNCbRa7kIMyirtPcEnwYt5F7S4LsXbe6NzvtkVAvhnBQpktq dXjqcvTjTNKEYpcZqIRsreTwNDMs/qsPtgym3h4P+P09gyJnnhBztfsHjVwOP+y5Ch hex/J+DHmDw4AjhaXQduH3S1GBbEwSqAIQobL0/6aBt6QFbq4I7prS8itC8Jjh6g5L Iq3aehuAAalPA== 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 5.4 22/29] nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue() Date: Mon, 7 Jun 2021 12:14:03 -0400 Message-Id: <20210607161410.3584036-22-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210607161410.3584036-1-sashal@kernel.org> References: <20210607161410.3584036-1-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 f752e9432676..f657a12bf1fe 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -252,7 +252,8 @@ 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_cleanup_queue(ctrl->ctrl.fabrics_q); -- 2.30.2