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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 A4E53C46461 for ; Mon, 10 May 2021 12:37:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 730E661465 for ; Mon, 10 May 2021 12:37:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347381AbhEJMd6 (ORCPT ); Mon, 10 May 2021 08:33:58 -0400 Received: from mail.kernel.org ([198.145.29.99]:49920 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232323AbhEJLL6 (ORCPT ); Mon, 10 May 2021 07:11:58 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id D56106193B; Mon, 10 May 2021 11:09:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620644985; bh=j5XTR1qhDcUTBJswHxZ+UguBx7tHL2/2rtgwId+4R3E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cuzGivIuFmtS/YCHQY0w71xrEfO0JIEoM8BiTP+5ddHYVxPi/INGNeuYVRKxcTnhS bK64BnRhvVHfmd8ZV/O7w253NLDqDNQzNUi0kH3jiaC8Cf6SUu1Jtjdrz+ywd1TGZz hSyYaeu+EWROMFRqNOPVLI4QkFvRzEb0QZbiaVqc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hou Pu , Chaitanya Kulkarni , Christoph Hellwig , Sasha Levin Subject: [PATCH 5.12 269/384] nvmet: avoid queuing keep-alive timer if it is disabled Date: Mon, 10 May 2021 12:20:58 +0200 Message-Id: <20210510102023.712953366@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210510102014.849075526@linuxfoundation.org> References: <20210510102014.849075526@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hou Pu [ Upstream commit 8f864c595bed20ef85fef3e7314212b73800d51d ] Issue following command: nvme set-feature -f 0xf -v 0 /dev/nvme1n1 # disable keep-alive timer nvme admin-passthru -o 0x18 /dev/nvme1n1 # send keep-alive command will make keep-alive timer fired and thus delete the controller like below: [247459.907635] nvmet: ctrl 1 keep-alive timer (0 seconds) expired! [247459.930294] nvmet: ctrl 1 fatal error occurred! Avoid this by not queuing delayed keep-alive if it is disabled when keep-alive command is received from the admin queue. Signed-off-by: Hou Pu Tested-by: Chaitanya Kulkarni Signed-off-by: Christoph Hellwig Signed-off-by: Sasha Levin --- drivers/nvme/target/admin-cmd.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index fe6b8aa90b53..81224447605b 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -919,15 +919,21 @@ void nvmet_execute_async_event(struct nvmet_req *req) void nvmet_execute_keep_alive(struct nvmet_req *req) { struct nvmet_ctrl *ctrl = req->sq->ctrl; + u16 status = 0; if (!nvmet_check_transfer_len(req, 0)) return; + if (!ctrl->kato) { + status = NVME_SC_KA_TIMEOUT_INVALID; + goto out; + } + pr_debug("ctrl %d update keep-alive timer for %d secs\n", ctrl->cntlid, ctrl->kato); - mod_delayed_work(system_wq, &ctrl->ka_work, ctrl->kato * HZ); - nvmet_req_complete(req, 0); +out: + nvmet_req_complete(req, status); } u16 nvmet_parse_admin_cmd(struct nvmet_req *req) -- 2.30.2