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,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 0BB57C49ED9 for ; Mon, 28 Jun 2021 15:19:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0579D6197F for ; Mon, 28 Jun 2021 15:19:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238521AbhF1PVk (ORCPT ); Mon, 28 Jun 2021 11:21:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:36548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235325AbhF1O6d (ORCPT ); Mon, 28 Jun 2021 10:58:33 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E028A61D54; Mon, 28 Jun 2021 14:40:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624891236; bh=BuOye9YrRd0Abg5wazBV93wK0pvQjc3DrbI37RjN448=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=V0v4SZxiQikI3stF24AARqP3NdOnbRbfgXUVwP4NgliDTMN3isHN/iUSCPe6u5wxB ZMjitOWoSqkC240K8/Rolbcy1+GopkvGFUxmz1Tn0DdMWPwOaUJaeTF+v9cnNMcV1U t27mI4hnXsllrDPVlaruLFw8cA59qDUKi9VqCk/e/+4mUnZMC9Ijy7T3suEo87EJHh 34iJy2zh48XexSp83nIQB5grbTY3YXDN1Lz+7Ivw/50HBh7nKjN8YdkmYPZbKvY/mL 7G/FWhzKzDnvnMgWn1hRxzpBC9lPVnZQJ0OHqSELlhwgZjFic6G+AiCNVJ0N8XEhTo 49b5B8eop3lig== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ming Lei , Bart Van Assche , Hannes Reinecke , John Garry , "Martin K . Petersen" , Sasha Levin Subject: [PATCH 4.9 36/71] scsi: core: Put .shost_dev in failure path if host state changes to RUNNING Date: Mon, 28 Jun 2021 10:39:28 -0400 Message-Id: <20210628144003.34260-37-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628144003.34260-1-sashal@kernel.org> References: <20210628144003.34260-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.274-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.9.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.9.274-rc1 X-KernelTest-Deadline: 2021-06-30T14:39+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ming Lei [ Upstream commit 11714026c02d613c30a149c3f4c4a15047744529 ] scsi_host_dev_release() only frees dev_name when host state is SHOST_CREATED. After host state has changed to SHOST_RUNNING, scsi_host_dev_release() no longer cleans up. Fix this by doing a put_device(&shost->shost_dev) in the failure path when host state is SHOST_RUNNING. Move get_device(&shost->shost_gendev) before device_add(&shost->shost_dev) so that scsi_host_cls_release() can do a put on this reference. Link: https://lore.kernel.org/r/20210602133029.2864069-4-ming.lei@redhat.com Cc: Bart Van Assche Cc: Hannes Reinecke Reported-by: John Garry Tested-by: John Garry Reviewed-by: John Garry Reviewed-by: Hannes Reinecke Signed-off-by: Ming Lei Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/hosts.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index dc09f10d5d4b..604cf3385aae 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -265,12 +265,11 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, device_enable_async_suspend(&shost->shost_dev); + get_device(&shost->shost_gendev); error = device_add(&shost->shost_dev); if (error) goto out_del_gendev; - get_device(&shost->shost_gendev); - if (shost->transportt->host_size) { shost->shost_data = kzalloc(shost->transportt->host_size, GFP_KERNEL); @@ -307,6 +306,11 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, out_del_dev: device_del(&shost->shost_dev); out_del_gendev: + /* + * Host state is SHOST_RUNNING so we have to explicitly release + * ->shost_dev. + */ + put_device(&shost->shost_dev); device_del(&shost->shost_gendev); out_destroy_freelist: device_disable_async_suspend(&shost->shost_gendev); -- 2.30.2