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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC418C54FB9 for ; Wed, 15 Nov 2023 20:00:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344096AbjKOUAV (ORCPT ); Wed, 15 Nov 2023 15:00:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344009AbjKOUAU (ORCPT ); Wed, 15 Nov 2023 15:00:20 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB4B812C for ; Wed, 15 Nov 2023 12:00:17 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E427C433C7; Wed, 15 Nov 2023 20:00:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700078417; bh=GAmQEaN9XaufFKP2eGwvs8bQiVV1VdAfQZpL7GVjYw8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=D6gljK6llOnxAOkOgNtSz63bh7VVRSCX+NUEivMo5HrOiPZWSvLH7Tnf56HJG06mf +LQiCyeDEkEY8f8r0c+fnNZN/iOnVfHVnSmYVUJo93AIwriacMFvfY8RAGAR4sS3nY wGmgLDDU8qDlslca/peK9gbrIRDxRGW6QiVWKhq8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Dominik Brodowski , Sasha Levin Subject: [PATCH 6.1 311/379] pcmcia: cs: fix possible hung task and memory leak pccardd() Date: Wed, 15 Nov 2023 14:26:26 -0500 Message-ID: <20231115192703.551041081@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115192645.143643130@linuxfoundation.org> References: <20231115192645.143643130@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yang Yingliang [ Upstream commit e3ea1b4847e49234e691c0d66bf030bd65bb7f2b ] If device_register() returns error in pccardd(), it leads two issues: 1. The socket_released has never been completed, it will block pcmcia_unregister_socket(), because of waiting for completion of socket_released. 2. The device name allocated by dev_set_name() is leaked. Fix this two issues by calling put_device() when device_register() fails. socket_released can be completed in pcmcia_release_socket(), the name can be freed in kobject_cleanup(). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Yang Yingliang Signed-off-by: Dominik Brodowski Signed-off-by: Sasha Levin --- drivers/pcmcia/cs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index f70197154a362..820cce7c8b400 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -605,6 +605,7 @@ static int pccardd(void *__skt) dev_warn(&skt->dev, "PCMCIA: unable to register socket\n"); skt->thread = NULL; complete(&skt->thread_done); + put_device(&skt->dev); return 0; } ret = pccard_sysfs_add_socket(&skt->dev); -- 2.42.0